Abstract
Fully mechanized backfilling mining technology with waste, fly ash, and loess, etc. provides advantages of safety and high efficiency to the extraction of coal under buildings, railways and water bodies. In this paper, the bulk ratios of backfilling bodies with different waste and fly ash mixture ratio was analyzed with MTS815.02 electro-hydraulic servo rock mechanical testing system and compacting device, the optimal mixture ratio of waste and fly ash was determined, and it proposed that the backfilling body should be firstly compacted after being backfilled into the goaf. With numerical simulation, the impacts of bulk ratio of waste and fly ash backfilling body to overlying strata movement law and surface subsidence controlling in backfilling mining were analyzed, and it figured out the bulk ratio of backfilling body that could ensure a reasonable range of surface subsidence. Finally, the engineering application confirmed that the strata movement controlling in fully mechanized backfilling mining was more effective, the surface buildings and facilities were not severely influenced. The above achievements could provide technical reference for the successful implementation of fully mechanized backfilling mining.
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References
J. A. Wang, X. C. Shang, and H. T. Ma, “Investigation of catastrophic ground collapse in Xingtai gypsum mines in China,” Int. J. Rock Mech. Min. Sci., 45 (2008).
J. H. Hwang and C. C. Lu, “A semi-analytical method for analyzing the tunnel water inflow,” Tunnel Underground Space Tech., 22 (2007).
Z. Guang, J. Ting-yao, and W. Shan, “Fly ash classification and its application in concrete,” Science and Technology of Overseas Building Materials., 28 (2007)
H. Le-ting, “Actuality and development keystones of mining under villages in Cchina,” Mine Surve, 04 (1999).
Z. Ji-xiong and M. Xie-xing, “Underground disposal of waste in coal mine,” Journal of China University of Mining & Technology, 35 (2006).
Z. Wen-hai, Z. Ji-xiong, Z. Ji-sheng et al., “Research on waste filling technology and it’s matching equipment in coal mining,” Journal of Mining & Safety Engineering., 24 (2007).
Z. Ji-xiong, M. Xie-xing, and G. Guang-li, “Development status of backfilling technology using raw waste in coal mining,” Journal of Mining & Safety Engineering, 26 (2009).
Z. Ji-xiong, M. Xie-xing, M. Xian-biao, and C. Zhong-wei, “Research on waste substitution extraction of strip extraction coal-pillar mining,” Chinese Journal of Rock Mechanics and Engineering, 26 (2007).
Z. Ji-xiong, M. Xie-xing, and G. Guang-li, “Study on waste-filling method and technology in fullymechanized coal mining,” Journal of China Coal Society, 35 (2010).
M. Xie-xing and Z. Ji-xiong, “Analysis of strata behavior in the process of coal mining by Gangue backfilling,” Journal of Mining & Safety Engineering, 24 (2007).
S. F. Greb and G. A. Weisenfluh, “Paleoslumps in coal-bearing strata of the Breathitt Group (Pennsylvanian), Eastern Kentucky Coal Field, USA,” Int. J. Coal Geol., 31 (1996).
L. R. Alejano, P. Ramirez-Oyanguren, J. Taboada, “FDM predictive methodology for subsidence due to flat and inclined coal seam mining,” Int. J. Rock Mech. Min. Sci., 36 (1999).
R. Trueman, G. Lyman, and A. Cocker, “Longwall roof control through a fundamental understanding of shield-strata interaction,” Int. J. Rock Mech. Min. Sci., 46 (2009).
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Zhang, J., Zhou, N., Huang, Y. et al. Impact law of the bulk ratio of backfilling body to overlying strata movement in fully mechanized backfilling mining. J Min Sci 47, 73–84 (2011). https://doi.org/10.1134/S1062739147010096
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DOI: https://doi.org/10.1134/S1062739147010096