Geomechanics and Engineering

  • 제28권2호
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  • Pages.181-195
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  • 2022
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

An experimental study on triaxial failure mechanical behavior of jointed specimens with different JRC

  • Tian, Wen-Ling (State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology) ;
  • Yang, Sheng-Qi (State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology) ;
  • Dong, Jin-Peng (State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology) ;
  • Cheng, Jian-Long (State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology) ;
  • Lu, Jia-wei (State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology)
  • 투고 : 2021.05.12
  • 심사 : 2021.10.23
  • 발행 : 2022.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

Roughness and joint inclination angle are the important factors that affect the strength and deformation characteristics of jointed rock mass. In this paper, 3D printer has been employed to make molds firstly, and casting the jointed specimens with different joint roughness coefficient (JRC), and different joint inclination angle (α). Conventional triaxial compression tests were carried out on the jointed specimens, and the influence of JRC on the strength and deformation parameters was analyzed. At the same time, acoustic emission (AE) testing system has been adopted to reveal the AE characteristic of the jointed specimens in the process of triaxial compression. Finally, the morphological of the joint surface was observed by digital three-dimensional video microscopy system, and the relationship between the peak strength and JRC under different confining pressures has been discussed. The results indicate that the existence of joint results in a significant reduction in the strength of the joint specimen, JRC also has great influence on the morphology, quantity and spatial distribution characteristics of cracks. With the increase of JRC, the triaxial compressive strength increase, and the specimen will change from brittle failure to ductile failure.

키워드

과제정보

This research was supported by the National Natural Science Foundation of China (42107159, 51909260) and Fundamental Research Funds for the Central Universities (2021ZDPYJQ002).

참고문헌

  1. Abolfazli, M. and Fahimifarb, A. (2020), "An investigation on the correlation between the joint roughness coefficient (JRC) and joint roughness parameters", Constr. Build. Mater., 259, 120415. https://doi.org/10.1016/j.conbuildmat.2020.120415.
  2. An, M.K., Zhang, F.S., Elsworth, D., Xu, Z.Y., Chen, Z.W. and Zhang, L.Y. (2020), "Friction of longmaxi shale gouges and implications for seismicity during hydraulic fracturing", J. Geophys. Res. Solid Earth, 125(8), 1-20. https://doi.org/10.1029/2020JB019885.
  3. Bahaaddini, M., Hagan, P.C., Mitra, R. and Khosravi, M.H. (2016), "Experimental and numerical study of asperity degradation in the direct shear test", Eng. Geol., 204, 41-52. https://doi.org/10.1016/j.enggeo.2016.01.018
  4. Ban, L.R., Du, W.S., Jin, T.W., Qi C.Z. and Li X.Z. (2021), "A roughness parameter considering joint material properties and peak shear strength model for rock joints", Int. J. Min. Sci. Technol., 31, 413-420. https://doi.org/10.1016/j.ijmst.2021.03.007.
  5. Barton, N. (1973), "Review of a new shear-strength criterion for rock joints", Eng. Geol., 7(4), 287-332. https://doi.org/10.1016/0013-7952(73)90013-6.
  6. Barton, N., Choubey, V. (1977), "The shear strength of rock joints in theory and practice", Rock Mechanics, 10(1-2), 1-54. https://doi.org/10.1007/BF01261801
  7. Cai, M., Hou, P.Y., Zhang X.W. and Feng X.T. (2021), "Post-peak Stress-Strain curves of brittle hard rocks under axial-strain-controlled loading", Int. J. Rock Mech. Min. Sci., 14, 104921. https://doi.org/10.1016/j.ijrmms.2021.104921
  8. Cai, M.F. (2002), "Rock mechanics rock engineering", 8, 21-21.
  9. Diamantis, K. (2019), "Estimation of tensile strength of ultramafic rocks using indirect approaches", Geomech. Eng., 17(3), 261-270. https://doi.org/10.12989/gae.2019.17.3.261.
  10. Elsworth, D., Spiers, C.J. and Niemeijer, A.R. (2016), "Understanding induced seismicity", Science, 354(6318), 1380-1381. https://doi.org/10.1126/science.aal2584
  11. Grasselli, G. (2006), "Manuel rocha medal recipient shear strength of rock joints based on quantified surface description", Rock Mech. Rock Eng., 39(4), 295. https://doi.org/10.1007/s00603-006-0100-0.
  12. Grasselli, G., Wirth, J. and Egger, P. (2002), "Quantitative three-dimensional description of a rough surface and parameter evolution with shearing", Int. J. Rock Mech. Min. Sci., 39(6), 789-800. https://doi.org/10.1016/S1365-1609(02)00070-9.
  13. Grasselli, G. and Egger, P., (2003), "Constitutive law for the shear strength of rock joints based on three-dimensional surface parameters", Int. J. Rock Mech. Min. Sci., 40(1), 25-40. https://doi.org/10.1016/S1365-1609(02)00101-6.
  14. Guo, S.F. and Qi, S.W. (2015), "Numerical study on progressive failure of hard specimens with an unfilled undulated joint", Eng. Geol., 193, 173-182. https://doi.org/10.1016/j.enggeo.2015.04.023.
  15. Haberifield, C. and Johnston, I. (1994), "A mechanistically-based model for rough rock joints", Int. J. Rock Mech. Min. Sci., 39, 731-741. https://doi.org/10.1016/0148-9062(94)90898-2.
  16. He, L., Zhao, Z., Chen, J. and Liu, D. (2020), "Empirical shear strength criterion for rock joints based on joint surface degradation characteristics during shearing", Rock Mech. Rock Eng., 53, 3609-3624. https://doi.org/10.1007/s00603-020-02120-4.
  17. Hojat, N., Saeed, K.N. and Hossein, J. (2021), "Geostatistical algorithm for evaluation of primary and secondary roughness", Geomech. Eng., 24, 359-370. https://doi.org/10.12989/gae.2021.24.4.359.
  18. Jaeger, J.C. and Cook N. (1979), "Fundamentals of rock mechanics. Third edition", Science Paperbacks, 9(3), 251-252(2). https://doi.org/10.1111/j.1468-8123.2009.00251.x.
  19. Jafari, M.K., Hosseini, K.A., Pellet, F., Boulon, M. and Buzzi, O. (2003), "Evaluation of shear strength of rock joints subjected to cyclic loading", Soil Dynam. Earthq. Eng., 23(7), 619-630. https://doi.org/10.1016/S0267-7261(03)00063-0.
  20. Lee, H., Oh, T.M. and Park, C., (2020), "Analysis of permeability in rock fracture with effective stress at deep depth", Geomech. Eng., 22(5), 375-384. https://doi.org/10.12989/gae.2020.22.5.375.
  21. Mamen, B. and Hammoud, F. (2021), "Microstructural observations of shear zones at cohesive soil-steel interfaces under large shear displacements", Geomech. Eng., 25(4), 275-281. https://doi.org/10.12989/gae.2021.25.4.275.
  22. Marsch, K. and Fernandez-Steeger, T.M. (2021), "Comparative evaluation of statistical and fractal approaches for jrc calculation based on a large dataset of natural rock traces", Rock Mech. Rock Eng., 54, 1897-1917. https://doi.org/10.1007/s00603-020-02348-0
  23. Park J.W. and Song J.J. (2013), "Numerical method for the determination of contact areas of a rock joint under normal and shear loads", Int. J. Rock Mech. Min. Sci., 58, 8-22. https://doi.org/10.1016/j.ijrmms.2012.10.001.
  24. Patton, F.D. (1966), "Multiple modes of shear failure in rock", Proceeding of the Congress of International Society of Rock Mechanics, 509-513.
  25. Renaud, S., Tarik, S., Bouaanani, N., Miquel, B., Quirion, M. and Rivard, P. (2019), "Roughness effects on the shear strength of concrete and rock joints in dams based on experimental data", Rock Mech. Rock Eng., 52, 3867-3888. https://doi.org/10.1007/s00603-019-01803-x.
  26. Samanta, M., Punetha, P. and Sharma, M. (2018), "Effect of roughness on interface shear behavior of sand with steel and concrete surface", Geomech. Eng., 14(4), 387-398. https://doi.org/10.12989/gae.2018.14.4.387.
  27. Saadat, M. and Taheri, A. (2020) "A cohesive grain based model to simulate shear behaviour of rock joints with asperity damage in polycrystalline rock", Comput. Geotech., 117, 103254. https://doi.org/10.1016/j.compgeo.2019.103254.
  28. Singh, H.K. and Basu, A. (2016), "Shear behaviors of 'real' natural un-matching joints of granite with equivalent joint roughness coefficients", Eng. Geol., 211, 120-134. https://doi.org/10.1016/j.enggeo.2016.07.004.
  29. Wang, Z., Gu, L.L., Shen, M.R., Zhang F., Zhang G.K. and Wang X. (2019), "Shear stress relaxation behavior of rock discontinuities with different joint roughness coefficient and stress histories", J. Struct, Geol., 126, 272-285. https://doi.org/10.1016/j.jsg.2019.06.016
  30. Xia, C.C., Song, Y.L., Tang, Z.C. and Song Y.J. (2012), "Shear strength and morphology characteristic evolution of joint surface under cyclic loads", J. Central South Univ., 43(9), 3589-3594.
  31. Xie, H.P., Wang, J.A. and Stein, E. (1998), "Direct fractal measurement and multifractal properties of fracture surfaces", Phys. Lett. A, 242(1-2), 41-50. https://doi.org/10.1016/S0375-9601(98)00098-X.
  32. Yang, S.Q., Lu, J.W., Tian, W.L., Tang, J.Z., (2018), "Experimental study of mechanical behavior of rock specimens with different joint roughness coefficient under conventional triaxial compression", Rock Soil Mech., 39, 21-32.
  33. Yang, S.Q., Ranjith, P.G., Jing, H.W., Tian, W.L. and Ju, Y. (2017), "An experimental investigation on thermal damage and failure mechanical behavior of granite after exposure to different high temperature treatments". Geothermics, 65, 180-197. https://doi.org/10.1016/j.geothermics.2016.09.008.
  34. Yang, W.D., Wang, L., Guo J.J. and Chen, X.G. (2020), "An experimental study on shear mechanical properties of clayconcrete interface with different roughness of contact surface", Geomech. Eng., 23, 39-50. https://doi.org/10.12989/gae.2020.23.1.039.
  35. Zandarin, M.T., Alonso, E. and Olivella, S. (2013), "A constitutive law for rock joints considering the effects of suction and roughness on strength parameters", Int. J. Rock Mech. Min. Sci., 60(2), 333-344. https://doi.org/10.1016/j.ijrmms.2012.12.007.
  36. Zhao, Z.H., Dou, Z.H., Xu, H.R. and Liu, Z.N. (2019), "Shear behavior of Beishan granite fractures after thermal treatment", Eng. Fract. Mech., 213, 223-240. https://doi.org/10.1016/j.engfracmech.2019.04.012.