Taking 91105 working face as the research object, the observation method
of water flowing fractured zone
and the layout of mining holes were determined by analyzing the field
geological structure. It was shown that the fractured zone height and the ratio given by the
measured method were 52.33 and 12.46, respectively. By the numerical simulation
method with the software of UDEC, the fractured zone height and the ratio were
42.5 and 10.12. By comparison of measured height data and UDEC numerical
simulation, there were some differences between the measured height and the
calculated results of UDEC numerical simulation method. The method of
simulation can be used as the technical basis for the design of waterproof coal
pillar in the future.
References
[1]
Wu, C., Wu, W., Yang, W., et al. (2010) Surveying on Two-Zone Height of Sublevel Strip Mining. Journal of Coal Science and Engineering (China), 16, 129-134. https://doi.org/10.1007/s12404-010-0204-8
[2]
Spivak, A. and Khazins, V. (2013) Variation in Fractured Zone Rigidity by Dynamic Effects. Doklady Earth Sciences, 449, 328-331. https://doi.org/10.1134/S1028334X13030082
[3]
Guo, W., Zou, Y. and Hou, Q. (2012) Fractured Zone Height of Long Wall Mining and Its Effects on the Overburden Aquifers. International Journal of Mining Science and Technology, 22, 603-606. https://doi.org/10.1016/j.ijmst.2012.08.001
[4]
Xu, J., Wang, X., Liu, W., et al. (2009) Effects of Primary Key Stratum Location on Height of Water Flowing Fractured Zone. Chinese Journal of Rock Mechanics & Engineering, 28, 380-385.
[5]
Qian, M. and Xu, J. (1998) Study on the “O Shape” Circle Distribution Characteristics of Mining Induced Fractures in the Overlaying Strata. Journal of China Coal Society, 23, 466-469.
[6]
Suo, Y. (2003) Characteristics of Ground Behavior of Fully Mechanized Caving Faces in Hard Thick Seams. Journal of Coal Science & Engineering, 12, 25-29.
[7]
Wang, H., Cheng, H. and Liu, S. (2007) Research on Timely Detection Technology of Water Conducting Fractured Zone Based on parallel Resistivity Method. Safety in Coal Mines, No. 7, 1-6.
[8]
Liu, W., Liu, S., Huo, Z. and Li, L. (2014) Study on Simulation and Testing Technology for the Development of Roof Water-Conducting Crack Zone. Geotechnical Investigation & Surveying, No. 11, 1-5.
[9]
Sun, X., Li, P., Kou, Q., Fu, H., Li, C. and Miao, L. (2018) Simulation Experiment on Development Height of Water-Conducting Fractured Zone in Extra-Thick Coal Seam. Coal Technology, 37, 1-2.
[10]
Xiao, L., Wang, Z., Wei, J., Niu Chao, Li, S. and Zhang, H. (2018) Study on the Development Law of Mining-Induced Fractures in Overlying Strata of Shallow Coal Seam with Thin Bedrock. Coal Technology, 37, 1-4.
