Geomechanics and Engineering

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Experimental research on the effect of water-rock interaction in filling media of fault structure

  • Faxu, Dong (State Key Laboratory of Mining Disaster Prevention and Control, College of Energy and Mining Engineering, Shandong University of Science and Technology) ;
  • Zhang, Peng (State Key Laboratory of Mining Disaster Prevention and Control, College of Energy and Mining Engineering, Shandong University of Science and Technology) ;
  • Sun, Wenbin (State Key Laboratory of Mining Disaster Prevention and Control, College of Energy and Mining Engineering, Shandong University of Science and Technology) ;
  • Zhou, Shaoliang (State Key Laboratory of Mining Disaster Prevention and Control, College of Energy and Mining Engineering, Shandong University of Science and Technology) ;
  • Kong, Lingjun (State Key Laboratory of Mining Disaster Prevention and Control, College of Energy and Mining Engineering, Shandong University of Science and Technology)
  • Received : 2019.12.09
  • Accepted : 2021.03.02
  • Published : 2021.03.10
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Abstract

Water damage is one of the five disasters that affect the safety of coal mine production. The erosion of rocks by water is a very important link in the process of water inrush induced by fault activation. Through the observation and experiment of fault filling samples, according to the existing rock classification standards, fault sediments are divided into breccia, dynamic metamorphic schist and mudstone. Similar materials are developed with the characteristics of particle size distribution, cementation strength and water rationality, and then relevant tests and analyses are carried out. The experimental results show that the water-rock interaction mainly reduces the compressive strength, mechanical strength, cohesion and friction Angle of similar materials, and cracks or deformations are easy to occur under uniaxial load, which may be an important process of water inrush induced by fault activation. Mechanical experiment of similar material specimen can not only save time and cost of large scale experiment, but also master the direction and method of the experiment. The research provides a new idea for the failure process of rock structure in fault activation water inrush.

Keywords

References

  1. Aksoy, C.O., Uyar, G.G. and Ozcelik, Y. (2016), "Comparison of Hoek-Brown and Mohr-Coulomb failure criterion for deep open coal mine slope stability", Struct. Eng. Mech., 60(5), 809-828. https://doi.org/10.12989/sem.2016.60.5.809.
  2. Das A.J., Mandal P.K., Sahu S.P., Kushwaha A., Bhattacharjee R. and Tewari S. (2018), "Evaluation of the effect of fault on the stability of underground workings of coal mine through DEM and statistical analysis", J. Geol. Soc. India, 92(6), 732-742. https://doi.org/10.1007/s12594-018-1096-2.
  3. Feng, F., Chen, S.J., Li, D.Y., Hu, S.T., Huang, W.P. and Li, B. (2019), "Analysis of fractures of a hard rock specimen via unloading of central hole with different sectional shapes", Energy Sci. Eng., 7(6), 2265-2286. https://doi.org/10.1002/ESE3.432.
  4. GB/T 17412.2-1998 (1998), Classification and namenclature schemes of the rocks, State Administration for Market Regulation, China.
  5. Khoshnoudian, F., Ahmadi, E., Sohrabi, S. and Kiani, M. (2014), "Higher-mode effects for soil-structure systems under different components of near-fault ground motions", Earthq. Struct., 7(1), 83-99. https://doi.org/10.12989/eas.2014.7.1.083.
  6. Kristensen, T.B., Rotevatn, A., Peacock, D.C., Henstra, G.A., Midtkandal, I. and Grundvag, S.A. (2016), "Structure and flow properties of syn-rift border faults: The interplay between fault damage and fault-related chemical alteration (Dombjerg Fault, Wollaston Forland, NE Greenland)", J. Struct. Geol., 92, 99-115. https://doi.org/10.1016/j.jsg.2016.09.012.
  7. Li, S., Feng, X., Li, L. and Li, G. (2010), "Research and development of a new similar material for solid-fluid coupling and its application", Chin. J. Rock Mech. Eng., 29(2), 281-288.
  8. Liu, F., Guo, Z., Lv, H. and Cheng, Z. (2018), "Test and analysis of blast wave in mortar test block", Int. J. Rock Mech. Min. Sci., 108, 80-85. https://doi.org/10.1016/j.ijrmms.2018.06.003.
  9. Mazloom, M., Homayooni, S.M. and Miri, S.M. (2018), "Effect of rock flour type on rheology and strength of self-compacting lightweight concrete", Comput. Concrete, 21(2), 199-207. https://doi.org/10.12989/cac.2018.21.2.199.
  10. Ngo, C. and Natowitz, J.B. (2016), Coal in Our Energy Future, John Wiley & Sons, Inc. Hoboken, New Jersey, U.S.A.
  11. Quevedo, F.P. Bernaud, D. (2018), "Parametric study of the convergence of deep tunnels with long term effects, Abacuses", Geomech. Eng., 15(4), 973-986. https://doi.org/10.12989/gae.2018.15.4.973.
  12. Schopfer, M.P., Childs, C., Walsh, J.J. and Manzocchi, T. (2016), "Evolution of the internal structure of fault zones in three-dimensional numerical models of normal faults", Tectonophysics, 666, 158-163. https://doi.org/10.1016/j.tecto.2015.11.003.
  13. Scottt, A.C. and Mao, B.Z. (1993), "The coal geology of China" Geology Today, 9(1), 14-18. https://doi.org/10.1111/j.1365-2451.1993.tb00969.x.
  14. Uyar, G.G. and Babayigit, E. (2016), "Guided wave formation in coal mines and associated effects to buildings", Struct. Eng. Mech., 60(6), 923-937. https://doi.org/10.12989/sem.2016.60.6.923.
  15. Valoroso, L., Chiaraluce, L. and Collettini, C. (2014), "Earthquakes and fault zone structure", Geology, 42(4), 343 346. https://doi.org/10.1130/G35071.1.
  16. Wu, J.W. and Liu, X.H. (2003), "In-situ measurement study and evaluation on water-resisting ability of rock mass in fault zone", Rock Soil Mech., 24(10),k 447-450. https://doi.org/10.16285/j.rsm.2003.s2.106.
  17. Wu, Q., Zhou, Y.J., Liu, J.T., Zhong, Y.P., Li, J.M. and Zhou, R.G. (2003), "The mechanical experiment study on lag mechanism of water-bursting of fault under coal seam", J. China Coal Soc., 28(6), 561-565. https://doi.org/10.1007/s11769-003-0003-x.
  18. Wu, X., Jiang, Y., Wang, G., Gong, B., Guan, Z. and Deng, T. (2019), "Performance of a new yielding rock bolt under pull and shear loading conditions", Rock Mech. Rock Eng., 52(9), 3401-3412. https://doi.org/10.1007/s00603-019-01779-8.
  19. Yin, D.W., Chen, S.J., Liu, X.Q. and Ma, H.F. (2018), "Effect of joint angle in coal on failure mechanical behavior of roof rockcoal combined body", Q. J. Eng. Geol. Hydroge., 51, 202-209. https://doi.org/10.1144/qjegh2017-041.
  20. Zhang, G.C., Wen, Z.J., Liang, S.J., Tan, Y.L., Tian, L., Zhao, Y.Q. and Zhao, D. S. (2019), "Ground response of a gob-side entry in a longwall panel extracting 17m-thick coal seam: A case study", Rock Mech. Rock Eng., 53(2), 497-516. https://doi.org/10.1007/s00603-019-01922-5.
  21. Zhang, Y., Cheng, Z. and Lv, H. (2019), "Study on failure and subsidence law of frozen soil layer in coal mine influenced by physical conditions", Geomech. Eng., 18(1), 97-109. https://doi.org/10.12989/gae.2019.18.1.97