Geomechanics and Engineering

  • 제20권5호
  • /
  • Pages.461-474
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  • 2020
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR Code

Incompatible deformation and damage evolution of mixed strata specimens containing a circular hole

  • Yang, Shuo (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology) ;
  • Li, Yuanhai (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology) ;
  • Chen, Miao (State Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science and Technology) ;
  • Liu, Jinshan (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology)
  • 투고 : 2019.12.24
  • 심사 : 2020.02.12
  • 발행 : 2020.03.10
⟨ 이전 논문 다음 논문 ⟩

초록

Analysing the incompatible deformation and damage evolution around the tunnels in mixed strata is significant for evaluating the tunnel stability, as well as the interaction between the support system and the surrounding rock mass. To investigate this issue, confined compression tests were conducted on upper-soft and lower-hard strata specimens containing a circular hole using a rock testing system, the physical mechanical properties were then investigated. Then, the incompatible deformation and failure modes of the specimens were analysed based on the digital speckle correlation method (DSCM) and Acoustic Emission (AE) data. Finally, numerical simulations were conducted to explore the damage evolution of the mixed strata. The results indicate that at low inclination angles, the deformation and v-shaped notches inside the hole are controlled by the structure plane. Progressive spalling failure occurs at the sidewalls along the structure plane in soft rock. But the transmission of the loading force between the soft rock and hard rock are different in local. At high inclination angles, v-shaped notches are approximately perpendicular to the structure plane, and the soft and hard rock bear common loads. Incompatible deformation between the soft rock and hard rock controls the failure process. At inclination angles of 0°, 30° and 90°, incompatible deformations are closely related to rock damage. At 60°, incompatible deformations and rock damage are discordant due that the soft rock and hard rock alternately bears the major loads during the failure process. The failure trend and modes of the numerical results agree very well with those observed in the experimental results. As the inclination angles increase, the proportion of the shear or tensile damage exhibits a nonlinear increase or decrease, suggesting that the inclination angle of mixed strata may promote shear damage and restrain tensile damage.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

This research was supported by the National Basic Research Program of China (973 Program) Grant No. 2014CB046905 and the National Natural Science Foundation of China (No.51174197). Additionally, the authors are grateful to the anonymous reviewers of this article for their careful reading of our manuscript and their many helpful comments.

참고문헌

  1. Aliabadian, Z., Zhao, G.F., and Russell, A.R. (2019), "Crack development in transversely isotropic sandstone discs subjected to Brazilian tests observed using digital image correlation", Int. J. Rock Mech. Min. Sci., 119, 211-221. https://doi.org/10.1016/j.ijrmms.2019.04.004
  2. Bercakova, A., Melichar, R. and Soucek, K. (2019), "Mechanical properties and failure patterns of migmatized gneiss with metamorphic foliation under UCS test", Rock Mech. Rock Eng., 1-7. https://doi.org/10.1007/s00603-019-02012-2.
  3. Chen, S., Yin, D., Jiang, N., Wang, F. and Zhao, Z. (2019a), "Mechanical properties of oil shale-coal composite samples", Int. J. Rock Mech. Min. Sci., 123, 104120. https://doi.org/10.1016/j.ijrmms.2019.104120.
  4. Chen, Y., Zuo, J., Liu, D. and Wang, Z. (2019b), "Deformation failure characteristics of coal-rock combined body under uniaxial compression: Experimental and numerical investigations", Bull. Eng. Geol. Environ., 78(5), 3449-3464. https://doi.org/10.1007/s10064-018-1336-0.
  5. Chen, Z., He, C., Xu, G., Ma, G. and Wu, D. (2019c), "A case study on the asymmetric deformation characteristics and mechanical behavior of deep-buried tunnel in phyllite", Rock Mech. Rock Eng., 52(11), 4527-4545. https://doi.org/10.1007/s00603-019-01836-2.
  6. Cheng, J.L. (2018), "Study on mechanical behavior of deep composite rock and TBM entrapment prevention and control", Ph.D. Dissertation, China University of Mining and Technology, Xuzhou, China.
  7. Cheng, J.L., Yang, S.Q., Chen, K., Ma, D., Li, F.Y. and Wang, L.M. (2017), "Uniaxial experimental study of the acoustic emission and deformation behavior of composite rock based on 3D digital image correlation (DIC)", Acta Mechanica Sinica, 33(6), 999-1021. https://doi.org/10.1007/s10409-017-0706-3.
  8. Cheng, Z., Pan, W., Li, X. and Sun, W. (2019a), "Numerical simulation on strata behaviours of TCCWF influenced by coalrock combined body", Geomech. Eng., 19(3), 269-282. https://doi.org/10.12989/gae.2019.19.3.269.
  9. Cheng, Z., Yang, S., Li, L. and Zhang, L. (2019b), "Support working resistance determined on top-coal caving face based on coal-rock combined body", Geomech. Eng., 19(3), 255-268. https://doi.org/10.12989/gae.2019.19.3.255.
  10. Cho, J.W., Kim, H., Jeon, S. and Min, K.B. (2012), "Deformation and strength anisotropy of Asan gneiss, Boryeong shale, and Yeoncheon schist", Int. J. Rock Mech. Min. Sci., 50, 158-169. https://doi.org/ 10.1016/j.ijrmms.2011.12.004.
  11. Dong, W., Song, S., Zhang, B. and Yang, D. (2019), "SIF-based fracture criterion of rock-concrete interface and its application to the prediction of cracking paths in gravity dam", Eng. Fract. Mech., 221, 106686. https://doi.org/10.1016/j.engfracmech.2019.106686.
  12. Dong, W., Wu, Z., Zhou, X., Wang, N. and Kastiukas, G. (2017), "An experimental study on crack propagation at rock-concrete interface using digital image correlation technique", Eng. Fract. Mech., 171, 50-63. http://doi.org/10.1016/j.engfracmech.2016.12.003.
  13. Duan, K., Li, Y., Wang, L., Zhao, G. and Wu, W. (2019), "Dynamic responses and failure modes of stratified sedimentary rocks", Int. J. Rock Mech. Min. Sci., 122, 104060. https://doi.org/10.1016/j.ijrmms.2019.104060.
  14. Dutler, N., Nejati, M., Valley, B., Amann, F. and Molinari, G. (2018), "On the link between fracture toughness, tensile strength, and fracture process zone in anisotropic rocks", Eng. Fract. Mech., 201, 56-79. https://doi.org/10.1016/j.engfracmech.2018.08.017.
  15. Fortsakis, P., Nikas, K., Marinos, V. and Marinos, P. (2012), "Anisotropic behaviour of stratified rock masses in tunnelling", Eng. Geol., 141, 74-83. https://doi.org/10.1016/j.enggeo.2012.05.001.
  16. Gong, W., Peng, Y., Sun, X., He, M., Zhao, S., Chen, H. and Xie, T. (2015), "Enhancement of low-contrast thermograms for detecting the stressed tunnel in horizontally stratified rocks", Int. J. Rock Mech. Min. Sci., 74, 69-80. http://doi.org/10.1016/j.ijrmms.2014.12.002.
  17. Li, A., Dai, F., Xu, N., Gu, G. and Hu, Z. (2019a), "Analysis of a complex flexural toppling failure of large u0nderground caverns in layered rock masses", Rock Mech. Rock Eng., 52(9), 3157-3181. https://doi.org/10.1007/s00603-019-01760-5.
  18. Li, Y.H., Tang, X.J., Yang, S. and Chen, J. (2019b), "Evolution of the broken rock zone in the mixed ground tunnel based on the DSCM", Tunn. Undergr. Sp. Technol., 84, 248-258. https://doi.org/10.1016/j.tust.2018.11.017.
  19. Li, Y.H., Zhang, Q., Lin, Z. and Wang, X. (2016), "Spatiotemporal evolution rule of rocks fracture surrounding gob-side roadway with model experiments", Int. J. Min. Sci. Technol., 26(5), 895-902. https://doi.org/10.1016/j.ijmst.2016.05.031.
  20. Lisjak, A., Garitte, B., Grasselli, G., Muller, H. and Vietor, T. (2015), "The excavation of a circular tunnel in a bedded argillaceous rock (Opalinus Clay): Short-term rock mass response and FDEM numerical analysis", Tunn. Undergr. Sp. Technol., 45, 227-248. https://doi.org/10.1016/j.tust.2014.09.014.
  21. Liu, R., Huang, N., Jiang, Y., Jing, H. and Yu, L. (2020a), "A numerical study of shear-induced evolutions of geometric and hydraulic properties of self-affine rough-walled rock fractures", Int. J. Rock Mech. Min. Sci., 127, 104211. https://doi.org/10.1016/j.ijrmms.2020.104211.
  22. Liu, R., Wang, C., Li, B., Jiang, Y. and Jing, H. (2020b), "Modeling linear and nonlinear fluid flow through sheared rough-walled joints taking into account boundary stiffness", Comput. Geotech., 120, 103452. https://doi.org/10.1016/j.compgeo.2020.103452.
  23. Martin, C.D. (1997), "Seventeenth Canadian geotechnical colloquium: the effect of cohesion loss and stress path on brittle rock strength", Can. Geotech. J., 34(5), 698-725. https://doi.org/10.1139/t97-030.
  24. Meng, Z., Lu, P. and He, X. (2009), "Depositinonal structure planes and their influence on the mechanical properties of sedimentary rock mass", Coal Geol. Explor., 37(1), 33-37. https://doi.org/10.3969/j.issn.1001-1986.2009.01.007
  25. Mezger, F., Ramoni, M., Anagnostou, G., Dimitrakopoulos, A. and Meystre, N. (2017), "Evaluation of higher capacity segmental lining systems when tunnelling in squeezing rock", Tunn. Undergr. Sp. Technol., 65, 200-214. https://doi.org/10.1016/j.tust.2017.02.012.
  26. Selcuk, L. and Asma, D. (2019), "Experimental investigation of the rock-concrete bi materials influence of inclined interface on strength and failure behavior", Int. J. Rock Mech. Min. Sci., 123, 104119. https://doi.org/10.1016/j.ijrmms.2019.104119.
  27. Tien, Y.M., Kuo, M.C. and Juang, C.H. (2006), "An experimental investigation of the failure mechanism of simulated transversely isotropic rocks", Int. J. Rock Mech. Min. Sci., 43(8), 1163-1181. https://doi.org/10.1016/j.ijrmms.2006.03.011.
  28. Toth, A., Gong, Q. and Zhao, J. (2013), "Case studies of TBM tunneling performance in rock-soil interface mixed ground", Tunn. Undergr. Sp. Technol., 38, 140-150. https://doi.org/10.1016/j.tust.2013.06.001.
  29. Wang, D.J., Tang, H., Shen, P., Su, X. and Huang, L. (2019a), "Co-effects of bedding planes and parallel flaws on fracture evolution in anisotropic rocks", Eng. Geol., 264, 105382. https://doi.org/10.1016/j.enggeo.2019.105382.
  30. Wang, S., Sloan, S., Tang, C. and Zhu, W. (2012), "Numerical simulation of the failure mechanism of circular tunnels in transversely isotropic rock masses", Tunn. Undergr. Sp. Technol., 32, 231-244. https://doi.org/10.1016/j.tust.2012.07.003.
  31. Wang, Y., Tan, W., Liu, D., Hou, Z. and Li, C. (2019b), "On anisotropic fracture evolution and energy mechanism during marble failure under uniaxial deformation", Rock Mech. Rock Eng., 52(10), 3567-3583. https://doi.org/10.1007/s00603-019-01829-1.
  32. Yang, S.Q., Chen, M., Fang, G., Wang, Y.C., Meng, B., Li, Y.H. and Jing, H.W. (2018), "Physical experiment and numerical modelling of tunnel excavation in slanted upper-soft and lowerhard strata", Tunn. Undergr. Sp. Technol., 82, 248-264. https://doi.org/10.1016/j.tust.2018.08.049.
  33. Yang, S.Q., Hu, B. and Xu, P. (2019a), "Study on the damagesoftening constitutive model of rock and experimental verification", Acta Mechanica Sinica, 35(4), 786-798. https://doi.org/10.1007/s10409-018-00833-y.
  34. Yang, S.Q., Yin, P.F., Huang, Y.H. and Cheng, J.L. (2019b), "Strength, deformability and X-ray micro-CT observations of transversely isotropic composite rock under different confining pressures", Eng. Fract. Mech., 214, 1-20. https://doi.org/10.1016/j.engfracmech.2019.04.030.
  35. Zang, C.W., Chen, M., Zhang, G.C., Wang, K. and Gu, D.D. (2020), "Research on the failure process and stability control technology in a deep roadway: numerical simulation and field test", Energy Sci. Eng., 1-14. https://doi.org/10.1002/ese3.664.
  36. Zhang, G., Ranjith, P.G., Wu, B., Perera, M.S.A., Haque, A. and Li, D. (2019c), "Synchrotron X-ray tomographic characterization of microstructural evolution in coal due to supercritical $CO_{2}$ injection at in-situ conditions", Fuel, 255, 115696. https://doi.org/10.1016/j.fuel.2019.115696.
  37. Zhang, G., Ranjith, P.G., Liang, W., Haque, A., Perera, M.S.A. and Li, D. (2019a), "Stress-dependent fracture porosity and permeability of fractured coal: An in-situ X-ray tomography study", Int. J. Coal Geol., 213, 103279. https://doi.org/10.1016/j.coal.2019.103279.
  38. Zhang, G., Ranjith, P.G., Perera, M.S.A., Lu, Y. and Choi, X. (2019b), "Quantitative analysis of micro-structural changes in a bituminous coal after exposure to supercritical $CO_{2}$ and water", Nat. Resour. Res., 28(4), 1639-1660. https://doi.org/10.1007/s11053-019-09463-y.
  39. Zhong, H., Ooi, E.T., Song, C., Ding, T., Lin, G. and Li, H. (2014), "Experimental and numerical study of the dependency of interface fracture in concrete-rock specimens on mode mixity", Eng. Fract. Mech., 124, 287-309. https://doi.org/10.1016/j.engfracmech.2014.04.030.

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