Geomechanics and Engineering

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Study on rockburst prevention technology of isolated working face with thick-hard roof

  • Jia, Chuanyang (School of Civil Engineering and Architecture, Linyi University) ;
  • Wang, Hailong (School of Civil Engineering and Architecture, Linyi University) ;
  • Sun, Xizhen (School of Civil Engineering and Architecture, Linyi University) ;
  • Yu, Xianbin (School of Civil Engineering and Architecture, Linyi University) ;
  • Luan, Hengjie (College of Mining and Safety Engineering, Shandong University of Science and Technology)
  • Received : 2019.10.23
  • Accepted : 2020.02.12
  • Published : 2020.03.10
⟨ Previous Next ⟩

Abstract

Based on the literature statistical method, the paper publication status of the isolated working face and the distribution of the rockburst coal mine were obtained. The numerical simulation method is used to study the stress distribution law of working face under different mining range. In addition, based on the similar material simulation test, the overlying strata failure modes and the deformation characteristics of coal pillars during the mining process of the isolated working face with thick-hard key strata are analyzed. The research shows that, under the influence of the key strata, the overlying strata formation above the isolated working face is a long arm T-type spatial structure. With the mining of the isolated working face, a series of damages occur in the coal pillars, causing the key strata to break and inducing the rockburst occurs. Combined with the mechanism of rockburst induced by the dynamic and static combined load, the source of dynamic and static load on the isolated working face is analyzed, and the rockburst monitoring methods and the prevention and control measures are proposed. Through the above research, the occurrence probability of rockburst can be effectively reduced, which is of great significance for the safe mining of deep coal mines.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China, Natural Science Foundation of Shandong Province

The research described in this paper was financially supported by the National Natural Science Foundation of China (No. 51704152, No. 51904149), the Natural Science Foundation of Shandong Province (No. ZR2017PEE018, ZR2019BEE013, ZR2019BEE065, and No. ZR2017BEE001).

References

  1. Christopher, M. (2016), "Coal bursts in the deep longwall mines of the United States", Int. J. Coal Sci. Technol., 3(1), 1-9. https://doi.org/10.1007/s40789-016-0102-9.
  2. Dou, L.M. and He, H. (2012), "Study of OX-F-T spatial structure evolution of overlying strata in coal mines", Chin. J. Rock Mech. Eng., 31(3), 453-460. https://doi.org/10.3969/j.issn.1000-6915.2012.03.003.
  3. Dou, L.M., He, J. and Cao, A.Y. (2015), "Rock burst prevention methods based on theory of dynamic and static combined load induced in coal mine", J. China Coal Soc., 40(7), 1469-1476. https://doi.org/10.13225/j.cnki.jccs.2014.1815.
  4. Dou, L.M., Lu, C.P., Mu, Z.L. and Gao, M.S. (2009), "Prevention and forecasting of rock burst hazards in coal mines", Min. Sci. Technol., 19, 585-591. https://doi.org/10.3969/j.issn.2095-2686.2009.05.007.
  5. Duan, K. and Kwok, C.Y. (2016), "Evolution of stress-induced borehole breakout in inherently anisotropic rock: Insights from discrete element modeling", J. Geophys. Res. Solid Earth, 121(4), 2361-2381. https://doi.org/10.1002/2015JB012676.
  6. Frid, V. (2001), "Calculation of electromagnetic radiation criterion for rockburst hazard forecast in coal mines", Pure Appl. Geophys., 158(5-6), 931-944. https://doi.org/10.1007/PL00001214.
  7. Guo, L.W., Latham, J. and Xiang, J.S. (2017), "A numerical study of fracture spacing and through-going fracture formation in layered rocks", Int. J. Solids Struct., 110-111, 44-57. https://doi.org/10.1016/j.ijsolstr.2017.02.004.
  8. Guo, W.J., Li, Y.Y., Yin, D.W., Zhang, S.C. and Sun, X.Z. (2016), "Mechanisms of rock burst in hard and thick upper strata and rock-burst controlling technology", Arab. J. Geosci., 9(10), 561. https://doi.org/10.1007/s12517-016-2596-2.
  9. Guo, W.Y., Gu, Q.H., Tan, Y.L. and Hu, S.C. (2019), "Case studies of rock bursts in tectonic areas with facies change", Energies, 12(7), 1-11. https://doi.org/10.3390/en12071330.
  10. Guo, W.Y., Yu, F.H., Tan, Y.L. and Zhao, T.B. (2019), "Experimental study on the failure mechanism of layer-crack structure", Energy Sci. Eng., 7(4), 2351-2372. https://doi.org/10.1002/ese3.407.
  11. He, H., Dou, L.M., Gong, S., Zhou, P. and Xue, Z. (2010), "Rock burst rules induced by cracking of overlying key strata", Chin. J. Geotech. Eng., 32(8), 1260-1265. https://doi.org/10.1016/S1876-3804(11)60004-9.
  12. He, X.Q., Chen, W.X. and Nie, B.S. (2011), "Electromagnetic emission theory and its application to dynamic phenomena in coalrock", Int. J. Rock Mech. Min. Sci., 48(8), 1352-1358. https://doi.org/10.1016/j.ijrmms.2011.09.004.
  13. Jiang, F.X., Miao, X.H. and Wang, C.W. (2010), "Predicting research and practice of tectonic-controlled coal burst by microseismic monitoring", J. China Coal Soc., 35(6), 900-904. https://doi.org/10.1016/S1876-3804(11)60004-9.
  14. Jiang, J.Q. and Xu, B. (2018), "Study on the development laws of bed-separation under the hard-thick magmatic rock and its fracture disaster-causing mechanism", Geotech. Geol. Eng., 36(3), 1525-1543. https://doi.org/10.1007/s10706-017-0406-6.
  15. Khademian, Z., Nakagawa, M. and Ozbay, U. (2018), "Modeling injection-induced seismicity through calculation of radiated seismic energy", J. Nat. Gas Sci. Eng., 52, 582-590. https://doi.org/10.1016/j.jngse.2018.02.013.
  16. Lawson, H.E., Tesarik, D., Larson, M.K. and Abraham, H. (2017), "Effects of overburden characteristics on dynamic failure in underground coal mining", Int. J. Min. Sci. Technol., 27(1), 121-129. https://doi.org/10.1016/j.ijmst.2016.10.001.
  17. Lee, H., Moon, T. and Haimson, B.C. (2016), "Borehole breakouts induced in arkosic sandstones and a discrete element analysis", Rock Mech. Rock Eng., 49(4), 1369-1388. https://doi.org/10.1007/s00603-015-0812-0.
  18. Li, Y.S. (1985), "Rockburst mechanism and its preliminary application", J. China Univ. Min. Technol., 3, 42-48. https://doi.org/CNKI:SUN:ZGKD.0.1985-03-005.
  19. Li, Z.L., Dou, L.M. and Wang, G.F. (2014), "Rock burst characteristics and mechanism induced within an island pillar coalface with hard roof", J. Min. Saf. Eng., 41(4), 519-524. https://doi.org/10.13545/j.issn1673-3363.2014.04.004.
  20. Linkov, A.M. (2005), "Numerical modeling of seismic and aseismatic events in geomechanics", J. Min. Sci., 41(1), 14-26. https://doi.org/10.1007/s10913-005-0059-3.
  21. 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., 160-161, 28-41. https://doi.org/10.1016/j.coal.2016.04.011.
  22. Meier, T, Rybacki, E., Reinicke, A. and Dresen, G. (2013), "Influence of borehole diameter on the formation of borehole breakouts in black shale", Int. J. Rock Mech. Min. Sci., 62, 74-85. https://doi.org/10.1016/j.ijrmms.2013.03.012.
  23. Meier, T, Rybacki, E., Reinicke, A. and Dresen, G. (2015), "Influence of bedding angle on borehole stability: A laboratory investigation of transverse isotropic oil shale", Rock. Mech. Rock. Eng., 48(4), 1535-1546. https://doi.org/10.1007/s00603-014-0654-1.
  24. Mitri, H.S. (2007), "Assessment of horizontal pillar burst in deep hard rock mines", Int. J. Risk Assess. Manage., 7(5), 695-707. https://doi.org/10.1504/IJRAM.2007.014094.
  25. Mu, Z.L., Dou, L.M., Zhang, G.W., Zhang, S.B., Li, Z.H. and Zhang, J. (2006), "Study of prevention methods of rock burst disaster caused by hard rock roof", J. China Univ. Min. Technol., 35(6), 737-741. https://doi.org/10.1093/carcin/bgm010.
  26. Ning, J.G., Wang, J. and Jiang, L.S. (2017), "Fracture analysis of double-layer hard and thick roof and the controlling effect on strata behavior: A case study", Eng. Fail. Anal., 81, 117-134. https://doi.org/10.1016/j.engfailanal.2017.07.029.
  27. Pan, J.F., Qin, Z.H., Wang, S.W., Yong, X. and Feng, M.H. (2015), "Preliminary study on early warning method based on weight comprehensive and different-load sources of coal bump", J. China Coal Soc., 40(10), 2327-2335. https://doi.org/10.13225/j.cnki.jccs.2015.6012.
  28. Panthi, K.K. (2012), "Evaluation of rock bursting phenomena in a tunnel in the Himalayas", Bull. Eng. Geol. Environ., 71(4), 761-769. https://doi.org/10.1007/s10064-012-0444-5.
  29. Qian, M.G., Miao, X.X. and Xu, J.L. (1996), "Theoretical study of the key strata in ground control", J. China Coal Soc., (03), 225-230. https://doi.org/10.13225/j.cnki.jccs.1996.03.001.
  30. Sahara, D.P., Schoenball, M., Gerolymatou, E. and Kohl, T. (2017), "Analysis of borehole breakout development using continuum damage mechanics", Int. J. Rock Mech. Min. Sci., 97, 134-143. https://doi.org/10.1016/j.ijrmms.2017.04.005.
  31. Sainoki, A. and Hani, S.M. (2015a), "Effect of slip-weakening distance on selected seismic source parameters of mininginduced fault-slip", Int. J. Rock Mech. Min. Sci., 73, 115-122. https://doi.org/10.1016/j.ijrmms.2014.09.019.
  32. Sainoki, A. and Hani, S.M. (2015b), "Evaluation of fault-slip potential due to shearing of fault asperities", Can. Geotech. J., 52(10), 1417-1425. https://doi.org/10.1139/cgj-2014-0375.
  33. Song, D.Z., Wang, E.Y., Liu, Z.T., Liu. X.F. and Shen, R.X. (2014), "Numerical simulation of rock-burst relief and prevention by water-jet cutting", Int. J. Rock Mech. Min. Sci., 70, 318-331. https://doi.org/10.1016/j.ijrmms.2014.05.015.
  34. Stec, K. (2007), "Characteristics of seismic activity of the upper silesian coal basin in Poland", Geophys. J. Int., 168(2), 757-768. https://doi.org/10.1111/j.1365-246X.2006.03227.x.
  35. Tan, Y.L., Liu, X.S. and Shen, B. (2018), "New approaches to testing and evaluating the impact capability of coal seam with hard roof and/or floor in coal mines", Geomech. Eng, 14(4), 367-376. https://doi.org/10.12989/gae.2018.14.4.367.
  36. Vardhan, H., Adhikari, G.R. and Raj, M.G. (2009), "Estimating rock properties using sound levels produced during drilling", Int. J. Rock Mech. Min. Sci., 46(3), 604-612. https://doi.org/10.1016/j.ijrmms.2008.07.011.
  37. Wang, C.L., Chuai, X.S. and Shi, F. (2018), "Experimental investigation of predicting rockburst using Bayesian model", Geomech. Eng., 15(6), 1153-1160. https://doi.org/10.12989/gae.2018.15.6.1153.
  38. Zhang, C.G., Canbulat, I. and Hebblewhite, B. (2017), "Assessing coal burst phenomena in mining and insights into directions for future research", Int. J. Coal Geol., 179, 28-44. https://doi.org/10.1016/j.coal.2017.05.011.
  39. Zhang, H., Chen, L., Chen, S.G., Sun, J.C. and Yang, J.S. (2018), "The spatio temporal distribution law of microseismic events and rockburst characteristics of the deeply buried tunnel group", Energies, 11(12), 3257. https://doi.org/10.3390/en11123257.

Cited by

  1. Mechanism of Coal Burst and Prevention Practice in Deep Asymmetric Isolated Coal Pillar: A Case Study from YaoQiao Coal Mine vol.2021, 2020, https://doi.org/10.1155/2021/3751146