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List of Papers
Takashi Sasaoka Last modified date：2024.04.15

Associate Professor / Mining System Engineering / Department of Earth Resources Engineering / Faculty of Engineering


Papers
1. Ian Tsuma KROP, Yoshiaki TAKAHASHI, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Joan Atieno ONYANGO , Assessment of Selected Machine Learning Models for Intelligent Classification of Flyrock Hazard in an Open Pit Mine , IEEE Access, https://doi.10.1109/ACCESS.2024.3352733 , 24p, 2024.01.
2. Bosong YU, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Fumihiko MATSUMOTO, Tomo MORITA , Prediction of Box-Jacking Force Using a Probabilistic Observational Approach , International Journal of the JSRM, 20, 12p, 2024.01.
3. Yuka OTA, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA, Yoshiaki TAKAHASHI , Preliminary Study on Application of Fractal Dimension to Evaluation of Fracture Condition in Rock Mass for Bench Blasting , Proc. of the 11th International Conference on Explosives and Blasting Techniques, 66-74, 2023.12.
4. Yoshiaki TAKAHASHI, Masato TAKEUCHI, Takashi SASAOKA, Shiro KUBOTA, Tei SABURI, Akihiro HAMANAKA, Hideki SHIMADA , Research on Influence of Rebar on Stress Wave Propagation of Reinforced-Concrete by Experimental and Numerical Method , Proc. of the 11th International Conference on Explosives and Blasting Techniques, 1-9, 2023.12.
5. Yifei ZHAO, Jianhong CHEN, Shan YANG, Kang HE, Hideki SHIMADA, Takashi SASAOKA , A Multi-Point Geostatistical Modeling Method Besed on 2D Training Image Partition Simulation , Mathematics , https://doi.org/10.3390/math11244900 , 11, 17p, 2023.12.
6. Rika IRIGUCHI, Yuma ISHII, Akihiro HAMANAKA, Faqiang SU, Kenichi ITAKURA, Junichi KODAMA, Takashi SASAOKA, Hideki SHIMADA, Gota DEGUCHI , Visualization of Movement and Expansion of Coal Reaction Zone by Acoustic Emission Monitoring in Underground Coal Gasification , Engineering 2023, https://doi.org.10.3390/eng4040166 , 4, 2960-2977, 2023.12.
7. Tianqi JIANG, Bing CHEN, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA , Thernal Stimulation Mechanical Response and Shear Dilatation Predictive Model Improvement of Granite Fractures in an Enhanced Geothermal System , Proc. of International Symposium on Earth Science and Technology 2023, 536-541, 2023.12.
8. Tieng RATHNAK, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA , Study on the Optimization of Waste Dump Design for Open Pit Mine -A Case Study of Okvau Gold Mine in Cambodia- , Proc. of International Symposium on Earth Science and Technology 2023, 472-477, 2023.12.
9. Atsushi KUBO, Akihiro HAMANAKA, Hideki SHIMADA, Takashi SASAOKA, Yuki MIZUNOE, Norimitsu HAMAOKA , Study on Growth of Artemisia Princeps under Pyrite-bearing Soil Conditions at a Mine-out Site , Proc. of International Symposium on Earth Science and Technology 2023, 461-463, 2023.12.
10. Tatsuki INOUE, Seelae PHAISOPHA, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA , Study on Crown Pillar Design in Transition from Open Pit Mining to Underground Mining in Sepon Mine, Laos , Proc. of International Symposium on Earth Science and Technology 2023, 454-455, 2023.12.
11. Yuma ISHII, Rika IRIGUCHI, Akihiro HAMANAKA, Kenichi ITAKURA, Takashi SASAOKA, Hideki SHIMADA, Junichi KODAMA, Gota DEGUCHI , Study on AE and Gas Generation from Subbituminous Coal and Lignite in Coal Heating Experiments , Proc. of International Symposium on Earth Science and Technology 2023, 450-453, 2023.12.
12. Ken HONGO, Akihiro HAMANAKA, Kenichi ITAKURA, Gota DEGUCHI, Kazuhiko TAKAHASHI, Junichi KODAMA, Shunsaku HADARA, Yukio HAMA, Ji-Hyum KIM, Shinya YAMANAKA, Takashi SASAOKA, Hideki SHIMADA , Solidification of CO2 through Injection of Blast Furnace Slag Slurry Using Microbubbles in Underground Coal Mine Goafs , Proc. of International Symposium on Earth Science and Technology 2023, 430-433, 2023.12.
13. Rika IRIGUCHI, Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Kenichi ITAKURA, Junichi KODAMA, Gota DEGUCH , Fundamental Study on the Effect of Water Injection on the Composition of Product Gas and the Reaction Temperature in Underground Coal Gasification , Proc. of International Symposium on Earth Science and Technology 2023, 232-236, 2023.12.
14. Ryutaro SHIMIZU, Xiaohu HU, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Application of New Ground Improvement Technique in Tunnel Floor to Control Floor Heave under Weak Strata, Proc. of International Symposium on Earth Science and Technology 2023, 43-46, 2023.12.
15. Bosong YU, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Fumihiko MATSUMOTO, Tomo MORITA , Investigating Box-jacking Forces in Soft Soils of Tokyo, Japan: A Comparative Study , Proc. of NO-DIG 2023 39th International Conference and Exhibition, CD-ROM, 2023.10.
16. Hideki SHIMADA, Peng MA, Takashi SASAOKA, Akihiro HAMANAKA, Fumihiko MATSUMOTO, Tomo MORITA , Prediction Equation of Jacking Force for Different Shapes of Rectangular Pipe Jacking , Proc. of NO-DIG 2023 39th International Conference and Exhibition, CD-ROM, 2023.10.
17. Seelae PHAISOPHA, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Phanthoudeth PONGPANYA, Seva SHORIN, Khounma SENTHAVISOUK , A Stope Mining Design with Consideration fo Hanging Wall When Transitioning from Open Pit Mining to Underground Mining for Sepon Gold Mine Deposit, Laos , Mining, https://doi.org/10.3390/mining3030027 , 3, 463-482, 2023.08.
18. Bosong YU, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA , Factors Affecting Jacking Force of Square Steel Pipe-roof in Tsunashima Tunnel: A Case Study , Proc. of The 2023 World Congress on Advances in Structural Engineering and Mechanics, CD-ROM, 2023.08.
19. Yifei ZHAO, Jinhong CHEN, Hideki SHIMADA, Takashi SASAOKA , Non-Ferrous Metal Price Point and Interval Prediction Based on Variation Mode Decomposition and Optimized LSTM Network , Mathematics, https://doi.org/10.3390/math11122738 , 11, 16p, 2023.06.
20. Akihiro HAMANAKA, Yuma ISHII, Kenichi ITAKURA, Takashi SASAOKA, Hideki SHIMADA, Nuhindro Priagung WIDODO, Budi SULISTIANTO, Junichi KODAMA, Gota DEGUCHI, Monitoring the Gasification Area and Its Behavior in Underground Coal Gasification by Acoustic Emission Technique Instead of Temperature Measurement , Scientific Reports, https://doi.org/10.1038/s41598-023-36937-0, 139, 12p, 2023.06.
21. Akihiro HAMANAKA, Yuma ISHII, Kenichi ITAKURA, Takashi SASAOKA, Hideki SHIMADA, Faqiang SU, Junichi KODAMA, Gota DEGUCHI , Assessment of Gasification Area with Acoustic Emission Instead of Temperature Monitoring in Underground Coal Gasification , Proc. of 26th World Mining Congress, 3458-3465, 2023.06.
22. Bosong YU, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Fumihiko MATSUMOTO, Tomo MORITA, A Jacking Force Study Based on Interpretation of Box Jacking Record: A Case Study of Curved Rectangular Box Jacking in Soft Soil in Saitama, Japan, Tunnelling and Underground Space Technology, https://doi.org/10.1016/j.tust.2023.105228, 139, 25p, 2023.05.
23. Hiroto HASHIKAWA, Pisith MAO, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA, Ulaankhuu BATSAIKHAN, Jiro OYA, Numerical Simulation on Pillar Design for Longwall Mining under Weak Immediate Roof and Floor Strata in Indonesia , Sustainability, https://doi.org/10.3390/su142416508, 14, 24, 13pp., 2022.12.
24. Soshi TORIGOE, Akihiro HAMANAKA, Hideki SHIMADA, Takashi SASAOKA, Shinji MATSUMOTO, Reduction of Acid Mine Drainage Generation with Reduction of Oxygen Concentration, Proc. of International Symposium on Earth Science and Technology 2022, 369-372, 2022.12.
25. Masato TAKEUCHI, Yoshiaki TAKAHASHI, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA, Shiro KUBOTA, Tei SABURI, Fundamental Study on Dynamics Failure of Concrete with Steel Reinforcement near Free Surfaces, Proc. of International Symposium on Earth Science and Technology 2022, 288-291, 2022.12.
26. Yifei ZHAO, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Simultaneous Stochastic Optimization Study of Open Pit Mining Complex under Uncertainty, Proc. of International Symposium on Earth Science and Technology 2022, 279-282, 2022.12.
27. Joan Atieno OYANGO, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, A Methodology for Slope Stability Analysis in Karst-prone Rock Mass Using Random Number Generator and Finite Element Analysis, Proc. of International Symposium on Earth Science and Technology 2022, 273-278, 2022.12.
28. Yuma ISHII, Akihiro HAMANAKA, Kenichi ITAKURA, Takashi SASAOKA, Hideki SHIMADA, Junichi KODAMA, Gota DEGUCHI, Study on AE Generation from Subbituminous Coal and Lignite in Coal Heating Experiments, Proc. of International Symposium on Earth Science and Technology 2022, 139-142, 2022.12.
29. Yuichiro ARAGANE, Ulaankhuu BATSAIKHAN, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA, Numerical Study on Underground Development from Open Pit Mining at the Naryn Shukhait Mine in Mongolia, Proc. of International Symposium on Earth Science and Technology 2022, 136-138, 2022.12.
30. Ulaankhuu BATSAIKHAN, Phanthoudeth PONGPANYA, Munkhzorig ENKHDELGER, Takashi SASAOKA, Hideki SHIMADA, Ian Krop TSUMA, The Study of the Correlation between Gate Road Direction and In-situ Major Horizontal Stress in Steeply Dipping Underground Coal Mining, Proc. of International Symposium on Earth Science and Technology 2022, 132-135, 2022.12.
31. Hiroto HASHIKAWA, Pisith MAO, Takashi SASAOKA, Akihiro HAMANAKA, Ulaankhuu BATSAIKHAN, Jiro OYA, Research on Safety Pillar in Longwall Mining under Weak Geological Condition by Means of Numerical Simulation, Proc. of International Symposium on Earth Science and Technology 2022, 126-131, 2022.12.
32. Yuka OOTA, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA, Fundamental Study on Applicability of Fractal Dimension for Evaluation of Fracture Conditions in Rock Mass at an Open Pit Mine, Proceedings of 12th Asian Rock Mechanics Symposium, 176-189, 2022.12.
33. Dyson MOSES, Hideki SHIMADA, Joan Atieno ONYANGO, Takashi SASAOKA, Akihiro HAMANAKA, Slope Design in Brecciated Carbonatite Complexes under High-Stress Regimes, Bulletin of Engineering Geology and the Environment, https://doi.org/10.1007/s10064-022-02993-5, 81, Article Number 494, 16pp., 2022.11.
34. Cho Thae OO, Dyson MOSES, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Joan Atieno OYANGO, Ulaankhuu BATSAIKHAN, Seelae PHAISOPHA, Ian Krop TSUMA, Design and Stope Stability Analysis of Multiple Concurrent Excavated Veins in Underground Mine; Case Study of Hermyingyi Tin-Tungsten (W-Sn) Mine, Geotechnical and Geological Engineering, https://doi.org/10.1007/s10706-022-02322-3, 24pp., 2022.11.
35. Ulaankhuu BATSAIKHAN, Yuichiro ARAGANE, Takashi SASAOKA, Hideki SHIMADA, Crown Pillar Design in The Transition from Open Pit to Underground in Narynsukhait (Ns) Coal Mine, Mongolia, Proceedings of 12th Asian Rock Mechanics Symposium, 176-189, 2022.11.
36. Peng MA, Hideki SHIMADA, Baosong MA, Takashi SASAOKA, Akihiro HAMANAKA, Fumihiko MATSUMOTO, Tomo MORITA, Simulation Investigation on the Engineering Effects of Geometric Parameters in Rectangular Pipe Jacking, Proc. of NO-DIG 2022 38th International Conference and Exhibition, Download Data, 2022.10.
37. Yukiko SHIRAISHI, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Fumihiko MATSUMOTO, Tomo MORITA, Effect on Deformation of Surrounding Ground in New Pipe Jacking Method with Different Excavation Shape, Proc. of NO-DIG 2022 38th International Conference and Exhibition, Download Data, 2022.10.
38. Joan Atieno ONYANGO, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Dyson MOSES, Stability Assessment of the Slopes of an Oceanside Coral Limestone Quarry under Drawdown Condition of Semidiurnal Ocean Tides, Mining, https://doi.org/10.3390/mining2030032, 2, 3, 589-615, 2022.09.
39. Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Shinji MATSUMOTO , Amelioration of Acidic Soil Using Fly Ash for Mine Revegetation in Post-mining Land , International Journal of Coal Science and Technology , https://doi.org/10.1007/s40789-022-00499-9 , 9, 2022.05.
40. Phanthoudeth PONGPANYA, Takashi SASAOKA, Hideki SHIMADA, Prediction of Multi-seam Mining-induced Surface Subsidence in Underground Coal Mine in Indonesia, ASEAN Engineering Journal, https://doi.org/10.11113/aej.V12.17263, 12, 2, 169-183, 2022.05.
41. Ulaankhuu BATSAIKHAN, Hiroto HASHIKAWA, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA , Numerical Study on the Application of the Pipe-Jacking Method for the Main Gate of an Underground Coal Mining in Weak Rock Mass , Applied Science, https://doi.org/10.3390/app12031719, 12, 3, Article No.1719, 13p. , 2022.02.
42. Peng MA, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Dyson MOSES, Tumelo K.M.DINTWE, Fumihiko MATSUMOTO, Baosong MA, Sheng HUANG, A New Method for Predicting the Friction Resistance in Rectangular Pipe-Jacking , Tunnelling and Underground Space Technology , Article No.104338, 14p. , 2022.02.
43. Shuai ZHANG, Jinhai LI, Liang CHEN, Mingwei ZHANG, Takashi SASAOKA, Hideki SHIMADA, Haiyang HE , Numerical Investigation of Influence of Fluid Rate, Fluid Viscosity, Perforation Angle and NF on HF Re-Orientation in Heterogeneous Rocks Using UDEC T-W Method , Machines, https://doi.org/10.3390/machines10020152 , 10, 2, Article No.152, 25p. , 2022.02.
44. Hai Pu, Fanfei Meng, Tumelo K.M Dintwe, Takashi Sasaoka, Junce Xu , CREEP AND BREAKAGE BEHAVIOR OF BROKEN ROCK IN CAVING ZONE OF ABUNDANT MINES UNDER TRIAXIAL COMPRESSION CONDITION, International Journal of Mining Science and Technology, http://dx.doi.org/10.2139/ssrn.4021887, 2022.02.
45. Pisith MAO, Hiroto HASHIKAWA, Takashi SASAOKA, Hideki SHIMADA, Zhijun WAN, Akihiro HAMANAKA, Jiro OYA , Numerical Investigation of Roof Stability in Longwall Face Developed in Shallow Depth under Weak Geological Conditions , Sustainability, https://doi.org/10.3390/su14031036 , 24, 1036, 23p, 2022.01.
46. Joan Atieno OYANGO, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA, Dyson MOSES, Tumelo K.M. DINTWE , Estimation of Rock Mass Properties Based on a Modified Geological Modified Index (GSI) and State of Kartsification , Proc. of International Symposium on Earth Science and Technology 2021, 10-15, 2021.11.
47. Seelae PHAISOPHIA, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Sunthorn PUMJAN, Songwut ARTITTONG, Phanthoudeth PONGPANYA, Patthana BOUNLIYONG, An Open Pit Design for Gold Mine Development in Laos, PDR , Proc. of International Symposium on Earth Science and Technology 2021, 16-20, 2021.11.
48. Las KURI, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Dyson MOSES , Study of Slope Stability of Tailing Dam Height Expansion from Elevation (RL) 2000m to RL 2035 at Hidden Valley Mine, Papua New Guinea , Proc. of International Symposium on Earth Science and Technology 2021, 21-26, 2021.11.
49. Hiroto HASHIKAWA, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA, Masatomo ICHINOSE , Evaluation of Pillar Stability in Underground Coal Mine under Weak Geological Condition in Indonesia , Proc. of International Symposium on Earth Science and Technology 2021, 83-86, 2021.11.
50. Sho TSURUKAWA, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA, Yoshiaki TAKAHASHI, Tei SABURI , Study on the Influence of Blasting Vibration due to Bench in Open-pit Mines , Proc. of International Symposium on Earth Science and Technology 2021, 87-89, 2021.11.
51. Yuki ANDO, Akihiro HAMANAKA, Kenichi ITAKURA, Takashi SASAOKA, Hideki SHIMADA, Junichi KODAMA, Gota DEGUCHI , Applicability of AE Monitoring for Estimating Gasification Zone in Underground Coal Gasification (UCG) , Proc. of International Symposium on Earth Science and Technology 2021, 113-116, 2021.11.
52. Kan OTSUBO, Akihiro HAMANAKA, Hideki SHIMADA, Takashi SASAOKA, Shinji MATSUMOTO , Fundamental Study on the Effect of Oxygen Concentration on Acid Mine Drainage Generation , Proc. of International Symposium on Earth Science and Technology 2021, 315-318, 2021.11.
53. Tumelo K.M. DINTWE, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Dyson MOSES, Ma PENG, Fanfei MENG, Seifei LIU, Ronald SSEBADDUKA, Joan Atieno OYANGO, Numerical Simulation of Crown Pillar Behaviour in Transition from Open Pit to Underground Mining , Geotechnical and Geological Engineering, https://doi.org/10.1007/s10706-021-02022-4 , 2021.11.
54. Akihiro HAMANAKA, Yoshimitsu MAKABE, Ken-ichi ITAKURA, Takashi SASAOKA, Hideki SHIMADA, Nuhindro Priagung WIDODO, Budi SULISTIANTO, Gota EGUCHI , Study on Generating Acoustic Emission with Heating Coal for Application as Monitoring System for Underground Coal Gasification , IOP Conference Series: Earth and Environmental Science , 861, Article number 022036 , 2021.10.
55. Hideki SHIMADA, Hiroto HASHIKAWA, Xiaohu HU, Takashi SASAOKA, Akihiro HAMANAKA , Application of Under-pinning Pipe Jacking on Tunnel Auxiliary Construction , IOP Conference Series: Earth and Environmental Science, doi:10.1088/1755-1315/861/3/032038 , 861, Article number 032038 , 2021.10.
56. Ma PENG, Hideki SHIMADA, Takashi SASAOKA, Dyson MOSES, Fumihiko MATSUMOTO, Xuehua CHEN , Investigation on the Engineering Effects of the Geometrical Configuration of the Jacking Rectangular Pipe , Tunnelling and Underground Space Technology Incorporating Trenchless Technology, https://doi.org/10.1016/j.tust.2021.104239 , 2021.10.
57. Hideki SHIMADA, Hiroto HASHIKAWA, Akihiro HAMANAKA, Takashi SASAOKA, Sugeng WAHYUDI, Ground Improvement with Sodium Silicate Chemical Grouting to Tropical Volcanic Regions, Proc. of 5th International Workshop on Rock Mechanics and Engineering Geology in Volicanic Fields , CD-ROM, 2021.09.
58. Wen KAI, Wei ZENG, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA , Numerical and Theoretical Study on the Jacking Force Prediction of Slurry Pipe Jacking Traversing Frozen Ground , Tunnelling and Underground Space Technology, doi: 10.1016/j.tust.2021.104076 , 115, 6, 2021.09.
59. Takashi SASAOKA, Hiroto HASHIKAWA, Akihiro HAMANAKA, Hideki SHIMADA, Keisuke TAKAHASHI, Study on Deformation Behavior of Sediments and Applicability of Sealants in Seabed Mining, Advances in Science, Technology and Engineering Systems , 6, 4, 170-175, 2021.07.
60. Fanfei Meng, Hai Pu, Takashi Sasaoka, Hideki Shimada, Sifei Liu, Tumelo K.M Dintwe, Ziheng Sha, Time effect and prediction of broken rock bulking coefficient on the base of particle discrete element method, International Journal of Mining Science and Technology, 2021.05.
61. Dyson MOSES, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Tumelo K. M DINTWE, Joan A. ONYANGO, Cho Thae OO, Evaluation of the Influence of In Situ Stress on the Stability of Mine Pit Walls: A Case Study of Songwe Mine, Energy and Earth Science, doi:10.22158/ees.v4n2p1, 4, 2, 2021.05.
62. Peng MA, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Tumelo K.M.Dintwe, Donjian PAN , Investigation on the Performance of Pipe Roof Method Adjacent to the Underground Construction , Journal of Geotechnical and Geological Engineering, 12p., 2021.02.
63. Fanfei MENG, Chunde PIAO, Bin SHI, Takashi SASAOKA, Hideki SHIMADA , Calculation Model of Overburden Subsidence in Mined-out Area Based on Brillouin Optical Time-domain Refrectometer Technology , International Journal of Rock Mechanics and Mining Science , 12p., 2021.01.
64. Tumelo K.M.DINTWE, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Dyson MOSES, Sifei LIU, Fanfei MENG, Effects of Sublevel Open Stope Underground Mining on Surface and Open Pit Slopes, Journal of Geoscience and Enviroment Protection, 1, 96, 11p, 2021.01.
65. Sifei LIU, Jingyi CHENG, Takashi SASAOKA, Hideki SHIMADA, Zhijun WAN, Yuan ZHANG , Study on Evaluation Technology of Coal Pillar Stability Base on Vision Technology , Proc. of International Symposium on Earth Science and Technology 2020, 376-381, 2020.11.
66. Ulaankhuu BATSAIKHAN, Takashi SASAOKA, Hideki SHIMADA, Sugeng WAHYUDI , Study of the Roadway Stability and Design of Support System in Underground Coal Mine , Proc. of International Symposium on Earth Science and Technology 2020, 311-316, 2020.11.
67. Dyson MOSES, Hideki SHIMADA, Takashi SASAOKA , Akihiro HAMANAKA, Tumelo K.M.DINTWE, Peng MA, Fanfei MENG, Cho Thae OO , Assessment of the Influence of a Brecciated Zone on Slope Stability , Proc. of International Symposium on Earth Science and Technology 2020, 241-246, 2020.11.
68. Yuki SAKAMOTO, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA, Dyson MOSES , Slope Design and Slope Stability Analysis of Carbonatite Mine at Songwe Hill in Malawi , Proc. of International Symposium on Earth Science and Technology 2020, 237-240, 2020.11.
69. Las KURI, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Cho Thae OO , Slope Stability Analysis of Hamata Tailings Dam, Hidden Valley Mine, Papua New Guinea , Proc. of International Symposium on Earth Science and Technology 2020 , 233-236, 2020.11.
70. Yoshimitsu MAKABE, Akihiro HAMANAKA, Kenichi ITAKURA, Junichi KODAMA, Gota DEGUCHI, Nuhindro Priagung WIDODO, Budi SULISTIANTO, Takashi SASAOKA, Hideki SHIMADA , Experimental Study on Co-axial System with A Horizontal Well of Underground Coal Gasification to Evaluate Gasification Efficiency , Proc. of International Symposium on Earth Science and Technology 2020 , 182-185, 2020.11.
71. Yoshitaka NAKAO, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA , Control the Particle Size of Muck Pile with Delay Time Considering Discontinuity of Rock Mass , Proc. of International Symposium on Earth Science and Technology 2020, 86-89, 2020.11.
72. Ryota TAKAHASHI, Xiaohu HU, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Fumihiko MATSUMOTO, Tomo MORITA, Masatomo ICHINOSE , Numerical Study on Applicability of Under-pinning Method Using Pipe Jacking and Influence on Surrounding Ground , Proc. of International Symposium on Earth Science and Technology 2020, 82-85, 2020.11.
73. Cho Thae OO, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA , Analyze the Stability of Underground Mine Based on Different Vein Angles and GSI values (Sn-W Deposits) at Hermyin Gyi Mine, Myanmar , Proc. of International Symposium on Earth Science and Technology 2020, 76-81, 2020.11.
74. Fanfei MENG, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA , Mechanical Behavior of Broken Rock Mass under Triaxial Compression Based on Particle Discrete Elements , Proc. of International Symposium on Earth Science and Technology 2020 , 70-75, 2020.11.
75. Tumelo K.M.DINTWE, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Dyson MOSES, Peng MA, Fanfei MENG , Effects of Underground Mining on the Open Pit Slope Walls , Proc. of International Symposium on Earth Science and Technology 2020, 66-69, 2020.11.
76. Ulaankhuu BATSAIKHAN, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA , Effect of the Seam Dip Angle in Inclined Extra-thick Coal Seam Mine , Proc. of International Symposium on Earth Science and Technology 2021, 4-9, 2020.11.
77. Takashi Sasaoka, Pisith Mao, Hideki Shimada, Akihiro Hamanaka, Jiro Oya, Numerical Analysis of Longwall Gate-Entry Stability under Weak Geological Condition: A Case Study of an Indonesian Coal Mine, Energies, https://doi.org/10.3390/en13184710, 13, 1-15, 2020.09.
78. Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Shinji MATSUMOTO , Evolution of Plant Growth with Mixture of Fly Ash to Acidic Soil for Rehabilitation of Disturbed Land in Open-cut Mines , Proc. of 3rd International Symposiumon Land Reclamation and Ecological Restoration, CD-ROM, 2020.09.
79. Dyson MOSES, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Tumelo K. DINTWE, Sugeng WAHYUDI , Rock Slope Stability Analysis by Using Integrated Approach , World Journal of Engineering and Technology World Journal of Engineering and Technology, https://doi.org/10.4236/wjet.2020.83031 , 8, 3, 405-428, 2020.08.
80. Kazuki MAEHARA, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Development of Filling Material with Fly Ash and Slag as Lubricant in Pipe Jacking Under Acid Sulfate Soils, Inzynieria Mineralna, Vol.45, No.1, 89-94, 2020.07.
81. Takashi SASAOKA, Akihiro HAMANAKA, Takahiro FUNATSU, Hideki SHIMADA, Keisuke TAKAHASHI , Study on Addition of Surfactants Agents to Improve the Behavior of High Water Content Sediment for Rare Earth Mining in Deep Sea, Inzynieria Mineralna, Vol.45, No.1, 183-188, 2020.07.
82. Pisith MAO, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Sugeng WAHYUDI, Jiro OYA, Naung NAUNG, Three Dimensional Analysis of Gate Entry Stability in Multiple Seams Longwall Coal Mine Under Weak Rock
Conditions, Earth Science Research, https://doi.org/10.5539/esr.v9n1p72, 9, 1, 72-78, 2020.06.
83. Thant Swe WIN, Sendy DWIKI, Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Shinji MATSUMOTO, Ginting Jalu KUSUMA , Application of Fly Ash and Organic Material as Dry Cover System in Prevention of Acid Mine Drainage Generation, Journal of Geoscience and Environment Protection, 10.4236/gep.2020.85004, 8, 5, 56-64, 2020.05.
84. Kai Wen, Hideki Shimada, Wei Zeng, Takashi Sasaoka, Deyu Qian , Frictional analysis of pipe-slurry-soil interaction and jacking force prediction of rectangular pipe jacking , European Journal of Environmental and Civil Engineering, 10.1080/19648189.2018.1425156 , 24, 6, 814-832, 2020.05, Predictive model and formula of jacking force has been well-established for circular pipe jacking in the past decades. However, the frictional mechanism of pipe–soil–slurry and jacking force prediction of rectangular pipe jacking has not well been understood. Nowadays, the rectangular pipe jacking is widely used, because of its over 20% larger effective usable area than that of circular pipe as underground facilities, with the same cross-sectional area. Nevertheless, the corresponding prediction models of thrust of rectangular pipe jacking are lacking. In order to further understand the frictional mechanism of slurry rectangular pipe jacking, five classical analytical calculation models have been proposed, considering the pipe–soil–slurry interaction, and prediction formulas are obtained. Then, 3D finite difference method was introduced to estimate the jacking force by using FLAC3D. Finally, three case studies have been carried out to validate the proposed models. The results show that the numerical and theoretical results have good consistency, and what is more, the measured jacking force can be well included within the ranges of analytical models presented in this paper, which can improve the thrust prediction of rectangular pipe jacking. .
85. Sugeng WAHYUDI, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Tsedendorj AMARSAIKHAN, Pisith MAO, Tumelo K. DINTWE, Dyson MOSES, Study of Internal Waste Dump - Induced Shear Stress Behavior on Pit-Slope, Journal of Geoscience and Environment Protection, 10.4236/gep.2020.84006, 8, 71-86, 2020.04.
86. Thant Swe WIN, Hideki SHIMADA, Akihiro HAMANAKA, Takashi SASAOKA, Sugeng WAHYUDI, Hiroto YAMASAKI, Shinji MATSUMOTO, Myo Min TUN, Determination of Acid-generating Potential of Waste Rocks in Kyaupahto Gold Mine, Myanmar, International Journal of Scientific Research in Multidisciplinary Studies, 6, 4, 25-33, 2020.04.
87. Kazuki Maehara, Akihiro Hamanaka, Takashi Sasaoka, Hideki Shimada, Seiya Sakuma, Study on Control of Wall Deflection in Earth Stepped-Twin Retaining Wall Using Anchor Method by means of Numerical Simulation, Advances in Civil Engineering, https://doi.org/10.1155/2020/2710954, Vol.2020, 2020.01.
88. Fanfei MENG, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Sugeng WAHYUDI, Chunde PIAO , Subsidence Calculation Model of Different Zone after Mining Based on Optical Fiber Sensor , Proc. of International Symposium on Earth Science and Technology 2019, 178-182, 2019.12.
89. Takahiro SHIOMORI, Takashi SASAOKA, Sugeng WAHYUDI, Akihiro HAMANAKA, Hideki SHIMADA , Effect of Firing Pattern on the Size Distribution of Rock Fragmentation in Open Pit Mine , Proc. of International Symposium on Earth Science and Technology 2019, 228-232, 2019.12.
90. Cho Thae OO, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Sugeng WAHYUDI, Tun NAING , Preliminary Study of Mine Closure for Underground Mines in Myanmar , Proc. of International Symposium on Earth Science and Technology 2019, 400-403, 2019.12.
91. Bilguun ENKHBOLD, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Sugeng WAHYUDY, Investigation on Slope Stability of Internal Dump of the Baganuur Open Pit Mine in Mongolia , Proc. of International Symposium on Earth Science and Technology 2019, 404-406, 2019.12.
92. Yoshihiro TAGASHIRA, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA, Keisuke TAKAHASHI , Study of Applicability of Sealing Material with Low Specific Gravity for Suction Mining of Rare-earth Rich Mud , Proc. of International Symposium on Earth Science and Technology 2019, 546-548, 2019.12.
93. Hideki SHIMADA, Sugeng WAHYUDI, Takashi SASAOKA, Akihiro HAMANAKA, Yasuharu TOSHIDA, Tomohiko ABE , Application of Sodium Silicate Chemical Grouting to Tropical Regions , Proc. of the 28th International Symposium on Mine Planning and Equipment Selection - MPES 2019, 390-398, 2019.12.
94. Takashi SASAOKA, Yoshiaki TAKAHASHI, Akihiro HAMANAKA, Sugeng WAHYUDI, Hideki SHIMADA , Effect of Delay Time and Firing Patterns on the Size of Fragmented Rocks by Bench Blasting , Proc. of the 28th International Symposium on Mine Planning and Equipment Selection - MPES 2019, 449-456, 2019.12.
95. Naung NAUNG, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Sugeng WAHYUDI, Pisith MAO , Rock Mechanics and Geotechnical Applications Evaluation on the Instability of Stope Mining Influenced by the Risks of Slope Surface and Previous Mined-out Activities , Proc. of the 28th International Symposium on Mine Planning and Equipment Selection - MPES 2019 , 479-487, 2019.12.
96. Pisith MAO, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Sugeng WAHYUDI, Jiro OYA, Naung NAUNG , Numerical Investigation on Gate-Entry Stability of Trial Panel in Indonesia Longwall Coal Mine , Proc. of the 28th International Symposium on Mine Planning and Equipment Selection - MPES 2019, 499-507, 2019.12.
97. Shogo IKEMATSU, Takashi SASAOKA, Akihiro HAMANAKA, Hideki SHIMADA , Study on the Safety Distance between the Mining Area and the Underground Space for Crushing Facility under Different Rock Mass Conditions at Limestone Quarry , Proc. of 5th ISRM Young Scholars' Symposium on Rock Mechanics & International Symposium on Rock Engineering for Innovative Future, USB-Memory, 2019.12.
98. Kazuki MAEHARA, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Fumihiko MATSUMOTO, Tomo MORITA , Fundamental Study on Application of Underpinning Method Using Pipe Jacking by Means of Numerical Simulation , Proc. of 5th ISRM Young Scholars' Symposium on Rock Mechanics & International Symposium on Rock Engineering for Innovative Future, USB-Memory, 2019.12.
99. Thant Swe WIN, Hideki SHIMADA, Akihiro HAMANAKA, Takashi SASAOKA, Sugeng WAHYUDI, Hiroto YAMASAKI, Shinji MATSUMOTO, Myo Min TUN, Assessing the Potential Acid Forming Waste Rocks in Kyaukpahto Gold Mine, Kawlin Township, Sagaing Region, Myanmar , Proc. of 5th ISRM Young Scholars' Symposium on Rock Mechanics & International Symposium on Rock Engineering for Innovative Future, USB-Memory, 2019.12.
100. Naung NAUNG, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Sugeng WAHYUDI, Pisith MAO , Risk Evaluations for Stope Mining Affected by Slope Surface , Proc. of 5th ISRM Young Scholars' Symposium on Rock Mechanics & International Symposium on Rock Engineering for Innovative Future, USB-Memory, 2019.12.
101. Tomonori HOSHINO, Hideki SHIMADA, Takashi SASAOKA , Study on the Influence of Ground Characteristics on Wearing of Shield Machine Cutter Bit in Gravel Ground , Proc. of 5th ISRM Young Scholars' Symposium on Rock Mechanics & International Symposium on Rock Engineering for Innovative Future, USB-Memory, 2019.12.
102. Pisith MAO, Tsuyoshi SAISHO, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Sugeng WAHYUDI, Jiro OYA, Naung NAUNG , Numerical Analysis of Longwall Gate-Entry Stability under Difference Remains Coal Thickness , Proc. of 5th ISRM Young Scholars' Symposium on Rock Mechanics & International Symposium on Rock Engineering for Innovative Future, USB-Memory, 2019.12.
103. Kazuki Maehara, Takashi Sasaoka, Akihiro Hamanaka, Hideki Shimada , Effect of Fatty Acids Addition into Backfilling Material in Over-cutting Area on Improvement of Lubrication Performance for Pipe Jacking , The Open Civil Engineering Journal , 10.2174/1874149501913010281, 13, 281-287, 2019.12.
104. Akihiro HAMANAKA, Han Huor OENG, Kazuki MAEHARA, Takashi SASAOKA, Hideki SHIMADA, Toru SATO , Effects of Lubricants in Over-cutting Area of Pipe Roof Method on Reducing Surface Settlement , Proc. of VCRES 2019 International Symposium, 141-148, 2019.11.
105. Yoshiaki TAKAHASHI, Takashi SASAOKA, Sugeng WAHYUDI, Akihiro HAMANAKA, Hideki SHIMADA, Tei SABURI, Shiro KUBOTA, Yuji OGATA , The Effect of Blasting Designs and Rock Mass Conditions on Flyrock and the Its Prediction , Proc. of 10th International Conference on Explosives and Blasting (ICEB 10), 83-90, 2019.10.
106. Hideki SHIMADA, Takashi SASAOKA, Sugeng WAHYUDI, Akihiro HAMANAKA, Fumihiko MATSUMOTO, Tomo MORITA , Stability of Surrounding Soil by Using Underpinning Pipe Jacking Method , Proc. of NO-DIG 2019 37th International Conference and Exhibition, USB-Memory, 2019.09.
107. Yoshiaki TAKAHASHI, Takashi SASAOKA, Sugeng WAHYUDI, Akihiro HAMANAKA, Hideki SHIMADA , Control the Size and Uniformity of Rock Fragmentation by Optimizing Firing Pattern in Open Pit Mine , Geoscience Research, https://dx.doi.org/10.22606/gr.2019.42001 , 4, 2, 19-24, 2019.08.
108. Shinji MATSUMOTO, Akihiro HAMANAKA, Kaito MURAKAMI, Hideki SHIMADA, Takashi SASAOKA , Securing Topsoil Rehabilitation Using Fly Ash in Open-cast Coal Mine: Effects of Fly Ash on Plant Growth , Journal of the Polish Mineral Engineering Society, http://doi.org/10.29227/IM-2019-01-02 , 43, 1, 13-18, 2019.08.
109. Kazuki MAEHARA, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA , Development of Filling Material with Fly Ash and Slag as Lubricant in Pipe Jacking under Acid Sulfate Soils , Proc. of 23rd International Conference on Environment and Mineral Processing and Workshop Waste - Secondary Raw Materials , 115-119, 2019.06.
110. Takashi SASAOKA, Akihiro HAMANAKA, Takahiro FUNATSU, Hideki SHIMADA, Keisuke TAKAHASHI , Study on Addition of Surfactants Agents to Improve the Behavior of High Water Content Sediment for Rare Earth Mining in Deep Sea , Proc. of 23rd International Conference on Environment and Mineral Processing and Workshop Waste - Secondary Raw Materials, 241-246, 2019.06.
111. Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Shinji MATSUMOTO , Experimental Study on Soil Erosion under Different Soil Composition Using Rainfall Simulator , Plant, Soil and Environment , https://doi.org/10.17221/68/2019-PSE , 65, 4, 181-188, 2019.04.
112. Seiya SAKUMA, Kazuki MAEHARA, Takahiro FUNATSU, Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA , Analysis of the Factors for Displacement of Earth Retaining Wall with Twin-stepped Construction , World Journal of Engineering and Technology, 7, 1, 114-121, 2019.01.
113. Naung NAUNG, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Sugeng WAHYUDI, Pisith MAO , Fundamental Study of Stope and Barrier Pillar Stability by Using Cut and Fill Method for Redevelopment of Rest Gold Mine, Myanmar , Proc. of 27th International Symposium on Mine Planning & Equipment Selection, CD-ROM , 2018.11.
114. Akihiro HAMANAKA, Hiroto YAMASAKI, Takashi SASAOKA, Hideki SHIMADA, Shinji MATSUMOTO , Application of Fly Ash to Acidic Soil to Improve Plant Growth in Disturbed Land of Open-cut Mining , Proc. of 27th International Symposium on Mine Planning & Equipment Selection, CD-ROM , 2018.11.
115. Takahiro FUNATSU, Tomohiko SAKIYAMA, Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Keisuke TAKAHASHI , Modification of High Water Content Sediment for Rare Earth Mining in Deep Sea by Surfactants Agents , Proc. of 27th International Symposium on Mine Planning & Equipment Selection, CD-ROM , 2018.11.
116. Naung NAUNG, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Sugeng WAHYUDI, Pisith MAO , Optimization of Stope's Stability under the Influence of Overlaying Mined-out Regions , Proc. of International Symposium on Earth Science and Technology 2018, 159-164, 2018.11.
117. Pisith MAO, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Sugeng WAHYUDI, Naung NAUNG , Numerical Analysis of Seam Interaction on Gate Entry in Multiple Seams Longwall Coal Mine in Indonesia , Proc. of International Symposium on Earth Science and Technology 2018, 165-169, 2018.11.
118. Tumelo K.M. DINTWE, Takashi SASAOKA, Hideki SHIMADA, Ma PENG, Takafumi SEIKI, Shizuo NOGUCHI , A Fundamental Study on the Static and Dynamic Stability of the Room and Pillar Underground Quarry in Oya , Proc. of International Symposium on Earth Science and Technology 2018, 170-174, 2018.11.
119. Yoshiaki TAKAHASHI, Shiro KUBOTA, Hajime YAMAUCHI, Tei SABURI, Takashi SASAOKA, Sugeng WAHYUDI, Takahiro FUNATSU, Hideki SHIMADA, Yuji OGATA, Experimental and Numerical Study on Effect of Blasting Designs on Stress Wave Propagation and Rock Fracture Mechanism , Proc. of International Symposium on Earth Science and Technology 2018, 235-239, 2018.11.
120. Masahiro TANAKA, Hideki SHIMADA, Takahiro FUNATSU, Takashi SASAOKA, Akihiro HAMANAKA, Fumihiko MATSUMOTO, Tomo MORITA , Study on the Application of Under-pinning Method Using Pipe Jacking Method , Proc. of International Symposium on Earth Science and Technology 2018, 274-277, 2018.11.
121. Han Huor OENG, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Takahiro FUNATSU, Sugeng WAHYUDI, Toru SATO, Pisith MAO , Fundamental Study on the Effects of Grouting Materials of Pipe Roof Method on Reducing Surface Settlement , Proc. of International Symposium on Earth Science and Technology 2018, 278-282, 2018.11.
122. Kazuki MAEHARA, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Takahiro FUNATSU, Development of Backfilling Material in Over-cutting Area with Fatty Acids to Decrease Thrust for Pipe Jacking , Proc. of International Symposium on Earth Science and Technology 2018, 283-286, 2018.11.
123. Cho Thae OO, Takashi SASAOKA, Hideki SHIMADA, Takahiro FUNATSU, Akihiro HAMANAKA, Sugeng WAHYUDI, Tun NAING, Naung NAUNG , Design of Underground Mining System at Shallow Area in Bawsaing Mine, Myanmar , Proc. of International Symposium on Earth Science and Technology 2018, 287-291, 2018.11.
124. Satoru ASANO, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Yasuharu TOSHIDA, Tomohiko ABE , Fundamental Study of Sodium Silicate Chemical Grouting Application in the Case of Indonesian Soil Environment , Proc. of International Symposium on Earth Science and Technology 2018 , 292-296, 2018.11.
125. Thant Swe WIN, Hideki SHIMADA, Akihiro HAMANAKA, Takashi SASAOKA, Takahiro FUNATSU, Sugeng WAHYUDI, Myo Min TUN , Identification of Acid-generating Waste Rocks from Waste Dump in Kyaukpahto Gold Mine, Kawlin Township, Sagaing Region, Myanmar , Proc. of International Symposium on Earth Science and Technology 2018, 342-347, 2018.11.
126. Xiangyang SUN, Amarsaikhan TSEDENDORJ, Takashi SASAOKA, Akihiro HAMANAKA, Sugeng WAHYUDI, Hideki SHIMADA , Preliminary Study on Optimization of Buffer Zone between Open-pit and Dumping Site in the Open-pit Copper Mine in Mongolia , Proc. of International Symposium on Earth Science and Technology 2018, 403-408, 2018.11.
127. Hiroto YAMASAKI, Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Shinji MATSUMOTO , Improvement of Plant Growth of Acacia Mangium with Addition of Fly Ash into Acidic Soil , Proc. of International Symposium on Earth Science and Technology 2018 , 412-417, 2018.11.
128. Xiaohu HU, Kazuki MAEHARA, Peng MA, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Toru SATO , Design of Pipe Roof Jacking Method on Adjacent Building Structure, Proc. of International Symposium on Earth Science and Technology 2018, 418-423, 2018.11.
129. Peng MA, Takashi SASAOKA, Hideki SHIMADA, Tumelo K.M. DINTWE, Deyu QIAN, Nong ZHANG , Study on the Application of Screw Bolt in Coal Mine Roadway Support , Proc. of International Symposium on Earth Science and Technology 2018, 424-427, 2018.11.
130. Kizuku URATA, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA , Study on the Effects of Gravel Characteristics and Ground Conditions on Cutter Bit Wear of Shield Machine in Gravel Ground , Proc. of International Symposium on Earth Science and Technology 2018, 428-432, 2018.11.
131. Seiya SAKUMA, Kazuki MAEHARA, Takahiro FUNATSU, Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA , Study of the Factors Affecting Behavior of Earth Stepped-twin Retaining Wall , Proc. of International Symposium on Earth Science and Technology 2018, 433-436, 2018.11.
132. Shohei ETO, Naung NAUNG, Hideki SHIMDADA, Takashi SASAOKA, Akihiro HAMANAKA, Takahiro FUNATSU, Sugeng WAHYUDI , Fundamental Study of Stope and Barrier Pillar Stability under Overlaying Mined-out Area in Modi Taung Gold Mine, Myanmar , Proc. of International Symposium on Earth Science and Technology 2018, 467-470, 2018.11.
133. Meng FANFEI, Hai PU, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Sugeng WAHYUDI , Simulation of Fracture Extension Law of Roof under the Case of Time-dependent Behavior and Seepage Action , Proc. of International Symposium on Earth Science and Technology 2018, 483-486, 2018.11.
134. Hideki Shimada, Kazuki Maehara, Masahiro Tanaka, Sugeng Wahyudi, Takashi Sasaoka, Akihiro Hamanaka, Fumihiko Matsumoto, and Tomo Morita, Behavior of Soil around Rectangular Pipe by Using New Type Excavation of Pipe Jacking, Proceeings of International No-Dig 2018 36th International Conference and Exhibition, USB (Paper number 95), 2018.10.
135. Fumihiko Matsumoto, Tomo Morita, Eiji Sakai, Hideki Shimada, Takashi Sasaoka and Kikuo Matsui, Study On Bit Wear for High Density Slurry Pipe Jacking Crusher Type Machine Through A Hard Ground Pipe Jacking, Proceedings of International No-Dig 2018 36th International Conference and Exhibition , USB memory (Paper Number 79), 2018.10.
136. Naung NAUNG, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA,Sugeng WAHYUDI, Pisith MAO, Geotechnical Assessment of Rock Mass and Potential Failures in Stope Mining at NPGPGL Underground Gold Mine, Myanmar, Proc. 2018 Joint International Conference on Science, Technology and Innovation, 221-225, 2018.10.
137. Seiya SAKUMA, Hideki SHIMADA, Takashi SASAOKA , Case Study of Cutter Soil Mixing (CSM) Method on Hard Soil Conditions , Proc. of 10th Asian Rock Mechanics Symposium, CD-ROM , 2018.10.
138. Toru SATO, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA , Development of a Micro-tunnel Boring Machine (MTBM) in Pipe-roofing Considering Ground Conditions, CD-ROM , 2018.10.
139. Hideki SHIMADA, Sugeng WAHYUDI, Satoru ASANO, Kazuki MAEHARA, Takashi SASAOKA, Akihiro HAMANAKA , Application of Soil Improvement by Sodium Silicate-based Grouting on Indonesian Sand , Proc. of 10th Asian Rock Mechanics Symposium, CD-ROM, 2018.10.
140. Takashi SASAOKA, Kizuku URATA, Hideki SHIMADA, Tomoki HOSHINO, Toshihiro HATTORI, Tetsuo HATORI , Experimental Study on Quantitative Evaluation and Prediction Method of Cutter Bit Wear for Shield Machine in Gravel Ground , Proc. of 10th Asian Rock Mechanics Symposium, CD-ROM, 2018.10.
141. Shinji MATSUMOTO, Hirotaka ISHIMATSU, Hideki SHIMADA, Takashi SASAOKA, Ginting Jalu KUSUMA , Characterization of Mine Waste and Acid Mine Drainage Prediction by Simple Testing Methods in Terms of the Effects of Sulfate-Sulfur and Carbonate Minerals , Minerals, DOI:10.3390/min8090403 , 8, 14p., 2018.09.
142. Takashi Sasaoka, Hideki Shimada, Koichiro Watanabe, Takeshi Tsuji, Ryo Imai, Hajime Miki, Yasuhiro Fujimitsu, Yuichi Suigai, Kotaro Yonezu, Naoki Hiroyoshi, Cooperative program for resources engineering between Kyushu University and Hokkaido University , International Journal of Georesources and Environment, 10.15273/ijge.2018.03.028, 4, 3, 174-179, 2018.07.
143. Yoshiaki Takahashi, Takashi Sasaoka, Wahyudi Sugeng, Akihiro Hamanaka, Hideki Shimada, Tei Saburi, Shiro Kubota, Study on Prediction of Ground Vibration in Consideration of Damping Effect by Fragment in the Rock Mass, Journal of Geoscience and Enviromental Protection, 10.4236/gep.2018.66001, 6, 6, 1-11, 2018.06.
144. Hideki SHIMADA, Sugeng WAHYUDI, Takashi SASAOKA, Akihiro HAMANAKA, Shuichi FUJITA, Kikuo MATSUI, Optimum Backfilling Material into Over-cutting Area Surrounded by Acid Sulfate Soils in East Asian Countries, Proceedings of Trenchless Asia 2018, CD-ROM, 2018.05.
145. Wilson Siguemasa IRAMINA, Eduardo Cesar SANSONE, Michiel WICHERS, Sugeng WAHYUDI, Sergio Medicide ESTON, Hideki SHIMADA, Takashi SASAOKA , Comparing Blasting-induced Ground Vibration Models Using ANN and Empirical Geomechanical Relationship , International Engineering Journal, http://dx.doi.org/10.1590/0370-44672017710097 , 71, 1, 89-95, 2018.03.
146. Kai WEN, Hideki SHIMADA, Wei ZENG, Takashi SASAOKA, Deyu QIAN , Friction Analysis of Pipe-slurry-soil Interaction and Jacking Force Prediction of Rectangular Pipe Jacking , European Journal of Environmental and Civil Engineering, DOI. 10.1018/19648189.2018.1425156 , 2018.01.
147. Kai Wen, Hideki Shimada, Takashi Sasaoka, Zhiyi Zhang , Numerical Study of Plastic Response of Urban Underground Rock Tunnel Subjected to Earthquake , International Journal of Geo-Engineering, https://doi.org/10.1186/s40703-017-0066-7 , 8, 28, 2017.12.
148. Akihiro HAMANAKA, Takashi Sasaoka, Hideki Shimada , Study of Soil Spread at Rehabilitation Area for Promotion of Plant Growth in Open Cut Coal Mine in Kalimantan Area in Indonesia , Asian Journal of Environment & Ecology , 4, 4, 1-8, 2017.11.
149. Hideki Shimada, SUGENG WAHYUDI, Takashi Sasaoka, Akihiro HAMANAKA, Shizuo Ikuta , Feasibility of Chain Conveyor Cutter for Ocean Disposal Site's Construction , Journal of Geological Resource and Engineering, doi:10.17265/2328-2193/2017.04.003 , 5, 4, 169-177, 2017.11.
150. Zhiyi Zhang, Hideki Shimada, Takashi Sasaoka , Numerical Study on the Effectiveness of Grouting Reinforcement on Large Heaving Floor of Retained Gob-side Gateroad in Deep Underground Coalmine , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 26-31, 2017.11.
151. Satoru Asano, Rizky Satria Putranto, Hideki Shimada, Takashi Sasaoka, Akihiro HAMANAKA, Yasuharu Toshida, Tomohiko Abe , Fundamental Study of Sodium Silicate Chemical Grouting Application on Indonesian Sand , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 155-160, 2017.11.
152. Taiko Tagami, Tomohiko Sakiyama, Takahiro Funatsu, Akihiro HAMANAKA, Takashi Sasaoka, Hideki Shimada, Keisuke Takahashi , Study on Deformation Behavior of Rare-earth Elements Rich Mud and Applicability of Sealing Materials in Seabed Mining , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 161-164, 2017.11.
153. Shinji Matsumoto, Sendy Dwiki, Hideki Shimada, Takashi Sasaoka, Ginting Jalu Kusuma , Utilization of Coal Ash for Prevention of Environmental Issues in Mine Sites: Necessity of a Multidisciplinary Approach , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 165-168, 2017.11.
154. Naung Naung, Hideki Shimada, Takashi Sasaoka, Akihiro HAMANAKA, SUGENG WAHYUDI, Phanthoudeth Pongpanya, Tin Htun, Kyaw Htet Aung , Evaluation on Rock Mass Condition and Current Mining Condition in NPGPGL Underground Gold Mine, Myanmar , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 169-173, 2017.11.
155. Phanthoudeth Pongpanya, Takashi Sasaoka, Hideki Shimada, Akihiro HAMANAKA, SUGENG WAHYUDI, Naung Naung , Ground Behavior of Mine Portal Excavated in Poor Rock Mass at PT Gerbang Daya Mandiri Underground Coal Mine in Indonesia , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 174-181, 2017.11.
156. Kai Wen, Hideki Shimada, Takashi Sasaoka, Akihiro HAMANAKA, SUGENG WAHYUDI , Numerical Study on Tunnel Face Stability and Ground Deformation of Slurry Pipe Jacking in Cold Region , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 182-187, 2017.11.
157. Kizuku Urata, Takashi Sasaoka, Hideki Shimada, Akihiro HAMANAKA, Tomonori Hoshino , Experimental Study on the Influence of Gravel Characteristics and Gravel Content on the Cutter Bit Wear of Shield Machine in Gravel Ground , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 188-193, 2017.11.
158. Mitsuki Nishimori, Yoshiaki Takahashi, Takashi Sasaoka, SUGENG WAHYUDI, Akihiro HAMANAKA , Study on Prediction of Ground Vibration in Consideration of Fragmentation in the Rock , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN , 341-344, 2017.11.
159. Sendy Dwiki, Hideki Shimada, Rudy Sayoga Gautama, Takashi Sasaoka, Ginting Jalu Kusuma , Characterization of Fly Ash Types Based on Geochemical and Physical Behavior in the Using for Acid Mine Drainage Prevention, Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN , 345-350, 2017.11.
160. Thant Swe Win, Hideki Shimada, Akihiro HAMANAKA, Takashi Sasaoka, SUGENG WAHYUDI, Myo Min Tun , Preliminary Study on Acid-Generating Waste Rocks in the Open-pit Backfilling of Monywa Copper Deposit, Myanmar , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 351-356, 2017.11.
161. Masahiro Tanaka, Hideki Shimada, Takahiro Funatsu, Takashi Sasaoka, Akihiro HAMANAKA, Fumihiko Matsumoto, Tomo Morita , Study on Application of New Pipe Jacking Method with Rectangular Shape in Shallow Strata , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 391-394, 2017.11.
162. Han Hour Oeng, Hideki Shimada, SUGENG WAHYUDI, Takashi Sasaoka, Akihiro HAMANAKA, Toru Sato, Fundamental Study on Behavior of Surrounding Soil by Using Pipe Bursting , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 395-399, 2017.11.
163. Xiangyang Sun, Takashi Sasaoka, Hideki Shimada, SUGENG WAHYUDI, Akihiro HAMANAKA, Zhiyi Zhang , Preliminary Study on Mechanism of Floor Heave in Underground Coal Mine, Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 437-440, 2017.11.
164. Yoshiaki Takahashi, Tei Saburi, Takashi Sasaoka, SUGENG WAHYUDI, Shiro Kubota, Hideki Shimada, Yuji Ogata , Dynamic Strain Measurement by means of Digital Image Correlations Method for Study on Rock Fracture Mechanism Induced by Blasting , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 441-444, 2017.11.
165. Kentaro Nishie, Hideki Shimada, Sasaki Keiko, Takashi Sasaoka, Akihiro HAMANAKA, Shinji Matsumoto , Physical Influence of New Radioactive Material Adsorbent Using Montmorillonite on Cement Solidification Treatment , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 651-654, 2017.11.
166. Zaya Buyanbat, Hideki Shimada, Takashi Sasaoka, Akihiro HAMANAKA, SUGENG WAHYUDI, Sendy Dwiki , Fundamental Characterization of Waste Rock for Dry Cover Prevention Method of Acid Mine Drainage Generation by Using Fly Ash and Organic Material , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 750-752, 2017.11.
167. Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Ginting Jalu Kusuma , Environmental Conservation in Consideration of Regional Characteristics in Open-pit Coal Mine in Southeast Asia , Proc. of 53rd CCOP Annual Session, CD-ROM , 2017.10.
168. Kotaro Yamaguchi, Yoshiaki Takahashi, Takashi Sasaoka, Akihiro HAMANAKA, SUGENG WAHYUDI, Hideki Shimada , Experimental Study on the Effect of Blasting Patterns and Rock Mass Conditions on Flying Behavior of Fragmented Rock in Open Pit Metal Mine , Proc. of the 9th International Conference on Explosives and Blasting, 29-35, 2017.10.
169. Akihiro HAMANAKA, Shinji Matsumoto, Kaito Murakami, Hideki Shimada, Takashi Sasaoka , Application of a Mixture of Fly Ash and Topsoil for Rehabilitation in Open-pit Coal Mines in South East Asian Countries , Proc. of 2nd International Symposium on Land Reclamation and Ecological Restration, 233-237, 2017.10.
170. Hideki Shimada, Shinji Matsumoto, Akihiro HAMANAKA, Takashi Sasaoka, Ginting Jalu Kusuma , Effect of Acid Soil Properties on Soil Erosion at a Dumping Site in an Open-pit Coal Mine, Indonesia , Proc. of 2nd International Symposium on Land Reclamation and Ecological Restration, 239-244, 2017.10.
171. Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Ginting Jalu Kusuma , Environmental Issues in Open-cast Coal Mine in Southeast Asia: Interrelation of Environmental Problems within a Mine Operation in Indonesia , Proc. of Coal Mining and Utilization for Sustainable Development International Conference, CD-ROM , 2017.10.
172. Cho Tae Oo, Takashi Sasaoka, Akihiro HAMANAKA, Hideki Shimada, Tun Naing, Su Su Kyi, Wa Aung, Naing Zaw , Zonation and Preventative Measures of Landslide along Falam-Hakha Car Road, Chin State in Myanmar , Proc. of International Symposium on Earth Science and Technology 2017, Fukuoka JAPAN, 432-436, 2017.10.
173. Yoshiaki TAKAHASHI, Tei SABURI, Takashi SASAOKA, Sugeng WAHYUDI, Shiro KUBOTA, Hideki SHIMADA, Yuji OGATA , Study on Rock Fracture Mechanism Induced by Blasting and the Effect of Delay Time with Mortal Block , Proc. of The 6th International Symposium on Energetic Materials and Their Applications, 66-67, 2017.09.
174. Zhiyi Zhang, Hideki Shimada, Takashi Sasaoka, Akihiro HAMANAKA , Stability Control of Retained Goaf-side Gateroad under Different Roof Conditions in Deep Underground Y Type Longwall Mining , Journal of Sustainability, doi:10.3390/su9101671 , 9, 2017.09.
175. Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Akihiro HAMANAKA, Shizuo Ikuta, Development of Chain Conveyor Cutter Method and Its Application, Proc. of 26th International Symposium on Mine Planning & Equipment Selection, 129-136, 2017.08.
176. Takashi Sasaoka, Kizuku Urata, Hideki Shimada, Akihiro HAMANAKA, Yoshihiro Tanaka, Tomonori Hoshino, Koji Noguchi , Fundamental Study on Quantitative Evaluation and Prediction Method of Cutter Bit Wear for Shield Machine in Gravel Ground , Proc. of 26th International Symposium on Mine Planning & Equipment Selection, 145-151, 2017.08.
177. Keisuke TAKAHASHI, Toshiro YAMANAKA, Hideki Shimada, Takashi Sasaoka, Akihiro HAMANAKA , Application of Cement-based Sealants for Prevention and Remediation of Environmental Impact of Submarine Resource Mining , Proc. of 26th International Symposium on Mine Planning & Equipment Selection, 363-367, 2017.08.
178. Phanthoudeth Pongpanya, Takashi Sasaoka, Hideki Shimada, Akihiro HAMANAKA, SUGENG WAHYUDI , Numerical Study on Effect of Longwall Mining on Stability of Main Roadway under Weak Ground Condition , Journal of Geological Resources and Engineering, doi:10.17265/2328-2193/2017.03.001 , 3, 93-104, 2017.07.
179. Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Toru Sato, Masaya Hirai, Pipe Jacking / Micro-tunneling Technology in Japan and the Development of a New Micro-tunneling Boring Machine (MTBM), Journal of NO-DIG India, Vol. 8, No. 1, 10-15, 2017.06.
180. Hideki Shimada, Takashi Sasaoka, Akihiro HAMANAKA, Toru Sato, Fumihiko Matsumoto, Application of Pipe Jacking Technology into ASEAN Countries , Proc. of NASTT's 2017 No-Dig Show and ISTT's 35th annual International No-Dig, CD-ROM, 2017.04.
181. Phanthoudeth Pongpanya, Takashi Sasaoka, Hideki Shimada, SUGENG WAHYUDI, Study of Characteristics of Surface Subsidence in Longwall Coal Mine under Poor Ground Conditions in Indonesia , Earth Science Research Journal , http://dx.doi.org/10.5539/esr.v6n1p129 , 6, 1, 129-141, 2017.02.
182. Phanthoudeth Pongpanya, Takashi Sasaoka, Hideki Shimada, Ulaankhuu Badsaikhan, Jiro Oya, Sendy Dwiki, Tri Karian, Numerical Study on Roadway Stability under Weak Geological Condition of PT Gerbang Daya Mandiri Underground Coal Mine in Indonesia, Journal of Geological Science, 10.5176/2335-6774 3.1.26, 3, 1, 15-23, 2017.02.
183. Kai Wen, Hideki Shimada, Wei Zeng, Takashi Sasaoka, Akihiro HAMANAKA, Numerical Analysis of Face Stability of Slurry Pipe Jacking Tunnel in Frozen Ground , Earth Science Research , 6, 2, 1-18, 2017.02.
184. Seiichi Sakamoto, Shinji Matsumoto, Takashi Sasaoka, Hideki Shimada, Shuichi Fujita, Keisuke Takahashi, Fundamental Study on Deformation Behavior of Seafloor Covered with Sealing Materials in Seabed Mining , Proc. of International Symposium on Earth Science and Technology 2016, Fukuoka JAPAN , 74-78, 2016.12.
185. Shinji Matsumoto, Shunta Ogata, Hideki Shimada, Takashi Sasaoka, Ginting Jalu Kusuma, Effects of Soil Acidification on Soil Erosion in Open-cast Coal Mines in Indonesia , Proc. of International Symposium on Earth Science and Technology 2016, Fukuoka JAPAN , 160-164, 2016.12.
186. Toshinao Sasaki, Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Shuichi Fujita, Applicability of Chemical Grouting on Improvement of Soil in Indonesia , Proc. of International Symposium on Earth Science and Technology 2016, Fukuoka JAPAN , 85-89, 2016.12.
187. Sendy Dwiki, Hideki Shimada, Rudy Sayoga, Takashi Sasaoka, Ginting Jalu Kusuma, Evaluation of Oxygen Behavior in Overburden Dumping Area: A Field Measurement Study Comparing Potentially Acid Forming and Non-acid Forming Rock , Proc. of International Symposium on Earth Science and Technology 2016, Fukuoka JAPAN , 165-171, 2016.12.
188. Hirotaka Ishimatsu, Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Classification of Waste Rocks in Terms of Physical and Geochemical Property to Prevent Acid Mine Drainage in Open-cut Coal Mines in Indonesia , Proc. of International Symposium on Earth Science and Technology 2016, Fukuoka JAPAN , 172-176, 2016.12.
189. Zhiyi Zhang, Takashi Sasaoka, Hideki Shimada, SUGENG WAHYUDI, Optimization of Hard Roof Structure over Retained Goaf-side Gateroad by Pre-split Blasting Technology , Proc. of International Symposium on Earth Science and Technology 2016, Fukuoka JAPPN , 243-248, 2016.12.
190. Phanthoudeth Pongpanya, Takashi Sasaoka, Hideki Shimada, SUGENG WAHYUDI, Deyu Qian, Numerical Study on Failure Mechanism of Roadway in Case of High Horizontal Stress Condition , Proc. of International Symposium on Earth Science and Technology 2016, Fukuoka JAPAN , 337-340, 2016.12.
191. Yoshiaki Takahashi, Kotaro Yamaguchi, Takashi Sasaoka, SUGENG WAHYUDI, Hideki Shimada, Effects of Blasting Designs and Rock Mass Conditions on Rock Fragmentation Induced by Blasting in Open Pit Metal Mine , Proc. of International Symposium on Earth Science and Technology 2016, Fukuoka JAPAN , 341-344, 2016.12.
192. Shunta Ogata, Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Study on Effective Revegetation at Post-mining Land in Indonesian Open-cut Coal Mine, Proc. of International Symposium on Earth Science and Technology 2016 , 352-356, 2016.12.
193. Kai Wen, Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Deyu Qian, Preliminary Study on Application of Pipe Jacking Technology to Infrastructure Construction in Cold Regions , Proc. of International Symposium on Earth Science and Technology 2016, Fukuoka JAPAN , 669-672, 2016.12.
194. Naung Naung, Hideki Shimada, SUGENG WAHYUDI, Takashi Sasaoka, Tomo Morita, Fumihiko Matsumoto, Recent Pipe Jacking Technology in Japan and Its Application Examples into ASEAN Countries , Proc. of the 7th International Conference on Science and Engineering , 961-965, 2016.12.
195. Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Shuichi Fujita, Yasuhiro Yoshida, Takashi Senda, Practical Design of Over-cutting Area on Pipe Jacking Method by Application of Chemical Grouting, Proc. of the 8th Asian Joint Symposium on Geotechnical and Geoenvironmental Engineering, Tainan TAIWAN , CD-ROM, 2016.11.
196. Takashi Sasaoka, Hideki Shimada, Naung Naung, SUGENG WAHYUDI, Application of Pipe Jacking Technology to Development of Underground Mine Roadway under Weak Geological Condition , Proc. of International Conference on Earth Sciences and Sustainable Geo-resources Development, Hanoi VIETNAM, 2016.11.
197. Hideki Shimada, SUGENG WAHYUDI, Takashi Sasaoka, Akihiro HAMANAKA, Recent Pipe Jacking Technology in Japan and Its Application into ASEAN Countries , Proc. of 20th Annual National Conference on Geotechnical Engineering, Jakarta INDONESIA, 27-34, 2016.11.
198. Mingwei Zhang, Shengdong Liu, Deyu Qing, Hideki Shimada, Takashi Sasaoka, Determination of Microseismic Focus Energy Using Residual Seismic Wave Attenuation in Deep Rock Stratum , Proc. of International Symposium on Earth Science and Technology 2016, Fukuoka JAPAN , 46-49, 2016.11.
199. Takashi Sasaoka, Yoshiaki Takahashi, SUGENG WAHYUDI, Hideki Shimada, Tei Saburi, Shiro Kubota, Prediction of Blast-induced Ground Vibration Considering Rock Mass Fracture Condition , Proc. of 6th International Conference on Computer Application in the Mineral Industries, CD-ROM, 2016.10.
200. SUGENG WAHYUDI, Hideki Shimada, Rizky Satria Purtanto, Takashi Sasaoka, Yoshihiro Kanemasu, Yasuhara Toshida, Sodium Silicate-Based Grouting Material Performance on Various Soil Particle Size Fractions Under Acidic Conditions , Proc. of International NO-DIG Beijing 2016 34th International Conference and Exhibition, Beijing CHINA , CD-ROM, 2016.10.
201. Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Shizuo Ikuta, Application of Chain Conveyor Cutter (CCC) Method to Construction of Ocean Disposal Sites , Proc. of 9th Asian Rock Mechanics Symposium , CD-ROM, 2016.10.
202. Zhiyi Zhang, Hideki Shimada, Takashi Sasaoka, Wen Kai, Study on the Overlying Strata Movements and Stability Control of the Retained Goaf-side Gateroad , Memoirs of the Faculty of Engineering, Kyushu University , 6, 2, 1-17, 2016.10.
203. Hideki Shimada, SUGENG WAHYUDI, Takashi Sasaoka, Naung Naung, Phanthoudeth Pongpanya, Tunnel Crown Deformation Generated by Pipe Jacking Technology in a Weak Rock Underground Coal Mine , Proc. of International NO-DIG Beijing 2016 34th International Conference and Exhibition, Beijing CHINA , CD-ROM, 2016.10.
204. Toshinao Sasaki, Hideki Shimada, SUGENG WAHYUDI, Takashi Sasaoka, Shuichi Fujita, Yasuhiro Yoshida, Fundamental Study on Development of Filling Material into Tail-void Surrounded by Acid Sulfate Soils in Tropical Regions, Proc. of International NO-DIG Beijing 2016 34th International Conference and Exhibition, Beijing CHINA , CD-ROM, 2016.10.
205. Sendy Dwiki, Hideki Shimada, Rudy Sayoga Gautama, Takashi Sasaoka, Ginting Jalu Kusuma, Physical Changes of Coal-bearing Rock in the Dumping Site with the Utilization of Fly Ash and Organic Material as Cover Layer to Prevent Acid Mine Drainage Generation , Proc. of 9th Asian Rock Mechanics Symposium , CD-ROM, 2016.10.
206. SUGENG WAHYUDI, Hideki Shimada, Takashi Sasaoka, Ganda Marihot Simangunsong, Characteristics of Rock Blast Damage and Damage Criterion of Limestone Rock Mass , Proc. of 9th Asian Rock Mechanics Symposium , CD-ROM, 2016.10.
207. Yoshiaki Takahashi, Tei Saburi, Takashi Sasaoka, SUGENG WAHYUDI, Hideki Shimada, Yuji Ogata, Study on Effect of High Precision Detonation on Fracture Mechanism in Small Scale Blasting Tests, Proc. of 9th Asian Rock Mechanics Symposium, CD-ROM, 2016.10.
208. Takashi Sasaoka, Yoshiaki Takahashi, Kotaro Yamaguchi, SUGENG WAHYUDI, Hideki Shimada, Tei Saburi, Shiro Kubota, Study on Mechanism and Occurrence Conditions of Fly Rock at Bench Blasting, Proc. of 9th Asian Rock Mechanics Symposium, CD-ROM, 2016.10.
209. Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Shuichi Fujita, Yasuhiro Yoshida, Keisuke Takahashi, Development of Construction Material for Covering of Seabed Resources Using Fly Ash, Proc. of 9th Asian Rock Mechanics Symposium, CD-ROM, 2016.10.
210. Shunta Ogata, Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Effects of the Change of Soil pH on Soil Erosion in Indonesian Open-pit Coal Mine, Proc. of 9th Asian Rock Mechanics Symposium, CD-ROM, 2016.10.
211. Tri Karian, Takashi Sasaoka, Hideki Shimada, Budi Sulistianto, Sill Pillar Application for Crown Pillar Recovery Optimization in Overhand Cut and Fill Underground Mine , Proc. of 9th Asian Rock Mechanics Symposium , CD-ROM, 2016.10.
212. Rizky Satria Putranto, Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Shuichi Fujita, Yoshihito Kanemasu, Experimental Study of Sodium Silicate Grouting Material: Characterization and Mechanical Performances , Proc. of 9th Asian Rock Mechanics Symposium , CD-ROM, 2016.10.
213. Takashi Sasaoka, PHANTHOUDETH Pongpanya, ULAANKHUU Batsaikhan, Hideki Shimada, TAKAMOTO Hiroshi, OYA Jiro, Study on support design for main roadway in new underground coal mine developed from open-cut highwall in Indonesia, Proceedings of 35th International Conference on Ground Control in Mining (China, 2016), 15-23, 2016.09, Indonesia is the second largest coal exporter to Japan, accounting for about 30 Mt annually. They produce over 400 Mt in 2015, over 99% of which is from open-cut mines. However, the conditions of surface mining are becoming worse year by year: the stripping ratio is increasing, approaching to the economic ratio and the infra-structure for coal transportation from inland mining areas is not prepared enough. To meet the demand for coal in Indonesia and the rest of the world, underground mines have to be developed. Under these conditions, our research program is being conducted to study the potential for underground coal mine in Indonesia through the roadway heading research program in which an underground coal mine is attempted to be developed from open pit highwall. The greatest challenge for underground coal mine development in Indonesia is safety of mine roadway in soft rock during heading, because the rock is weaker than other countries. There is a problem of possibility of heading below mobile unconsolidated soft sediment then heading move to deep area. It makes the problem of stability of support system occur due to the increase of ground pressure. The ground behavior of around roadway was measured by using Telltale, Extensometer and conver-gence measures. Moreover, the rock property tests were also conducted by using exploration drilling cores. Based on the geologi-cal data and monitoring data, a series of numerical analyses were conducted in order to discuss the appropriate support design of main roadway to 200m depth..
214. Sendy Dwiki, Hideki Shimada, Rudy Sayoga Guatama, Takashi Sasaoka, Ginting Jalu Kusuma, FUNDAMENTAL RESEARCH OF FLY ASH AND ORGANIC MATERIAL UTILIZATION AS　DRY COVER LAYER FOR ACID MINE DRAINAGE PREVENTION METHOD: COLUMN　LEACHING STUDY, International Journal of Applied and Natural Sciences , 5, 3, 121-132, 2016.05.
215. Shunta Oagata, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Ikuo Miyajima, STUDY ON EFFECTS OF THE COVER LAYER BY USING COAL ASH ON REVEGETATION IN INDONESIAN OPEN CUT COAL MINE, International Journal of Applied and Natural Sciences , 5, 3, 73-80, 2016.05.
216. Takashi Sasaoka, Tri Karian, Akihiro Hamanaka, Hideki Shimada, Matsui Kikuo, Masatomo Ichinose, Effect of Mine Water on the Stability of Underground Coal Mine Roadways, Geotechnical and Geological Engineering, 10.1007/s10706-016-9977-x, 34, 2, 671-678, 2016.04.
217. Takashi Sasaoka, Tri Karian, Akihiro Hamanaka, Hideki Shimada, Matsui Kikuo, Application of highwall mining system in weak geological condition, International Journal of Coal Science & Technology, 10.1007/s40789-016-0121-6, 2016.04.
218. Sendy Dwiki, Hideki Shimada, Rudy Sayoga Gautama, Rudy Sayoga Gautama, Takashi Sasaoka, Fatimah Koten, Shinji Matsumoto, Evaluation of Acid Mine Drainage Characterization for Predicting Post Drainage Water Quality in Coal Mines , Journal of the Polish Mineral Engineering Society , 36, 2, 23-28, 2016.03.
219. Shinji Matsumoto, Hirotaka Ishimatsu, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Ginting Jalu Kusuma, Prevention of Acid Mine Drainage (AMD) by Using Sulfur-bearing Rocks for a Cover Layer in a Dry Cover System in View of the Form of Sulfur , Journal of the Polish Mineral Engineering Society , 36, 2, 29-35, 2016.03.
220. Tri Karian, Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Deyu Qian, Budi Sulistianto, Countermeasure Method for Stope Instability in Crown Pillar Area of Cut and Fill Underground Mine , International Journal of Geoscience , http://www.scirp.org/journal/ijg http://dx.doi.org/10.4236/ijg.2016.73022 , 7, 280-300, 2016.03.
221. Shunta Ogata, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Ikuo Miyajima, Study on Effects of the Cover Layer by Using Coal Ash on Revegetation in Indonesian Open Cut Coal Mine , Proc. of Asian Conference on Engineering and Natural Science, 198-206, 2016.02.
222. Sendy Dwiki, Hideki Shimada, Rudy Sayoga Gautama, Takashi Sasaoka, Ginting Jalu Kusuma, Fundamental Research of Fly Ash and Organic Material Utilization as Dry Cover Layer for Acid Mine Drainage Prevention Method: Column Leaching Study, Proc. of Asian Conference on Engineering and Natural Science , 207-218, 2016.02.
223. Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Ginting Jalu Kusuma, Rudy Sayoga Gautama, Construction of Dry Cover System for Prevention of Acid Mine Drainage at Mine Waste Dump in Open Cast Coal Mine , Journal of Environmental Protecton , 7, 161-169, 2016.02.
224. Deyu Qian, Nong Zhang, Hideki Shimada, Cheng Wang, Takashi Sasaoka, Nianchao Zhang, Stability of Goaf-side Entry Driving in 800m Deep Island Longwall Coal Face in Underground Coal Mine , Arabian Journal of Geosciences , 10.1007/s12517-015-2119-6 , 9, 1, 1-28, 2016.01.
225. Yoshinori Miyamoto, Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Study on Construction of Waste Dump by Considering the Change of Physical Properties Associated with Acid Mine Drainage in Open Pit Coal Mines in Indonesia , Proc. of International Symposium on Earth Science and Technology 2015, 32-37, 2015.12.
226. Shinji Matsumoto, Shunta Ogata, Sendy Dwiki, Hideki Shimada, Takashi Sasaoka, Fundamental Research on Evaluation of Acid-topsoil for Effective Revegetation at Post-mining Land in Indonesian Open Cast Coal Mine , Proc. of International Symposium on Earth Science and Technology 2015 , 65-69, 2015.12.
227. Phanthoudeth Pongpanya, Hideki Shimada, Takashi Sasaoka, Deyu Qian, Water Inflow Associated with Ground Subsidence Caused by Undersea Coal Mining , Proc. of International Symposium on Earth Science and Technology 2015 , 166-169, 2015.12.
228. Ryota Yoshida, Hideki Shimada, Takashi Sasaoka, Toru Sato, Analytical Study on the Construction of Tunnels nearby Buildings by Pipe Roof Method , Proc. of International Symposium on Earth Science and Technology 2015, 170-175, 2015.12.
229. Seiichi Sakamoto, Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Shuichi Fujita, SUGENG WAHYUDI, Yasuhiro Yoshida, Keisuke Takahashi, New Development Covering Material Using Fly Ash for Construction of Seabed Structures, Proc. of International Symposium on Earth Science and Technology 2015 , 201-204, 2015.12.
230. Sendy Dwiki, Hideki Shimada, Rudy Sayoga Gautama, Takashi Sasaoka, Ginting Jalu Kusuma, SUGENG WAHYUDI, Study of Fly Ash and Organic Material Utilization as Cover Layer in the Dry Cover Method for AMD Prevention in the Coal Mine, Indonesia , Proc. of International Symposium on Earth Science and Technology 2015, 205-210, 2015.12.
231. Tri Karian, Takashi Sasaoka, SUGENG WAHYUDI, Hideki Shimada, Budi Sulistianto, Crown Pillar Characteristics in Cut and Fill Underground Mine , Proc. of International Symposium on Earth Science and Technology 2015 , 223-228, 2015.12.
232. Yoshiaki Takahashi, Takashi Sasaoka, SUGENG WAHYUDI, Hideki Shimada, Keisuke Takeuchi, Hiroaki Tanaka, Fundamental Study on Behavior of Flyrock in Open-pit Metal Mine , Proc. of International Symposium on Earth Science and Technology 2015 , 242-247, 2015.12.
233. Shunta Ogata, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Ikuo Miyajima, Study on Utilization of Coal Ash as Topsoil Substitutes for the Reclamation of Post-Mining Area in Open Cast Coal Mine in Indonesia , Proc. of International Symposium on Earth Science and Technology 2015, 272-277, 2015.12.
234. Hirotaka Ishimatsu, Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Fundamental Research of a New Classification of Potentially Acid Forming Aiming at the Prevention of Acid Mine Drainage in Open-pit Coal Mines in Indonesia , Proc. of International Symposium on Earth Science and Technology 2015 , 346-350, 2015.12.
235. Ulaankhuu Batsaikhan, Takashi Sasaoka, Hideki Shimada, Analysis of Stability and Dimensioning of Openings/Pillars with Highwall Mining System in Panian Pit of Semirara Coal Mine, Philippines , Proc. of International Symposium on Earth Science and Technology 2015, Special Issue of the Joint Program of Sustainable Resources Engineering, JPSRE , 5-10, 2015.12.
236. Naung Naung, Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Fumihiko Matsumoto, Tomo Morita, Fundamental Study on the Behavior of Ground Subsidence by Using Rectangular Pipe Jacking Method , Proc. of International Symposium on Earth Science and Technology 2015, Special Issue of the Joint Program of Sustainable Resources Engineering, JPSRE , 17-20, 2015.12.
237. Takashi Sasaoka, Yoshiaki Takahashi, Hirokuni Inoue, Hideki Shimada, Hiroaki Tanaka, Keisuke Takeuchi, Field Experiments on Flight Behavior of Fragmented Rocks and Control Measure of Fly Rock, Proc. of the 23rd International Symposium on Mine Planning and Equipment Selection, 229-239, 2015.11.
238. Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Yasuhiro Yoshida, Shuichi Fujita, Material for Construction of Seabed Structures Using Fly Ash - Surfactant Mixtures , Proc. of the 23rd International Symposium on Mine Planning and Equipment Selection, 955-964, 2015.11.
239. Kento Fukui, Yoshiaki Takahashi, Takashi Sasaoka, SUGENG WAHYUDI, Hideki Shimada, Shiro Kubota, Study on Control of Rock Fragmentation at Limestone Quarries , Proc. of the 8th International Conference on Explosives and Blasting Techniques , 14-19, 2015.11.
240. Yoshiaki Takahashi, Tei Saburi, Takashi Sasaoka, SUGENG WAHYUDI, Hideki Shimada, Yuji Ogata, Fundamental Study on an Effect of High Precision Detonation on Fracture Mechanism , Proc. of the 8th International Conference on Explosives and Blasting Techniques, 20-27, 2015.11.
241. Zhiyi Zhang, Hideki Shimada, Deyu Qian, Takashi Sasaoka, Application of the Retained Gob-side Gateroad in a Deep Underground Coal Mine , International Journal of Mining, Reclamation and Environment , 2015.11.
242. Deyu Qian, Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Stability of Roadway in Upper Seam of Deep Multiple Rich Gas Coal Seams through Ascending Stress-relief Mining , Memoirs of the Faculty of Engineering, Kyushu University , 75, 2, 59-80, 2015.11.
243. SUGENG WAHYUDI, Hideki Shimada, Takashi Sasaoka, Shuichi Fujita, Takashi Senda, Analytical Study of Backfilling Injection into Over-cutting Area of Deep Pipe Jacking to Improve Surrounding Soil , Proc. of 4th Annual International Conference on Geological and Earth Science , 23-26, 2015.10.
244. Shunta Ogata, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Ikuo Miyajima, Applicability of Coal Ash for the Revegetation of Post-mining Land in Indonesian Open Cut Coal Mine , Proc. of the 14th Conference on Science and Technology on Earth Resources and Petroleum , CD-ROM, 2015.10.
245. Hirotaka Ishimatsu, Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Fundamental Study on Application of Potentially Acid Forming for a Cover Layer in Open Pit Coal Mine in Indonesia , Proc. of the 14th Conference on Science and Technology on Earth Resources and Petroleum , CD-ROM, 2015.10.
246. Donghua Zhang, Takashi Sasaoka, SUGENG WAHYUDI, Hideki Shimada, Formation Mechanism of Benches on Stability of Dumping Area , Proc. of 34th International Conference on Ground Control in Mining (China 2015), Jiazuo CHINA , 215-229, 2015.10.
247. Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Study on Method for Minimizing Soil Erosion in Open-cut Mines in Tropical Regions, Proc. of 34th International Conference on Ground Control in Mining (China 2015), Jiazuo CHINA , 230-236, 2015.10.
248. Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Naung Naung, Toru Sato, Application of Pipe Roof by Using Pipe Jacking under Different Design on Behavior of Ground Surface after
Tunnel Construction , Proc. of International NO-DIG 2015 33rd Internatinal Conference and Exhibition , USB-Memory, 2015.09.
249. Fumihiko Matsumoto, Tomo Morita, Eiji Sakai, Takashi Sasaoka, Hideki Shimada, Pipe Jacking Method in Connecting New Pipeline to the Existing Underground Structure Including Right Angle
Curve Route , Proc. of International NO-DIG 2015 33rd International Conference and Exhibition , USB-Memory, 2015.09.
250. Sendy Dwiki, Hideki Shimada, Rudy Sayoga Gautama, Ginting Jalu Kusuma, Takashi Sasaoka, Fatima Koten, Evaluation of Acid Mine Drainage Characterization for Prediction Post Drainage Water Quality in Coal Mines , Proceedings of 19th Conference on Environment and Mineral Processing, Part 1, 53-60, 2015.06.
251. Akihiro Hamanaka, Hideki Shimada, Sunta Ogata, Takashi Sasaoka, Ikuo Miyajima, Utilization of Coal Ash For Preparation of Seedbed in Disturbed Land in Indonesian Open Cut Coal Mine , Proceedings of 19th Conference on Environment and Mineral Processing , Part 1, 103-110, 2015.06.
252. Hideki Shimada, Takashi Sasaoka, Shuichi Fujita, Yasuhiro Yoshida, Construction of Seabed Structure by New Development Covering Material Using Fly Ash , Proceedings of 19th Conference on Environment and Mineral Processing, Part 1, 189-196, 2015.06.
253. Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Ginting Jalu Kusuma, The Use of Sulfur-bearing Rocks for The Cover Layer to Prevent Acid Mine Drainage (AMD) in the Cover System: Characterization of Rocks , Proceedings of 19th Conference on Environment and Mineral Processing, Part 1, 221-226, 2015.06.
254. Akihiro　Hamanaka, Naoya　Inoue, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Ikuo Miyajima, Design of Self-sustainable Land Surface Against Soil Erosion at Rehabilitation Areas in Open-cut Mines in Tropical Areas, 29, 4, 305-315, 2015.06.
255. Takashi Sasaoka, Akihiro Hamanaka, SUGENG WAHYUDI, Shuichi Fujita, Yasuhiro Yoshida, Hideki Shimada, Construction of Seabed Structures by New Development Covering Material Using Fly Ash , Journal of Development and Applications of Oceanic Engineering , 10.14355/daoe.2015.04.001 , 4, 1-9, 2015.06.
256. Takashi Sasaoka, Akihiro Hamanaka, SUGENG WAHYUDI, Hideki Shimada, Vladimir Kebo, Numerical Study on Effect of Rock Mass Stability on Deep Deposit Slicing at Uranium Mine in Czech Republic , Electrical Journal of Geotechnical Engineering , 20, 12, 4379-4386, 2015.06.
257. Takashi Sasaoka, SUGENG WAHYUDI, Hideki Shimada, Utilization of Coal Ash as a Barrier Material for Radioactive Waste Disposal , Journal of Geoscience and Environment Protection , 10.4236/gep.2015.34005 , 3, 3, 31-43, 2015.06.
258. Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Ginting J. Kusuma, Rudy S. Gautama, The Key Factors of the improvement of classification Method of Waste Rocks Aimed at the Prevention of Acid Mine Drainage, Proceedings of 5th International Symposium on Mineral Resources and Mine Development, 325-334, 2015.05.
259. Takashi Sasaoka, Akihiro Hamanaka, Shizuo Ikuta, Hideki Shimada, Matsui Kikuo, Geotechnical and Hydrogeological Issues for Development of Underground Coal Mine from Open Pit Highwall in Seashore Region, Proceedings of 5th International Symposium on Mineral Resources and Mine Development, 473-486, 2015.05.
260. Takashi Sasaoka, Akihiro Hamanaka, Shizuo Ikuta, Hideki Shimada, Matsui Kikuo, Geotechnical and Hydrogeological Issues for Development of Underground Coal Mine from Open Pit Highwall in Seashore Region, Proceedings of 5th International Symposium on Mineral Resources and Mine Development, 473-486, 2015.05.
261. Takashi Sasaoka, Yoshiaki Takahashi, SUGENG WAHYUDI, Akihiro Hamanaka, Hideki Shimada, Matsui Kikuo, Shiro Kubota, Effects of Rock Mass Conditions and Blasting Standard on Fragmentation Size at Limestone Quarries, Open Journal of Geology, 10.4236/ojg.2015.55030, 5, 5, 331-339, 2015.05, The size distribution of fragmented rocks depends on not only the blasting standard but also the mechanical properties, joint system and crack density of rock mass. As, especially, the cracks in the rock mass are heavily developed at the limestone quarries in Japan, the joints and/or cracks in the rock mass have big impacts on the blasting effects such as the size of fragmented rocks. Therefore, if the joint system and/or crack density in the rock mass can be known and evaluated in quantity, the blasting operation can be done more effectively, efficiency and safety. However, the guideline for designing the appropriate blasting standard based on the rock mass condition such as mechanical properties, joint system and/or distribution of cracks, discontinuities, from the scientific point of view, has not been developed yet. Therefore, a series of blasting tests had been conducted in different mines and faces, geological conditions and blasting standards in order to know the impacts of each factor on the blasting effects. This paper summarizes the results of blasting tests and describes the impacts of rock mass conditions and blasting standard on the size of fragmented rocks..
262. Takashi Sasaoka, Hiroshi Takamoto, Hideki Shimada, Jiro Oya, Akihiro Hamanaka, Matsui Kikuo, Surface subsidence due to underground mining operation under weak geological condition in Indonesia, Journal of Rock Mechanics and Geotechnical Engineerig, 10.1016/J.jrmge.2015.01.007, 2015.04.
263. Takashi Sasaoka, Tri Karian, Akihiro Hamanaka, Hideki Shimada, Matsui Kikuo, Study on Improvement of Dumping Site Stability in Weak Geological Condition by Using Compacted Layer, Open Journal of Geology, 5, 3, 144-155, 2015.03.
264. Takashi Sasaoka, Hideki Shimada, Akihiro Hamanaka, Budi Sulistianto, Masatomo Ichinose, Matsui Kikuo, Geotechnical Issues on Application of Highwall Mining System in Indonesia , Proc. of VIETROCK 2015 International Symposium , 435-444, 2015.03.
265. Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Matsui Kikuo, Ginting Jalu Kusuma, Rudy Sayoga Gautama, Fundamental Study of Effect of Waste Rock Condition on Control of Acid Mine Drainage at Open Pit Coal Mine in Tropical Regions , Proc. of VIETROCK 2015 International Symposium , 427-434, 2015.03.
266. Akihiro Hamanaka, Naoya Inoue, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, An Evaluation on Mixture Materials Using Overburden and Flyash as Cover Layer for Acid Mine Drainage Prevention and Underlying Materials of Seedbed in Indonesian Coal Mine, Research Journal of Environmental and Earth Science, 6, 10, 486-492, 2015.02.
267. Naoya Inoue, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Fundamental Study on Assessment of Soil Erosion by the USLE Method at Rehabilitation Area in Indonesian Coal Mine , Earth Science Research , 10.5539/esr.v4n1p61 , 4, 1, 61-67, 2015.01.
268. Kento Fukui, Takashi Sasaoka, SUGENG WAHYUDI, Hideki Shimada, Matsui Kikuo, Study on Distribution of Rock Fragmentation after Blasting and Development of Its Prediction Method , Proc. of International Symposium on Earth Science and Technology 2014 , 371-372, 2014.12.
269. Kohei Tsujimoto, Purwanto, SUGENG WAHYUDI, Hideki Shimada, Takashi Sasaoka, Ridho Kresna Wattimena, Tri Karian, Evaluation of Tangential Stress at Sidewall after Cut and Fill Excavation at Underground Gold Mine , Proc. of International Symposium on Earth Science and Technology 2014 , 369-370, 2014.12.
270. Tri Karian, Hideki Shimada, Budi Sulistianto, Takashi Sasaoka, Pandu Winarno, SUGENG WAHYUDI, Mohammad Johannes Djuharlan, Matsui Kikuo, Indirect In-situ Stress Determination from Tunnel Deformation Monitoring , Proc. of International Symposium on Earth Science and Technology 2014 , 312-315, 2014.12.
271. Hirokuni Inoue, Takashi Sasaoka, Hideki Shimada, Akihiro Hamanaka, Matsui Kikuo, Hiroaki Tanaka, Masashi Inoue, Study on Control of Fragmentation Size by Changing Blasting Pattern at Open Pit Metal Mine , Proc. of International Symposium on Earth Science and Technology 2014 , 214-217, 2014.12.
272. Yoshiaki Takahashi, Kento Fukui, Takashi Sasaoka, Akihiro Hamanaka, Hideki Shimada, Matsui Kikuo, Shiro Kubota, Tei Saburi, Numerical Study on Effects of Constructing Trench and Reducing Charge Weight on Blast Vibration in Metal Mine , Proc. of International Symposium on Earth Science and Technology 2014 , 204-208, 2014.12.
273. Ronald Widjojo, Ganda Marihot Simangunsong, Ridho Kresna Wattimena, SUGENG WAHYUDI, Takashi Sasaoka, Hideki Shimada, Creating a Software to Determine the Underground Blasting Geometry Design , Proc. of International Symposium on Earth Science and Technology 2014 , 198-203, 2014.12.
274. Akihiro Hamanaka, Naoya Inoue, Hideki Shimada, Takashi Sasaoka, Ikuo Miyajima, Matsui Kikuo, Assessment of Soil Erosion at Rehabilitation Area in Tropical Regions Based on Laboratory Experiment , Proc. of International Symposium on Earth Science and Technology 2014 , 175-180, 2014.12.
275. Naoya Inoue, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Applicability of Fly Ash as a Topsoil Substitute for the Reclamation of Post Mine Area in Indonesian Coal Mine , Proc. of International Symposium on Earth Science and Technology 2014 , 114-118, 2014.12.
276. Shinji Matsumoto, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Management of a Large Amount of Potentially Acid Forming for the Prevention of Acid Mine Drainage , Proc. of International Symposium on Earth Science and Technology 2014 , 93-98, 2014.12.
277. Sendy Dwiki, Hideki Shimada, Takashi Sasaoka, Imam Fadll, Rudy Sayoga Gautama, Ginting Jalu Kusuma, Fatimah Koten, Mine Void Management Study: Water Quality Assessment of Post Closure in Coal Mining by Using Forward and Inverse Modelling , Proc. of International Symposium on Earth Science and Technology 2014 , 83-88, 978-4-9902356-3-5 , 2014.12.
278. Deyu Qian, Takashi Sasaoka, Hideki Shimada, Amarsailhan Tsedendorj, Matsui Kikuo, Application of Goaf-side Roadway Retained with Multiple Segments in Deep Underground Coal Mine , Proc. of International Symposium on Earth Science and Technology 2014 , 72-77, 2014.12.
279. Kento Fukui, Hirokuni Inoue, Takashi Sasaoka, Hideki Shimada, Akihiro Hamanaka, Matsui Kikuo, Shiro Kubota, Tei Saburi, Study on Control Measures for Blast-induced Ground Vibration in Open Pit Metal Mine by Means of Numerical Analysis , Proc. of 4th Asia-Pacific Symposium on Blasting Techniques, Shenzhen CHINA , 516-521, 2014.11.
280. Hiroshi Takamoto, Takashi Sasaoka, Hideki Shimada, Jiro Oya, Akihiro Hamanaka, Matsui Kikuo, Study on Surface Subsidence due to Longwall Mining Operation under Weak Geological Condition in Indonesia , Proc. of 33rd International Conference on Ground Control in Mining (China) , 168-173, 2014.10.
281. Akihiro Hamanaka, Amarsailhan Tsedendorj, Naoya Inoue, Takashi Sasaoka, Hideki Shimada, Matsui Kikuo, Current Geotechnical Issues in Open Cut Mining in Desert Area in Mongolia , Proc. of 33rd International Conference on Ground Control in Mining (China), 156-160, 2014.10.
282. Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Akihiro Hamanaka, Matsui Kikuo, Evaluation of the Current System for Waste Rock Treatment Considering the Rock Conditions in Open Pit Coal Mine, Indonesia , Proc. of the Beijing International Symposium Land Reclamation and Ecological Restoration, Beijing CHINA , 551-555, 2014.10.
283. Donghua Zhang, Naoya Inoue, Akihiro Hamanaka, Takashi Sasaoka, Hideki Shimada, Matsui Kikuo, Stability of Water Content on Dominant Loess Dumping Areas , Proc. of the Beijing International Symposium Land Reclamation and Ecological Restoration, Beijing CHINA , 541-549, 2014.10.
284. Naoya Inoue, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Fundamental Study on Application of Fly Ash as Topsoil Substitute for the Reclamation of Mined Land in Indonesian Open Cut Coal Mine , Proc. of the Beijing International Symposium Land Reclamation and Ecological Restoration, Beijing CHINA , 535-540, 2014.10.
285. Akihiro Hamanaka, Naoya Inoue, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, An Experimental Study for Assessment of Soil Erosion at Rehabilitation Area in Indonesian Coal Mine , Proc. of the Beijing International Symposium Land Reclamation and Ecological Restoration, Beijing CHINA , 171-175, 2014.10.
286. Qing Yu, Jinrong Ma, Hideki Shimada, Takashi Sasaoka, Influence of Aquifer Drainage on Land Subsidence in Eastern Chinese Coal Mines , Proc. of the Beijing International Symposium Land Reclamation and Ecological Restoration, Beijing CHINA , 131-136, 2014.10.
287. Fumihiko Matsumoto, Tomo Morita, Eiji Sakai, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, New Pipe-jacking Method in Connecting New Pipeline to the Existing Underground Structure , Proc. of International NO-DIG 2014 32nd Internatinal Conference and Exhibition, Madrid SPAIN , CD-ROM , 2014.10.
288. Hideki Shimada, Takashi Senda, Takashi Sasaoka, Shuichi Fujita, SUGENG WAHYUDI, Akihiro Hamanaka, Matsui Kikuo, Dai Watanabe, Analytical Study on Soil Behavior and Its Countermeasures Using a Pipe Jacking Method in Deep Strata , Proc. of International NO-DIG 2014 32nd Internatinal Conference and Exhibition, Madrid SPAIN , 2014.10.
289. Tri Karian, Suseno Kramadibrata, Budi Sulistianto, Hideki Shimada, Takashi Sasaoka, SUGENG WAHYUDI, Matsui Kikuo, Surface Subsidence Prediction of longwall Underground Coal Mining Prototype by Using Numerical and Empirical Method , Proc. of 2014 ISRM International Symposium and 8th Asian Rock Mechanics Symposium, Sapporo JAPAN , CD-ROM, 2014.10.
290. Deyu Qian, Takashi Sasaoka, Hideki Shimada, SUGENG WAHYUDI, Amarsailhan Tsedendorj, Cheng WANG, Matsui Kikuo, Analysis Coal Pillar Width and Stability Control of Gob-side Entry Driving in Deep Island Coal Face , Proc. of 2014 ISRM International Symposium and 8th Asian Rock Mechanics Symposium, Sapporo JAPAN , CD-ROM, 2014.10.
291. SUGENG WAHYUDI, Hideki Shimada, Ganda Marihot Simangunsong, Takashi Sasaoka, Matsui Kikuo, Fundamental Study on Directional Directional Characters of Site-specific k and b of PPV Prediction Model , Proc. of 2014 ISRM International Symposium and 8th Asian Rock Mechanics Symposium, Sapporo JAPAN , CD-ROM , 2014.10.
292. Qing Yu, Jinrong Ma, Hideki Shimada, Takashi Sasaoka, Influence of Coal Extraction Operation on Shaft Lining Stability in Eastern Chinese Coal Mines , Journal of Geotechnical and Geological Engineering , 10.1007/s10706-014-9760-9 , 32, 821-827, 2014.08, In order to find the relationship between the shaft lining stability and the coal extraction operation, a 3D numerical model of strata layers and shaft lining was established for simulating the influence of coal extraction operation on shaft lining. Certain factors including mining depth, safety pillar width, mining width and mining height were taken as the influence factors in the simulation. The results indicated that the coal extraction could lead to the initiation of the failure in the aquifer and rock layers. As the mining depth increases, the shear strain increment in aquifer becomes small. In this case, the distance between mining panel and aquifer should be larger than 220 m and the safety pillar width should not less than 70 m. The maximum principal stress in aquifer had a little relation to mining operations. The mining panel width should not exceed 50 m without any support. .
293. Numerical Study on Deformation Behavior of Tail-Void on Deep Pipe-jacking Operation

Nana Yuda, Hideki Shimada, Takashi Sasaoka, Kikuo Matsui, Takashi Senda, Masatomo Ichinose .
294. Numerical Study on the Effect of Vibration Proof Wall and Control of Explosive on Blast Vibration in Open Cut Mine

Kento Fukui, Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Masatomo Ichinose, Shiro Kubota, Tei Saburi.
295. Hideki Shimada, Sri Maryati, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, Soil Erodibility Characteristics of Reclamation Area - Case Study in Indonesian Coal Mining, Journal of Civil Engineering and Architecture, 8, 7, 2014.07, Soil erosion is one of the most important problems in Indonesia coal mining reclamation area because located in tropical areas which has high average of rainfall. Severe soil erosion leads to the unsuccessful reclamation progress in the post mine surface due to impact on steep slope and limit of seedling establishment. Considering the impact of soil erosion in mining activities, Indonesian government had issued several regulations related to erosion control. Soil erodibility is one of the main factors controlling soil erosion. It will determine amount of soil loss and total sediment. Estimation of soil erodibility aims to determine the susceptibility of soil to be eroded by water. The estimation considers soil texture, percentage of organic matter, soil structure and soil permeability. This study was integration between field work to collect soil sample, soil laboratory analysis, soil erodibility analysis using erodibility equation Wischmeier and Smith (1978) and analysis to predict soil erosion/ annual total soil loss. The results show that soil erodibility in study area was calculated to range from 0.091 to 0.142 tons ha h/ha/MJ/mm and soil erodibility of the study area was categorized as very low and low. There are strong relationships between soil erodibility and soil erosion but the correlation was not fully linier due to other factors controlling soil erosion / annual total soil loss..
296. Takashi Sasaoka, Hideki Shimada, Nay Zar Lin, Hiroshi Takamoto, Matsui Kikuo, Suseno Kramadibrata, Budi Sulistianto, Geotechnical issues in the application of rock bolting technology for the development of underground coal mines in Indonesia, International Journal of Mining, Reclamation and Environment, 10.1080/17480930.2013.804258, 28, 3, 150-172, 2014.06, The application of a rock bolting system for Indonesian underground coal mines has been attempted for a long time, but they has not been successful yet. Recently, two new underground mining trials have been conducted in East Kalimantan, Indonesia in order to investigate the possibility of the technical challenges of underground coal mines under weak geological conditions, especially the application and management of a rock bolting system. Unfortunately, one of them failed and was given up due to a fatal roof fall accident. However, in another trial, even though roof falls have occurred within the working area, the bolted roadways showed reasonable stability over time. Moreover, a comprehensive monitoring system has been installed in order to monitor the ground behaviour and its characteristics. This application of a comprehensive monitoring system has enhanced the ability to increase the level of support and to react to changing/deteriorating conditions.
This paper describes the conditions and geotechnical issues for underground mines in Indonesia and discusses the applicability of the rock bolting system under a weak strata condition in Indonesia and its technical tasks by means of site investigations and numerical analysis from the results of two underground mine trials.
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297. Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Challenges in Acidic Water Control by Considering the Effects of Waste Rock Condition, Proc. of Aachen International Mining Symposium -Sixth International Symposium on High Performance Mining-, pp.427-436, 2014.06, Acid Mine Drainage (AMD) problem is considered as one of the serious problems in mining operation in the world. This problem is generated due to sulfide minerals in waste rocks. Sulfide minerals are very commonly included in any types of crustal rocks, resulting in AMD and a negative impact on the ecosystem. In this research, some experiments were conducted with the rocks sampled in the open pit coal mine in Indonesia to understand the effects of the rock condition on acidic water generation. The result indicated that wetting and drying process affected the disintegration of rocks caused by both physical and chemical factors in the rock sample. Hence, AMD generation is promoted due to both factors while waste rocks are stored in tailings in the current system. It suggests that the system for waste rock management should be improved to prevent AMD generation..
298. Takashi Sasaoka, Akihiro Hamanaka, Hideki Shimada, Matsui Kikuo, Nay Zar Lin, Budi Slistianto, Punch Multi-slice Mining System for Thick Coal Seam Under Weak Geological Conditions, Proc. of Aachen International Mining Symposium -Sixth International Symposium on High Performance Mining-, pp.273-286, 2014.06, Most of coal is produced from open-cut mines in Southeast Asian countries. However, the conditions of their surface mines are worsening each year: the stripping ratio is increasing, approaching economic ratio and the regulation of environmental protection. To meet the demand for coal, underground mines have to be developed in the near future. Under these circumstances, the development of new coal mines from open-cut highwalls are being planned in Southeast Asian countries. Moreover, some of the Southeast Asian mines have thick coal seams. However, if the conventional mining systems and designs introduced in US, Australia and European countries are applied, several geotechnical issues can be expected due to the mines’ weak geological conditions. From these backgrounds, this paper proposed a punch multi-slice mining system with stowing for thick coal seam under weak geoligical conditions and discussed its applicability and suitable design by means of numerical analysis..
299. Hideki Shimada, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, Toru Sato, Effect of Application of Pipe Roof Method by Using Pipe Jacking on Behavior of Surrounding Soil, Journal of Physical Science and Application , 3, 6, 2014.06, Tunnels in an urban area, in many cases, are constructed in soft ground which contains underground water, near existing facilities and structures. Structural stability for the tunnel and also the nearby structures and facilities is vital in this kind of work. Slurry pipe jacking was firmly established as a special method for the non-disruptive construction of underground pipelines of sewage systems. This method utilizes mud slurry that is formed around the pipes in order to stabilize the surrounding soil. In the pipe roof method the tubing elements that are constructed by slurry pipe jacking are near each other longitudinally, and create a rigid and stable lining before the excavation of the main tunnel. This paper discusses the application of a slurry pipe jacking system on the pipe roof method by means of numerical analysis. Because of the rigid behavior of the lining, the results show little subsidence, making this method a reliable method of constructing large tunnels with small cover in an urban area. .
300. Naoya Inoue, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Effective Assessment Methods of Soil Erosion Control in Indonesian Open Pit Mine, Proc. of 18th Conference on Environment and Mineral Processing, 2014.05.
301. Shogo Kato, Yoshiaki Sakai, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Study on Application of Soil Conditioner Made from Dewatered Sludge to Revegetation Aggregate Mining Site, Proc. of 18th Conference on Environment and Mineral Processing, 2014.05.
302. Akihiro Hamanaka, Naoya Inoue, Shinji Matsumoto, Hideki Shimada, Matsui Kikuo, Takashi Sasaoka, Ikuo Miyajima, Revegetation for Utilization of Disturbed Land by Paper Mulberry in Indonesian Open Cut Mine, Proc. of 18th Conference on Environment and Mineral Processing, 2014.05.
303. Hideki Shimada, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, Behavior of Grouting Material for Floor Reinforcement Technique in Underground Mines, International Journal of Mining, Reclamation and Environment, 28, 2, 2014.04, In underground coal mines, floor heave is a major problem that is caused by groundwater, high strata stress and weak floors. Controlling the stability of the roadways is the key to maintaining the safety and efficiency of underground mining. Appropriate cement grouting is an effective and attractive floor reinforcement technique that can control excessive floor heave and closure. The cement grouting also reduces the permeability of the rock mass and consequently controls the movement of groundwater into the roadway. Injecting cement grout into roadway floors provides a more uniform reinforcement throughout the floor. It may even be possible to reinforce an extremely fractured floor. In this respect, this technique is superior to floor bolting/doweling. This technique may be performed either as a pre- or post- development reinforcement. It is very difficult, however, to reinforce a floor that is not heavily fractured by the injection technique. Therefore, before floor injection, floor blasting is performed in order to create an adequate number of fractures in the floor. Fracturing by blasting also relieves and improves stress conditions in the floor. From this point of view, the behavior of grouting injection for floor reinforcement technique is discussed. .
304. Purwanto, SUGENG WAHYUDI, Hideki Shimada, Takashi Sasaoka, Ridho Kresna Wattimena, Matsui Kikuo, Support Design of Underground Cut and Fill Mine by Using Hybrid Numerical Empirical Model, Journal of Current Advances in Civil Engineering, 3, 2, 2014.04.
305. Hideki Shimada, Yasuhiro Yoshida, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, By-functional Material of Lubrication and Backfilling for Pipe Jacking, Journal of Current Advances in Civil Engineering, 2, 2, 2014.04, In Japan, pipe jacking has been firmly established as a special method for the construction of underground pipelines.

Recent technological developments have produced successful methods for the stabilization of unstable strata by employing lubricant around the pipes. The contraction of the lubricant volume after injection into the over-cutting area needs to be reduced for slurry pipe jacking. Moreover, pressurized lubricant functions as an important support in the mitigation of overburden pressure. Therefore most of the underground deformations caused by the pipe jacking construction may be caused by changing stress and strain conditions over the course of construction. Moreover, lubrication can effectively reduce the needed thrust if a discrete layer of lubricant is maintained between the pipe and the excavated soil. The lower frictional force that lubrication enables allows larger jacking lengths to be achieved. That is why the discussion of appropriate lubricants and injection methods, etc. in preparation for such changes is inevitable. From this point of view, the new backfilling material can be developed for several kinds of soil conditions..
306. Donghua Zhang, Naoya Inoue, Takashi Sasaoka, Hideki Shimada, Akihiro Hamanaka, Matsui Kikuo, Study on Formation Mechanism of Dumping Piles on Dumping Area Stability, Open Journal of Geology, 4, 4, 2014.04, Dumping areas represent a stable hazard. To clarify the formation mechanism of dumping piles on

dumping area stability, an investigation in open pit mine was performed. Moreover, experiments

with gravel were conducted based on the research site conditions. The geological conditions,

dumping operation, and waste particle size distribution were investigated in the Heidaigou open

pit mine. Particle size distribution, dumping height, dumping volume, and floor inclination were

varied to examine their effects on a single pile formation. The design of blasting can be modified to

make the particle size of waste smaller. The volume of the bucket does not have a pronounced effect

on dumping pile repose angle, capacity of dumping pile, and dumping area stability. The smaller

the floor inclination, the better it is. Two measures are proposed to increase the kinetic force of

friction between waste material and floor surface. The interval distance, dumping volume and

dumping height were also varied to examine the interaction between the formations of multiple piles. The dumping width should be decided through optimization efficiency of bulldozer and dumping device in bucket wheel excavator-belt-stacker dumping operation and dragline dumping operation. Moreover, the volume of the bucket does not have a pronounced interaction effect. In the dumping operation, the work amount of bulldozer decreases as dumping pile increases. The design of the dumping operation..
307. Mingwei Zhang, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Linming Dou, Evolution and Effect of the Stress Concentration and Rock Failure in the Deep Multi-seam Coal Mining, Journal of Environmental Earth Science, 2014.01.
308. Mingwei Zhang, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Linming Dou, Seismic Energy Distribution and Hazard Assessment in Underground Coal Mines Using Statistical Energy Analysis, International Journal of Rock Mechanics and Mining Science, 64, 1, 2014.01, This study proposes a method for hazard assessment in mines based on seismic energy distribution.

To minimize the influence of external factors on conventional methods, a long-term large-scale seismicity observation was carried out in nine underground coal mines in China. A significant amount of data from seismic events were obtained and used as the statistical sample. For ease of analysis, the seismic energy was formatted by uniform criteria. A distribution-free hypothesis test was applied to determine the probable pattern of the seismic sample. The probability distribution of seismic datasets, the energy characteristics of abnormal seismic events and their commonality with rock burst were discussed. Hazardous seismic outliers were identified based upon the statistical rule. Finally, the seismic energy gradient was determined, and the weighted energy eigenvalue was created to balance the hazard assessment. Our main findings show that the randomization of seismic events is restrained. Seismic energy distribution is abnormal and inconsistent with other common distribution types. Both the anomalous critical values used for identifying the seismic outliers and the weighted energy eigenvalue of a continually increasing energy gradient played a positive role in evaluating its hazard level. The new assessment method has been shown in this study to be objective and effective..
309. The Current Situation and Consideration to Prevent Acid Mine Drainage at Dumping Site in Indonesian Coal Mine

Journal of MMIJ, Vol.130, No.1, pp.9-15, January 2014

Akihiro HAMANAKA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Masatomo ICHINOSE

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310. Purwanto, Hideki Shimada, Takashi Sasaoka, Ridho Kresna Wattimena, Matsui Kikuo, Influence of Stope Design on Stability of Hanging Wall Dicline in Cibaliung Underground Gold Mine

, International Journal of Geoscience, 4, 1-8, 2013.12, Cibaliung Underground Gold Mine applies cut and fill mining method to optimize ore production and maintain under-ground stability. Existing 5 m × 5 m height and width of stope geometry has a potential new design to increase produc-tion of gold due to variety of thick ore, however serious shotcrete failures often occur in hanging wall decline. This pa-per aims to find out the relationship between stope design and stability of hanging wall decline. The analysis conducted in this study is based on underground characteristics and geological condition of Cibaliung area. The impact of stope design on decline stability was analyzed by using numerical methods. The impact factors such as different rock mass, size of stope, and distance between stope and hanging wall decline were used in the analysis of underground stability especially stability on hanging wall decline..
311. Mingwei Zhang, Takashi Sasaoka, Hideki Shimada, Matsui Kikuo, Comparison of Optimal Basis Function for the Underground Microseismic Wave Processing in Wavelet Packet Transform, Memoirs of the Faculty of Engineering, 73, 3, 71-85, 2013.12, To improve the accuracy of signal analysis and processing for the underground microseismic waves, an optimal basis function is indispensable in the wavelet packet transform (WPT). Based upon the microseismic wave groups monitored in a deep coal mine, wavelet bases in the Daubechies, Symlets and Coiflets families were screened, and the optimal wavelet packet basis was strictly determined by its reconstruction capability on the original wave and its conservation capability on its characteristic components. Signal reconstruction and conservation capabilities were evaluated by two parameters, root mean square error and correlation coefficient. The energy reserving capability of the optimal basis function was finally discussed to verify its superiority. The results turn out that the wavelet bases db1, sym4, sym5 and sym8 are more appropriate for the microseismic wave compared to others as their better signal reconstruction capability. Among them, basis sym5 is the optimal wavelet basis function for the microseismic wave. When processed by the wavelet basis sym5, the maximum energy components of waves are effectively reserved and the reconstructed characteristic components have the highest relevancy with that of the original wave..
312. Hideki Shimada, Yasuhiro Yoshida, Takashi Senda, Yasutaka Maeda, Takashi Sasaoka, Shuichi Fujita, Matsui Kikuo, Development of Backfilling Material Using Fly Ash by Application of Chemical Injection, Journal of the Polish Mineral Engineering Society, 32, 2, 37-42, 2013.12.
313. Hideki Shimada, Yasuhiro Yoshida, Takashi Senda, Yasutaka Maeda, Takashi Sasaoka, Shuichi Fujita, Matsui Kikuo, Development of Backfilling Material Using Fly Ash by Application of Chemical Injection, Journal of the Polish Mineral Engineering Society, 32, 2, 37-42, 2013.12.
314. Hideki Shimada, Yasuhiro Yoshida, Takashi Senda, Yasutaka Maeda, Takashi Sasaoka, Shuichi Fujita, Matsui Kikuo, Development of Backfilling Material Using Fly Ash by Application of Chemical Injection, Journal of the Polish Mineral Engineering Society, 32, 2, 37-42, 2013.12.
315. Akihiro Hamanaka, Naoya Inoue, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Ikuo Miyajima, Several Considerations on Soil Erosion at the Rehabilitation Area in Indonesian Coal Mine, Proc. of International Symposium on Earth Science and Technology 2013, 347-351, 2013.12, Indonesia produces over 350Mt of clean coal in 2012 and is the second largest coal exporter to Japan, accounting for 30 Mt/y. Almost of the coal produced is from open cut mines. Mining operation of open cut mines gives serious impacts on surrounding environment. Therefore, an appropriate rehabilitation program has to be taken into consideration when the mine plan is designed.

Indonesia belongs to tropical rainforest climate and the average annual rainfall shows 2,000~4,000mm/year. One of major environmental problem occurred in rehabilitation area is soil erosion due to heavy rainfall. Soil erosion is easy to accelerate under the high rainfall level, especially in sharp cloudbursts such as squall.

From series of investigation and discussion, the soil spread to rehabilitation area shows different soil composition due to mixing overburden during soil stripping and stockpiling process. Moreover, it can be expected that this condition could be critical factor for the risk of soil erosion. Therefore, adequate rehabilitation process to limit soil erosion has to be considered such as establishment of erosion control structures and rapid growing cover crop species.

This paper describes the current situations in rehabilitation area at one of open cut coal mine in Indonesia and several considerations on soil erosion.

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316. Akihiro Hamanaka, Naoya Inoue, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Ikuo Miyajima, Several Considerations on Soil Erosion at the Rehabilitation Area in Indonesian Coal Mine, Proc. of International Symposium on Earth Science and Technology 2013, 347-351, 2013.12, Indonesia produces over 350Mt of clean coal in 2012 and is the second largest coal exporter to Japan, accounting for 30 Mt/y. Almost of the coal produced is from open cut mines. Mining operation of open cut mines gives serious impacts on surrounding environment. Therefore, an appropriate rehabilitation program has to be taken into consideration when the mine plan is designed.

Indonesia belongs to tropical rainforest climate and the average annual rainfall shows 2,000~4,000mm/year. One of major environmental problem occurred in rehabilitation area is soil erosion due to heavy rainfall. Soil erosion is easy to accelerate under the high rainfall level, especially in sharp cloudbursts such as squall.

From series of investigation and discussion, the soil spread to rehabilitation area shows different soil composition due to mixing overburden during soil stripping and stockpiling process. Moreover, it can be expected that this condition could be critical factor for the risk of soil erosion. Therefore, adequate rehabilitation process to limit soil erosion has to be considered such as establishment of erosion control structures and rapid growing cover crop species.

This paper describes the current situations in rehabilitation area at one of open cut coal mine in Indonesia and several considerations on soil erosion.

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317. Amarsaikhan Tsedendorj, Ryo Yamamoto, Akihiro Hamanaka, Takashi Sasaoka, Hideki Shimada, Matsui Kikuo, Geotechnical Issues of Narynsukhait Open Pit Coal Mine, Proc. of International Symposium on Earth Science and Technology 2013, 169-173, 2013.12, Coal production in Mongolia has rapidly increased with the development of new coal mines; from 5 million tons in 2000 to 25 million tons in 2012. However, in accordance with the rapid development of coal mines in Mongolia, geotechnical, operational and environmental issues have occurred such as the stability of highwall/lowwall and dumping/stock piles, the maintenance of transportation system, etc.

Especially, the geotechnical investigation and data are insufficient in main coal deposits. This is main cause of current problems such as slope slides, failures and collapses occurred at most open pit coal mines. In order to develop an appropriate mine design, these investigations have been conducted. In addition, the geological data has to be collected and urgent issues for further coal mine development were discussed.

This paper describes the current conditions of Narynsukhait open pit coal mine and then discusses its geotechnical issues.

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318. Mingwei Zhang, Takashi Sasaoka, Hideki Shimada, Hideki Shimada, Mechanism of Localized Stress Concentration in Interlayer Rock Mass and Its Impact on Deep Multi-seam Mining, Proc. of International Symposium on Earth Science and Technology 2013, 161-168, 2013.12, Although the extraction in the stress relaxation zone of deep multi-seam coal mining is relative safely, unnatural accidents still occur occasionally and sometimes threaten worker’s life security seriously. To explore the primary factor that caused these issues, the characteristics of lateral stress reconstruction and floor failure behavior in interlayer rock mass were surveyed based upon a series of field investigations. And both the redistribution of principle stress and phenomenon of interlayer rock failure were analyzed by numerical simulation. Then by the infinitesimal strain method, two types of infinitesimal analysis models in vertical and horizontal direction respectively were created to explore the reason of floor failure behavior and the mechanism of localized stress concentration. And the impact of localized stress concentration in interlayer rock mass induced by the extracted liberated seam on the subsequent extraction of protected seam was discussed finally. Main findings indicate that a certain extent of localized stress concentration in interlayer rock mass induced by the increased lateral stress results in these accidents. Reconstructed lateral stress provides the mechanical conditions for rock element failure; meanwhile the rock failure behavior further aggravates localized stress concentration in its lower half. Based upon the impact of localized stress concentration in interlayer rock mass, an extraction of protected seam is divided into safe, risky and general types, which helps the reliable mining in deep multiple coal seams..
319. Deyu Qian, Takashi Sasaoka, Hideki Shimada, Matsui Kikuo, Cheng Wang, Stability Control of Roadway in Protected Seam of Deep High-gas Multi-seams through Ascending Mining in China, Proc. of International Symposium on Earth Science and Technology 2013, 154-160, 2013.12, The number of coal mines with coal and gas outburst is shooting up with mining depth increasing in China. Mining protective coal seam is one of the most effective technologies preventing coal and gas outburst for mining high-gas multi-seams with low permeability. However, the difficulty of controlling roadway stability in upper protected seams above the gob jumps after mining lower protective coal seam. Based on the problem of surrounding rock stability control for roadway in the overlying protected seam of high-gas multi-seams through ascending stress-relief mining in Huainan mining area, the numerical simulation model is established according to actual engineering to analyze the redistribution of stress during roadway excavation and mining lower protective coal seam, and influence of bolt support on fissure and displacement fields of surrounding rock. Support technique of “three-high” bolt support system combined with pre-stressed anchor cable beam structure is put forward that is successfully applied in Guqiao Coal Mine. Field measurement has proved that the deformation of surrounding rock tended to be stable in 41 days after the support scheme was implemented in the roadway that was excavated in the upper protected seam in 150 days after mining the lower protective seam..
320. Purwanto, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Ridho Kresna Wattimena, Support Design of Cut and Fill Mine Method at Underground Gold Mine, Proc. of International Symposium on Earth Science and Technology 2013, 29-36, 2013.12, A detailed study to propose new design support systems for underground mine was carried out in this paper. Serious shotcrete failures have often occurred in Cibaliung Underground Gold Mine in Indonesia. Three main rock types, quartz vein as ore body, andesite-breccia altered by clorite-adularia on foot wall abundance and andesite-breccia altered by smectite-illite dominant on hanging wall rock. The cut and fill mining method was selected for this mine in accordance with the geometry of vein, topographic specifications, and annual production rates. Excavation size, distance between stope and decline, depth, and the impact of fault will influence the induced stresses. Different depths in multiple excavations were analyzed in this study especially on decline area. In this study, the engineering properties of rock masses were defined from field and laboratory test for each rock types. Support systems for decline were designed based on the suggestions of the Rock Mass Rating (RMR) system and the Q system of rock mass classification. Induced stress on different levels were calculated to define Stress Reduction Factor (SRF) and applied to predict the support system by Q system. .
321. Study on Settlement of Surrounding Soil and Its Countermeasures during Pipe Jacking Construction in the Deep Strata

Yasutaka MAEDA, Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI

Proc. of 24th Symposium on Japan Society for Trenchless Technology, pp.59-64, November 2013.
322. Study on Settlement of Surrounding Soil and Its Countermeasures during Pipe Jacking Construction in the Deep Strata

Yasutaka MAEDA, Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI

Proc. of 24th Symposium on Japan Society for Trenchless Technology, pp.59-64, November 2013.
323. Analytical Study of Thrust and Behavior of Soil on Double Pipe Roof Jacking Method

Nana YUDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Toru SATO

Proc.of 24th Symposium on Japan Society for Trenchless Technology, pp.37-44. November 2013

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324. Shitoku Shibata, Nay Zar Lin, Hideki Shimada, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, Pipat Lapwattanabandit, Three Dimension Numerical Modeling of Underground Mining Method at Mae Moh Lignite Mine in Thailand, Proc. of the 7th International Conference on Earth Resources Technology, CD-ROM, 2013.11, Mae Moh mine is the largest open-pit lignite mine in Thailand. In this mine, the development of underground mine from final highwall is considered after the surface mining operation is finished. Longwall mining is a common method for extracting coal from various thickness of coal seam. However, due to unfavorable geological conditions such as weak strata and huge final pit slopes, various preliminary studies on the introduction of underground mining systems have been conducted so far. This paper discusses the applicability of longwall mining system and its suitable design by means of three-dimensional numerical modeling: FLAC3D..
325. Naoya Inoue, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Ikuo Miyajima, Effect of Soil Composition on Growth of Paper Mulberry at Post Mine Surface in Open Pit Coal Mine, Proc. of the 7th International Conference on Earth Resources Technology, CD-ROM, 2013.11, Open cut mining is the typical mining method to produce coal in Indonesia and it gives serious impacts on surrounding environment. Therefore, an appropriate rehabilitation program has to be designed. The basic concept of rehabilitation in open cut mines is the creation of a stable and self-sustaining land surface. Hence, the soil characteristics and adequate selection of species to plant in rehabilitation area have to be considered. This paper describes the current situations in rehabilitation area at one of open cut coal mine in Indonesia and then discusses the effect of soil composition for growth of Paper Mulberry as one of effective species planted in post mine surface based on the laboratory tests. .
326. Kojiro Ueno, Takahiro Funatsu, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Effect of Specimen Size on Mode I Fracture Toughness by SCB Test, Proc. of the 7th International Conference on Earth Resources Technology, CD-ROM, 2013.11, The semi-circular bend (SCB) specimen was suggested in 1984 for testing mode I fracture toughness of rock. Recently, SCB specimen was extended and improved for many other applications by various researchers due to ease in handling though short rod (SR) specimen is recommended method. However, there are still rooms to consider for determining the fracture toughness of rock exactly by SCB specimen. This paper discusses the application of the SCB specimen for determining the fracture toughness of rock by comparison between the result of SCB specimen and SR specimen, and size effect using the SCB specimen..
327. Shinji Matsumoto, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Study on Occurrence of Acid Mine Drainage Inner Part of Dumping Site at KPC Coal Mine, Indonesia, Proc. of the 7th International Conference on Earth Resources Technology, CD-ROM, 2013.11, Acid Mine Drainage (AMD) is one of the serious problems which are caused in the mining operation and it may impact on the ecosystem due to low pH. Considering the fact that the dumping site is a large stockpile of waste materials and it is always exposed to the local climatic conditions, this area can be deemed as one of the sources of AMD. Therefore, it is important to prevent the occurrence of AMD from dumping site after constructng it. This paper describes the results of field investigation and laboratory experiment about AMD problem, and discuss the relevancy between the inner structure of dumping site and the occurrence of AMD. .
328. Study on Reduction of Construction Waste in Pipe Jacking

Journal of Micro-tunnelling, Vol.27, No.10, pp.16-18, 2013

Hideki SHIMADA, Takashi SENDA, Takashi SASAOKA, Kikuo MATSUI.
329. Taisuke Yamaguchi, Takashi Sasaoka, Hideki Shimada, Akihiro Hamanaka, Matsui Kikuo, SUGENG WAHYUDI, Hiroaki Tanaka, Shiro Kubota, Study on the Propagation of Blast-induced Ground Vibration and Its Control Measure in Open Pit Mine, Proc. of the 22nd Mine Planning and Equipment Selection, CD-ROM, 2013.10, In modern mining industry, the blasting technique is one of the most adopted techniques for rock excavation and fragmentation due to its economical and efficient aspects. However, compared with other methods, the use of explosives in blasting is limited by law as it may have a severe impact on the surrounding environment such as vibration, noise and dust. Especially, a ground vibration induced by blasting has to be paid much attention in the mining operation as it may give an obvious impact on the surrounding facilities and buildings and in many established safe level blasting criteria, the ground vibration level is characterized by using three parameters; duration, amplitude (peak particle velocity :PPV) and frequency. Current studies on the blast-induced ground vibration focus on two parameters amplitude and frequency that suggested by USBM when the concerned subject is structure, i.e.. Hence, the control of PPV and dominant frequency are very important in order to design an appropriate blasting standard and minimize its environmental impacts.

This paper discusses the propagation behavior of blast-induced ground vibration in the open pit mine and study by means of field experiments and numerical simulation. In addition, the methods for reduction of blast-induced ground vibration are also discussed by means of numerical simulation in this study.

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330. Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Study on the Water Quality Prediction of Acid Mine Drainage from Many Different Perspectives, Proc. of the 22nd Mine Planning and Equipment Selection, CD-ROM, 2013.10, Acid Mine Drainage (AMD) is one of the serious problems which are caused in the mining operation. The main factors which cause the problem are H2O and O2 and sulfide minerals such as iron pyrite. Sulfide minerals are usually contained in any type of crustal structure, and there is a possibility of generation of AMD in any area. The problem may impact on the ecosystem or people in the surrounding area since the acidic water is low-pH and usually contains high level of heavy metals. Therefore, it is important to prevent the problem in mining operation. A passive treatment is low-cost and easy to maintain for dealing with AMD problems. In a passive remediation, the study on behavior of AMD generation and elution behavior of heavy metals in a laboratory is necessary before introducing it in the mine site to construct it designed for the situation. Moreover, elution behavior may be changed by management of waste rock, as a practical matter, acidic water generates due to a rough treatment of waste rock in some mine sites. Therefore, in this research, the study on the waste rock was conducted for predicting a quality of acidic water by characterizing the rock and for elucidating effects of treatment of waste rock to elution behavior of heavy metals. This paper describes the results of laboratory experiments such as a column test and a sequence extraction for predicting elution behavior of heavy metals and an occurrence of acidic water, and treatment of waste rock for effective countermeasure for dealing with acidic water for a long term is discussed..
331. Shinji Matsumoto, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Study on the Water Quality Prediction of Acid Mine Drainage from Many Different Perspectives, Proc. of the 22nd Mine Planning and Equipment Selection, CD-ROM, 2013.10, Acid Mine Drainage (AMD) is one of the serious problems which are caused in the mining operation. The main factors which cause the problem are H2O and O2 and sulfide minerals such as iron pyrite. Sulfide minerals are usually contained in any type of crustal structure, and there is a possibility of generation of AMD in any area. The problem may impact on the ecosystem or people in the surrounding area since the acidic water is low-pH and usually contains high level of heavy metals. Therefore, it is important to prevent the problem in mining operation. A passive treatment is low-cost and easy to maintain for dealing with AMD problems. In a passive remediation, the study on behavior of AMD generation and elution behavior of heavy metals in a laboratory is necessary before introducing it in the mine site to construct it designed for the situation. Moreover, elution behavior may be changed by management of waste rock, as a practical matter, acidic water generates due to a rough treatment of waste rock in some mine sites. Therefore, in this research, the study on the waste rock was conducted for predicting a quality of acidic water by characterizing the rock and for elucidating effects of treatment of waste rock to elution behavior of heavy metals. This paper describes the results of laboratory experiments such as a column test and a sequence extraction for predicting elution behavior of heavy metals and an occurrence of acidic water, and treatment of waste rock for effective countermeasure for dealing with acidic water for a long term is discussed..
332. Akihiro Hamanaka, Naoya Inoue, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Ikuo Miyajima, Study on Backfilling of Soil for Revegetation at the Rehabilitation Area in Indonesian Coal Mine, Proc. of the 22nd Mine Planning and Equipment Selection, CD-ROM, 2013.10, Mining operation of open cut mines gives serious impacts on surrounding environment such as disturbance of the tropical rainforest, the pollution of surface and/or ground water, subsidence and erosion. Under such situations, rehabilitation is one of the important and considerable topics for an environment protection. Adequate rehabilitation program will solve these environmental issues and recover the ecosystem. The basic concept of rehabilitation in open cut mines is the creation of a stable and self-sustaining land surface in post mine surface involved the creation of conditions suitable for the establishment and permanent development of a dense cover of vegetation. In usual, a lot of open cut mine keep the topsoil individually in the natural forest during soil stripping process and spread the topsoil to rehabilitation area for success of revegetation. However, there are some considerable points for dealing with topsoil in situ such as the soil properties and severe compaction by heavy equipment. Therefore, the proper topsoil management has to be considered for establishment of vegetation in post mine surface.

This paper describes the current situations of rehabilitation at one of open cut coal mine in Indonesia and the results of investigation about the characteristics of soil spread in rehabilitation area as plant base.

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333. Hideki Shimada, Yasuhiro Yoshida, Yasuhiro Maeda, Takashi Sasaoka, Shuichi Fujita, Akihiro Hamanaka, Matsui Kikuo, Development of Grouting Material for Fly Ash Backfilling by Application of Chemical Injection, Proc. of the 22nd Mine Planning and Equipment Selection, CD-ROM, 2013.10, Generally, grouting in dam construction is the construction method that soil voids and crack around borehole is filled by pressurized injection of grouting material such as cement and permeability or mechanical characteristics of rock mass is improved.

It was previously mentioned that backfilling material plays an important role as a support against overburden pressure after finishing construction. Therefore most of the underground deformations caused by the injection may be caused by changing the condition of surrounding rock masses and numbers of cracks. That is why the discussion of appropriate injection methods, etc. in preparation for such changes is inevitable. From this point of view, the new backfilling material can be developed for several kinds of soil conditions in this paper.

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334. Shitoku Shibata, Nay Zar Lin, Hideki Shimada, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, Pipat LAOWATTANABANDIT, Preliminary Study on Design of Longwall Mining from Final Highwall at Mae Moh Lignite Mine in Thailand, Proc. of the 22nd Mine Planning and Equipment Selection, CD-ROM, 2013.10, The EGAT Mae Moh lignite mine is the largest open-pit coal mine in Thailand. The total geological and economical reserves of Mae Moh coal field are approximately 1,140 Mt and 825 Mt, respectively. The annual production is 12 Mton, which represents 90 % of the total coal production in Thailand, and tends to decrease gradually. In this mine, the development of underground mine from final highwall is considered after the open-pit mining operation is finished. Longwall mining is one of the common methods for extracting coal in various thickness of coal seams and is much more effective, productive and safer than any other mining methods. The productivity of longwall mining is potentially high because it is basically a continuous operation requiring fewer workers and allowing a high production rate to be sustained. Due to unfavorable geological and geotechnical conditions such as weak strata and huge final pit slopes in this mine, however, various studies on the introduction of underground mining systems have been conducted so far. Optimizing boundary and/or safety pillars and panel design for both safety and economics is a key part of planning longwall mines. This paper discribes the applicability of the longwall mining system from final highwall and its suitable design taking the slope stability into consideration by means of three-dimensional explicit finite-difference program FLAC3D producted by ITASCA..
335. Hideki Shimada, Yasutama Maeda, Takashi Senda, Takashi Sasaoka, Shuichi Fujita, Matsui Kikuo, Yasuhiro Yoshida, Dai Watanabe, Development of Backfilling Injection into Over-cutting Area Including Lubricant Behavior for Pipe Jacking in Deep Strata, 2013 International NO-DIG Downunder, Sydney AUSTRALIA, CD-ROM, 2013.09, In Japan when urban infrastructures need to be constructed, the difficulty of utilizing the ground or shallow strata will necessarily lead to the more frequent use of the deep strata. The common construction methods are open-cut, pipe jacking, and shield methods. In recent years a new pipe jacking method has been established that can be adapted to 20 m below the ground or more. Using the method, the drivage machine and the jacking pipe continue to move an underground until the completion of the driving. Therefore an over-cutting area (so-called tail-void) must be formed to lower the friction between the ground and the pipe. The over-cutting area is filled with lubrications. However, because the stress release of the ground continues to advance when the over-cutting area is formed, there are some challenges required to cope with the stability of the surrounding ground. In order to utilize the pipe jacking method in the deeper strata layers, the theory, analysis and installation of over-cutting area have to be systemized, and such systematic data must be stored. Therefore, the conditions of over-cutting area in the deep pipe jacking method are discussed using numerical analyses. Moreover, a lubricating material comprised of a mixture of surfactant and fly ash was developed for the application of pipe jacking in deep strata..
336. Fumihiko Matsumoto, Tomo Morita, Eiji Sakai, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Application of a Rectangular Pipe Jacking Machine for Pipeline Construction under Important Expressway, 2013 International NO-DIG Downunder, Sydney AUSTRALIA, CD-ROM, 2013.09, Today's pipe jacking technology in Japan is used as a construction method for pipe lines, such as water, sewer and power supply. This method has been achieved remarkable progress with the development of technical infrastructure. Usually, circular pipes are used for pipe line construction. Recently, various infrastructures are buried underground, and the effective use of underground is demanded. From this situation, demands of the pipe line construction using rectangular pipes are increasing gradually. To cope with these demands, the Box Culvert Pipe Jacking Method using rectangular pipe jacking machine was developed and has been used for rectangular pipe line construction.

This paper introduces about the characteristics and applicability of the rectangular pipe jacking method and shows the rectangular pipe line construction case using rectangular pipe jacking machine

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337. Study on Application of Hume Pipe on Pipe Jacking at Deep Strata

Nana YUDA, Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI

Proc. of the 34th West Japan Symposium on Rock Engineering, pp.61-66.
338. Study of Propagation Property by Blasting at Open Pit Mine

Taisuke YAMAGUCHI, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Sugeng WAHYUDI, Masatomo ICHINOSE, Masashi INOUE, Shiro KUBOTA

Proc. of the 34th West Japan Symposium on Rock Engineering, pp.23-26.
339. Purwanto, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Ridho Wattimena, Simulation Study of Support Design of Cut and Fill Mine Method at Underground Gold Mine, Proc. of the 6th International Symposium of In-situ Rock Stress, CD-ROM, 2013.08, In the last decade, the price of gold continues to rise, that generate mining activities increase linearly. Indonesia is one of the top ten gold producers in the world. One of the gold mines in Indonesia is Cibaliung Underground Gold Mine where located in west part of Java Island. Follows the trend, increasing production will be further target of this company.

The type of ore of Cibaliung underground gold mine is vein with low sulphidation. Basaltic andesite, andesite porphyritic, andesite breccia and vein breccia are constituent rocks and altered by smectite and chlorite. The mining method that carried out this mine is relative similar with some underground gold mines in Indonesia (Pongkor and Nusa Halmahera Mining) i.e. cut and fill mining method. For underground mine, geological information is a key to design such as geological structure, rock mass classification, discontinuities, and other geological parameters. They are linked each other. Four types support system has been recommended in Cibaliung mine. However some cracks still occurred in shotcrete support system along decline access. This paper discusses about support design of cut-and-fill mine method at underground gold mine. Commercial software namely Phase2 is used to review the stability of support system. Rock mass classification includes Q system and RMR, and laboratory tests were carried out to determine parameter for numerical modeling analysis.

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340. Shitoku Shibata, Nay Zar Lin, Hideki Shimada, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, Pipat Laowattanabandit, Application of Longwall Mining System at Mae Moh Lignite Mine, Proc. of the 34th West Japan Symposium on Rock Engineering, 2013.08.
341. Development of Ground Improvement Machinery Chain Conveyor Cutter (CCC)

Shizuo IKUTA, Yoshishige MASUDA, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA

Journal of MMIJ, Vol.129, No.8,9, pp.559-568, August 2013

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342. Hideki Shimada, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, Development of Injection Material for Offshore Structures Using Flyash-Surfactant Mixtures, International Journal of Applications of Oceanic Engineering, 2, 3, 2013.08, In recent years, many waste disposal sites have been conventionally constructed on land in Japan. However, there are limitations to constructing these sites on land. Thus, construction of the disposal sites by reclamation of nearby seashore has been conducted. Although injection material is required to make the established offshore structure, it has high mobility, and does not bleed, etc. Therefore, an injection material which uses a material mixture of the surface-active agent with flyash has been developed. Usage of flyash instead of cement leads to improved mobility, reduced construction cost and so on.

Considering these points, in order to clarify to at which degree the contents of surfactant affects the properties of the injected flyash mixture into the joints of steel sheet pile for offshore structures, different combinations of flyash, surfactant and.
343. Takashi Sasaoka, Yanlong Chen, Hideki Shimada, Akihiro Hamanaka, Matsui Kikuo, Appropriate Mining System for Residual Coal around End-slopes in Chinese Surface Coal Mines, Proc. of 32nd International Conference on Ground Control in Mining, 2013.07, Due to large mining depths, sometimes the stripping ratio becomes so large that some coal around the end-wall cannot be mined considering the economic factors at large-scale open pit coal mines in China. Also, to meet requirements of haul roads in the end-wall transporting system, wide transportation benches have to be left, which makes the slope angle of the end-wall slope smaller. Consequently, a large quantity of coal has to be left under the final end-wall slope. For these remaining coal resources, they will be buried again by the inpit dumping site and are impossible to be extracted once more in future. Therefore, how to recover the remaining coal around the end-wall slope with a safe and efficient extraction system before they are buried by the inpit dump is very urgent and valuable research for open pit coal mines in China. .
344. Hideki Shimada, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, Relation between Fluidability of Flyash Cement and Properties of Flyash Particles, Open Journal of Geology, 2013.07, A large amount of waste is produced by preparation plants. The properties of the waste vary depending on the minera- logical contents of the mother rock in which the coal is embedded. The waste quality depends on the method of mining and cleaning. The waste mainly consists of clays, quartz, carbonaceous materials, mica, pyrites, and so on. About 80% of coal-ash is now utilized and the remainder is disposed of at disposal sites. However, the life span of disposal sites is limited, and it is difficult to find new disposal sites. It is therefore requested that the percentage of utilized flyash be increased in all applicable fields in Japan. Thus, it is very desirable that cement supplemented with flyash be used as injection material for natural/artificial openings. With this perspective in mind, we attempt to clarify how much the size and shape of the flyash affects the properties of the injection mixture by way of an injection test..
345. Nay Zar Lin, Takashi Sasaoka, Hideki Shimada, Matsui Kikuo, An Alternative Approach of Slice Mining in Conjunction with Stowing Method for Soft Extra-thick Coal Semas, International Journal of Multidisciplinary Research and Advances in Engineering, 2013.07, The paper discusses alternative approach of multi-slice longwall mining in conjunction with stowing

method for 20-30 m thick soft coal seams at the Mae Moh coal field in Thailand. The applicability of

the longwall method for those coal seams was investigated by means of numerical method. Numerical

modelling was carried out using a three dimensional finite difference code “Flac3D.” The ground

behaviour, failure characteristics of strata, performance of stowing, and surface subsidence caused by

underground mining were evaluated and discussed in this paper based on the results obtained from

numerical analyses..
346. Takashi Sasaoka, Akihiro Hamanaka, Hideki Shimada, Matsui Kikuo, Hiroshi Takamoto, Pinyo Meechumna, Pipat Laowattanabandit, Study on Application of Highwall Mining System under Weak Geological Condition in Thailand, Journal of Physical Science and Application, 3, 6, 359-365, 2013.06, The EGAT Mae Moh coal mine is an open-cut coal mine in Thailand that produces about 16 million tons of lignite annually to generate 2,400 MW of electricity. The surface mine pit covers is 4 km by 7 km with mining depths ranging up to 260 m. A large pit slope is formed with the progression of the mining operation. However, massive slides in the pit slope occur often due to the existence weak planes such as faults and bedding, and the weak mechanical properties of the rocks. Hence, 200 m to 300 m boundaries of rock block including coal seams are left in front of faults in order to prevent slides and maintain the stability of the pit slope. As a result, there are significant coal reserves beneath the abandoned area along the pit slope. The focus of this paper is on the applicability and design of the highwall mining for recovering much of the coal left along the pit slope..
347. Hideki Shimada, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, Toru Sato, Effect of Application of Pipe Roof Method by Using Pipe Jacking on Behavior of Surrounding Soil, Journal of Physical Science and Application, 3, 6, 353-358, 2013.06, Tunnels in an urban area, in many cases, are constructed in soft ground which contains underground water, near existing facilities and structures. Structural stability for the tunnel and also the nearby structures and facilities is vital in this kind of work. Slurry pipe jacking was firmly established as a special method for the non-disruptive construction of underground pipelines of sewage systems. This method utilizes mud slurry that is formed around the pipes in order to stabilize the surrounding soil. In the pipe roof method the tubing elements that are constructed by slurry pipe jacking are near each other longitudinally, and create a rigid and stable lining before the excavation of the main tunnel. This paper discusses the application of a slurry pipe jacking system on the pipe roof method by means of numerical analysis. Because of the rigid behavior of the lining, the results show little subsidence, making this method a reliable method of constructing large tunnels with small cover in an urban area..
348. Nana Yuda, Yasutaka Maeda, Takashi Senda, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Fundamental Study on Deep Underground Pipe Construction Using a Pipe Jacking Method, Proc. of the 8th International Forum on Strategic Technology 2013,Ulaanbaatar MONGOLIA, 2013.06, This paper describes a fundamental study on deep underground pipe construction using a pipe jacking method. This study is aimed to discuss the probability of failure under constructing pipe in deep underground. The study has been carried out using a numerical simulation method. The 3D-σ was used to analyze the failure proximity. The failure proximity is based on the failure criterion of Mohr-Coulomb. This study was carried out by changing some influential parameters of the condition of the pipe and surrounding ground i.e. overburden, thickness of pipe, friction resistance, and aberration from the center of distributed force in order to grasp a response of the failure proximity. The simulation result shows that the failure proximity of the pipe rises with increasing overburden, friction resistance and aberration from the center of the distributed force, while on the other hand the failure proximity reduces by increasing thickness of the pipe. .
349. Ryo Yamamoto, Akihiro Hamanaka, Donghua Zhang, Takashi Sasaoka, Hideki Shimada, Matsui Kikuo, Study on Formation of Dumping Site at Open Pit Mine in Desert Area, Proc. of the 8th International Forum on Strategic Technology 2013,Ulaanbaatar MONGOLIA, 2013.06, Dumping area consists of the artificial slope which had been piled up by the mining waste granular. Dumping operation is one of the important works in open-pit mines. Overburden is stripped and waste soil/rock is transported to dumping area in order to expose and extract coal seams. Dumping operation is to transport waste rock from mining working face to dumping areas, and then form benches for slope stability and rehabilitation. This work spends much cost and represents a significant investment. Waste embankments usually have little if any practical use and may represent a long-term liability in the form of a potential source of pollution or stability hazard. Because of economic considerations, a risk of slide and a potential of its environmental impacts, dumping sites must be designed carefully.

However, the systematic researches on the stability of dumping sites are quite few and the large scale landslides still occur in the dumping sites. For instance, on October 29, 1991, a large slide which volume was about 10 Mm3 was occurred in the south external dumping site of Antaibao open pit mine in China. This slide caused 6 fatalities and many facilities loss. At present, a greater effort must be paid for the design and formation of appropriate dumping sites in order to save the investment, maintain the stability of dumping sites, mitigate the environmental impacts, and promote a long-term reclamation.

Moreover, in dessert area for instance north-west China and Mongolia, the dumping material is “loess” and landslides and subsidence often occur in their dumping sites. One of the major causes is the characteristics of loess. The strength of loess changes dramatically due to its water content and it becomes to be low under wet condition. The systematic researches on the stability of dumping sites of loess are also quite few because the property of loess is very unique.

This paper describes the present conditions of dumping sites in open pit coal mines and then discusses the formation mechanism of dumping piles under different conditions based on the results of laboratory tests.

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350. Akihiro Hamanaka, Naoya Inoue, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Ikuo Miyajima, Fundamental Study on Revegetation of Post Mine Surface by Paper Mullberry in Open Cut Mine, Proc. of the 8th International Forum on Strategic Technology 2013,Ulaanbaatar MONGOLIA, 2013.06, Indonesia produces over 350Mt of clean coal in 2012 and is the second largest coal exporter to Japan, accounting for 30 Mt/y. Almost of the coal produced is from open cut mines. Mining operation of open cut mines gives serious impacts on surrounding environment. Therefore, an appropriate rehabilitation program has to be taken into consideration when the mine plan is designed. The basic concept of rehabilitation in open cut mines is the creation of a stable and self-sustaining land surface in post mine surface involved the creation of conditions suitable for the establishment and permanent development of a dense cover of vegetation. Hence, the soil characteristics in rehabilitation area and adequate selection of species to plant in there have to be considered.

This paper describes the current situations in rehabilitation area at one of open cut coal mine in Indonesia and then discusses the application of Paper Mulberry as one of effective species planted in post mine surface based on the laboratory tests.

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351. Amarsaikhan Tsedendorji, Akihiro Hamanaka, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Study on Exploration Procedures and Optimization of Opencast Mining Parameters for Deeper Coal Deposits, Proc. of the 8th International Forum on Strategic Technology 2013,Ulaanbaatar MONGOLIA, 2013.06, Deep coal deposits tend to be explored and have more exploitation according to certain procedures, and if its correlation with opencast mining scales on the ground surface is defined properly, it will be an important issue of theory and practice. This paper describes the technical issues on the procedures of exploration and the optimization of the opencast mining parameters. .
352. 島田 英樹, Yahuhiro Yoshida, Takashi Senda, Yasutaka Maeda, 笹岡 孝司, 藤田　修一, 松井 紀久男, Dai Watanabe, Development of Backfilling Material Using Fly Ash by Application of Chemical Injection, Proc. of 17th Conference on Environment and Mineral Processing, 2013.06, Lubrication can effectively reduce the needed thrust if a discrete layer of lubricant is maintained between a pipe and the excavated soil. A lower frictional force allows greater jacking lengths to be achieved. The reduction of frictional stress around the pipe strongly affects the efficiency of lubrication injection. The lubricant must be designed to form a layer in the surrounding soil, be pressurized to overcome ground water pressure and stabilize the over-cutting area. The lubricant should also fill the over-cutting area completely to minimize surface settlement. However, for a commercial lubricant to be effective, it has been suggested that ingredients such as sodium and potassium be eliminated. As a result, in order that a lubricant does not lose its function as a support against the overburden pressure of an over-cutting area and to enable a reduction in thrust, a higher quality lubricant which can overcome these problems must be developed as soon as possible. In this paper, in order to examine the characteristics and behaviour of a material developed as a lubricant and backfilling for a deeper strata excavation system such as a pipe jacking, a fundamental investigation is performed and the various results are discussed..
353. 島田 英樹, 吉田　安廣, 千田　尚, 前田 泰孝, 笹岡 孝司, 藤田 修一, 松井 紀久男, 渡辺 大, Development of Backfilling Material Using Fly Ash by Application of Chemical Injection, Proc. of 17th Conference on Environment and Mineral Processing, 51-57, 2013.06, Lubrication can effectively reduce the needed thrust if a discrete layer of lubricant is maintained between a pipe and the excavated soil. A lower frictional force allows greater jacking lengths to be achieved. The reduction of frictional stress around the pipe strongly affects the efficiency of lubrication injection. The lubricant must be designed to form a layer in the surrounding soil, be pressurized to overcome ground water pressure and stabilize the over-cutting area. The lubricant should also fill the over-cutting area completely to minimize surface settlement. However, for a commercial lubricant to be effective, it has been suggested that ingredients such as sodium and potassium be eliminated. As a result, in order that a lubricant does not lose its function as a support against the overburden pressure of an over-cutting area and to enable a reduction in thrust, a higher quality lubricant which can overcome these problems must be developed as soon as possible. In this paper, in order to examine the characteristics and behaviour of a material developed as a lubricant and backfilling for a deeper strata excavation system such as a pipe jacking, a fundamental investigation is performed and the various results are discussed..
354. Takashi Sasaoka, Akihiro Hamanaka, Hideki Shimada, Matsui Kikuo, Hiroshi Takamoto, Pinyo Meechumna, Pipat Lapwattanabandit, Study on Application of Highwall Mining System under Weak Geological Condition in Thailand, Journal of Physical Science and Application, 3, 6, 359-365, 2013.06, The EGAT Mae Moh coal mine is an open-cut coal mine in Thailand that produces about 16 million tons of lignite annually to generate 2,400 MW of electricity. The surface mine pit covers is 4 km by 7 km with mining depths ranging up to 260 m. A large pit slope is formed with the progression of the mining operation. However, massive slides in the pit slope occur often due to the existence weak planes such as faults and bedding, and the weak mechanical properties of the rocks. Hence, 200 m to 300 m boundaries of rock block including coal seams are left in front of faults in order to prevent slides and maintain the stability of the pit slope. As a result, there are significant coal reserves beneath the abandoned area along the pit slope. The focus of this paper is on the applicability and design of the highwall mining for recovering much of the coal left along the pit slope..
355. 笹岡 孝司, 島田 英樹, 竹内啓介, 濱中晃弘, 松井 紀久男, 佐々木誠, 林克彦, Development of Multi-layer Structure Bit and Its Suitable Design for Tunnel Drivage Machine, Proceeding of Aachen International Mining Symposia AIMS 2013, Fourth International Symposium Mineral Resources and Mine Development, 31-40, 2013.05, Tunnel drivage machines, such as the shied machine, are now widely applied for the construction of underground space. In recent years, the distance of their construction span has been increasing and the shield tunneling system can be applied for ground that contains cobble stones and gravel soil. Therefore, the application of a shield drivage machine has become wider due to their advanced technology. However, once the conventional cutter bit hits with cobble stone and/or a boulder stone, the cutter bit fails and the cutting efficiency decreases dramatically or is completely lost. Therefore, the improvement of the impact resistance of their cutter bit is one of the major research topics for a shield tunneling system.
This paper describes the multi-layer structure bits developed in our research and discusses the impact resistance and suitable design by means of laboratory tests and numerical simulation.
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356. Yanlong Chen, 島田 英樹, 笹岡 孝司, Akihiro Hamanaka, 松井 紀久男, Research on Exploiting Residual Coal around Final End-walls by Highwall Mining System in China, International Journal of Mining, Reclamation and Environment, 27, 3, 2013.05, To improve the resources’ recovery ratio and the economic benefits of surface

coal mines, we present a residual coal extraction technology from final end-walls

with highwall mining system in China. Based on MarkBieniawski formula and

tributary area theory, the evaluation methodology of highwall mining parameters

under the thick cover was given. Furthermore, the pillar design chart in the

highwall mining system under the thick cover was also concluded. In order to

examine the rationality of the pillar design with the presented methodology,

numerical simulation was also carried out. The outcome shows that it will require

a larger pillar width with the thickening of the cover; hence, the recovery ratio will

decrease correspondingly. To improve coal recovery ratio, the backfilling

technology should be considered under the thick cover. According to twodimension

numerical simulation results, the calculated methodology for pillar

stability of highwall mining system under the thick cover presented in this article

is acceptable. It also found that keeping the pillar width-to-height ratio above 1 is

a key measure to maintain the pillar stable and integral under the thick cover.

Meanwhile, it can be concluded that the bigger safety factor is demanded for roof

of openings under much thicker cover and higher stress ratio. In other words, the

highwall mining system is feasible to extract the residual coal around end-walls in

Chinese surface coal mines. Thus, not only coal recovery ratio can be improved

but also can increase the production life of surface coal mines in China..
357. Hideki Shimada, Akihiro Hamanaka, Takashi Sasaoka, Matsui Kikuo, Development of Flash Setting Material for Temporally Pipeline Restoration after Earthquake, Open Journal of Geology, 3, 2, 2013.04, There are many earthquakes in Japan. If a large earthquake were to occur, it is necessary to consider how pipelines such as: gas, sewage, telecommunications, and so on are restored quickly. At that time, damaged gas pipelines are very dan- gerous because fire in large areas could be caused by the leakage of gas from the damaged pipeline. Accordingly, it is necessary for gas companies to stop the supply of gas to houses over a large area. Once the gas supply is stopped, there is a considerable amount of time to repair the pipelines over the area. For this reason, a quick method for restoring damaged gas pipelines would be useful after an earthquake. Recently, we have been developing new flash setting mate- rial for the damaged gas pipeline by an injection into the house connection of gas when the gas supply is stopped quickly in an emergency. From these points of view, in order to clarify to what degree the contents of flash settling ma- terial affect the properties of the injected fly ash mixture causing heavy damage to the gas pipeline in an earthquake, different combinations of fly ash, chemical agents and water were considered in several experiments..
358. Takashi Senda, Hideki Shimada, Takashi Sasaoka, Matsui Kikuo, Behavior of Surrounding Soil during Construction and Its Countermeasures Using Pipe Jacking Method in Deep Strata, Open Journal of Geology, 3, 2, 2013.04, In Japan when urban infrastructures need to be constructed, the difficulty of utilizing the ground or shallow strata will lead to a more frequent use of the deep strata. The common construction methods are open-cut, pipe jacking, and shield methods. In recent years, a new pipe jacking method has been established that can be adapted to 20 m below the ground or more. Using this method, the drivage machine and the jacking pipe continue to move an underground until the com- pletion of the driving. Therefore an over-cutting area (so-called tail-void) must be formed to lower the friction between the ground and the pipe. The tail-void is filled with lubrications. However, because the stress release from the ground continues to advance when the tail-void is formed, hence there are some challenges required to cope with the stability of the surrounding ground. In order to utilize the pipe jacking method in the deeper strata layers, the theory, analysis and installation of tail-void have to be systemized, and such systematic data must be stored. Therefore, the conditions of tail-void in the deep pipe jacking method are discussed using numerical analyses..
359. Shizuo IKUTA, Yoshishige MASUDA, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA, Development and Application of Ground Improvement Machinery Chain Conveyor Cutter, Journal of Novel Carbon Resource Science, 18-25, 2013.02, Natural ground generally consists of various types of soils and each soil independently reacts with cementing materials. In order to realize uniform and stable soil ground improvement, it is preferable that the excavated soils are vertically mixed together as a whole. Chain Conveyor Cutter (CCC) is like a chain conveyor but is installed vertically on a pile driver, sunk into and is raised up from the ground. An 180 kw water cooled electric motor rotates chain units and enables CCC to cut harder soils at the bottom of the machine discharging cement slurry. The soils and cement slurry are hauled up by the scraper bars of the chain units being mixed together on the way up to the ground surface, which consequently establishes stable improved ground..
360. Shizuo Ikuta, Yoshishige Masuda, Matsui Kikuo, Hideki Shimada, Takashi Sasaoka, Development and Application of Ground Improvement Machinery Chain Conveyor Cutter, Journal of Novel Carbon Resource Science, 7, 18-25, 2013.02, Natural ground generally consists of various types of soils and each soil independently reacts with cementing materials. In order to realize uniform and stable soil ground improvement, it is preferable that the excavated soils are vertically mixed together as a whole. Chain Conveyor Cutter (CCC) is like a chain conveyor but is installed vertically on a pile driver, sunk into and is raised up from the ground. An 180 kw water cooled electric motor rotates chain units and enables CCC to cut harder soils at the bottom of the machine discharging cement slurry. The soils and cement slurry are hauled up by the scraper bars of the chain units being mixed together on the way up to the ground surface, which consequently establishes stable improved ground..
361. Yasutaka MAEDA, Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Analytical Study on Behavior of Improved Surrounding Soil by Grouting during Pipe Jacking Construction in the

Deep Strata, Proc. of the Kick-off Seminar on ASEAN-Japan BUILD UP Cooperative Education Program for Global Human Resource Development in Earth Resource Engineering, Bangkok THAILAND, 84-87, 2013.01, In Japan, the land of large metropolitan areas is highly utilized in increasingly complex conditions; therefore, the underground area is used to establish social infrastructures because of difficulties to use on the ground. Even in the publicly used shallow strata such as road sections, social infrastructures including subways, water and sewage systems, electrical equipment, communications facilities, and gas pipelines have already been installed and are very congested. Nowadays, when urban infrastructures need to be constructed, the difficulty of using the ground or shallow strata will necessarily lead to the more frequent use of the deep strata.

The general advantages of using the deep strata which will help maintain the quality of social capital include stability, earthquake resistance, constant temperature and humidity, and blockages of vibration and noise, all of which will not affect the view on the ground. The good quality of social infrastructure will be installed by taking advantages of the deep strata construction of social infrastructures. Consequently, the development of effective, appropriately designed utilization of the deep strata will be strongly encouraged.

Generally used construction methods include open-cut, pipe jacking, and shield methods. In the past, even during constructing in the shallow strata, due to the neighboring construction it is difficult to secure road traffic, prevent construction hazards such as vibration and noise, and to also take steps to protect the existing congested underground installations. In addition, the pipe jacking method has been widely adopted as a general construction method owing to its recent marvelous technological development. However as to the pipe jacking, example of construction in the deep strata is few and study is insufficiency.

From above, in this paper the applicability of pipe jacking method in the deep strata is discussed. Especially, a behavior of the tail-void which is considered important factor in pipe jacking construction is discussed.

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362. Shinji MATSUMOTO, Hideki SHIMADA, Akihiro HAMANAKA, Takashi SASAOKA, Kikuo MATSUI,Ginting Jalu KUSUMA, Study on Geo-chemical and Geotechnical Properties of Overburden Dumps for the Control of Acid Mine Drainage
, Proc. of the Kick-off Seminar on ASEAN-Japan BUILD UP Cooperative Education Program for Global Human Resource Development in Earth Resource Engineering, Bangkok THAILAND, 88-91, 2013.01, The main operation of surface coal mining is basically the removal of topsoil and overburden in order to extract the coal. If the overburden rocks contain a significant amount of reactive sulfide minerals rather than alkali minerals, severe acid mine drainage (AMD) is likely to occur when they are exposed and react with oxygen and water. AMD development in the overburden dumps occurs via complex physical and chemical weathering reactions. The different rates of the various mineral weathering reactions within the overburden coupled with the local climate conditions (i.e. intervals of rainfall, temperature) may cause temporal changes to the drainage chemistry. Several studies have been conducted in order to recognize the heterogeneity of the overburden dumps with several purposes, such as those focusing on the field monitoring, large-scale testing and numerical methods. In this study, a series of field investigations, physical and geochemical laboratory characterizations were conducted in order to evaluate the internal physical structure and geochemical characteristics of the coal mine overburden dumps.

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363. Jin OKAZAKI, Shogo KATO, Yoshiaki SAKAI, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Kikuo MATSUI, Fundamental Study on Development of Soil Improvement Agent for Revegetation in Aggregate Mine, Proc. of the Kick-off Seminar on ASEAN-Japan BUILD UP Cooperative Education Program for Global Human Resource Development in Earth Resource Engineering, Bangkok THAILAND, 101-104, 2013.01, In Japan, the number and the scale of public works and construction of buildings have been decreased due to the recession and the critical public opinion about public works. However, the necessary public works have been done as same as before.

Development of aggregate resources for use in structural concrete has been encouraged in Japan to support infrastructure improvement and national land conservation. Natural aggregate is a valuable resource necessary for sound economic development and its importance is growing. However, against the backdrop of the ongoing depletion of resources, growing concern over nature conservation and increasingly tightened control over resource use, the supply of natural aggregates such as sea/river/pit sand and sea/river gravel has been decreasing.

Natural aggregate resources have been developed to be used for production of structural concrete for national land conservation and infrastructure improvement. In Chiba prefecture which is adjacent to the Tokyo Metropolitan District where concrete is consumed in large quantities, 16,016m3 of natural aggregate resources were extracted in 2009.The national aggregate resources extracted in Chiba are mostly pit sand/gravel, and development of sand and gravel resources are accompanied by forest development which absorbs carbon dioxide. Therefore, promotion of revegetation on mined land is urgent issue in terms of suppressing global warming. Addressing this issue on Chiba prefecture which is major production area for aggregates will contribute to promotion of revegetation in aggregate mining sites in other prefectures, which face a similar issue.

It has been pointed out that the main cause of plant death in mined land is low permeability, lack of nutrients, and soil compaction caused by heavy equipment. In this consideration, we aimed to improve soil physical properties on mined land and feed nutrients necessary for plant growth by making soil conditioner from dewatered sludge, which generated in the process of washing and classifying aggregates.

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364. Taisuke YAMAGUCHI, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Kikuo MATSUI, Shiro KUBOTA, Numerical Simulation on Propagation of Blast-induced Ground Vibration, Proc. of the Kick-off Seminar on ASEAN-Japan BUILD UP Cooperative Education Program for Global Human Resource Development in Earth Resource Engineering, Bangkok THAILAND, 109-112, 2013.01, Rock blasting is the rock excavation technique most widely adopted in the various fields of the mining and construction industries because of its economical and efficient aspects.

However, the application of blasting technique is limited by law because it may have a serious impact on surrounding environment such as ground vibration, noise and dust. Especially, ground vibration may cause the damage to the surrounding structures. Thus, mining companies which apply the blasting technique have to control the blast-induced ground vibration in order to minimize or eliminate the possibility of damage to nearby structures or to reduce complaints from neighbors.

As many researches have studied on blasting techniques and its impact on the surrounding environments, several equations and methods for prediction of blast-induced ground vibration have already been proposed so far. Most of them adopt the Peak Particle Velocity for evaluation the degree of blast vibration. Each particle in the rock mass vibrates in a complicated motion, which is approximately elliptical motion in several cycles with varying amplitudes. The highest velocity during this motion is called as Peak Particle Velocity (PPV). However, the general prediction equation and/or method have not been developed yet because the different rock parameters and ground conditions have an obvious impact on elastic wave propagation.

From these points of view, the 2-D numerical simulation method has been developed and evaluated by means of the results of field experiments in this study. In addition, a case study has also been conducted by using this numerical simulation in order to discuss the effects of ground conditions on blast vibration in quantity.

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365. Ryo YAMAMOTO, Donghua ZHANG, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Kikuo MATSUI, Experimental Study on Formation of Dumping Piles at Open Pit Mines in Dessert Area, Proc. of the Kick-off Seminar on ASEAN-Japan BUILD UP Cooperative Education Program for Global Human Resource Development in Earth Resource Engineering, Bangkok THAILAND, 113-116, 2013.01, Dumping area consists of the artificial slope which had been piled up by the mining waste granular. Dumping operation is one of the important works in open-pit mining operation. Overburden is stripped and waste soil/rock is transported to dumping area to expose and extract coal seams. Dumping operation is to transport waste rock from mining working face to dumping areas, and then forming a bench for slope stability and rehabilitation. This work spends much cost and represents a significant investment. Waste embankments usually have little if any practical use and may represent a long-term liability in the form of a potential source of pollution or stability hazard. Because of economic considerations, a risk of slide and a potential of its environmental impacts, dumping sites must be designed carefully.

However, the systematic researches on the stability of dumping sites are quite few and the large scale landslides still occur in the dumping sites. For instance, on October 29, 1991, a large slide was occurred in the south external dumping site of Antaibao open pit mine. The sliding volume has about 10Mm3, caused 6 person death and a huge property loss. At present, a greater effort must be paid for design and formation of appropriate dumping sites in order to save investment, maintain dumping sites stability, mitigate environmental effects, and promote long-term reclamation.

Moreover, the dumping material is “loess” in dessert area for instance north west China and Mongolia where the seismic disasters such as land slide and subsidence occur. The strength of loess is high under dry condition. On the other hand, it becomes to be low under wet condition. The systematic researches on the stability of dumping sites of loess are also quite few because the property of loess is very unique.

This paper describes the field investigation conducted in Heidaigou open pit mine where overburden material is loess in China and discusses the formation mechanism of dumping piles under different conditions based on the results of laboratory tests.

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366. Shitoku SHIBATA, Hideki SHIMADA, Nay Zar LIN, Akihiro HAMANAKA, Takashi SASAOKA, Kikuo MATSUI, Pipat LAOWATTANABANDIT, Three-Dimensional Numerical Modeling of Underground Mining Method at Mae Moh Lignite Mine in Thailand, Proc. of the Kick-off Seminar on ASEAN-Japan BUILD UP Cooperative Education Program for Global Human Resource Development in Earth Resource Engineering, Bangkok THAILAND, 250-253, 2013.01, The Mae Moh mine is located in Mae Moh district, Lampang province, about 630 kilometers north of Bangkok, Thailand. This mine is operated by EGAT (Electricity Generating Authority of Thailand), and it is the largest open-pit lignite mine in Thailand. The total geological and economical lignite reserves of the Mae Moh coal field are approximately 1,140 million tons and 825 million tons, respectively. The annual production is about 16 million tons, which represents 70 % of the total coal production of Thailand. All of the lignite produced from the mine is supplied to the 2,400 MW Mae Moh power plant, which is providing 15% of the total electricity demand of Thailand. 347 MT of lignite has been produced, and the remaining future reserve is about 478 MT (as of 2010). In the near future, the open pit limit will be reached and underground mine will be developed from the depth of 400-600 m from the surface. However, due to the problems such as poor geological conditions, extra thickness of coal seams (20-30 m thickness) and weak mechanical properties of rock, various studies, such as final open pit stability, an applicable underground mining system for Mae Moh mine are being conducted at the present. In this paper, it is discussed the response of pit slope in different extent of rib pillars, which is measured horizontally minimum distance from the open pit wall to underground mine, and in different size of panels and mining height, and the interaction between open pit slope and underground working by means of numerical analyses using three-dimensional finite difference code FLAC3D..
367. PURWANTO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Takahiro FUNATSU, Ridho WATTIMENA, Suseno KRAMADIBRATA, Shotcrete Crack Condition at Cikoneng Decline - Cibaliung Underground Gold Mine, Proc. of the 6th Japan-Korea Joint Symposium on Rock Engineering, Okinawa JAPAN, 2013.01, Mine mineral demand in the world is increasing with the increase of mineral price and gold is one of the rapid increase mineral in a last decade. Geological information is a key for underground design. The most important parameters are geological structure, rock mass strength, main stress and strain, rock mass classification, discontinuities, etc. All of these may have impact on underground stability, if some are suitable, and only just one is troubled, it can be due to instability in underground.

Cibaliung Underground Gold Mine (CUGM) is one of the gold mines in Indonesia were located in west part of Java in Indonesia. The type of ore is vein with low sulphidation epithermal deposit. This underground mine has two-shot targets; Cikoneng area, production is carried out predominantly through the hanging wall, and Cibitung area, production is primarily through the foot wall of the vein. In this paper, are discussed the fundamental information regarding the cracks those occur on shotcrete along Cikoneng Decline as a main road in CUGM. Field investigation such as scan line method, joint orientation measurement combine to secondary data is used for this study.

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368. Sri MARYATI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Designing Geodatabase Template for Monitoring for Reclamation Progress in Indonesia Coal Mining, Proc. of the 6th Japan-Korea Joint Symposium on Rock Engineering, Okinawa JAPAN, CD-ROM, 2013.01, Reclamation is an integral part of the mining operation with the ultimate aim is to restore disturbed land caused by surface mine operation to function according to its designation. Considering the importance of the mining reclamation, Indonesian government had issued several regulations concerning reclamation. Indonesian government regulation No 78/2010 concerning reclamation and mine closure stated that mining permit holder and special mining permit holder of exploration and production operation are obliged to reclaim the area until result satisfies the success criteria.

The Minister of Forestry Regulation of Indonesia No.P.60/Menhut-II/2009 regarding guidance for assessment the success of forest reclamation mentioned that the assessment of reclamation success includes site preparation, erosion control, and re-vegetation. The reclamation area needs to be monitored periodically to identify the progress of reclamation and monitor the reclamation success and its success is dependent on many parameters. Hence, it is a significant challenge on how to manage and monitor multi parameter and multi temporal data.

Taking account the matters mentioned above, this study therefore aims to design a geodatabase template for monitoring reclamation progress in Indonesian coal mining and ArcCatalog ArcGIS 9.3 software was used. The required data for building the geodatabase refers to Minister of Forestry Regulation No.P.60/Menhut-II/2009. The process of building the geodatabase template includes the following steps: collect and group dataset; design feature dataset, feature class and attribute; create geodatabase; and create database dictionary.

According to the research result, geodatabase template is very promising for monitoring reclamation progress in Indonesian coal mining, it allows to monitor the reclamation progress periodically with easily.

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369. Nay Zar LIN, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Preliminary Study on Design of Rib Pillar between Open-pit Slope and Underground Working Area in Extra-thick

Coal Seams, Proc. of the 6th Japan-Korea Joint Symposium on Rock Engineering, Okinawa JAPAN, CD-ROM, 2013.01, The paper discusses preliminary study on design of rib pillar between open-pit slope and underground working in thick seams in Mae Moh lignite mine in Thailand. Mae Moh mine is currently operated as open pit mine and it is the largest open pit coal mine in Thailand. In the near future, however, the final pit limit of the mine will be reached and underground mining will be developed from the final highwall in the depth of 400-600 from the surface. However, due to the adverse geological and geotechnical conditions, such as weak mechanical properties of rock, extra-thickness (20-30 m) of coal seams, and huge final pit slope, various studies for future underground mine, including open pit slope stability, an applicable underground mining method, and effect of underground mining on open pit slope stability, etc., are being carried out at the present. In this study, it was investigated the response of pit slope in different extent of rib pillars, which is measured horizontally minimum distance from the open pit wall to underground mine, and in different size of panels and mining height, and the interaction between open pit slope and underground working. The investigation was conducted by means of numerical analyses using three dimensional finite difference code FLAC3D..
370. Yanlong CHEN, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI , Simulation Accuracy Analysis of Slope Stability Based on Finite Element Shear Strength Reduction (SSR) Method, Proc. of the 6th Japan-Korea Joint Symposium on Rock Engineering, Okinawa JAPAN, CD-ROM, 2013.01, Comparing with the traditional limit equilibrium methods, a finite element method has some obvious advantages for analyzing slope stability. As a result, a strength reduction factor method based on the finite element theory is used widely. This paper represents the fundamental principle of the shear strength reduction approach for calculation of slope safety factor by means of finite element method. Also, the influence factors for the accuracy of the slope safety factor were discussed. It is found that the slope model should be built by using the six-node triangle type, and the element size ratio is 0.03, and it is recommended that the distance from the crest of the slope to the left boundary should be more than 2.5 times of the slope width; the distance from the toe of the slope to the right boundary should be at least 3 times of the slope width; and the distance from the toe of the slope to the bottom boundary should be at least 1.5 times of the slope height. The outcome shows that the simulation results by using optimal slope model have the high accuracy..
371. Studies on Settlement of Surrounding Soil and the Measures during Pipe Jacking Construction in the Deep Strata

Proc. of 23rd Symposium on Japan Society for Trenchless Technology, pp.59-66, November 2011

Yasutaka MAEDA, Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Masatomo ICHINOSE.
372. Analytical Study of Thrust and Behavior of Soil on Pipe Roof Double Jacking Method

Proc. of 23rd Symposium on Japan Society for Trenchless Technology, pp.51-58, November 2011

Shunya AOYAMA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Toru SATO, Masatomo ICHINOSE

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373. Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA, Coal Mine Development in South Gobi, Mongolia, Proc. of the 21st International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2012.11, Much attention is paid to Mongolia, particularly, South Gobi as a new source of coal. Many countries such as Japan, Korea, USA, as well as nearby China and Russia are very interested in large scale coal mine projects, namely, Tavan Tolgoi project in South Gobi area where affluent and high quality coal deposits for steaming and metallurgical use are underlain. There is, however, a bottle neck by poorly developed infrastructure in South Gobi, which has for a long time prevented from coal mine development there. A couple of new coal mines have already been developed and coal has been mined in South Gobi. Considering environmental impacts from development of coal mines, the Department of Earth Resources Engineering, Kyushu University (DEREKU) has started a joint research program with Mongolian University of Science and Technology (MUST).

This paper describes some problems in development of coal mines in South Gobi, considering social, economical and environmental factors based on the field surveys.

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374. Sri MARYATI, Hideki SHIMADA, Candra NUGRAHA, Kris PRANOTO, Nurwita SARI, Takashi SASAOKA, Kikuo MATSUI, Monitoring of Reclamation Progress in Indonesian Coal Mining Using Remote Sensing and Geographic Information System (GIS), Proc. of the 21st International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2012.11, Reclamation is an integral part of the mining activities to restore disturbed land by mining operation in order to be safe, stable and productive land according to its capability and designation. Considering the importance of reclamation in mining activities, Indonesia Government had issued several regulations related to mine reclamation. Monitoring of reclamation area should be conducted periodically to assess the success of reclamation and to monitor the progress of reclamation for continual improvement. Monitoring of reclamation area by collecting data and information directly in the field will be very time consuming. Thus, there is a need of methods that can periodically monitor a wide reclamation area rapidly and accurately. Purpose of this study is to monitor reclamation progress in Indonesia coal mining using remote sensing and geographic information system. Based on research result, multi temporal satellite images can be applied for identification reclamation area change, vegetation density change and correlation between vegetation density (NDVI) value and age of vegetation planting..
375. Takashi SASAOKA, Keisuke TAKEUCHI, Hideki SHIMADA, Akihiro HAMANAKA, Kikuo MATSUI, Makoto SASAKI, Katsuhiko HAYASHI, Development of New Long-life Bit for Tunnel Drivage Machine, Proc. of the 21st International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2012.11, Tunnel drivage machine such as shield machine are now widely applied for the construction of underground space. In recent years, the distance of each span is getting longer and longer in order to decrease the construction cost and prevent the change of bits and/or the installation of intermediate shafts. Under these conditions, a new long life bit with high wear and impact resistances has been designed and developed by using cemented carbide tips and unique structures..
376. Hideki SHIMADA, Ginting Jalu KUSUMA, Akihiro HAMANAKA, Shnji MATSUMOTO, Takashi SASAOKA, Kikuo MATSUI, Model of the Internal Structure of Coal Overburden Dumps for the Control of Acid Mine Drainage Generation, Proc. of the 21st International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2012.11, The presence of water and oxygen are some of the important factors influencing the oxidation rate of sulfide minerals within overburden dumps. In the overburden dumps, the availability of water and oxygen is strongly controlled by the physical structure of the dump, as well as the surface climate and geochemical reaction within the dump. In this study, made up of a series of field investigations, physical and geochemical laboratory characterizations were conducted in order to evaluate the internal physical structure and geochemical characteristics of coal mine overburden dumps. As the result of a series of analysis, alternate geochemical characteristics may control the acidification-neutralization reaction of infiltrated water, the precipitation of secondary minerals and may subsequently determine the quality of the overburden dump drainage. The internal structure formed and the spatial heterogeneity of geochemical characteristics in the overburden dumps controls the acid drainage inhibition process within the dumps..
377. Taisuke YAMAGUCHI, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Kikuo MATSUI, Shiro KUBOTA, Study on Prediction of Blast-induced Ground Vibration in Limestone Quarries by Means of Numerical Simulation, Proc. of the 21st International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2012.11, In modern mining industry, blasting is the rock excavation and fragmentation technique most widely adopted because of its economical and efficient aspects. However, a ground vibration induced by blasting may give serious impacts on surrounding environment and has to be paid much attention in the mining operation. Peak Particle Velocity (PPV) is one of the important parameters related with ground vibration. Hence, the prediction of PPV is very important in order to design an appropriate blasting standard and minimize its environmental impacts.

This paper discusses the applicability of the numerical simulation to the prediction of PPV in limestone quarries based on the results of field experiments. In addition, the effects of rock properties and geological conditions on ground vibration are also discussed by means of numerical simulation in this study. .
378. Yanlong CHEN, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Application of End-wall Mining System in Chinese Open Pit Coal Mine, Proc. of the 21st International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2012.11, A great deal of coal will be left under the final end-walls in Chinese open pit mines because of lower slope angle in shovel-truck mining technology system and larger mining depth. In traditional surface mining system, the coal under the end-walls will be buried by the inner dumping site, and the coal resources are normally discarded. Considering these situations, this paper describes end-wall mining system in order to recover the residual coal based on the geological conditions of coal seams at Chinese open pit coal mines. The outcome shows that coal pillar width will be larger with the increase of mining openings width. However, the coal recovery ration can be improved. To improve the recovery ratio, we should increase the mining width as much as possible when the conditions permit. According to the theoretical and numerical simulation results, the optimal mining width should be 40 m and the pillar width is 10m in the studied coal mine..
379. Hiroshi TAKAMOTO, Kikuo MATSUI, Takashi SASAOKA, Hideki SHIMADA, Jiro OYA, Rockbolting at Underground Coal Mines with Weak Strata, Proc. of the 21st International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2012.11, In longwall mining system, gateroads must be well supported in order to withstand high abutment load created by a retreating longwall face. Standing supports such as steel aches or three-piece sets (props and bars) along with the necessary struts and lagging have been traditionally used in underground coal mines in Japan due to severe strata conditions. Therefore, coal mines tried to introduce rockbolting system so as to raise productivity levels and reduce operating costs. This paper describes rockbolting technology applied to longwall gateroads in Japan and discusses rockbolting application to poor strata conditions. 　.
380. Fumihiko MATSUMOTO, Tomo MORITA, Takashi SASAOKA, Hideki SHIMADA, Long Distance Pipe Jacking Cases Using Long Life Cutter Bits in the Big Boulder and Hard Rock Ground, Proc. of NO-DIG2012 30th International Conference and Exhibition, CD-ROM, 2012.11, Mechanical pipe jacking methods are adopted for no-dig infrastructure-constructions because of reliability and safety. In especially, high density mud slurry pipe jacking method had much actual results under unique works. Nowadays these methods are desired any diversification under working surrounding. That is, “Direct-Arrival-Method to the existing underground structure”, “Sharp radical curve pipe jacking works, for example ,U･L turning curved pipe lines”, “Recovery function for un-expectation objects in the ground”, and “Rectangular (Box Culvert) pipe jacking method” are demanded.

On the other hands, the works in big cobble and hard rock layer are increasing. Under these conditions, the long life inspection of cutting bits is the most important problem. In generality, at life-time over, cutter bits are exchanged in the shield machine or outside pit with bad conditions. However, there are some troubles in these conditions. This report shows the works with long distance pipe line construction through the big cobble and hard-rock layer without replacing cutting bits. .
381. Hideki SHIMADA, Koichi ARAKI, Takashi SASAOKA, Shuichi FUJITA, Kikuo MATSUI, Dai WATANABE, Analytical Study on Prediction of Pipeline Positions by a Restoration Method, Proc. of NO-DIG2012 30th International Conference and Exhibition, CD-ROM, 2012.11, Buried pipelines that have sagged can result in damage to welded joints, disconnections and so on. Performance can also be affected with stagnation or stoppage of flow, which can lead to major secondary problems, such as caved-in roads or effluent leakage. To overcome these problems, various methods have been proposed and used for the restoration of flow performance and fixing damaged sections of underground pipelines without the need for excavation. However, there are not many methods available that do not require excavation for repairing reduced flow performance and stoppages, or pipeline damage caused by sagging, which is thought to be the major contributor to this type of damage. The authors provide a report on construction methods and examples that do not require excavation, but instead use a system of grouting for the ground, surrounding the buried pipeline, to aid in the repair of the pipeline position, which can actually improve the surrounding foundations..
382. Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Shuichi FUJITA, Akihiro HAMANAKA, Yasuhiro YOSHIDA, Property of Backfilling Injection into Tailvoid Including Lubricant Behavior for Pipe Jacking, Proc. of NO-DIG2012 30th International Conference and Exhibition, CD-ROM, 2012.11, Lubrication can effectively reduce necessary thrust for over-cutting if a discrete layer of the lubricant is maintained between the pipe and the excavated soil. The lubricant must be designed to form a layer in the surrounding soil, be pressurized to overcome underground water pressure and stabilize the over-cutting area. The lubricant should fill the complete over-cutting area to minimize surface settlement. However, it has been clarified that for a commercial lubricant to be effective, the ingredients such as sodium and potassium should be eliminated. As a result, for a lubricant not to lose its function as a support against the overburdening pressure of an over-cutting area (hereinafter referred to as tail void) and to enable a reduction in thrust, it is necessary to develop a better quality lubricant that can overcome these problems as soon as possible.

From this perspective, a lubricating material comprised of a mixture of surfactant and fly ash was developed. This report focuses attention on minimizing soil deformation. In particular, to stabilize the layer in tail void between the pipe and the excavated soil and to examine the characteristics of material attributes to avoid reduction in thrust, a variety of experiments were performed using both traditional lubricating materials and a new material mixed with fly ash. .
383. Nay Zar Lin, Takashi Sasaoka, Hideki Shimada, Matsui Kikuo, Numerical Study on an Applicable Underground Mining Method for Soft Extra-thick Coal Seams in Thailand, Journal of Engineering, 4, 2012.11, The EGAT Mae Moh Mine is the largest open pit lignite mine in Thailand and it produces lignite about 16 million tons annually. In the near future, the pit limit of the mine will be reached and underground mine will then be developed through the open pit in the depth of 400 - 600 m from the surface. However, due to the challenges for underground mining such as poor geological conditions, extra thickness (20 - 30 m) of coal seams, and weak mechanical properties of coal seams and the surrounding rock, the success possibility of underground mining and an applicable underground mining method is being investigated at the present. The paper discusses the applicability of multi-slice bord-and-pillar method for the soft extra thick coal seams in the Mae Moh mine by means of numerical analyses using the 3D finite difference code “FLAC3D”..
384. Sri MARYATI, Hideki SHIMADA, Takashi SASAOKA, Jin OKAZAKI, Akihiro HAMANAKA, Kikuo MATSUI, Soil Erosion in Indonesian Coal Mining Reclamation Area: Laboratory Studies on the Effect of Slope and Soil
, Proc. of the 7th Asian Rock Mechanics Symposium, CD-ROM, 2012.10, Coal mining companies in Indonesia are obliged to perform reclamation effort to achieve sustainability post mining land use and as much as possible to restore after mined land to the initial condition. The main factor that normally affects the reclamation success is the loss of soil fertility due to soil erosion. Soil erosion causes the loss of top soil layer which has a very important role in plant growth because this layer contains the highest concentration of organic matters and microorganisms. Soil erosion is influenced by climate properties, soil properties, topographic properties, cropping
management factor and human intervention in conservation practice factor. The aim of this research is to analyze effect of soil properties and slope to the soil erosion in Indonesia coal mining reclamation area using rainfall simulator. This research was conducted using three types of soil texture including clay, clay loam and silty clay loam; also conducted using three types of slope including 2o, 15o, and 30o. According to research result, the amount of soil loss increased with the increasing angle of slope and increasing of clay content..
385. Nay Zar LIN, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, An Investigation on Effect of Underground Mining of Extra-thick Coal Seams on Large Open-pit Slope Stability, Proc. of the 7th Asian Rock Mechanics Symposium, CD-ROM, 2012.10, The paper discusses preliminary study on the effect of underground mining on large open pit slope stability in Mae Moh coalfield in Thailand. Mae Moh mine is currently operated as open pit mine and it is the largest open pit coal mine in Thailand. In the near future, however, the final pit limit of the mine will be reached and underground mining will be developed from the final highwall in the depth of 400-600 from the surface. However, due to the adverse geological and geotechnical conditions, such as weak mechanical properties of rock, extra-thickness (20-30 m) of coal seams, and huge final pit slope,various studies for underground mine are being carried out at the present. In this study, it was investigated for appropriate distance between open pit wall and underground mine, response of pit slope in different extent of rib pillars, which is measured horizontally minimum distance from the open pit wall to underground mine,and panels, and different mining height, and the interaction between open pit slope and underground working. The investigation was conducted by means of numerical techniques using three dimensional finite difference code FLAC3D..
386. Shizuo IKUTA, Yoshishige MASUDA, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA , Study on the Cutting Techniques for Chain Saw Type Ground Improvement Machine, Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA , 599-603 , 2012.09, In the field of ground improvement works, mechanical soil mixing is an indispensable technique and is carried out using auger type machine with mixing paddles attached to the drilling rods. This type of machine excavates the soil in-situ horizontally and cannot mix the cut soil vertically. On the other hand, chain saw type machines are developed and put in use evaluating its vertically cut and mixed soil cement rectangular column body. This paper analyses the cutting mechanism of the chain saw type machine which moves horizontally while cutting and mixing the soil in-situ with cementing material. The machine is moved forward by shifting rams installed on surface and driven by a hydraulic power unit. The cutting force of each radial bit is given by the unit while the normal force is by the rams on surface. Considering the number of bits working along the face from top surface to bottom of the machine, it is essential but difficult to secure sufficient normal forces of each bit. This paper discribes type of cutting bit, bit array and cutting direction for the sake of stable indentation of the bit to the ground. .
387. Shogo KATO, Yoshiaki SAKAI, Hideki SHIMADA, Takashi SASAOKA, Akihiro HAMANAKA, Kikuo MATSUI, Masatomo ICHINOSE , Study of Improvement of Soil Properties on Revegetation in Aggregate Mining Site , Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA , 569-572, 2012.09, Natural aggregate resources have been developed to be used for production of structural concrete for national land conservation and infrastructure improvement. In Chiba prefecture which is adjacent to the Tokyo Metropolitan District where concrete is consumed in large quantities, 16,016m3 of natural aggregate resources were extracted in 2009.The national aggregate resources extracted in Chiba are mostly pit sand/gravel, and development of sand and gravel resources are accompanied by forest development which absorbs carbon dioxide. Therefore, promotion of revegetation on mined land is urgent issue in terms of suppressing global warming. Addressing this issue on Chiba prefecture which is major production area for aggregates will contribute to promotion of revegetation in aggregate mining sites in other prefectures, which face a similar issue.
It has been pointed out that the main cause of plant death in mined land is low permeability, lack of nutrients, and soil compaction caused by heavy equipment. In this consideration, we aimed to improve soil physical properties on mined land and feed nutrients necessary for plant growth by making soil conditioner from dewatered sludge, which generated in the process of washing and classifying aggregates.
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388. Sri MARYATI, Ginting Jalu KUSUMA, Hideki SHIMADA, Candra NUGRAHA, Kris PRANOTO, Nurwita SARI, SURATMAN, Takashi SASAOKA, Kikuo MATSUI , Land Capability Evaluation of Reclamation Area in Indonesia Coal Mining Using LCLP Software , Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA , 563-568, 2012.09, Land capability evaluation is process to evaluate land potency according to its capability for sustainable land uses. It is important to be implemented for management reclamation area in coal mining operation because as generally known that land is limited resource and improper land management led to decline in land productivity, so reclamation area needs to be well managed for sustainable land use.
Purpose of this study is to evaluate land capability of reclamation area in Indonesia coal mining. The required data for land capability evaluation are climate properties, slope, erosion risk, soil properties, and natural hazard risk. This process consist of collecting land characteristic data include, soil properties, topographic properties, erosion risk, flood risk and landslide risk; soil laboratory analysis; data input and analysis using Land Classification and Land Use Planning (LCLP) software; land capability classification using LCLP.
Land capability analysis in this study is carried out using LCLP software. LCLP is software to classify land and to generate new map according to the class of land capability. As open source software, it is possible to modify parameters for analysis according to data availability and purpose of the study. The result of this study is categorized the study area as land can be cultivated which is varying from class II, III and IV based on land characteristic and limitation factor.
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389. Akihiro HAMANAKA, Sri MARYATI, Jin OKAZAKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI , The Experimental Study for Prediction of Soil Erosion in the Rehabilitation Area of Indonesia Coal Mine , Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA , 557-562, 2012.09, Indonesia produces almost of coal resources by surface mining and some environmental impacts can be expected. Soil erosion is one of an important factor among these impacts to monitor and/or manage rehabilitation after the mining operation has finished. Therefore, the condition of soil erosion in the post mining surface area has to be estimated accurately in order to succeed rehabilitation. As one of an efficient method for prediction of soil loss, the Universal Soil Loss Equation (USLE), as modified for forestlands by Dissmeyer and Foster (1984), is the most widely used method of predicting soil loss in forestry. However, when considering the application of this equation in post mining surface area, a sufficient consideration is needed because the condition of these areas is very different from that of forestry.
In this study, the compering investigation between the results from laboratory tests and the results from USLE was conducted in order to predict soil loss in the mining field
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390. PURWANTO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Takahiro FUNATSU, Ridho WATTIMENA, Suseno KRAMADIBRATA, Banbang TRISETYO , Fundamental Study on Support System at Cibaliung Underground Gold Mine, Indonesia , Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA , 487-490 , 2012.09, Geotechnical information is a key for underground design. The most important parameters are rock mass strength, geological structures, main stress and strain, rock mass classification, discontinuities, etc. All of these may have impact on underground stability, if some are suitable, and only just one is troubled, it can be due to instability in the underground.
The purposes of this study are to classify the rock mass and to introduced the support system in cibaliung underground gold mine based on the rock mass classification. The characteristics of some geotechnical aspects of Cikoneng and Cibitung area are shown in this paper. Rock mass classification is measured, and the difference between both locations presented as a preliminary study for the next further research. Recommendation of support system policy of Cibaliung underground gold mine which compared to Pongkor underground gold mine also discussed in this paper.
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391. Nay Zar LIN, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Numerical Analysis of Interaction Effects in Double Extra-thick Coal Seams Mining , Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA , 421-426, 2012.09, The interaction effects in multi-seam mining depends on many factors such as local geological and geotechnical environment, mine layout, seam sequencing, and mining method employed. The paper discusses preliminary study on the interaction effects in underground mining of double extra-thick coal seams in Mae Moh coalfield in Thailand. The Mae Moh mine is currently operated as open pit mine by EGAT (Electricity Generating Authority of Thailand) and it is the largest open-pit lignite mine in Thailand. In the near future, the final pit limit of the mine will be reached and underground mining will be commenced from the final highwall in the depth of 400-600 m from the surface. However, due to the problems such as poor geological and geotechnical conditions, extra-thickness (20-30 m) of the coal seams and huge final pit slope, success probability for underground mine are being evaluated at the present. In the paper, it was discussed the ground response and possible interaction effects in the double extra-thick seams mining by means of numerical analyses using three dimensional finite difference code FLAC3D. .
392. Hikaru SHIMADA, Yanlong CHEN, Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI , Application of Highwall Mining System to Recover Residual Coal in End-wall , Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA , 341-346, 2012.09, At open pit coal mines, a large amount of coal is left around the end-walls due to the stability of slope, mining boundary, and so on. In order to increase coal recovery of open pit coal mines ,the application of a highwall mining system for residual coal around the end-walls is proposed. This mining method can be extracted the coals abandoned around end-walls efficiently. However, in order to introduce this mining system to open pit coal mines safely and efficiently, the adequate mining design considering not only stability of end-walls but also coal recovery ratio has to be investigated.
This paper discusses the applicability of a highwall mining system for recovering plenty of coal left around the end-walls and its appropriate design by means of numerical analysis.
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393. Mingwei ZHANG, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI , Application of Discrete Wavelet Transform in De-noising Processing of Remote Blasting Waves , Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA , 335-340, 2012.09, Wavelet analysis, as the typical represent of time-frequency analysis technique, has been extensively applied to vibration signal analysis, which is also a vital research subject in signal de-noising field. In this article, discrete wavelet transform (DWT) is used to analyze the weak remote blasting signals and extract small features, and it is also applied emphatically in de-noising processing of seismic waves based on the theory of wavelet analysis. The optimal selection of wavelet function and existing practical problems are emphasized with amounts of waveforms aiming to obtain the excellent blasting signals. The results indicate that wavelet analysis has advantages on de-noising processing to a certain extent, and it can make the signal to noise ratio (SNR) enhanced. The value of remote blasting waves can be used more effectively..
394. Yanlong CHEN, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI , Extraction Technology and Pillar Design Analysis of End-wall Mining System in China , Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA , 323-328, 2012.09, A great deal of coal will be left under the final end-walls in Chinese open pit mines because of lower slope angle in shovel-truck mining technology system and larger mining depth. In traditional surface mining system, the coal under the end-walls will be buried by the inner dumping site, and the coal resources are normally discarded. Considering these situations, this paper describes end-wall mining system in order to recover the residual coal based on the geological conditions of coal seams at Chinese open pit coal mines. The mining system can improve economic benefits by exploiting haulage and ventilation roadways from the exposed position of coal seams, and utilizing the existing transportation systems. In order to investigate the pillar design methodology in end-wall mining system, several empirical formulas and methods were discussed based on the actual geological mechanical properties of coal and rock in Chinese open pit mine. The outcome shows that the coal pillar width calculated by Salamon formula may serve as an important reference for pillar design in end-wall mining system. According to the theoretical and numerical simulation results, end-wall mining system can increase the coal recovery from residual coal resources around end-wall and reduce the effect of underground mining operation on slope stability. .
395. Donghua ZHANG, Ryo YAMAMOTO, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Kikuo MATSUI, Fundamental Study on Formation of Dumping Piles at Open Pit Mine, Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA, 591-594, 2012.09, Dumping areas represent a significant investment and a long-term liability in the form of a potential source of pollution or stability hazard. Now, the failure of dumping area occurs frequently in the open pit mines. Therefore, greater effort must be paid for design and formation of appropriate dumping area to mitigate environmental effects and promote long-term reclamation. However, the systematic researches on the stability of dumping area are quite few.
In order to establish the guidelines for the appropriate design of dumping site, our research group is conducting a series of fundamental studies.
First of all, the field investigation was conducted in Heidaigou open pit mine of China to understand the current dumping system and its conditions and problems. Based on the results of field investigation, a series of laboratory tests were conducted to understand the mechanism of forming dumping piles under different conditions.
This paper describes the overview of field investigation in Heidaigou mine and discusses the formation of dumping piles under different conditions based on the results of a series of laboratory tests.
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396. Hiroshi TAKAMOTO, Jiro OYA, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA , Technical Problems on Development of Underground Coal Mines in Indonesia, Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA, 579-582 , 2012.09, Indonesia produced 306 Mt of saleable coal in 2010 which was mined by almost 100% of surface mining method. Rapid increase in production by surface mining year by year has brought strong concerns of sustainable supply ability of coal with current quality level in future, due to deepening mining location with increasing stripping ratio, decreasing coal reserve with high quality in the currently operating mines and constraints on development of surface mine by environmental impact. Thus, development of underground coal mines has been expected in Indonesia recently. However, there are only a few underground coal mines operating with small scale at present due to several technical problems for development of underground coal mines such as weak roof and floor conditions, coal quality being likely to cause spontaneous combustion, less stability of coal seam thickness and so on.
This paper discusses the measures to overcome the technical problems based on the underground mining technology in Japan.
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397. Takashi SENDA, Yasutaka MAEDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Studies on Surrounding Soil during Construction Using the Deep Pipe Jacking Method in the Deep Strata , Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA, 467-470, 2012.09, In Japan when urban infrastructures need to be constructed, the difficulty of utilizing the ground or shallow strata will necessarily lead to the more frequent use of the deep strata.
The common construction methods are open-cut, pipe jacking, and shield methods.
In recent years a new pipe jacking method has been established that can be adapted to 20 m below the ground or more. Using the method, the drivage machine and the jacking pipe continue to move an underground until the completion of the driving. Therefore an over-cutting area (so-called tail-void) must be formed to lower the friction between the ground and the pipe. The tail-void is filled with lubrications. However, because the stress release of the ground continues to advance when the tail-void is formed, there are some challenges required to cope with the stability of the surrounding ground. In order to utilize the pipe jacking method in the deeper strata layers, the theory, analysis and installation of tail-void have to be systemized, and such systematic data must be stored.
Therefore, the conditions of tail-void in the deep pipe jacking method are discussed using numerical analyses.
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398. Ginting Jalu KUSUMA, Hideki SHIMADA, Candra NUGRAHA, Akihiro HAMANAKA, Takashi SASAOKA, Kikuo MATSUI, Rudy Sayoga GAUTAMA, Budi SULISTIANTO, Study on Co-placement of Coal Combustion Ash-coal Waste Rock for Minimizing Acid Mine Drainage Generation: A Preliminary Result of Field Column Test Experiment , Proc. of International Symposium on Earth Science and Technology 2012, Bandung INDONESIA, 257-262, 2012.09, As the increasing of coal utilization, requirement on re-utilization of coal combustion ash (CCA) was also increased. In the mine site, having considered the some advantage characteristics of CCA, co-placement with overburden rock in the overburden dumping area of mining site is to be one potential alternative to be implemented. In this paper, the potential use of CCA from a specific site power plant as a layer in the dry cover system was studied. According to the quality of discharged water and measured-oxygen concentration within the column under the influences of local climate, the experiment indicates some advantages of CCA utilization such as higher on pH, alkalinity and higher capacity to prevent oxygen diffusion into the column. These results offer a promising technique to re-utilize CCA in controlling acid mine drainage (AMD) generation from potentially acid forming overburden rock. .
399. Several Consideration on Construction by Using Pipe Jacking at Deep Strata
Proc. of the 33rd West Japan Symposium on Rock Engineering, pp.59-64, August 2012
Yasutaka MAEDA, Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Tomo MORITA, Masatomo ICHINOSE
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400. Study on Fundamental Characteristics of Backfilling Material by Pipe Roof Jacking Method
Proc. of the 33rd West Japan Symposium on Rock Engineering, pp.65-68, August 2012
Sota IMAHASE, Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Toru SATO, Masatomo ICHINOSE, Yasuhiro YOSHIDA
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401. Study on Stability of Surrounding Soil Using Pipe Roof Method by Pipe Jacking
Proc. of the 33rd West Japan Symposium on Rock Engineering, pp.51-54, August 2012
Shunya AOYAMA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Toru SATO, Masatomo ICHINOSE
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402. Study on Impact Resistance and Abrasibity of Cutter Bit for Shield Machine
Proc. of the 33rd West Japan Symposium on Rock Engineering, pp.47-50, August 2012
Keisuke TAKEUCHI, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Katsuhiko HAYASHI, Makoto SASAKI
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403. Takashi SASAOKA, Shizuo IKUTA, Hideki SHIMADA, Akihiro HAMANAKA, Hiroshi TAKAMOTO, Kikuo MATSUI , Application of Chain Conveyor Cutter (CCC) to Highwall Mining System, Proc. of 31st International Conference on Ground Control in Mining, Morgantown, WV, USA , CD-ROM, 2012.07, Chain Conveyor Cutter (CCC) is a chainsaw-type machine and originally developed for the construction of underground walls and/or ground improvements. CCC was developed from the accumulated technology of coal mining, combining the cutting technology of a shearer and the fuctions of chain conveyor. The CCC can cut harder soils and soft rocks, and vertically mixes the cut soils/rocks with cementing material selected through the discharging port installed at the bottom of the machine. In Indonesia, highwall mining trials have already been conducted in several coal mines. However, full-scale and regular operations have not been done yet due to the ground and machine control issues from their geological conditions. In order to overcome these problems, the application of CCC to highwall mining systems was proposed, and its applicability and technical issues to be solved were investigated in this research. This paper discribes the characteristics of CCC system and discusses the application of CCC to highwall mining systems. .
404. Ginting Jalu KUSUMA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Candra NUGRAHA, Rudy Sayoga GAUTAMA, Budi SULISTIANTO , An Evaluation on the Physical and Chemical Composition of Coal Combustion Ash and Its Co-placement with Coal Mine Waste Rock
, Journal of Environmental Protection, 3, 7, 589-596, 2012.07, In the last few decades, the utilization of coal to generate electricity was rapidly increasing. Consequently, the production of coal combustion ash (CCA) as a by-product of coal utilization as primary energy sources was increased. The physical and geochemical characteristics of CCA were site-specific which determined by both inherent coal-source quality and combustion condition. The physical, chemical and mineralogical characteristic of a coal combustion ash (CCA) from a site specific power plant was investigated and the leachate characteristic of some scenario on the co-placement the CCA with coal-mine waste rock was evaluated. The physical properties such as specific gravity, dry density, porosity and particle size distribution were determined. From the chemical Characterization it is found that the CCA samples are enriched predominantly in silica (SiO2), alumina (Al2O3) and iron oxides (Fe2O3), along with a little amount of CaO, and fall under the Class C fly ash category. In addition, the mineral phases identified in the samples were quartz, mullite, magnetite, and hematite. Co-placement experiment with mudstone waste rock shows that the CCA, though it has limited contribution to the decreasing permeability, has important contributed to increase the quality of leachate through releasing higher alkalinity. Moreover, addition of CCA did not affect to the increase of the trace metal element in the leachate. Hence, utilization of CCA by co-placement with coal mine waste rock in the dumping area is visible to be implemented. .
405. Hideki SHIMADA, Ginting J. KUSUMA, Takashi SASAOKA, Akihiro HAMANAKA, Kikuo MATSUI, Budi SULISTIANTO , Dump Site Covering to Control Acid Mine Drainage in Indonesian Open-cut Coal Mine, Proceedings of 6th International Conference and Exhibition on Mass Mining, CD-ROM, 2012.06, Waste dump of sulfide containing rock is one of potential acid mine drainage source since it was content huge amount of ready oxidized sulfide mineral due to its exposure to air and water. Application of dry cover system is counted as one of the best practices in a sustainable prevention of acid mine drainage of the waste rock dump at surface coal mine. However, the implementation of dry cover system in the field practice has faced several obstacles due to the limited amount of cover-materials. The nature of geological condition is to be the most control one while the other is mining method and equipment size should be taken into consideration to develop proper covering system. This paper describes the acid generation mechanism and its control, application of cover system and its problem being faced in Indonesian coal mine, and discusses the preliminary laboratory result of multi-layer cover system and proposed new covering strategy in attempt to encounter the problem..
406. Takashi Sasaoka, Hideki Shimada, Akihiro Hamanaka, Hiroshi Takamoto, Kikuo Matsui, Suseno Kramadibrata , Overview of Ground Control Research for Underground Coal Mines in Indonesia, Proceedings of 6th International Conference and Exhibition on Mass Mining, CD-ROM, 2012.06, Indonesia is the second largest coal exporter to Japan, accounting for about 30 M tons annually. They produced about 250 M tons in 2010, over 99% of which being from open-cut mines. However, the conditions of surface mining are becoming worse each year: the stripping ratio is increasing, approaching the economic ratio and the infrastructure for coal transportation from inland mining areas is insufficient for such intense mining operations. To meet the demand for coal in Indonesia and the rest of the world, underground mines have to be developed. At present, there are only five small underground mines, three of which are old and the other two have only recently begun mining operations. However, severe ground control problems have been occurring regularly, roof falls in particular. Unfortunately, mining engineers and/or miners in this mine do not have a lot of experiences, expertise and know-how concerning the operations of underground coal mines.

Under these situations, since 2001, Japan has started a ‘five-year plan for coal technology transfer’ to fill Japan’s moral obligation as the largest coal importer in the world. The research team was organized and conducted on-site investigation in order to develop new underground coal mine in Indonesia.

This paper describes the geotechnical issues for development of underground coal mine in Indonesia.
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407. Yu QING, Shizuo IKUTA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Application of Underground Continuous Impervious Curtain to Shaft Lining Rupture Treatment in Eastern Chinese Coal Mines, Memoirs of the Faculty of Engineering, Kyushu University , 72, 2, 29-53, 2012.06, Many problems result when coal mine shafts are built in complicated geological conditions and serious shaft lining ruptures have often occurred in the eastern part of China since 1987. Several types of treatment methods are used for shaft lining reinforcement, such as the grouting method, sets of wall reinforcement method and stress-relief slot method; based on analysis of these methods and the mechanism of shaft lining rupture, a new treatment method is proposed for shaft lining treatment with an underground continuous impervious curtain (UCIC). In this study, the mechanism of shaft lining rupture was analyzed using numerical simulation, the current treatment methods were also analyzed, and then the various conditions of the UCIC built around the shaft lining were analyzed and the effect of the UCIC method was discussed. The results show that the lowering of water level in an aquifer can result in shaft lining rupture, and the new method has the effect to reduce and transform the stress concentration, and is able to reinforce shaft lining rupture in actual application. .
408. Ginting Jalu KUSUMA，Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Candra NUGRAHA, Rudy Sayoga GAUTAMA, Budi SULISTIANTO , Physical and Geochemical Characteristics of Coal Mine Overburden Dump Related to Acid Mine Drainage Generatio, Memoirs of the Faculty of Engineering, Kyushu University , 72, 2, 23-28, 2012.06, The presence of water and oxygen are some of the important factors influencing the oxidation rate of sulfide minerals within overburden dumps. In overburden dumps, the availability of water and oxygen is strongly controlled by the physical structure of the dump, as well as the surface climate and geochemical reaction within the dump.
In this study, a series of field investigations, physical and geochemical laboratory characterization were conducted in order to evaluate internal physical structure and geochemical characteristics of coal mine overburden dumps. The study found that a multi bench structure consisting of 10 m height of inter-fingered slope layer is formed as the effect of the end dumping technique. In addition, overburden material was characterized to have high clay content and low durable characteristic when interact with water. These characteristics couple with mining equipment traffic has result in a compacted layer on the surface of each bench lift which then controls the groundwater flow path within the dumps. Moreover, the geochemical characteristics were random, alternating among potentially acid forming and non acid forming materials within the inter-fingered layer. Those alternate geochemical characteristics may control acidification-neutralization reaction of infiltrated water, precipitation of secondary mineral and determines the quality of the overburden dump drainage, subsequently. The internal structure formed and the spatial heterogeneity of geochemical characteristics in overburden dump controls the acid drainage inhibition process within the dumps.
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409. Srinivasulu TADISETTY, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI , Development of Wireless TR System for Improving Efficiency of Buried Crude Oil Pipeline Operations , Journal of the Instrument Society of India, 42, 2, 71-74, 2012.06.
410. Shizuo Ikuta, Kikuo Matsui, Hideki Shimada, Takashi Sasaoka, Chain Conveyor Cutter Wall for Mine Water Management, Proceedings of the 10th international conference on mining, materials and petroleum engineering"Science and Technologies Towards 2012" and the 6th International Conference on Earth Resources Technology, CD-ROM, 2012.05.
411. Shinji Matsumoto, Koh Hiroto, Ginting J. Kusuma, Hideki Shimada, Takashi Sasaoka, Kikuo Matsui , Study on Design of Dumping Site for Control of AMD at Maamba Coal Mine, Zambia, Proceedings of the 10th international conference on mining, materials and petroleum engineering"Science and Technologies Towards 2012" and the 6th International Conference on Earth Resources Technology, CD-ROM, 2012.05.
412. Takashi Sasaoka, Hideki Shimada, Hiroshi Takamoto, Akihiro Hamanaka, Kikuo Matsui, Jiro Oya , Applicability of rock bolting system and ground control management under weak strata in Indonesia, Proceedings of 7th International Symposium Rockbolting and Rock Mechanics in Mining, 385-398, 2012.05, A new underground mining trial has been conducted in East Kalimantan, Indonesia in order to investigate the possibility of technical challenges of underground coal mine under weak geological condition, especially the application and management of rock bolting system. The application of rock bolting system for Indonesian underground coal mines had been attempted for a long time, but they had not been success yet. In this mining trial, even though roof falls have occurred within the working area, the bolted roadways showed a reasonable stability over time. Moreover, the comprehensive monitoring system has been installed in order to monitor the ground behaviour and its characteristics. This application of comprehensive monitoring system has enhanced the ability to increase the level of support and to react to changing/deteriorating conditions. In addition, monitoring data has allowed a quantitative assessment for future full scale mining.
This paper discusses the applicability of roof bolting system and its ground control management under weak strata condition in Indonesia by means of site investigations and numerical analysis.
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413. Hiroshi Takamoto, Jiro Oya, Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Surface subsidence induced by underground coal mining in Indonesia, Proceedings of 7th International Sympoisum Rockbolting and Rock Mechanics in Mininig, 373-384, 2012.05, In Indonesia, it is expected to develop underground coal mining technology and increase underground mines, since rapid increase in coal production by surface mining recently has brought strong concerns of sustainable supply of coal with current quality level in future. However, there is a lack of study on surface subsidence induced by underground mining, although understanding surface subsidence is most important with assessment of environmental impact for developing underground mines kin Indonesia.
This paper describes the measured data of the surface subsidence over a longwall in an underground mine which is located in East Kaimantan, Indonesia and analyzes the resulted subsidence.
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414. Kikuo Matsui, Hiroshi Takamoto, Takashi Sasaoka, Hideki Shimada, Rockbolting Trials in Underground Coal Mines in Japan, Proceedings of 7th International Sympoisum Rockbolting and Rock Mechanics in Mininig, 233-242, 2012.05, In longwall mining system, gateroads must be well supported in order to withstand high abutment load created by a retreating longwall face. Standing supports such as steel aches or three-piece sets (props and bars) along with the necessary struts and lagging have been traditionally used in underground coal mines in Japan due to severe strata conditions. Therefore, coal mines tried to introduce rockbolting support system so as to raise productivity levels and reduce operating costs.
This paper describes Japanese underground mining system, an overview of the rockbolting technology that was applied to longwall gateroads in Japan and discusses some problems involved in using bolting.
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415. Nay Zar Lin, Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Study on Application of Rockbolt Reinforcement System for Coal Mine Roadways in Thailand, Proc. of the 10th international conference on mining, materials and petroleum engineering"Science and Technologies Towards 2012" and the 6th International Conference on Earth Resources Technology , CD-ROM, 2012.05.
416. Donghua ZHANG, Ryo YAMAMOTO, Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Kikuo MATSUI, Fundamental Study on Formation of Dumping Pile at Surface Coal Mine　, Proc. of International Symposium on Earth Science and Technology 2011　, pp.509-512, 2011.12.
417. Shizuo IKUTA, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA, Study on the Application of Chain Conveyor Cutter to Environmental Protection and Disaster Prevention　, Proc. of International Symposium on Earth Science and Technology 2011　, pp.495-500, 2011.12.
418. Akihiro HAMANAKA, Ginting Jalu KUSUMA, Candra NUGRAHA, Takashi SASAOKA, Hideki SHIMADA, Ikuo MIYAJIMA, Shuichi FUJITA, Kikuo MATSU, Fundamental Study on Application of Paper Mulberry for Rehabilitation of Surface Coal Mine in Indonesia　, Proc. of International Symposium on Earth Science and Technology 2011　, pp.419-422, 2011.12.
419. Purwanto, Ridho Kresna WATTIMENA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Roughness Effect on Shear Strength　, Proc. of International Symposium on Earth Science and Technology 2011　, pp.215-218, 2011.12.
420. Yoshiaki SAKAI, Shogo KATO, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Yasuhiro SATO, Masatomo ICHINOSE, Study on an Optimum Slope Designing and Mining Method at Open-pit　Aggregate Mines with Soft Sand Layers　, Proc. of International Symposium on Earth Science and Technology 2011　, pp.189-194, 2011.12.
421. Ginting Jalu KUSUMA, Koh HIROTO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Rudy Sayoga GAUTAMA, Budi SULISTIANTO, Laboratory Study on Co-Placement of Coal Combustion Ash-Coal Waste Rock for Minimizing Acid Mine Drainage Generation in the Waste Rock Dump　, Proc. of International Symposium on Earth Science and Technology 2011　, pp.141-144, 2011.12.
422. Koh HIROTO, Ginting Jalu KUSUMA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Rudy Sayoga GAUTAMA, Budi SULISTIANTO, Effect of Mineralogical Transformations on AMD Prevention at Waste Rock Dumping Site, Proc. of International Symposium on Earth Science and Technology 2011　, pp.137-140, 2011.12.
423. Yanlong CHEN, Hideki SHIMADA, Takashi SASAOKA and Kikuo MATSUI, Application of Highwall Mining System for Recovering Coal from End-walls under Thick Cover　, Proc. of International Symposium on Earth Science and Technology 2011　, pp.107-112, 2011.12.
424. Hiroshi TAKAMOTO, Toshinori SAKAGUCHI, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Evaluation of the Risk to Spontaneous Combustion of Coal in Underground Mines in Indonesia　, Proc. of International Symposium on Earth Science and Technology 2011, pp.513-516, 2011.12.
425. Sugeng WAHYUDI, Hideki SHIMADA, Takayuki SASAKI, Takashi SASAOKA, Shiro KUBOTA, Tei SABURI, Yuji OGATA, Kikuo MATSUI, Analytical Calculation of Ground Vibration-induced Rock Damage under Blasting Excavation on Limestone Using the Technique Based on Swedish Method　, Proc. of International Symposium on Earth Science and Technology 2011, pp.201-208, 2011.12.
426. Sri MARYATI, Hideki SHIMADA, Kris PRANOTO, Aspin PAGALLUNGAN, Nurwita SARI, Akihiro HAMANAKA, Takashi SASAOKA, Kikuo MATSUI, Building Geodatabase for Environmental Monitoring of Coal Mining in Indonesia　, Proc. of International Symposium on Earth Science and Technology 2011, pp.195-200, 2011.12.
427. Mingwei ZHANG, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Linming DOU, A New Method to Evaluate the Risk of Rock Burst in Deep Underground Mines, Proc. of International Symposium on Earth Science and Technology 2011, pp.125-130, 2011.12.
428. Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Fumihiko MATSUMOTO, Tomo MORITA, Practical Study of Behavior on Thrust and Settlement of Surrounding Soil in Deep Pipe Jacking Method, Proc. of International Symposium on Earth Science and Technology 2011, pp.89-94, 2011.12.
429. Practical Study of Thrust and Behavior of Soil on Pipe Roof Pipe Jacking Method. Proc. of 22nd Symposium on Japan Society for Trenchless Technology, pp.113-118, November 2010. Shunya AOYAMA, Toru SATO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI　.
430. Study of Behavior on Thrust and Settlement of Surrounding Soil in Deep Pipe Jacking Method. Proc. of 22nd Symposium on Japan Society for Trenchless Technology, pp.107-112, November 2010. Yasutaka MAEDA, Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI　.
431. Akihiro HAMANAKA, Nay Zar LIN, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Hiroshi TAKAMOTO, Eco Underground Coal Mining Systems for Ultra-Thick Coal Seam Utilisation of Flyash and CO2 Storage　, Proc. of 2nd International Future Mining Conference 2011, Sydney AUSTRALIA　, 2011.11.
432. Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Hiroshi TAKAMOTO, Application of Punch Mining System to Indonesian Coal Mining Industry, Proc. of the 20th International Symposium on Mine Planning and Equipment Selection , CD-ROM, 2011.10.
433. Koh HIROTO, Ginting Jalu KUSUMA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Study on the Characteristics and Mechanism of Rock and Water Contamination at Maamba Collieries, Proc. of the 20th International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2011.10.
434. Yu QING, Takashi SASAOKA, Hideki SHIMADA, Shizuo IKUTA, Kikuo MATSUI, Numerical Analysis on Shaft Lining Rupture in Alluvium during Aquifer Drainage and Solution Method, Proc. of the 20th International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2011.10.
435. Hideki SHIMADA, Ginting Jalu KUSUMA, Koh HIROTO, Takashi SASAOKA, Akihiro HAMANAKA, Hiroshi TAKAMOTO, Shuichi FUJITA, Kikuo MATSUI, Laboratory Evaluation of Multi-Layer Cover to Control Acid Mine Drainage in the Coal Mine Waste Rock Dump, Proc. of the 20th International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2011.10.
436. CD-ROM.
437. Takashi SASAOKA, Hideki SHIMADA, Akihiro HAMANAKA, Kikuo MATSUI, Study on Blast Vibration and Size of Fragmentation at Limestone Quarry, Proc. of the 20th International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2011.10.
438. Dongha ZHANG, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Study on Safety and Recovery Rate of Coal Mining Industry in China, Proc. of the 20th International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2011.10.
439. Hiroshi TAKAMOTO, Takashi MATSUDA, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Improvement of Underground Transportation Systems at Ikeshima Colliery in Japan, Proc. of the 20th International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2011.10.
440. Hiroshi TAKAMOTO, Takashi MATSUDA, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Improvement of Underground Transportation Systems at Ikeshima Colliery in Japan, Proc. of the 20th International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2011.10.
441. Nay Zar LIN, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Study on Application of Multi-slice Longwall Mining System for Extra-Thick Coal Seams under Weak Geological Condition, Proc. of the 20th International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2011.10.
442. Shizuo IKUTA, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA, Construction of Subsurface Barriers for Controlling Contaminated Ground Water Flow at Mine Disposal Sites Using Chain Conveyor Cutter (CCC), Proc. of the 20th International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2011.10.
443. Yanlong CHEN, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Study on an extraction technology for residual coal around end-slopes, Proc. of the 20th International Symposium on Mine Planning and Equipment Selection, CD-ROM, 2011.10.
444. Ginting Jalu KUSUMA, Koh HIROTO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI Rudy Sayoga GAUTAMA, Budi SULISTIANTO, Leachate Characteristic of Sulfidic Coal Mine Waste Rock Due to Various Water Pouring Interval, Proc. of 12th International Congress on Rock Mechanics, Beijing CHINA　, CD-ROM, 2011.10.
445. Yu QING, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Analytical Study on Underground Continuous Impervious Curtain for Shaft Lining Treatment at Eastern Chinese Coal Mines, Proc. of 12th International Congress on Rock Mechanics, Beijing CHINA　, CD-ROM, 2011.10.
446. Application of chain conveyor cutter for reinforcement of shaft lining at clao mine in Eastern China.
447. Study on soil and water pollution in Maamba coal mine, Zambia.
448. Application of punch mining system in Indonesian coal mine.
449. Study on ground behavior of pipe-roof construction using pipe-jacking method.
450. Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Akihiro Hamanaka, Nay Zar Lin, Hiroshi Takamoto, Study on Eco-Friendly Underground Mining System for Ultra-Thick Coal Semas in Thailand, Proceeding of 30th International Conference on Ground Control in Mining, 341-350, 2011.07.
451. Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Akihiro Hamanaka, Nay Zar Lin, Hiroshi Takamoto, Study on Eco-Friendly Underground Mining System for Ultra-Thick Coal Semas in Thailand, Proceeding of 30th International Conference on Ground Control in Mining, 341-350, 2011.07.
452. Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Akihiro Hamanaka, Nay Zar Lin, Hiroshi Takamoto, Study on Eco-Friendly Underground Mining System for Ultra-Thick Coal Semas in Thailand, Proceeding of 30th International Conference on Ground Control in Mining, 341-350, 2011.07.
453. Hiroshi TAKAMOTO, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Masatomo ICHINOSE , Effect of Mine Water on the Stability of Underground Coal Mine Roadways, Proc. of 5th International Conference on Sustainable Development in the Minerals Industry, Aachen GERMANY , 645-652, 2011.06.
454. Hideki SHIMADA, Ginting Jalu KUSUMA, Koh HIROTO, Takashi SASAOKA, Akihiro HAMANAKA, Hiroshi TAKAMOTO, Kikuo MATSUI , Study on Multi Layer Covering Systems of Non Acid Forming and Potentially Acid Forming of Coal Mine Waste Rock to Control Acid Mine Drainage, Proc. of 5th International Conference on Sustainable Development in the Minerals Industry, Aachen GERMANY , 227-236, 2011.06.
455. Shizuo IKUTA, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA , Control of Contaminated Water from Disposal Site near Seashore Using Chain Conveyor Cutter , Proc. of 14th Conference on Environment and Mineral Processing, Ostrava CZECH , Vol.2, 451-457, 2011.06.
456. Hideki SHIMADA, Jan GOTTFRIED, Akihiro HAMANAKA, Takashi SASAOKA, Yasuhiro YOSHIDA, Shuichi FUJITA, Kikuo MATSUI , Application of Injection Material for Offshore Structures Using Flyash-surfactant Mixtures , Proc. of 14th Conference on Environment and Mineral Processing, Ostrava CZECH , Vol.2, 399-406, 2011.06.
457. Takashi SASAOKA, Hideki SHIMADA, Akiriho HAMANAKA, Kikuo MATSUI, Jan GOTTFRIED , Utilization of Flyash for Barrier Layer Materials in Radioactive Waste Disposal , Proc. of 14th Conference on Environment and Mineral Processing, Ostrava CZECH , Vol.2, 407-413, 2011.06.
458. Yoshiaki SAKAI, Takashi SASAOKA, Hideki SHIMADA, Shuichi FUJITA, Masatomo ICHINOSE, Kikuo MATSUI , Present Situation and Future Prospect of Environmental and Measures in Surburban Aggregate Mines in Japan, Proc. of 14th Conference on Environment and Mineral Processing, Ostrava CZECH , Vol.2, 177-191, 2011.06.
459. Hideki Shimada, Takashi Sasaoka, Yasuhiro Yoshida, Shuichi Fujita, Akihiro Hamanaka, Kikuo Matsui , Development of Construction Material Using Flyash-Surfactant Mixtures for an Ocean Floor, Proceedings of 5th International Workshop and Conference on Erath Resources Technology, 73-76, 2011.05.
460. Takashi Sasaoka, Hideki Shimada, Akihiro Hamanaka, Kikuo Matsui, Masatomo Ichinose, Study on Control of Rock Fragmentation at Limestone Quarry, Proceedings of 5th International Workshop and Conference on Earth Resources Technology, 58-61, 2011.05.
461. Sugeng WAHYUDI, Hideki SHIMADA, Ganda Mahirot SIMANGUNSONG, Takashi SASAOKA, Kikuo MATSUI, Suseno KRAMADIBRATA, Budi SULISTIANTO , A Review Study of Predictive Model Blast Vibration Attenuation Equation by Using Neural Network as an Evaluator , International Journal of Mining, Reclamation and Environment, 25, 1, 69-85, 2011.03.
462. Yu QING, Shunsuke YAMAGUCHI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Effect of Underground Continuous Improvement Curtain on Shaft Lining Treatment at Eastern Chinese Coal Mines , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN , 47-50, 2010.12.
463. Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Hiroshi TAKAMOTO, Pinyo MEECHUMNA, Pipat LAOWATTANABANDIT , Application of Multi-pass Highwall Mining System with Stowing System at Surface Coal Mine in Thailand , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN , 57-60, 2010.12.
464. Yanlong CHEN, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI , Research in Open-pit Mining Technology for Residual Coal of End Slopes , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN , 61-66, 2010.12.
465. Sugeng WAHYUDI, Hideki SHIMADA, Ganda Marihot SIMANGUNSONG, Takashi SASAOKA, Kikuo MATSUI, Suseno KRAMADIBRATA, Budi SULISTIANTO, Singgih SAPTONO , Influence of Geological Condition on Parameter of Blast Vibration Attenuation Equatio , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN , 193-196, 2010.12.
466. Toru SATO, Tony SUZUKI, Nozimu HIRAISHI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI , Effect of Surrounding Soil by the Pipe Roof Method Using Pipe Jacking Method , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN , 203-208, 2010.12.
467. Yoshiaki SAKAI, Hiroaki TANAKA, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Shogo KATO, Yasuhiro SATO, Masatomo ICHINOSE, Study on the Slope Stability in Relation to Mining Development in the Suburbs of an Urban Area , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN , 221-226, 2010.12.
468. Ginting Jalu KUSUMA, Koh HIRITO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Rudy Sayoga GAUTAMA, Budi SULISTIANTO , Study on Acid Mine Drainage Release Behavior of Coal Mine Waste Rock under Different Water Pouring Interval in Laboratory , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN , 247-252, 2010.12.
469. Hiroshi TAKAMOTO, Toshinori SAKAGUCHI, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI , Improvement of Coal Recovery by Underground Semi-mechanized Longwall Mining System in Indonesia , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN , 513-520, 2010.12.
470. Shizuo IKUTA, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA , Development of Chain Conveyor Cutter , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN , 521-526, 2010.12.
471. Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Fumihiko MATSUMOTO, Tomo MORITA, Eiji SAKAI, Effect of Thrust on Excavation by Using Pipe Jacking System in Deep Strata , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN , 527-530, 2010.12.
472. Nay Zar LIN, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI , Study on Applicable Underground Mining System for Extra Thick Coal Seams under Weak Geological Conditions in Thailand , Proc. of International Symposium on Earth Science and Technology 2010, Fukuoka JAPAN, 51-56, 2010.12.
473. Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Ginting Jalu KUSUMA, Jiro OYA, Hiroshi TAKAMOTO, Suseno KRAMADIBRATA, Budi SULISTIANT , Fundamental Study of Acid Drainage Control Using Flyash , Proc. of 19th International Symposium on Mine Planning & Equipment Selection, Fremantle AUSTRALIA , CD-ROM, 2010.12.
474. Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI , Study on Utilization of Flyash for Barrier/Buffer Materials for Radioactive Waste Disposal , Proc. of 19th International Symposium on Mine Planning & Equipment Selection, Fremantle AUSTRALIA , CD-ROM, 2010.12.
475. Yoshiaki SAKAI, Yasuhiro SATO, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA , Pleliminary Study on the Improvement of Afforestation Techniques Applied to Aggregate Mine in Japan , Proc. of 19th International Symposium on Mine Planning & Equipment Selection, Fremantle AUSTRALIA , CD-ROM, 2010.12.
476. Sugeng WAHYUDI, Hideki SHIMADA, Takashi SASAOKA, Shiro KUBOTA, Yuji OGATA, Kikuo MATSUI , Experimental Study on Rock Damage due to Blasting in Limestone Quarry , Proc. of 19th International Symposium on Mine Planning & Equipment Selection, Fremantle AUSTRALIA , CD-ROM, 2010.12.
477. Yu QING, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI , Fundamental Study on Fracturing Grouting for Shaft Lining Reinforcement at Deep Alluvium Seam in Eastern China , Proc. of 19th International Symposium on Mine Planning & Equipment Selection, Fremantle AUSTRALIA , CD-ROM, 2010.12.
478. Akihiro HAMANAKA, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Hiroshi TAKAMOTO, Pinyo MEECHUMNA, Pipat LAOWATTANABANDIT , Application of Multi Slicing Highwall Mining System with Stowing at Surface Coal Mine at Thailand , Proc. of 19th International Symposium on Mine Planning & Equipment Selection, Fremantle AUSTRALIA , CD-ROM, 2010.12.
479. Study on Relatively between the Behavior of Grouting Material in the Soil and the Deformation of the Soil with the Restoration Grouting for Pipeline Position
Proc. of 21th Symposium on Japan Society for Trenchless Technology, pp.181-188, November 2010
Masashi KOMURA, Koichi ARAKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI .
480. Examination Concerning Modeling Numerical Analysis in Various Jacking Methods with Different Digging Mechanism
Proc. of 21th Symposium on Japan Society for Trenchless Technology, pp.153-159, November 2010
Nozomu HIRAISHI, Toru SATO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI .
481. Hideki SHIMADA, Yasuhiro YOSHIDA, Koichi ARAKI, Takashi SASAOKA, Shuichi FUJITA, Kikuo MATSUI, Masuhiko IINO, Takahisa TOMII , Application of Flash Setting Material for Temporary Earthquake Disaster Restoration of Gas Pipelines Using Fly Ash Cement Mixtures , Proc. of NO-DIG2010 28th International Conference and Exhibition, Singapore SINGAPORE , CD-ROM, 2010.11.
482. Toru SATO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Tony SUZUKI , NE Water Construction by Using Japanese Pipe Jacking Machines in Singapore , Proc. of NO-DIG2010 28th International Conference and Exhibition, Singapore SINGAPORE , CD-ROM, 2010.11.
483. Masashi KOMURA, Koichi ARAKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI , Analytical Study on a Restoration Method for Pipeline Positions in Case of Clay Soil , Proc. of NO-DIG2010 28th International Conference and Exhibition, Singapore SINGAPORE , CD-ROM, 2010.11.
484. Takashi SENDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Masaya HIRAI, Tomo MORITA, Fundamental Study on the Effect of Pipe Jacking on Deeper Underground Area, Proc. of NO-DIG2010 28th International Conference and Exhibition, Singapore SINGAPORE, CD-ROM, 2010.11.
485. Effect of Construction of Underground Structures by the Pipe Roof Method Using a Pipe Jacking System on Surrounding Soil
Hideki SHIMADA, Toru SATO, Takashi SASAOKA, Kikuo MATSUI
Journal of Japan Sewage Works Association, Vol.47, No.574, pp.115-124 .
486. Sugeng WAHYUDI, Hideki SHIMADA, Takashi SASAOKA, Ganda Marihot SIMANGUNSONG, Suseno KRAMADIBRATA, Budi SULISTIANTO, Kikuo MATSUI , Influence of Geological Condition and Blasting Pattern on the Site Specific Parameters in PPV Prediction Model , Proc. of ISRM International Symposium 2010 and 6th Asian Rock Mechanics Symposium, New Delhi INDIA, CD-ROM, 2010.10.
487. Numerical Study of Box Culvert Installation by Pipe Jacking Method
Tomo MORITA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI
Journal of Japan Sewage Works Association, Vol.47, No.574, pp.115-124 .
488. Akihiro Hamanaka, Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Hiroshi Takamoto, Pinyo Meechumna, Pipat Laowattanabandit, Application of Highwall Mining System at Surface Coal Mine in Thailand, Proceedings of 29th International Conference on Ground Control in Mining, pp.304-311, 2010.07.
489. Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Hiroshi Takamoto, Geothechnical Considerations in Highwall Mining Applications in Indonesia, Proceedings of 29th International Conerence on Ground Contol in Mining, pp.312-317, 2010.07.
490. Toru SATO, Tony SUZUKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI , Effect of Drivage Behavior of Cutting Machine for Pipe Jacking System on Stability of Surrounding Soil , Proc. of Twin International Conference on Geotechnical & Geo-environmental Engineering, Seoul KOREA , CD-ROM, 2010.06.
491. Masashi KOMURA, Koichi ARAKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI , Experimental Study on a Restoration Method by Using Grouting Material for Pipeline Positions , Proc. of Twin International Conference on Geotechnical & Geo-environmental Engineering, Seoul KOREA , CD-ROM, 2010.06.
492. Yasuhiro YOSHIDA, Hideki SHIMADA, Takashi SASAOKA, Shuichi FUJITA, Kikuo MATSUI, Jan GOTTFRIED, Masuhiko IINO , Development of Flash Setting Material Using Flyash for Temporally Gas Pipeline Restoration After Earthquake Disaster , Proc. of 14th Conference on Environment and Mineral Processing, Ostrava CZECH , CD-ROM, 2010.06.
493. Kikuo Matsui, Takashi Sasaoka, Hideki Shimada, Hirofumi Furukawa, Hiroshi Takamoto, Masatomo Ichinose, Some Considerations in Underground Mining Systems for Extra Thick Coal Seams, Proc. of Third International Symposium on Mineral Resources and Mine Development, 355-368, 2010.05.
494. Masahi KOMURA, Koichi ARAKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Takahisa TOMII , Theoretical Study on a Restoration Method for Pipe Positions, Proc. of The 4th International Workshop and Conference on Earth Resources Technology , CD-ROM, 2010.05.
495. Hideki Shimada, Toru Sato, Takashi Sasaoka, Kikuo Matsui , Effect of Application of Pipe Roof Method by Using Pipe Jacking on Stability of Surrounding Soil
, Proc. of The 4th International Workshop and Conference on Earth Resources Technology , CD-ROM, 2010.05.
496. Nay Zar Lin, Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Hiroshi Takamoto, Fundamental Study on Support Requirements for Main Roadway in Underground Coal Mine, Indonesia, Proc. of The 4th International Workshop and Conference on Earth Resources Technology , CD-ROM, 2010.05.
497. Nay Zar Lin, Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Hiroshi Takamoto, Fundamental Study on Support Requirements for Main Roadway in Underground Coal Mine, Indonesia, Proc. of The 4th International Workshop and Conference on Earth Resources Technology , CD-ROM, 2010.05.
498. Akihiro Hamanaka, Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Hiroshi Takamoto, Pinyo Meechumna, Pipat Laowattanabandit , Application of Highwall Mining System at Surface Coal Mine in Thailand, Proc. of The 4th International Workshop and Conference on Earth Resources Technology, CD-ROM, 2010.05.
499. Masashi KOMURA, Koichi ARAKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Takahisa TOMII , Chemically Restoring Pipeline Position , Trenchless International , 7, 58-60, 2010.04.
500. Numerical Study about the Transmission of Thrust Force in Rectangular Pipe Jacking
Tomo MORITA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Fumihiko MATSUMOTO, Eiji SAKAI
Proc. of the 38th Symposium on Rock Mechanics .
501. Applicability of High Density Slurry Pipe Jacking Method for Cobble Layer with Multi Curve and Long Distance
Fumihiko MATSUMOTO, Tomo MORITA, Eiji SAKAI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI
Proc. of the 38th Symposium on Rock Mechanics .
502. Yoshiaki SAKAI, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA, Hideaki NAKAGAWA, Preliminary Study on the Planting of Jatropha Curcas as Biodiesel Feedstocks at an Aggregate Mine, Proc. of the 4th International Symposium on Novel Carbon Resources Science: Environmental Science and Technology, Shanghai CHINA, pp.91-98, 2009.12.
503. Sugeng WAHYUDI, Hideki SHIMADA, Ganda Marihot SIMANGUNSONG, Takashi SASAOKA, Kikuo MATSUI, Budi SULISTIANTO, Suseno KRAMADIBRATA, Effect of Some Blast Design Parameters on Blast Vibration Propagation and Prediction at an Open-pit Limestone Quarry: A Case Study, Proc. of International Symposium on Earth Science and Technology 2009, Fukuoka JAPAN, pp.397-402, 2009.12.
504. Masashi KOMURA, Koichi ARAKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Practical Study on a Restoration Method for Pipe Positions, Proc. of International Symposium on Earth Science and Technology 2009, Fukuoka JAPAN, pp.83-88, 2009.12.
505. Toru SATO, Tony SUZUKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI , An Application of the Japanese Pipe Jacking Technology for NEWater Singapore, Proc. of International Symposium on Earth Science and Technology 2009, Fukuoka JAPAN, pp.79-82, 2009.12.
506. Yoshiaki SAKAI, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA, Present Situation and Outlook for Aggregate Resources in Japan
, Proc. of International Symposium on Earth Science and Technology 2009, Fukuoka JAPAN, pp.73-78, 2009.12.
507. Nay Zar LIN, Takashi SASAOKA, Hideki SHIMADA, Kikuo MATSUI, Stability Analysis of Slopes of Open Cut Coal Mine and New Underground Mine Developed from its Highwall
in Indonesia, Proc. of International Symposium on Earth Science and Technology 2009, Fukuoka JAPAN, pp.57-62, 2009.12.
508. Jiro OYA, Hideki SHIMADA, Takashi SASAOKA, Masatomo ICHINOSE, Kikuo MATSUI, Riantia PERTIWI, Effec of Compacted Waste Rocks on AMD-prevention at Berau Coal Mine, Indonesia, Proc. of International Symposium on Earth Science and Technology 2009, Fukuoka JAPAN, pp.63-66, 2009.12.
509. Masashi KOMURA, Koichi ARAKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Takahisa TOMII, Numerical Study on the Grouting Behavior by Restoration Method for Pipe Renewal Positions, Proc. of the Trenchless Technologies in Asia Pacific Hong Kong 2009 Conference, Hong Kong CHINA , CD-ROM, 2009.11.
510. Yoshiaki SAKAI, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA, Hideaki NAKAGAWA, Masatomo ICHINOSE, Some Environmental Issues at a Surface Mine Locatied near Populated Area, Proc. of 18th International Symposium on Mine Planning & Equipment Selection and 11th International Symposium on Environmental Issues and Waste Management in Energy and Mineral Production, Banff CANADA, CD-ROM, 2009.11.
511. Hideki SHIMADA, Yasuhiro YOSHIDA, Koichi ARAKI, Takashi SASAOKA, Shuichi FUJITA, Kikuo MATSUI, Shinobu SATAKE, Masaaki ISHIKAWA, Application of Flash Setting Material for Temporally Earthquake Disaster Restoration of Gas Pipeline Using Fly Ash Cement Mixtures, Proc. of 18th International Symposium on Mine Planning & Equipment Selection and 11th International Symposium on Environmental Issues and Waste Management in Energy and Mineral Production, Banff CANADA, CD-ROM, 2009.11.
512. Kikuo MATSUI, Takashi SASAOKA, Hideki SHIMADA, Hirofumi FURUKAWA, An Application Underground Coal Mining System in Thick Seams
, Proc. of 18th International Symposium on Mine Planning & Equipment Selection and 11th International Symposium on Environmental Issues and Waste Management in Energy and Mineral Production, Banff CANADA, CD-ROM, 2009.11.
513. 笹岡 孝司, 島田 英樹, 松井 紀久男, Suseno Kramadibrata, Budi Sulistianto, Ridho Kresna Wattimena, Development of a colliery from open cut highwall in Indonesia, Mining Reporter - International Journal for Mining, Equipment and Technology-, 16-22, 2009.11, About 200 Mill. t of coal were imported into Japan in 2006 and Indonesia was its second largest exporter, accounting for about 30 Mill. t (12 % of the total imported coal). They produced about 200 Mill. t of coal, about 75 % of which was exported in 2007. As the Indonesian government has decided on an energy policy wherein 33 % of the country’s primary energy will be met by coal by the year 2025, the domestic demand for coal has increased dramatically in recent years.
Over 99 % of coal produced in Indonesia comes from surface mines. However, surface mine conditions are worsening each year: the stripping ratio is increasing, approaching the economic ratio, and the infrastructure for coal from inland mining areas is insufficient for such intense mining operations. To meet the demand for coal in Indonesia and the rest of the world, underground mines have to be developed. However, mining engineers and/or miners do not have a lot of experiences, expertise and know-how concerning the plans and operations of collieries. Besides, they have a lot of problems and/or worse conditions such as steep coal seam, groundwater problem, stability of pit slope. Under these circumustances, the coal mine targeted in this research attempts to develop a new colliery from open-cut highwall. In order to discuss and make a suitable underground mine design such as mine layouts including panel layout and location of main entries, design and stability of pit wall, support and mining system etc., onsite investigation and numerical analysis are being conducted in this research project.
As an initial stage of this research project, this paper introduces the overview of this project and discusses the possible development of a new colliery from an open-cut highwall by means of field observation and numerical analysis.
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514. Takashi Sasaoka, Hirofumi Furukawa, Yoshiaki Sakai, Kikuo Matsui, Hideki Shimada, Suseno Kramadibrata, Budi Sulistianto , Ground Control Problems at Ombilin Coal Mine, Indonesia, Proc. of 2009 Korea-Japan Joint Symposium on Rock Engineering, Rock Mechanics for Energy and Environment, pp.281-288, 2009.10.
515. Hideki Shimada, Koichi Araki, Masashi Komura, Takashi Sasaoka, Kikuo Matsui, Takahisa Tomi, Lifeline Restoration Method for Pipe Positions by Using Chemical Grouting in Urban Area , Proc. of 2009 Korea-Japan Joint Symposium on Rock Engineering, Rock Mechanics for Energy and Environment, pp.95-102, 2009.10.
516. Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Suseno Kramadibrata, Budi Sulistianto, Ridho Watinena, Feasibility Study and Design of a New Underground Coal Mine Developed from Open Cut Highwall in Indonesia , Proc. of 28th International Conference on Ground Control in Mining, pp.92-99, 2009.07.
517. Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Development of underground coal mine from open cut highwall in Indonesia, Proc. of AIMS 2009-High Performance Mining-, pp.495-510, 2009.06.
518. Candra NUGRAHA, Hideki SHIMADA, Takashi SASAOKA, Masatomo ICHINOSE, Kikuo MATSUI, Imanuel MANEGE , Geochemistry of Waste Rock at Dumping Area , International Journal of Mining, Reclamination and Environment , 23, 2, 132-143, 2009.06.
519. Candra NUGRAHA, Hideki SHIMADA, Takashi SASAOKA, Masatomo ICHINOSE, Kikuo MATSUI, Imanuel MANEGE , Waste Rock Characteristics at Tropical Coal Mine Area: A Case Study of PT. Kaltim Prima Coal, Indonesia , International Journal of the Japanese Committee for Rock Mechanics , 5, 2, 77-82, 2009.05.
520. Hideki Shimada, Hideaki Nakagawa, Takashi Sasaoka, Kikuo Matsu, Feasibility Study for Sustainable and Environment Conscious Infrastructure Development in Yogyakarta, Indonesia , Proceedings of 2nd International Symposium of Novel Carbon Resource Science Earth Resource Science and Technology , IV-25-IV-34, 2009.03.
521. Jiro Oya, Hideki Shimada, Takashi Sasaoka, Masatomo Ichinose, Kikuo Matsui, Rianita Pertiwi, Andi F. Fajrin , Fundamental Study on AMD-Prevention by Using Compacted Waste Rocks at Berau Coal Mine Indonesia , Proceedings of 2nd International Symposium of Novel Carbon Resource Science Earth Resource Science and Technology , IV-19-IV-24, 2009.03.
522. Candra Nugraha, Hideki Shimada, Takashi Sasaoka, Masatomo Ichinose, Kikuo Matsui, Evie H. Tular, Imanuel Manege , Mixed Acid and Non-acid Waste Rocks Associated with Acid Mine Drainage Generation: A Preliminary Result of Column Test Experiment , Proceedings of 2nd International Symposium of Novel Carbon Resource Science Earth Resource Science and Technology , IV-12-IV-18, 2009.03.
523. Sugeng Wahyudi, Takashi Sasaoka, Hideki Shimada, Kikuo Matsui , A Study of Blast Vibration Induced Fracture in Limestone Quarry , Proceedings of 2nd International Symposium of Novel Carbon Resource Science Earth Resource Science and Technology , III-36-III-46, 2009.03.
524. Hirofumi Furukawa, Kikuo Matsui, Takashi Sasaoka, Hideki Shimada , Application of a Punch Mining System to Indonesian Coal Mines
, Proceedings of 2nd International Symposium of Novel Carbon Resource Science Earth Resource Science and Technology , III-1-III-9, 2009.03.
525. Hideki SHIMADA, Yasuhiro YOSHIDA, Takashi SASAOKA, Kikuo MATSUI, Shuichi FUJITA, Takashi KAWAI, Kikuo MATSUI , Property of Flyash Surfactant Injection into Over-cutting Area As Lubricant for Slurry Pipe Jacking, Proc. of NO-DIG2009 27th International Conference and Exhibition, Toronto CANADA , CD-ROM, 2009.03.
526. Tomo MORITA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Fumihiko MATSUMOTO, Eiji SAKAI , Application of a Rectangular Pipe Jacking Machine for Box Culvert Pipe Line Construction , Proc. of NO-DIG2009 27th International Conference and Exhibition, Toronto CANADA , CD-ROM, 2009.03.
527. Koichi ARAKI, Masashi KOMURA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Takahisa TOMII , Restoration Method for Pipe Positions as the Renewal System , Proc. of NO-DIG2009 27th International Conference and Exhibition, Toronto CANADA , CD-ROM, 2009.03.
528. Toru SATO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Masaya HIRAI, Reizo YAMAOKA , The Practical Study on the Pipe Bursting Technology by Expandit in Japan , Proc. of NO-DIG2009 27th International Conference and Exhibition, Toronto CANADA , CD-ROM, 2009.03.
529. Tomo Morita, Hideki Shimada, Takashi Sasaoka, Kikuo Matsui, Suggention of New Method for Underground Space Construction by Rectangular Pipe Jacking, Proceedings of International Symposium on Earth Science and Technology 2008 , pp.669-674, 2008.12.
530. Candra Nugraha, Hideki Shimada, Takashi Sasaoka, Masatomo Ichinose, Kikuo Matsui, Imanuel Manege , Lithology-based Rock Weathering Behavior in Acid Mine Drainage Generation , Proceedings of International Symposium on Earth Science and Technology 2008 , pp.381-388, 2008.12.
531. Masashi Inoue, Takashi Sasaoka, Hideki Shimada, Masatomo Ichinose, Kikuo Matsui , Study on Slope Stability in Adaro Coal Mine, Indonesia , Proceedings of International Symposium on Earth Science and Technology 2008 , pp.315-322, 2008.12.
532. Sugeng Wahyudi, Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Shiro Kubota, Yuji Ogata , Predictive Models of Near-field Blast Vibration Induced by Blasting for Identification of Blast Damage at Limestone Quarry , Proceedings of International Symposium on Earth Science and Technology 2008 , pp.307-314, 2008.12.
533. Jiro Oya, Hideki Shimada, Takashi Sasaoka, Masatomo Ichinose, Kikuo Matsui , Fundamental Study of Ground Water Contamination By Acid Mine Drainage at Berau Coal Mine in Indonesia , Proceeding of International Symposium on Earth Science and Technology 2008, pp.29-34, 2008.12.
534. Kikuo Matsui, Takashi Sasaoka, Hideki Shimada, Utilisation of Underground Space in Final Pit Walls at Surface Mines, Proceedings of First International Future Mining Conference & Exhibition 2008, pp.35-38, 2008.11.
535. Hideki Shimada, Takashi Sasaoka, Kikuo Matsui, Jan Gottfried, Oldrich Kodym, Vladimir Kebo, Numerical Study on Effect of Rock Mass Stability on Deep Deposit Slicing at Uranium Mine in Czech Republic, Proc. of International Symposium on 16th Mine Planning and Equipment Selection, pp.666-672, 2008.10.
536. Candra Nugraha, Hideki Shimada, Takashi Sasaoka, Masatomo Ichinose, Kikuo Matsui, Imanuel Manege, Geochemistry of waste rock at dumping area, 第12回岩の力学国内シンポジウム＆第29回西日本岩盤工学シンポジウム, 第12回岩の力学国内シンポジウム＆第29回西日本岩盤工学シンポジウム論文集(CD-ROM-No.71), 2008.09.
537. Sugeng Wahyudi, Takashi Sasaoka, Hideki Shimada, Kikuo Matsui, Shiro Kubota, Yuji Ogata, Analysis and prediction of near-field monitoring ground vibration induced by blasting for identification of blast damage at limestone quarry, 第12回岩の力学国内シンポジウム＆第29回西日本岩盤工学シンポジウム, 第12回岩の力学国内シンポジウム＆第29回西日本岩盤工学シンポジウム論文集（CD-ROM-No.64）, 2008.09.
538. Characteristics and Tasks of Lubricant Injected into Over-cutting Area for Pipe Jacking
Hideki SHIMADA, Yasuhiro YOSHIDA, Takashi SASAOKA, Kikuo MATSUI
Journal of Japan Sewage Works Association, Vol.45, No.550, pp.141-153, August 2008 .
539. Restoration of Pipeline Position Using Grouting
Koichi ARAKI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Takahisa TOMII
No-Dig Today, Vol.64, pp64-71, 2008 .
540. Takashi Sasaoka, Hideki Shimada, Masatomo Ichinose, Kikuo Matsui, Suseno Kramadibrata, and Budi Sulistianto, Footwall Stability and Final Pit Design in the P.T. Adaro Coal Mine, Indonesia, 27th International Conference on Ground Control in Mining, pp.166-172, 2008.07.
541. Reizo YAMAOKA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Masaya HIRAI, Numerical Study on Effect on Pipe Bursting on Adjacent Structure/Pavement , Proc. of NO-DIG2008 26th International Conference and Exhibition, Moscow RUSSIA , CD-ROM , 2008.06.
542. Hideki SHIMADA, Yasuhiro YOSHIDA, Takashi SASAOKA, Shuichi FUJITA, Masatomo ICHINOSE, Masuhiko IINO, Kikuo MATSUI , Lubrication Property Requirements for Injection into Over-cutting Area Using Extra-large-diameter Slurry Pipe Jacking , Proc. of NO-DIG2008 26th International Conference and Exhibition, Moscow RUSSIA, CD-ROM , 2008.06.
543. Tomo MORITA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Fumihiko MATSUMOTO, Eiji SAKAI , Development of Rectangular Pipe Jacking Systems for Urban Infrastructure Utilization , Proc. of NO-DIG2008 26th International Conference and Exhibition, Moscow RUSSIA, CD-ROM , 2008.06.
544. Yasuhiro YOSHIDA, Hideki SHIMADA, Jan GOTTFRIED, Takashi SASAOKA, Shuichi FUJITA, Masatomo ICHINOSE, Masuhiko IINO, Kikuo MATSUI , Development of Pipe Jacking Lubrication for large Diameter Tunnel Excavation Using Flyash , Proc. of 12th Conference on Environment and Mineral Processing, Ostrava CZECH , Vol.2, pp.269-276, 2008.06.
545. Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE, Kikuo MATSUI , Improvement of Roof Support System under Weak Roof Conditions by way of Numerical Analysis , Proc. of 6th International Symposium on Rockbolting in Mining & Injection Technology and Roadway Support Systems , pp.69-84 , 2008.05.
546. Kikuo MATSUI, Takashi SASAOKA, Hideki SHIMADA, Takeshi UEDA, Suseno KRAMADIBRATA, Budi SULISTIANTO , Highwall Mining Systems at Surface Coal Mines in Indonesia, Coal International, Vol.256, No.3, pp.28-31 , 2008.05.
547. Jiro OYA, Hideki SHIMADA, Takashi SASAOKA, Masatomo ICHINOSE, Kikuo MATSUI, Muhammad FAJRIN , Acid Mine Drainage at Berau Coal Mine in Indonesia , Proc. of the International Workshop and Conference on Earth Science Technology, Bangkok THAILAND , CD-ROM , 2008.04.
548. Candra NUGRAHA, Jiro OYA, Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE, Kikuo MATSUI, Imanuel MANEGE , A Study of Acid Mine Drainage Generation: The Influence of Rock Weathering Behavior , Proc. of the International Workshop and Conference on Earth Science Technology, Bangkok THAILAND , CD-ROM, 2008.04.
549. Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Takashi KAWAI, Yasuhiro YOSHIDA, Koichi ARAKI , Constuction of an Infrastructure Pipeline Using a No-Digging Pipe-jacking System in Japan , Proc. of the International Workshop and Conference on Earth Science Technology, Bangkok THAILAND , CD-ROM, pp.120-125, 2008.04.
550. Sugeng WAHYUDI, Hideki SHIMADA, Mostafa TANTAWY, Takashi SASAOKA, Masatomo ICHINOSE, Kikuo MATSUI, Suseno KRAMADIBRATA, Budi SULISTIANTO, Hendro ICHWANTO , Predictors Evaluation of Ground Vibration due to Blasting Operation in Coal Mine , Proc. of the International Workshop and Conference on Earth Science Technology, Bangkok THAILAND, CD-ROM, 2008.04.
551. Hideki SHIMADA, Kikuo MATSUI, Takashi SASAOKA, Masatomo ICHINOSE , Construction of Lifeline System Using Slurry Pipe Jacking in Japan , Proc. of 3rd Brazilian Congress of Trenchless Technology, Sao Paulo BRAZIL , CD-ROM, 2008.02.
552. Development of Grouting Material for Rehabilitations of Pipeline Using Flyash-Surfactant Cement Mixture Material
Yasuhiro YOSHIDA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Masatomo ICHINOSE, Shuichi FUJITA, Masakazu MINESHITA and Tatsuya MIZUNUMA
Journal of MMIJ, Vol.124, No.12, pp.794-800, December, 2008
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553. Appllicability of the DEYNO-crushing Pipe-jacking Machine for the Big Cobble and Rock Layer
Fumihiko MATSUMOTO, Tomo MORITA, Eiji SAKAI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI
Proc. of the 37th Symposium on Rock Mechanics .
554. Jiro OYA, Hideki SHIMADA, Takashi SASAOKA, Masatomo ICHINOSE, Kikuo MATSUI , Acid Mine Drainage and Slaking Behavior at Tanjung Enim Coal Mine in Indonesia
, Proc. of International Symposium on 16th Mine Planning and Equipment Selection and Environment Issues and Waste Management in Energy and Mineral Production, Bangkok THAILAND , CD-ROM , 2007.12.
555. Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Masatomo ICHINOSE, Shuichi FUJITA, Jan GOTTFRIED, Masuhiko IINO, Yasuhiro YOSHIDA, Effect of Flyash Type on Fluidability of Flyash Cement , Proc. of International Symposium on 16th Mine Planning and Equipment Selection and Environment Issues and Waste Management in Energy and Mineral Production, Bangkok THAILAND , CD-ROM , 2007.12.
556. Yasuhiro YOSHIDA, Hideki SHIMADA, Masuhiko IINO, Takashi SASAOKA, Kikuo MATSUI, Masatomo ICHINOSE, Shuichi FUJITA, Masakazu MINESHITA, Tatsuya MIZUNUMA, Takashi KAWAI , Application of Injection Material for Offshore Structure Using Flyash-surfactant Mixtures , Proc. of International Symposium on 16th Mine Planning and Equipment Selection and Environment Issues and Waste Management in Energy and Mineral Production, Bangkok THAILAND , CD-ROM , 2007.12.
557. Candra NUGRAHA, Imanuel MANEGE, Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE, Kikuo MATSUI , Acid Rock Drainage Management at PT. Kaltim Prima Coal and Its Relationship with Water Quality Regulations in Indonesia , Proc. of International Symposium on 16th Mine Planning and Equipment Selection and Environment Issues and Waste Management in Energy and Mineral Production, Bangkok THAILAND, CD-ROM , 2007.12.
558. Kikuo MATSUI, Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE , Effect of Tunneling from Slope Wall on the Slope Stability , Proc. of International Symposium on 16th Mine Planning and Equipment Selection and Environment Issues and Waste Management in Energy and Mineral Production, Bangkok THAILAND, CD-ROM, 2007.12.
559. Tomo MORITA, Hideki SHIMADA, Takashi SASAOKA, Shuichi FUJITA, Masatomo ICHINOSE, Kikuo MATSUI, Fumihiko MATSUMOTO, Eiji SAKAI , Experimental and Numerical Study on the Stability of the Ground Using High Density Slurry Pipe-jacking Method , Proc. of 5th International Symposium on Earth Resources Technology,Fukuoka JAPAN , pp.433-440, 2007.12.
560. Candra NUGRAHA, Jiro OYA, Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE, Kikuo MATSUI, Imanuel MANEGE , Rock Weathering and Water Quality: A Study of Acid Mine Drainage Generation , Proc. of 5th International Symposium on Earth Resources Technology,Fukuoka JAPAN , pp.51-58 , 2007.12.
561. Sugeng WAHYUDI, Mostafa TANTAWY, Hideki SHIMADA, Takashi SASAOKA, Masatomo ICHINOSE, Kikuo MATSUI, Budi SULISTIANTO, Suseno KRAMADIBRATA , Prediction of Ground Vibration and Air Blast Induced by Blasting in Coal Mine: A Case Study , Proc. of 5th International Symposium on Earth Resources Technology,Fukuoka JAPAN , 2007.12.
562. Jiro OYA, Hideki SHIMADA, Takashi SASAOKA, Masatomo ICHINOSE, Kikuo MATSUI , Prospects for Amount of AMD at Tanjung Enim Coal Mine in Indonesia , Proc. of 5th International Symposium on Earth Resources Technology,Fukuoka JAPAN , pp.19-24 , 2007.12.
563. Study on 3D Analysis for Pipe Bursting
Reizo YAMAOKA, Hitoshi WATANABE, Masaya HIRAI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI
Proc. of 18th Symposium on Trenchless Technology, pp.13-20, November 2007 .
564. Analytical Study on Behavior of Surrounding Soil by Culvert Pipe Jacking Method
Tomo MORITA, Shohei MUTO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Fumihiko MATSUMOTO, Eiji SAKAI
Proc. of 18th Symposium on Trenchless Technology, pp.35-40, November 2007 .
565. Tomo MORITA, Shohei MUTO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Fumihiko MATSUMOTO, Eiji SAKAI , Study on Influences on the Ground by Culvert Pipe Jacking Method , Proc. of Trenchless Technologies in Asia Pacific Macau 2007, Macau CHINA , CD-ROM, 2007.11.
566. Reizo YAMAOKA, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Masaya HIRAI, Tsuyoshi NISHI , Study on 3D Analysis for Pipe Bursting , Proc. of Trenchless Technologies in Asia Pacific Macau 2007, Macau CHINA , CD-ROM, 2007.11.
567. Slaking Behavior Concering the Mechanism and Control of Acid Mine Drainage at Opencut Coal Mine in Indonesia
Jiro OYA, Hideki SHIMADA, Kikuo MATSUI, Masatomo ICHINOSE, Takashi SASAOKA, Hideaki NAKAGAWA
Journal of MMIJ, Vol.123, No.11, pp.511-517, 2007 .
568. Candra NUGRAHA, Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE, Kikuo MATSUI, Jiro OYA, Imanuel MANEGE, A Laboratory Experiment of Rock Weathering and Its Relationship to Water Quality, 第28回西日本岩盤工学シンポジウム論文集 , pp.33-40, 2007.09.
569. AMD and Rehabilitation at Tanjung Enim Coal Mine, Indonesia
Jiro OYA, Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE, Kikuo MATSUI
Proceedings of the 28th West Japan Symposium on Rock Engineering, pp.93-96, September 2007
.
570. Sugeng WAHYUDI, Takayuki SASAKI, Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE, Kikuo MATSUI, Shiro KUBOTA, Yuji OGATA , Analysis of Blast Vibration for Identification of Blast Damage at Limestone Quarry , 第28回西日本岩盤工学シンポジウム論文集, pp.27-32, 2007.09.
571. Tomo MORITA, Shohei MUTO, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Fumihiko MATSUMOTO, Eiji SAKAI, Study on Stability of Surrounding Soil Using Culvert Pipe Jacking , Proc. of NO-DIG2007 25th International Conference and Exhibition, Rome ITALY , CD-ROM , 2007.09.
572. Reizo YAMAOKA, Hideki SHIMADA, Takashi SASAOKA, Masaya HIRAI , Analytical Study on the Ground Movement Caused by Pipe Bursting, Proc. of NO-DIG2007 25th International Conference and Exhibition, Rome ITALY , CD-ROM , 2007.09.
573. ideki SHIMADA, Takashi KAWAI, Takashi SASAOKA, Kikuo MATSUI, Masatomo ICHINOSE, Shuichi FUJITA, Masuhiko IINO, Yasuhiro YOSHIDA , Behavior of Over-cutting Area Injected by Flyash Surface-active Agent Mixture Material, Proc. of NO-DIG2007 25th International Conference and Exhibition, Rome ITALY , CD-ROM , 2007.09.
574. Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE, Kikuo MATSUI, Suseno KRAMADIBRATA, Budi SRISTIANTO, Ridho WATINENA, Improvement in Roof Support Systems at a New Underground Coal Mine Developed from Open-Cut Highwall in Indonesia, Proc. of the 26th International Conference on Ground Control in Mining, Morgantown WV, USA , pp.122-128 , 2007.08.
575. Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, Masatomo ICHINOSE, Shuichi FUJITA, Takashi KAWAI, Practical Study on Large Diameter Pipe Jacking in the Construction of Sewage Systems, Proc. of First Sri Lankan Geotechnical Society International Conference on Soil and Rock Engineering, Colombo SRI LANKA, CD-ROM (1920.pdf), 2007.08.
576. Hideki SHIMADA, Takashi SASAOKA, Jan GOTTFRIED, Kikuo MATSUI, Masatomo ICHINOSE, Shuichi FUJITA, Masuhiko IINO and Yasuhiro YOSHIDA, Relation between Fluidability of Flyash Cement and Size/Shape of Flyash Particles, The 11th Conference on Environment and Mineral Processing, Vol.3, pp.161-168, 2007.05.
577. Takashi SASAOKA, Kikuo MATSUI, Hideki SHIMADA, Hirofumi FURUWAKA, Masafumi UEHARA, Suseno KRAMADIBRATA and Budi SULISTIANTO, Roof Support System at a New Underground Mine Developed from Open-cut Highwall in Indonesia, High-Performance Mine Production, pp.107-120, 2007.05.
578. Kikuo MATSUI, Takashi SASAOKA, Hideki SHIMADA, Takeshi UEDA, Suseno KRAMADIBRATA and Budi SULISTIANTO, Operational and Geotechnical Problems in Highwall Mining Systems at Surface Coal Mines in Indonesia, High-Performance Mine Production, pp.89-100, 2007.05.
579. Jiro OYA, Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE, Kikuo MATSUI and Hideaki NAKAGAWA, Monitoring of Rehabilitation at Opencut Coal Mine in Indonesia, International Workshop on Earth Resources Technology, pp.93-97, 2007.04.
580. Case Study on Earth Balance Pipe Jacking for Rock Mass
Tomo MORITA, Fumihiko MATSUMOTO, Eiji SAKAI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI
Proc. of the Symposium on Rock Mechanics, CD-ROM, 2007.
581. Slaking Problem in Opencut Coak Mine in Indonesia
Jiro OYA, Takashi SASAOKA, Hideki SHIMADA, Masatomo ICHINOSE, Kikuo MATSUI
Proc. of the Symposium on Rock Mechanics, CD-ROM, 2007.
582. Study on Effect of Blast Vibration on Size of Fragmentation at Limestone Quarry
Hideki Shimada, Kikuo Matsui, Masatomo Ichinose, Takashi Sasaoka, Shiro Kubota, Ganda M. Simangunsong, Yuji Ogata
Journal of the mining and materials processing institute of Japan, Vol.122-12, pp.573-581, 2006.
583. Reizo YAMAOKA, Masaya HIRAI, Hideki SHIMADA, Takashi SASAOKA, Kikuo MATSUI, The Field Test of the Ground Movements by the Expandit Pipe Bursting and Replacement System, Proc. of 4th International Workshop on Earth Science and Technology, Fukuoka JAPAN, pp.505-516, 2006.12.
584. Jiro OYA, Hideki SHIMADA, Kikuo MATSUI, Masatomo ICHINOSE, Takashi SASAOKA, Suseno KRAMADIBRATA, Candra NUGRAHA, Slaking Behavior of Coal Measure Rocks Categorized by NAG Test at Coal Mine in Indonesia, Proc. of 4th International Workshop on Earth Science and Technology, Fukuoka JAPAN, pp.247-252, 2006.12.
585. Sugeng WAHYUDI, Hideki SHIMADA, Kikuo MATSUI, Masatomo ICHINOSE, Takashi SASAOKA, Budi SULISTIANTO, A.P.WIBOWO, Suseno KRAMADIBRATA, Ganda Marihot SIMANGUNSONG, Analysis of the Characteristics of Magnitude and Prediction of Blast Vibration in Limestone Quarry, Proc. of 4th International Workshop on Earth Science and Technology, Fukuoka JAPAN, pp.53-58, 2006.12.
586. Candra NUGRAHA, Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA, Acid Rock Drainage Management and its Relationshio with Water Quality Regulations for Mining Industry in Indonesia, Proc. of 4th International Workshop on Earth Science and Technology, Fukuoka JAPAN, pp.45-52, 2006.12.
587. Hideki SHIMADA, Takashi KAWAI, Takashi SASAOKA, Kikuo MATSUI, Masatomo ICHINOSE, Shuichi FUJITA, Yasuhiro YOSHIDA, Behavior of Lubricant Injection into Over-cutting Area for Slurry Pipe Jacking, Proc. of NO-DIG2006 24th International Conference and Exhibition, Brisbane AUSTRALIA, CD-ROM, 2006.11.
588. Kikuo MATSUI, Hideki SHIMADA, Takashi SASAOKA, Masatomo ICHINOSE, Effect of Backfilling on Stability of Pillars in Highwall Mining Systems, Proc. of 4th Asian Rock Mechanics Symposium on Rock Mechanics in Underground Construction, Singapore SINGAPORE, CD-ROM, 2006.11.
589. Takashi Sasaoka, Syd S. Peng, David X. Tang, and Gene Wilson, Estimation of Roof Strata Strength in Mine Roof GeologyInformation System(MRGIS), SME Annual Meeting, Preprint No.06-09, 2006.02.
590. Hideki Shimada, Takashi Sasaoka, Saeid Khazaei, Yasuhiro Yoshida, and Kikuo Matsui, Performance of Mortal and Chemical Grout Injection into Surrounding Soil when Slurry Pipe-jacking Method is Used, Journal of Geotechnical and Geological Engineering, Vol.24, No.1, pp.57-77, 2006.02.
591. Syd S. Peng, David X. Tang, Takashi Sasaoka, Yi Luo, and Gene Wilson, A Method for Quantitative Void/Fracture Detection and Estimation of Rock Strength for Underground Mine Roof, 24th International Conference on Ground Control in Mining, pp.187-195, 2005.08.
592. Kikuo Mastui, Hideki Shimada, Takashi Sasaoka, Hirofumi Furukawa, Takeshi Ueda, Atsuko Yabuki, Suseno Kramadibrata, Budi Sulistianto, Highwall Stability due to Punch Mining at Opencut Coal Mines, International Journal of Surface Mining, Reclamation and Environment, Vol.18, No.3, pp185-204, 2004.09.
593. Study on Chemical Grouting by Using Pipe-Jacking
Takashi Sasaoka, Hideki Shimada, Shiro Kubota, and Kikuo Matsui
Journal of the mining and materials processing institute of Japan, Vol.120-3, pp.152-158, 2004.
594. K.Matsui, H.Shimada, T.Sasaoka, H.Cao, S.Kato, H.Furukawa, T.Ueda, A.Yabuki, S.Kramadibrata, B.Sulistianto, Highwall Stability due to Punch Mining at Opencut Coal Mines, Proc.of the 4th International Conference on Computer Applications in the Minerals Industries, Calgary CANADA, CD-ROM, 2003.09.
595. Effect of Pipe Shapes on the Stability of Surrounding Soil in the Construction of Underground Pipelines in Using Slurry Pipe-jacking.
596. Numerical Simulation on Seepage Behavior and Effect of Chemical Grount Injection in the Construction of Underground Pipelines Using Slurry Pipe-jacking
Takashi Sasaoka, Hideki Shimada, Shiro Kubota, and Kikuo Matsui
Journal of Japan Sewage Works Association, Vol.40-487, pp.117-126, 2003.
597. K.Matsui, A.Yabuki, H.Shimada, T.Sasaoka, T.Ueda, T.Yuasa, A Practical Trial to Increase the Coal Recovery in Highwall Auger Mining in Australia, Proc.of 12th International Symposium on Mine Planning & Equipment Selection, Kalgoorlie AUSTRALIA, CD-ROM(pp.205-208), 2003.04.
598. H.Shimada, T.Sasaoka, S.Kubota, K.Matsui, Y.Yoshida, The Application of Flyash Cement in Mining Backfill Material, Proc.of 12th International Symposium on Mine Planning & Equipment Selection, Kalgoorlie AUSTRALIA, CD-ROM(pp.199-204), 2003.04.
599. H.Shimada, T.Sasaoka, E.Sakai, K.Matsui, Effect of Pipe Shapes on the Stability of Surrounding Soil in the Construction of Underground Pipelines in Using Slurry Pipe-jacking, Proc.of International NO-DIG Conferece, Las Vegas USA, CD-ROM（C-2-03), 2003.03.
600. Application of Filling Materials for Flyash Cement
Proceedings of the 32nd Symposium of Rock Mechanics, Tokyo JAPAN, pp.360-364, January 2003
H.Shimada, T.Sasaoka, S.Kubota, K.Matsui.
601. H.Shimada, T.Sasaoka, H.Yamakawa, S.Kubota, K.Matsui, Effect of Shapes on Stability of Surrounding Soil Using Slurry Pipe-jacking, Proc. of New Development in Rock Mechanics and Rock Engineering, Shenyang CHINA, 395-398, pp.395-398, 2002.10.
602. T.Sasaoka, H.Shimada, K.Matsui, The Utilization of Flyash as a Backfilling Materials in Mining and Civil Engineering Field, Proc. of 7th Int. Sympo. on Environmental Issues and Waste Management in Energy and Mineral Production, Cagliari ITALY, pp.1119-1125, 2002.10.
603. T.Sasaoka, H.Shimada, M.Koga, K.Matsui, Study on Seepage/Dispersion Behavior and Effect of Reinforcement When Grouting Material Injection into Slaking-prone Mine Tunnel Floor, Proc. of Special Workshop on Earth Science and Technology, Bandung INDONESIA, pp.83-94, 2002.09.
604. A.Yabuki, K.Matsui, H.Shimada, T.Sasaoka, T.Ueda, T.Yuasa, Highwal Auger Mining in Australia, Proc. of Special Workshop on Earth Science and Technology, Bandung INDONESIA, pp.73-82, 2002.09.
605. M.Koga, H.Shimada, T.Sasaoka, S.Kubota, K.Matsui, Fundamental Study in Flow Property of Grouting Material into Soil Voids, Proc. of International Association for Engineering Geology and the EnvironmentDurban, SOUTH AFRICA, pp.2076-2086, 2002.09.
606. H.Shimada, T.Sasaoka, S.Kubota, K.Matsui, Seepage and Reinforcement Behavior of Grouting into Slaking-prone Mine Tunnel Floor, Proc. of 21st International Conference on Ground Control in Mining, Morgantown USA, pp.251-256, 2002.08.
607. Effect of the Chemical Grout Injection on the Surrounding Soil in the Construction of Underground Pipelines Using Slurry Pipe-jacking
Journal of NO-DIG today, Vol.40, pp.51-57, July 2002
H.Shimada, T.Sasaoka, S.Kubota, K.Matsui.
608. M.Koga, H.Shimada, T.Sasaoka, S.Kubota, K.Matsui, Study on Plastic Viscosity Model and Applicability of Injection Analysis of Grouting Material, Proc. of 3rd Korea-Japan Joint Symposium on Rock Engineering, Seoul KOREA, Vol.2, pp.817-824, 2002.07.
609. T.Sasaoka, H.Shimada, S.Kubota, K.Matsui, Study on Stability of Soil around Micro-tunnel Construction Using Slurry Pipe-jacking when Flyash Mortal Injectioninto Over-cutting Area, Proc. of 3rd Korea-Japan Joint Symposium on Rock Engineering, Seoul KOREA, Vol.2, pp.589-596, 2002.07.
610. H.Shimada, T.Sasaoka, S.Kubota, K.Matsui, Effect of the Chemical Grout Injection on the Surrounding Soil in the Construction of Underground Pipelines Using Slurry Pipe-jacking, Proc. of 20th NO-DIG Conference, Copenhagen DENMARK, CD-ROM, 2002.05.
611. H.Shimada, T.Sasaoka, S.Kubota, K.Matsui, Construction Method of Micro-tunnels Using Slurry Pipe-jacking, Proc. of International Workshop on Intelligent Mining Systems, Fukuoka JAPAN, pp.115-122, 2002.04.
612. The Stability of Extraction Holes in Highwall Mining
Proc. of the 11th Japan Sympo. on Rock Mechanics, K02(CD-ROM), January 2002
K.Matsui, H.Shimada, T.Sasaoka, A.Yabuki.
613. Numerical Analysis on Chemical Grout Injection into the Surrounding Soil Using Slurry Pipe-jacking
Proc. of the 11th Japan Sympo. on Rock Mechanics, H09(CD-ROM), January 2002
T.Sasaoka, H.Shimada, S.Kubota, K.Matsui.
614. Effect of Pipe Shapes on Stability of Surrounding Soil Using Slurry Pipe-jacking
Proc. of the 11th Japan Sympo. on Rock Mechanics, H06(CD-ROM), January 2002
H.Shimada, T.Sasaoka, S.Kubota. K.Matsui.
615. Study on Flow in Ground Voids of Grouting Materials and Applicability to Field of Injection Analysis
Proc. of the 11th Japan Sympo. on Rock Mechanics, G10(CD-ROM), January 2002
M.Koga, H.Shimada, T.Sasaoka, S.Kubota, K.Matsui.
616. H.Shimada, T.Sasaoka, S.Kubota, K.Matsui, Study on Stability of Soil around Micro-tunnel Construction Using Slurry Pipe-jacking, Proc. of 14th Southeast Asian Geotechnical Conference. Hong Kong CHINA, 425-429, pp.425-429, 2001.12.
617. K.Matsui, H.Shimada. T.Sasaoka, S.Kramadibrata, M.A.Rai, The Possibility of an Introduction of Punch Longwall Mining to Indonesian Surface Coal Mines, Proc. of 10th International Symposium on Mine Planning and Equipment Selection, New Dehli INDIA, 325-330, pp.325-330, 2001.11.
618. Estimation of Thrust in the Construction of Underground Pipelines of Sewage Systems in Curved Jacking Area Using Slurry Pipe-jacking
Journal of NO-DIG today, Vol.37, pp.12-17, October 2001
H.Shimada, T.Sasaoka, M.Inoue, S.Kubota, K.Matsui.
619. H.Shimada, M.Inoue, T.Sasaoka, S.Kubota, K.Matsui, Estimation of Thrust in the Construction of Underground Pipeline Systems in a Curved Area Using Slurry Pipe-jacking, Proc. of 2001 ISRM Symposium -2nd Asian Rock Mechanics Symposium, Beijing CHINA, 423-426, pp.423-426, 2001.09.
620. H.Shimada. T.Sasaoka, M.Inoue, S.Kubota, K.Matsui, Estimation of Thrust in the Construction of Underground Pipelines of Sewage Systems in Curved Jacking Area Using Slurry Pipe-jacking, Proc. of 19th International NO-DIG Conference & Exhibition, Prague CZECH, CD-ROM, 2001.09.
621. T.Sasaoka, H.Shimada. M.Ichinose. S.Kubota, K.Matsui, Utilization of Flyash as a Backfilling Material in Highwall Mining System, 3rd Asian Symposium Engineering Geology and the Environment, Yogyakarta INDONESIA, pp.263-272, 2001.09.
622. Experimental Study on Viscosity Measurement of Grout Materials and Fluidability behavior in Soil Voids
Proceedings of the 22nd West Japan Symposium on Rock Engineering, Yamaguchi JAPAN, pp.101-106, July 2001
M.Koga,H.Shimada, T.Sasaoka. S.Kubota, K.Matsui.
623. T.Sasaoka, H.Shimada, S.Kubota, K.Matsui, Effect of Mortal Injection and Secondary Chemical Grouting Injection into Over-cutting Area Using Slurry Pipe-jacking, Proc. of International Symposium on Geotechnical Issues of Underground Space Use for Environmentally Procted World, Dnipropetrovsk UKRAINE, pp.17-24, 2001.06.
624. T.Sasaoka, M.Koga, H.Shimada, S.Kubota, K.Matsui, Analysis of Seepage Behavior of the Grout into Roadway Floor, Proc. of 29th International Symposium on Computer Applications in the Minerals Industries, Beijing CHINA, 643-646, pp.643-646, 2001.04.
625. M.Koga, T.Sasaoka, H.Shimada, S.Kubota, K.Matsui, Numerical Simulation on Grouting Material Injection into Soil, Proc. of 29th International Symposium on Computer Applications in the Minerals Industries, Beijing CHINA, 627-630, pp.627-630, 2001.04.
626. Properties of Mud Slurry and Mortar Injection in Using Pipe Jacking
Takashi Sasaoka, Hideki Shimada, Shiro Kubota, and Kikuo Matsui
Journal of the mining and materials processing institute of Japan, Vol.117-3, pp.195-201, 2001.
627. Fundamental Study on Grout Injection
Proceedings of the 30th Symposium of Rock Mechanics, Tokyo JAPAN, pp.316-320, January 2001
M.Koga, T.Sasaoka, H.Shimada, K.Matsui.
628. Journal of NO-DIG today, Vol.34, pp.14-20, December 2000
H.Shimada, T.Sasaoka, M.Inoue, S.Kubota, K.Matsui.
629. Estimation of Thrust in the Construction of Underground Pipeline Systems in a Curved Area Using Slurry Pipe-jacking -2nd Report-
Hideki Shimada, Masafumi Inoue, Takashi Sasaoka, Shiro Kubota, and Kikuo Matsui
Journal of the mining and materials processing institute of Japan, Vol.116-12, pp.979-987, 2000.
630. M.Koga, T.Shiba, T.Sasaoka, H.Shimada, K.Matsui, Fundamental Study on Cement Grout Injection into Soil −Effect of Soil Voids on Cement Suspension−, Proceedings of an International Conference on Geotechnical & Geological Engineering,"GeoEng2000", Melbourne AUSTRALIA, GIGS, GIGS0938.PDF(CD-ROM), 2000.11.
631. T.Sasaoka, H.Shimada, S.Kubota, K.Matsui, Effect of Mortar Injection on Over-cutting Area Using Slurry Pipe-jacking, Proceedings of an International Conference on Geotechnical & Geological Engineering,"GeoEng2000", Melbourne AUSTRALIA, UW, UW0123.PDF(CD-ROM), 2000.11.
632. H.Shimada, T.Sasaoka, M.Inoue, S.Kubota, K.Matsui, A new method for the Construction of Small Diameter Tunnels Using Slurry Pipe-jacking −Effect of Mud Screen and Slurry Pressure on Soil Stability−, Proceedings of an International Conference on Geotechnical & Geological Engineering,"GeoEng2000", Melbourne AUSTRALIA, UW, UW0022.PDF(CD-ROM), 2000.11.
633. K.Matsui, H.Shimada, T.Sasaoka, M.Ichinose, S.Kubota, Highwall Mining System with Backfilling, Proceedings of 9th International Symposium on Mine Planning and Equipment Selection,Athens GREECE, 333-338, pp.333-338, 2000.11.
634. H.Shimada, T.Sasaoka, M.Inoue, S.Kubota, K.Matsui, Rehabilitation Method by Mortar Injection Using Slurry Pipe-jacking, Proceedings of NO-DIG 2000 Conference, Perth AUSTRALIA, pp.301-310, 2000.10.
635. Fundamental Study on Grout Injection into Fractured Rock Mass
Proceedings of the 21st West Japan Symposium on Rock Engineering, Kumamoto JAPAN,
pp.161-166, August 2000
M.Koga, T.Sasaoka, H.Shimada, S.Kubota, K.Matsui.
636. Study on Floor Grouting at Coal Mine
Proceedings of the 21st West Japan Symposium on Rock Engineering, Kumamoto JAPAN,
pp.161-166, August 2000
M.Koga, T.Sasaoka, H.Shimada, S.Kubota, K.Matsui.
637. K.Matsui, T.Sasaoka, H.Shimada, M.Ichinose, S.Kubota, Disposal and Utilization of Mine Waste Rocks and Flyash as a Coal Mine Backfill, Proceedings of 6th International Symposium on Environmental Issues and Waste Management in Energy and Mineral Production, Calgary CANADA, 219-224, pp.219-224, 2000.06.
638. T.Sasaoka, H.Shimada, S.Kubota, K.Matsui, M.Koga, Fundamental Study for Simulation of Grouting in Soil/Fracture Rock Mass Using Eulerian-Lagradian Seepage Analysis, Proc. of '99 Japan-Korea Joint Symposium on Rock Engineering, Fukuoka JAPAN, pp.483-488, 1999.08.
639. K.Matsui, H.Shimada, H.Z.Anwar, M.Ichinose, S.Kubota, T.Sasaoka, Sidewall Weakening Technique for Controling Mine Roadway Closure, Proc. of '99 Japan-Korea Joint Symposium on Rock Engineering, Fukuoka JAPAN, pp.133-138, 1999.08.
640. Fundamental Study on Grouting Seepage Performance
Proceedings of the 17th West Japan Symposium on Rock Engineering, Yamaguchi JAPAN, pp.113-118, July 1998
T.Sasaoka, H.Shimada, S.Kubota, K.Matsui, M.Koga, T.Shiba.


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