Influence of Weak Interlayer Filling State on the Failure Patterns of Natural Rock Joints
Publication: International Journal of Geomechanics
Volume 22, Issue 7
Abstract
Weak interlayers determine the strength and stability of a jointed rock mass. The influence of weak interlayer filling state on the shear strength and failure patterns of a rock mass was studied by direct shear testing. Two different shear failure patterns of infilled joints were discovered, depending on the filling conditions of the weak interlayer. Shear failure occurred within the weak interlayer for large filling thickness, while the coupling effects of occlusal failure of asperities and shear failure of weak interlayer occurred for thin filling thickness. The shear strength of the infilled rock mass depended on the shear strength of weak interlayers and the occlusal strength of asperities on the rough joints. Moreover, the shear strength of a weak interlayer was entirely utilized in the first stage of shearing, and the occlusal strength of asperities then became much important with increasing shear deformation. The Mohr–Coulomb criterion was adopted to study the relationship between the peak stress and the normal stress in the first and third stages of shear stress evolution, which confirmed that the apparent cohesion and internal friction angle severally controlled the shear strength of the rock mass under low and high normal stresses. Finally, the impact of filling thickness on the shear strength of a jointed rock mass was predicted, according to the variations of apparent cohesion and internal friction angles. Observable shear displacement, accompanied by the secondary growth of shear stress, may be generated in an infilled rock mass before catastrophic failure. The results were of great significance for understanding the influence of the weak interlayer filling state on the shear strength and failure patterns of a jointed rock mass. Monitoring the stress and deformation of the infilled rock mass could provide useful information for the prediction of engineering disasters in rock, allowing effective control measures to be taken before hazards occur.
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Acknowledgments
This research was supported by the National Natural Science Foundation of China (Grant No. 42002280), the Science and Technology Program of Guizhou Province (Project Nos. [2019]2875, Key-ZK[2022]018), and the Geological Scientific Research Project of the Bureau of Geology and Mineral Exploration and Development Guizhou Province (Project No. [2015]18).
References
Chen, H., L. Li, J. Li, and D. Sun. 2022a. “A generic analytical elastic solution for excavation responses of an arbitrarily shaped deep opening under biaxial in situ stresses.” Int. J. Geomech. 22 (4): 04022023. https://doi.org/10.1061/(ASCE)GM.1943-5622.0002335.
Chen, H., L. Li, J. Li, and D. Sun. 2022b. “A rigorous elastoplastic load-transfer model for axially loaded pile installed in saturated modified Cam-clay soils.” Acta Geotech. 17: 635–651. https://doi.org/10.1007/s11440-021-01248-z.
Chen, S.-w., F. Liang, S.-y. Zuo, and D.-y. Wu. 2021. “Evolution of deformation property and strength component mobilization for thermally treated Beishan granite under compression.” J. Cent. South Univ. 28: 219–234. https://doi.org/10.1007/s11771-021-4598-9.
Chen, X., J. Zhang, Y. Xiao, and J. Li. 2015. “Effect of roughness on shear behavior of red clay–concrete interface in large-scale direct shear tests.” Can. Geotech. J. 52 (8): 1122–1135. https://doi.org/10.1139/cgj-2014-0399.
Duan, S.-Q., X.-T. Feng, Q. Jiang, G.-F. Liu, S.-F. Pei, and Y.-L. Fan, et al. 2017. “In situ observation of failure mechanisms controlled by rock masses with weak interlayer zones in large underground cavern excavations under high geostress.” Rock Mech. Rock Eng. 50 (9): 2465–2493. https://doi.org/10.1007/s00603-017-1249-4.
Duan, S.-Q., Q. Jiang, G.-F. Liu, J.-C. Xiong, P. Gao, D.-P. Xu, and M.-Y. Li, et al. 2021. “An insight into the excavation-induced stress paths on mechanical response of weak interlayer zone in underground cavern under high geostress.” Rock Mech. Rock Eng. 54: 1331–1354. https://doi.org/10.1007/s00603-020-02312-y.
Hu, J., H. Wen, Q. Xie, B. Li, and Q. Mo. 2019. “Effects of seepage and weak interlayer on the failure modes of surrounding rock: Model tests and numerical analysis.” R. Soc. Open Sci. 6: 190790. https://doi.org/10.1098/rsos.190790.
Indraratna, B., M. Jayanathan, and E. T. Brown. 2008. “Shear strength model for overconsolidated clay-infilled idealised rock joints.” Géotechnique 58 (1): 55–65. https://doi.org/10.1680/geot.2008.58.1.55.
Jahanian, H., and M. H. Sadaghiani. 2015. “Experimental study on the shear strength of sandy clay infilled regular rough rock joints.” Rock Mech. Rock Eng. 48 (3): 907–922. https://doi.org/10.1007/s00603-014-0643-4.
Kwak, C. W., I. J. Park, and J. B. Park. 2014. “Dynamic shear behavior of concrete–soil interface based on cyclic simple shear test.” KSCE J. Civ. Eng. 18 (3): 787–793. https://doi.org/10.1007/s12205-014-0360-2.
Li, B., Z. Feng, G. Wang, and W. Wang. 2016. “Processes and behaviors of block topple avalanches resulting from carbonate slope failures due to underground mining.” Environ. Earth Sci. 75 (8): 694.1–694.26.
Li, L., Y. Lu, Y. Cai, and P. Li. 2021. “A calibration technique to improve accuracy of the photogrammetry-based deformation measurement method for triaxial testing.” Acta Geotech. 16 (3): 1053–1060. https://doi.org/10.1007/s11440-020-01077-6.
Li, Y., W. Liu, C. Yang, and J. Da Emen. 2014. “Experimental investigation of mechanical behavior of bedded rock salt containing inclined interlayer.” Int. J. Rock Mech. Min. Sci. 69: 39–49. https://doi.org/10.1016/j.ijrmms.2014.03.006.
Lin, S.-S., C.-M. Lo, and Y.-C. Lin. 2017. “Investigating the deformation and failure characteristics of argillite consequent slope using discrete element method and burgers model.” Environ. Earth Sci. 76 (2): 81. https://doi.org/10.1007/s12665-017-6401-7.
Liu, H., T. Qiu, and Q. Xu. 2021. “Dynamic acceleration response of a rock slope with a horizontal weak interlayer in shaking table tests.” PLoS One 16 (4): e0250418.
Liu, J., Q. Xu, S. Wang, S. S. Subramanian, L. Wang, and X. Qi. 2020. “Formation and chemo-mechanical characteristics of weak clay interlayers between alternative mudstone and sandstone sequence of gently inclined landslides in Nanjiang, SW China.” Bull. Eng. Geol. Environ. 79: 4701–4715. https://doi.org/10.1007/s10064-020-01859-y.
Mei, Y., X. Mao, and X. Hu. 2016. “Shear creep characteristics and constitutive model of limestone.” Int. J. Min. Sci. Technol. 26 (03): 423–428. https://doi.org/10.1016/j.ijmst.2016.02.009.
Myers, N. O. 1962. “Characterization of surface roughness.” Wear 5: 182–189. https://doi.org/10.1016/0043-1648(62)90002-9.
Naghadehi, M. Z. 2015. “Laboratory study of the shear behaviour of natural rough rock joints infilled by different soils.” Period. Polytech., Civ. Eng. 59 (3): 413–421. https://doi.org/10.3311/PPci.7928.
Ren, M.-Y., Q.-Y. Zhang, S.-Y. Chen, L.-Y. Zhang, and W. Xiang. 2020. “Experimental study on mechanical properties of anchored rock-like material with weak interlayer under uniaxial compression.” Geotech. Geol. Eng. 38 (5): 4545–4556. https://doi.org/10.1007/s10706-020-01309-2.
Rullière, A., P. Rivard, L. Peyras, and P. Breul. 2020. “Influence of roughness on the apparent cohesion of rock joints at low normal stresses.” J. Geotech. Geoenviron. Eng. 146 (3): 04020003. https://doi.org/10.1061/(ASCE)GT.1943-5606.0002200.
Sun, H.-Y., P. Pan, Q. Lu, Z.-L. Wei, W. Xie, and W. Zhan. 2019. “A case study of a rainfall-induced landslide involving weak interlayer and its treatment using the siphon drainage method.” Bull. Eng. Geol. Environ. 78 (6): 4063–4074. https://doi.org/10.1007/s10064-018-1365-8.
Tang, L., Y. Zhao, J. Liao, and Q. Liu. 2020. “Creep experimental study of rocks containing weak interlayer under multilevel loading and unloading cycles.” Front. Earth Sci. 8: 519461. https://doi.org/10.3389/feart.2020.519461.
Xu, J., X. Tang, Z. Wang, Y. Feng, and K. Bian. 2020. “Investigating the softening of weak interlayers during landslides using nanoindentation experiments and simulations.” Eng. Geol. 277: 105801. https://doi.org/10.1016/j.enggeo.2020.105801.
Yang, Y.-c., H.-g. Xing, X.-g. Yang, M.-l. Chen, and J.-w. Zhou. 2018. “Experimental study on the dynamic response and stability of bedding rock slopes with weak interlayers under heavy rainfall.” Environ. Earth Sci. 77 (12): Article number: 433. https://doi.org/10.1007/s12665-018-7624-y.
Zhang, J. M. 2020. “State of art and trends of rock slope stability with soft interlayer.” J. Eng. Geol. 28 (3): 626–638.
Zhu, S. N., Y. P. Yin, and L. I. B. 2018. “Evolution characteristics of weak intercalation in massive layered rockslides: A case study of Jiweishan rockslide in Wulong, Chongqing.” J. Eng. Geol. 26 (6): 1638–1647.
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Published In
International Journal of Geomechanics
Volume 22 • Issue 7 • July 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jun 5, 2021
Accepted: Feb 6, 2022
Published online: Apr 22, 2022
Published in print: Jul 1, 2022
Discussion open until: Sep 22, 2022
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