Geomechanics and Engineering

  • 제20권6호
  • /
  • Pages.547-556
  • /
  • 2020
  • /
  • 2005-307X(pISSN)
  • /
  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

The influence of magmatic rock thickness on fracture and instability law of mining surrounding rock

  • Xue, Yanchao (School of Resources & Civil Engineering, Northeastern University) ;
  • Sun, Wenbin (College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Wu, Quansen (Department of Chemistry and Chemical Engineering, Jining University)
  • 투고 : 2019.10.21
  • 심사 : 2020.02.27
  • 발행 : 2020.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

An understanding of the influence of MR (Magmatic Rock) thickness on the surrounding rock behaviors is essential for the prevention and management of dynamic disasters in coal mining. In this study, we used FLC3D to study the breaking and instability laws of surrounding rock with different MR thicknesses in terms of strata movement, stress and energy. The mechanism of dynamic disasters was revealed. The results show that the thicker the MR is, (1) the smaller the subsidence of the overlying strata is, but the subsidence span of the overlying strata become wider, and the corresponding displacement deformation value of the basin edge become smaller. (2) the slower the growth rate of abutment pressure in front of the working face is, but the peak value is smaller, and the influence range is larger. The peak value decreases rapidly after the breaking, and the stress concentration coefficient is maintained at about 1.31. (3) the slower the peak energy in front of coal wall, but the range of energy concentration increases (isoline "O" type energy circle). Finally, a case study was conducted to verify the disaster-causing mechanism. We anticipate that the research findings presented herein can assist in the control of dynamic hazards.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, China Postdoctoral Science Foundation, Natural Science Foundation of Shandong Province, Shandong University of Science and Technology (SDUST)

This research was financially supported by the National Natural Science Foundation of China(Grant No.51974172) , China Postdoctoral Science Foundation (2015M572067), Postdoctoral Innovation Project of Shandong Province (152799), Qingdao Postdoctoral Applied Research Project (2015203), Natural Science Foundation of Shandong Province (ZR2019MEE004) and the Shandong University of Science and Technology (SDUST) Research Fund (2018TDJH102).

참고문헌

  1. Bischoff, M., Cete, A., Fritschen, R. and Meier, T. (2010), "Coal mining induced seismicity in the Ruhr area, Germany", Pure Appl. Geophys., 167(1-2), 63-75. http://dx.doi.org/10.1007/s00024-009-0001-8.
  2. Chen, S.J., Yin, D.W., Jiang, N., Wang, F. and Guo, W.J. (2019), "Simulation study on effects of loading rate on uniaxial compression failure of composite rock-coal layer", Geomech. Eng., 17(4), 333-342. https://doi.org/10.12989/gae.2019.17.4.333.
  3. Dewandel, B., Lachassagne, P., Zaidi, F.K. and Chandra, S. (2011), "A conceptual hydrodynamic model of a geological discontinuity in hard rock aquifers: Example of a quartz reef in granitic terrain in South India", J. Hydrol., 405(3-4), 474-487. https://doi.org/10.1016/j.jhydrol.2011.05.050.
  4. Dou, L.M., Mu, Z.L., Li, Z.L., Cao, A.Y. and Gong, S.Y. (2014), "Research progress of monitoring, forecasting, and prevention of rockburst in underground coal mining in China", Int. J. Min. Sci. Technol., 1(3). https://doi.org/10.1007/s40789-014-0044-z.
  5. Domanski, B. and Gibowicz, S.J. (2008), "Comparison of source parameters estimated in the frequency and time domains for seismic events at the Rudna copper mine, Poland", Acta Geophys., 56(2), 324-343. https://doi.org/10.2478/s11600-008-0014-1.
  6. Fu, T.F., Xu, T., Heap, M.J., Meredith, P.G. and Mitchell, T.M. (2020), "Mesoscopic time-dependent behavior of rocks based on three-dimensional discrete element grain-based model", Comput. Geotech., 121C, 103472. https://doi.org/10.1016/j.compgeo.2020.103472.
  7. Herget, G. (1987), "Stress assumptions for underground excavations in the canadian shield", Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 24(1), 95-97. https://doi.org/10.1016/0148-9062(87)91238-1.
  8. Heal, D. (2010), "Observations and analysis of incidences of rockburst damage in underground mines", Ph.D. Dissertation, University of Western Australia, Perth, Australia.
  9. Itasca (2012), Fast Lagrangian analysis of Continua, Itasca Consulting Group Inc, Minneapolis, Minnesota, U.S.A.
  10. Jiang, L.S., Wu, Q.S., Wu, Q.L., Wang, P., Xue, Y.C., Kong, P. and Gong, B. (2019), "Fracture failure analysis of hard and thick key layer and its dynamic response characteristics", Eng. Fail Anal., 98, 118-130. https://doi.org/10.1016/j.engfailanal.2019.01.008.
  11. Jiang, J.Q., Wang P., Wu Q.L and Zhang P.P. (2015), "Evolution laws and prediction of separated stratum space under overlying high-position magmatic rocks", Chin. J. Geotech. Eng., 37(10), 1769-1779. https://doi.org/10.11779/CJGE201510004.
  12. Keneti, A. and Sainsbury, B.A. (2018), "Characterization of strain-burst rock fragments under a scanning electron microscope - An illustrative study", Eng. Geol., 246, 12-18. https://doi.org/10.1016/j.enggeo.2018.09.025.
  13. Konicek, P., Soucek, K., Stas, L. and Singh, R. (2013), "Long-hole destress blasting for rockburst control during deep underground coal mining", Int. J. Rock Mech. Min. Sci., 61, 141-153. https://doi.org/10.1016/j.ijrmms.2013.02.001.
  14. Liu, X.J. and Cheng, Z.B. (2019), "Changes in subsidence-field surface movement in shallow-seam coal mining", J. S. Afr. I. Min. Metall., 119(2), 201-206. https://doi.org/10.17159/2411-9717/2019/v119n2a12.
  15. Lu, C.P., Liu, Y., Wang, H.Y. and Liu, P.F. (2016), "Microseismic signals of double-layer hard and thick igneous strata separation and fracturing", Int. J. Coal Geol., 160, 28-41. https://doi.org/10.1016/j.coal.2016.04.011.
  16. Mazaira, A. and Konicek, P. (2015), "Intense rockburst impacts in deep underground construction and their prevention", Can. Geotech. J., 52(10), 1426-1439. https://doi.org/10.1139/cgj-2014-0359.
  17. Nawrocki, P. (1990), "Rock burst initiation as an instability phenomenon", Arch. Gorn., 35(1), 115-159.
  18. Naji, A.M., Emad, M.Z., Rehman, H. and Yoo, H. (2019), "Geological and geomechanical heterogeneity in deep hydropower tunnels: A rock burst failure case study", Tunn. Undergr. Sp. Technol., 84, 507-521. https://doi.org/10.1016/j.tust.2018.11.009.
  19. Petrolito, J. (2014), "Vibration and stability analysis of thick orthotropic plates using hybrid-Trefftz elements", Appl. Math. Model., 38(24), 5858-5869. https://doi.org/10.1016/j.apm.2014.04.026.
  20. Qian M.G., Miu X.X. and Xu J.L (1996), "Theoretical study of key stratum in ground control", J. China Coal Sci., 21(03), 2-7. https://doi.org/10.13225/j.cnki.jccs.1996.03.001.
  21. Sadoun, M., Houari, M.S.A., Bakora, A., Tounsi, A., Mahmoud, S.R. and Alwabli, A.S. (2018), "Vibration analysis of thick orthotropic plates using quasi 3D sinusoidal shear deformation theory", Geomech. Eng., 16(2), 141-150. https://doi.org/10.12989/gae.2018.16.2.141.
  22. Sun, W.B., Xue, Y.C., Li, T.T. and Liu, W.T. (2019a), "Multi-field Coupling of Water Inrush Channel Formation in a Deep Mine with a Buried Fault", Mine Water Environ., 38(3), 528-535. https://doi.org/10.1007/s10230-019-00616-2.
  23. Sun, W.B., Xue, Y.C., Yin, L.M. and Zhang, J.M. (2019b), "Experimental study on seepage characteristics of large size rock specimens under three-dimensional stress", Geomech. Eng., 18(6), 567-574. https://doi.org/10.12989/gae.2019.18.6.567.
  24. Swift, G. (2014), "Relationship between joint movement and mining subsidence", Bull. Eng. Geol. Environ., 73(1), 163-176. https://doi.org/10.1007/s10064-013-0539-7.
  25. Sainoki, A. and Mitri, H.S. (2014), "Methodology for the interpretation of fault-slip seismicity in a weak shear zone", J. Appl. Geophys., 110(Nov), 126-134. https://doi.org/10.1016/j.jappgeo.2014.09.007.
  26. Sun, W.B. and Xue, Y.C. (2019), "An improved fuzzy comprehensive evaluation system and application for risk assessment of floor water inrush in deep mining", Geotech. Geol. Eng., 37(3), 1135-1145. https://doi.org/10.1007/s10706-018-0673-x.
  27. Tadisetty, S., Matsui, K., Shimada, H. and Gupta, R.N. (2006), "Real time analysis and forecasting of strata caving behaviour during longwall operations", Rock Mech. Rock Eng., 39(4), 383-393. https://doi.org/10.1007/s00603-005-0077-0.
  28. Wang, W., Cheng, Y.P., Wang, H.F., Liu, H.Y., Wang, L., Li, W. and Jiang, J.Y. (2015), "Fracture failure analysis of hard-thick sandstone roof and its controlling effect on gas emission in underground ultra-thick coal extraction", Eng. Fail. Anal., 54, 150-162. https://doi.org/10.1016/j.engfailanal.2015.04.016.
  29. Wu, Q.L., Wu, Q.S., Xue, Y.C., Kong, P. and Gong, B. (2018), "Analysis of overlying strata movement and disaster-causing effects of coal mining face under the action of hard thick magmatic rock", Processes, 6(9), https://doi.org/10.3390/pr6090150.
  30. Wang L., Cheng Y.P., Xu, C., An, F.H., Jin, K. and Zhang, X.L. (2013), "The controlling effect of thick-hard igneousrock on pressure relief gas drainage and dynamic disasters in outburst coal seams", Nat. Hazards, 66(2), 1221-1241. https://doi.org/10.1007/s11069-012-0547-0.
  31. Xu, C., Fu, Q., Cui, X.Y., Wang, K., Zhao, Y.X. and Cai, Y.B. (2019), "Apparent-depth effects of the dynamic failure of thick hard rock strata on the underlying coal mass during underground mining", Rock Mech. Rock Eng., 52(5), 1565-1576. https://doi.org/10.1007/s00603-018-1662-3.
  32. Yu, X.Y., Xu, T., Heap, M., Zhou, G.L. and Baud, P. (2018) "Numerical approach to creep of rock based on the numerical manifold method", Int. J. Geomech., 18(11), 04018153. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001286.
  33. Zhang P.P., Jiang L.S., Liu X.F., Zhang Z.L. and Liu X. (2017), "Mining-induced overlying strata structure evolution characteristics and disaster-triggering under high level hard thick strata", J. Min. Saf. Eng., 34(5), 852-860. https://doi.org/10.13545/j.cnki.jmse.2017.05.005.
  34. Zhang R.B. (2014), "Fracturing migration rules of double thick-hard igneous in Yangliu Coal Mine", M.A. Dissertation, China Mining University, Beijing, China
  35. Zhou F., Sun W.B., Shao J.L., Kong L.J. and Geng X.Y. (2020a), "Experimental study on nano silica modified cement base grouting reinforcement materials", Geomech. Eng., 20(1), 67-73. https://doi.org/10.12989/gae.2019.18.6.567.
  36. Zhou, G.L., Xu, T., Heap, M.J., Meredith, P.G., Mitchell, T.M., Sesnic, A.S.Y. and Yuan, Y. (2020b), "A three-dimensional numerical meso-approach to modeling time- independent deformation and fracturing of brittle rocks", Comput. Geotech., 117, 103274. https://doi.org/10.1016/j.compgeo.2019.103274.
  37. Zhao, J.H., Yin, L.M. and Guo, W.J. (2018), "Stress-seepage coupling of cataclastic rock masses based on digital image technologies", Rock Mech. Rock Eng., 51(8), 2355-2372. https://doi.org/10.1007/s00603-018-1474-5.
  38. Zhao, J.H., Zhang, X.G., Jiang, N., Yin, L.M. and Guo, W.J. (2020), "Porosity zoning characteristics of fault floor under fluid-solid coupling", Bull. Eng. Geol. Environ. https://doi.org/10.1007/s10064-019-01701-0.

피인용 문헌

  1. Study on the Strata Movement Rule of the Ultrathick and Weak Cementation Overburden in Deep Mining by Similar Material Simulation: A Case Study in China vol.2020, 2020, https://doi.org/10.1155/2020/7356740
  2. Numerical Simulation on Non-Darcy Flow in a Single Rock Fracture Domain Inverted by Digital Images vol.2020, 2020, https://doi.org/10.1155/2020/8814327
  3. The Key Stratum Structure Morphology of Longwall Mechanized Top Coal Caving Mining in Extra-Thick Coal Seams: A Typical Case Study vol.2020, 2020, https://doi.org/10.1155/2020/7916729
  4. Numerical investigation on overburden migration behaviors in stope under thick magmatic rocks vol.22, pp.4, 2020, https://doi.org/10.12989/gae.2020.22.4.349
  5. Dynamic disaster control of backfill mining under thick magmatic rock in one side goaf: A case study vol.27, pp.10, 2020, https://doi.org/10.1007/s11771-020-4532-6
  6. Mechanical Mechanism and Propagation Law of Fissure-Tip Cracks of Large-Size Rock Specimens with Two Precut Fissures vol.2021, 2021, https://doi.org/10.1155/2021/8812902
  7. Research on theory, simulation and measurement of stress behavior under regenerated roof condition vol.26, pp.1, 2020, https://doi.org/10.12989/gae.2021.26.1.049
  8. Experimental Study on the Cement-Based Materials Used in Coal Mine Gas Extraction for Hole Sealing vol.6, pp.32, 2020, https://doi.org/10.1021/acsomega.1c02911