DOI QR코드

DOI QR Code

Cooperative bearing behaviors of roadside support and surrounding rocks along gob-side

  • Tan, Yunliang (State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology) ;
  • Ma, Qing (College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Zhao, Zenghui (State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology) ;
  • Gu, Qingheng (College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Fan, Deyuan (College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Song, Shilin (College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Huang, Dongmei (State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology)
  • 투고 : 2018.11.17
  • 심사 : 2019.07.08
  • 발행 : 2019.07.20

초록

The bearing capacity of roadside support is the key problem in gob-side entry retaining technology. To study the cooperative bearing characteristics of the roof-roadside support-floor along the gob-side entry retaining, a mechanical model of the composite structure of the roof-roadside support-floor was first established. A method for determining the structural parameters of gob-side entry retaining was then proposed. Based on this model, adaptability analysis of roadside support was carried out. The results showed that the reasonable width of the gob-side entry roadway was inversely proportional to the mining height, and directly proportional to the bearing strength of the roof and floor. And the reasonable width of the "flexible-hard" roadside support was directly proportional to its own strength, and inversely proportional to the width of the gob-side entry retaining. When determining the position and size of the roadside support along the gob-side entry retaining, the surrounding rock environment should be fully considered. Measured results from case study also show the rationality of the model and calculation method.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Shandong Province Natural Science Foundation, China Postdoctoral Science Foundation

참고문헌

  1. Cording, E.J., Hashash, Y.M.A. and Oh, J. (2015), "Analysis of pillar stability of mined gas storage caverns in shale formations", Eng. Geol., 184, 71-80. https://doi.org/10.1016/j.enggeo.2014.11.001.
  2. Cui, L. and Fall, M. (2016), "An evolutive elasto-plastic model for cemented paste backfill", Comput. Geotech., 71, 19-29. https://doi.org/10.1016/j.compgeo.2015.08.013.
  3. Fan, D.Y., Liu, X.S., Tan, Y.L., Song, S.L., Gu, Q.H., Yan, L. and Xu, Q. (2019), "Roof cutting parameters design for gob-side entry in deep coal mine: A case study", Energies, 12, 2032. https://doi.org/10.3390/en12102032.
  4. Fu, Y.P., Song, X.M., Xing, P.W., Yan, G.C. and Li, Z.J. (2009), "Stability analysis on main roof key blocks in large mining height workface", J. Chin. Coal Soc., 34(8), 1027-1031.
  5. Guo, W.Y., Tan, Y.L., Yu, F.H., Zhao, T.B., Hu, S.C., Huang, D.M. and Qin, Z.W. (2018), "Mechanical behavior of rock-coal-rock specimens with different coal thicknesses", Geomech. Eng., 15(4), 1017-1027. https://doi.org/10.12989/gae.2018.15.4.1017.
  6. Guo, W.Y., Tan, Y.L., Zhao, T.B., Liu, X.M., Gu, Q.H. and Hu, S.C. (2016), "Compression creep characteristics and creep model establishment of Gangue", Geotech. Geol. Eng., 34(4), 1193-1198. https://doi.org/10.1007/s10706-016-0038-2.
  7. Han, C.L., Zhang, N., Li, G.C., Li, B.Y. and Wu, H. (2014), "Stability analysis of compound bearing structure of gob-side entry retaining with large mining height", Chin. J. Geotech. Eng., 36(5), 969-976.
  8. Ivanovic, A., Starkey, A., Neilson, R.D. and Rodger, A.A. (2003), "The influence of load on the frequency response of rock bolt anchorage", Adv. Eng. Softw., 34(11-12), 697-705. https://doi.org/10.1016/S0965-9978(03)00099-1.
  9. Jiang, B.Y., Gu, S.T., Wang, L.G., Zhang, G.C. and Li, W.S. (2019), "Strainburst process of marble in tunnel-excavation-induced stress path considering intermediate principal stress", J. Central South Univ., 26(4), 984-999. https://doi.org/10.1007/s11771-019-4065-z.
  10. Jiang, H., Mamadou, F. and Liang, C. (2016), "Yield stress of cemented paste backfill in sub-zero environments: Experimental results", Min. Eng., 92, 141-150. https://doi.org/10.1016/j.mineng.2016.03.014.
  11. Jiang, L., Zhang, P., Chen, L., Hao, Z., Sainoki, A., Mitri, H.S. and Wang, Q. (2017), "Numerical approach for goaf-side entry layout and yield pillar design in fractured ground conditions", Rock Mech. Rock Eng., 50(4), 1-23. https://doi.org/10.1007/s00603-017-1277-0.
  12. Kaiser, P.K. and Cai, M. (2012), "Design of rock support system under rockburst condition", J. Rock Mech. Geotech. Eng., 4(3), 215-227. https://doi.org/10.3724/SP.J.1235.2012.00215.
  13. Komurlu, E., Kesimal, A. and Demir, S. (2016), "Experimental and numerical study on determination of indirect (splitting) tensile strength of rocks under various load apparatus", Can. Geotech. J., 53(2), 545-564. https://doi.org/10.1139/cgj-2014-0356.
  14. Liu, X.S., Gu, Q.H., Tan, Y.L., Ning, J.G. and Jia, Z.C. (2019), "Mechanical characteristics and failure prediction of cement mortar with a sandwich structure", Minerals, 9(3), 143. https://doi.org/10.3390/min9030143.
  15. Liu, X.S., Ning, J.G., Tan, Y.L. and Gu, Q.H. (2016), "Damage constitutive model based on energy dissipation for intact rock subjected to cyclic loading", Int. J. Rock Mech. Min. Sci., 85, 27-32. https://doi.org/10.1016/j.ijrmms.2016.03.003.
  16. Liu, X.S., Tan, Y.L., Ning, J.G., Lu, Y.W. and Gu, Q.H. (2018), "Mechanical properties and damage constitutive model of coal in coal-rock combined body", Int. J. Rock Mech. Min. Sci., 110, 140-150. https://doi.org/10.1016/j.ijrmms.2018.07.020.
  17. Lyu, X.Z., Zhao, Z.H., Wang, X.J. and Wang, W.M. (2019), "Study on the permeability of weakly cemented sandstones", Geofluids, https://doi.org/10.1155/2019/8310128.
  18. Ma, Q., Tan, Y.L., Zhao, Z.H., Xu, Q., Wang, J. and Ding, K. (2018), "Roadside support schemes numerical simulation and field monitoring of gob-side entry retaining in soft floor and hard roof", Arab. J. Geosci., 11, 563. https://doi.org/10.1007/s12517-018-3904-9.
  19. Ma, S., Nemcik, J. and Aziz, N. (2014), "Simulation of fully grouted rockbolts in underground roadways using FLAC2D", Can. Geotech. J., 51(8), 911-920. https://doi.org/10.1139/cgj-2013-0338.
  20. Mazaira, M.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.
  21. Ning, J.G., Liu, X.S., Tan, J., Gu, Q.H., Tan, Y.L. and Wang, J. (2018), "Control mechanisms and design for a 'coal-backfillgangue' support system for coal mine gob-side entry retaining", Int. J. Oil Gas Coal T., 18(3-4), 444-465. https://doi.org/10.1504/IJOGCT.2018.093132
  22. Ning, J.G., Wang, J., Liu, X.S., Qian, K. and Sun, B. (2014), "Soft-strong supporting mechanism of gob-side entry retaining in deep coal seams threatened by rockburst", Int. J. Min. Sci. Technol., 24(6), 805-810. https://doi.org/10.1016/j.ijmst.2014.10.012.
  23. Pappas, D.M. and Mark, C. (1993), "Behavior of simulated longwall gob material", Report of Investigations, US Bureau of Mines.
  24. Pappas, D.M. and Mark, C. (1993), "Behavior of simulated longwall gob material", Report of Investigation, Bureau of Mines, RI-9458, US Department of the Interior.
  25. Paul, A., Singh, A.P., John, L.P., Ajoy, K.S. and Manoj, K. (2012), "Validation of RMR-based support design using roof bolts by numerical modeling for underground coal mine of Monnet Ispat, Raigarh, India-a case study", Arab. J. Geosci., 5(6), 1435-1448. https://doi.org/10.1007/s12517-011-0313-8.
  26. Qi, C.C, Chen, Q.S., Fourie, A. and Zhang, Q.L. (2018), "An intelligent modelling framework for mechanical properties of cemented paste backfill", Miner. Eng., 123(16), 16-27. https://doi.org/10.1016/j.mineng.2018.04.010.
  27. Recio-Gordo, D. and Jimenez, R. (2012), "A probabilistic extension to the empirical ALPS and ARMPS systems for coal pillar design", Int. J. Rock Mech. Min. Sci., 52, 181-187. http://dx.doi.org/10.1016%2Fj.ijrmms.2012.03.009. https://doi.org/10.1016/j.ijrmms.2012.03.009
  28. Schumacher, F.P. and Kim, E. (2014), "Evaluation of directional drilling implication of double layered pipe umbrella system for the coal mine roof support with composite material and beam element methods using FLAC3D", J. Min. Sci., 50(2), 335-348. https://doi.org/10.1134/S1062739114020173.
  29. Shi, G.Y. (2014), "Gateway retained along goaf technology with pier pillar backfilled with high water material in high gassy mine", Coal Sci. Tech., 42(7), 30-32.
  30. Song, Z.Q., Cui, Z.D., Xia, H.C., Tang, J.C. and Wen, Z.J. (2010), "The fundamental theoretical on the green safe no coal pillar mining model by mainly using coal gangue backfill", J. Chin. Coal Soc., 35(5), 705-710.
  31. Tan, Y.L., Gu, Q.H., Ning, J.G., Liu, X.S., Jia, Z.C. and Huang, D.M. (2019), "Uniaxial compression behavior of cement mortar and its damage-constitutive model based on energy theory", Materials, 12(8), 1309. https://doi.org/10.3390/ma12081309.
  32. Tan, Y.L., Yu, F.H., Ning, J.G. and Zhao, T.B. (2015), "Design and construction of entry retaining support along a gob-side under hard roof stratum", Int. J. Rock Mech. Min. Sci., 77, 115-121. http://dx.doi.org/10.1016%2Fj.ijrmms.2015.03.025. https://doi.org/10.1016/j.ijrmms.2015.03.025
  33. Thompson, B.D., Bawden, W.F. and Grabinsky, M.W. (2012), "In situ measurements of cemented paste backfill at the Cayeli Mine", Can. Geotech. J., 49(7), 755-772. https://doi.org/10.1139/t2012-040.
  34. Wang, J., Ning, J.G., Jiang, J.Q. and Bu, T.T. (2018), "Structural characteristics of strata overlying of a fully mechanized longwall face: A case study", J. South Afr. Inst. Min. Metall., 118(11), 1195-1204. http://dx.doi.org/10.17159/2411-9717/2018/v118n11a10.
  35. Wang, Y., Fall, M. and Wu, A. (2016), "Initial temperature-dependence of strength development and self-desiccation in cemented paste backfill that contains sodium silicate", Cement Concrete Compos., 67, 101-110. https://doi.org/10.1016/j.cemconcomp.2016.01.005
  36. Yang, H.Y., Cao, S.G., Wang, S.Q., Fan, Y.C., Wang, S. and Chen, X.Z. (2016), "Adaptation assessment of gob-side entry retaining based on geological factors", Eng. Geol., 209, 143-151. https://doi.org/10.1016/j.enggeo.2016.05.016.
  37. Yang, X.K., Xiong, R., Yang, F., Yin, H.Q. and Yang, T. (2015), "Laboratory investigation of the high temperature rheological property of activated coal gangue modified asphalt binder", Appl. Mech. Mater., 744-746, 1261-1265. https://doi.org/10.4028/www.scientific.net/AMM.744-746.1261
  38. 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", Quart. J. Eng. Geol. Hydrogeol., 51(2), 202-209. https://doi.org/10.1144/qjegh2017-041.
  39. Zhao, Z.H., Ma, Q., Chen, S.J., Ma, H. and Gao, X.J. (2018), "Prediction model of failure zone in roadway sidewall considering the lithologic effect of rock formation", Math. Prob. Eng., https://doi.org/10.1155/2018/9627564.
  40. Zhao, Z.H., Ma, Q., Tan, Y.L. and Gao, X.J. (2018), "Load transfer mechanism and reinforcement effect of segmentally yieldable anchorage in weakly consolidated soft rock", Simulation, 95(1), 83-96. https://doi.org/10.1177%2F0037549718770284. https://doi.org/10.1177/0037549718770284

피인용 문헌

  1. Deformation Caused by Dynamic Load and Support Requirements in a Deep Gob-Side Entry Rock Mass vol.2019, 2019, https://doi.org/10.1155/2019/4530954
  2. Deviation Effect of Coaxiality on the Rock Brazilian Split vol.2020, 2019, https://doi.org/10.1155/2020/5782457
  3. Study on Failure Modes and Energy Evolution of Coal-Rock Combination under Cyclic Loading vol.2020, 2019, https://doi.org/10.1155/2020/5731721
  4. A caving self-stabilization bearing structure of advancing cutting roof for gob-side entry retaining with hard roof stratum vol.21, pp.1, 2019, https://doi.org/10.12989/gae.2020.21.1.023
  5. Analysis of Stress Removal Effect of Borehole Depth and Position on Coal-Rock with Shock Tendency vol.38, pp.4, 2020, https://doi.org/10.1007/s10706-020-01281-x
  6. Study on the Development Height of Overburden Water-Flowing Fracture Zone of the Working Face vol.2021, 2019, https://doi.org/10.1155/2021/5570884
  7. Effects of interface angles on properties of rock-cemented coal gangue-fly ash backfill bi-materials vol.24, pp.1, 2021, https://doi.org/10.12989/gae.2021.24.1.081