Abstract
Understanding the shear strength and failure mechanism of a rock joint is essential in rock engineering. This study performed a series of direct shear tests and discrete element modelings on artificial joint specimens to investigate the effect of roughness [randomly generated joint profiles with joint roughness coefficient (JRC) = 20, 19.6, and 10] on the joint strength. The results of the numerical simulation were consistent in the peak shear strength with the laboratory tests and Barton’s equation. From a microscopic viewpoint, the rock joint’s peak and residual shear strength were mainly mobilized from the friction property of such a joint profile. The contribution of friction to the shear strength at the residual stage was reduced because of dilation behavior and decreasing contact area along the joint surface. Therefore, the mobilized friction angle decreased from the initial basic friction angle to a certain value depending on the initial JRC value. The mobilized JRC of a rock joint was found to be related to the initial JRC, the unconfined compressive strength (UCS) of joint material, and the applying normal stress. The surface of joint models with high UCS is less damaged than that with low UCS. Finally, a new model for predicting the residual shear strength of a rock joint was also proposed, which can be applied for the joint using both randomly generated profiles and Barton’s standard profiles.
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Acknowledgments
This research was financially supported by the Ministry of Science and Technology, Taiwan under contract MOST 107-2625-M-008-011.
References
Amiri, H. K., N. Babanouri, and N. S. Karimi. 2014. “The influence of asperity deformability on the mechanical behavior of rock joints.” Int. J. Rock Mech. Min. Sci. 70: 154–161. https://doi.org/10.1016/j.ijrmms.2014.04.009.
Asadi, M. S., V. Rasouli, and G. Barla. 2013. “A laboratory shear cell used for simulation of shear strength and asperity degradation of rough rock fractures.” Rock Mech. Rock Eng. 46 (4): 683–699. https://doi.org/10.1007/s00603-012-0322-2.
Asadollahi, P., and F. Tonon. 2010. “Constitutive model for rock fractures: Revisiting Barton’s empirical model.” Eng. Geol. 113 (1-4): 11–32. https://doi.org/10.1016/j.enggeo.2010.01.007.
Babanouri, N., and N. S. Karimi. 2015. “Modeling spatial structure of rock fracture surfaces before and after shear test: A method for estimating morphology of damaged zones.” Rock Mech. Rock Eng. 48 (3): 1051–1065. https://doi.org/10.1007/s00603-014-0622-9.
Bahaaddini, M., P. C. Hagan, R. Mitra, and B. K. Hebblewhite. 2014. “Scale effect on the shear behaviour of rock joints based on a numerical study.” Eng. Geol. 181: 212–223. https://doi.org/10.1016/j.enggeo.2014.07.018.
Bahaaddini, M., P. C. Hagan, R. Mitra, and M. H. Khosravi. 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.
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.
Barton, N. 1982. Modelling rock joint behavior from in situ block tests: Implications for nuclear waste repository design. Columbus, OH: Battelle Memorial Institute.
Cheng, C., X. Chen, and S. Zhang. 2016. “Multi-peak deformation behavior of jointed rock mass under uniaxial compression: Insight from particle flow modeling.” Eng. Geol. 213: 25–45. https://doi.org/10.1016/j.enggeo.2016.08.010.
Deere, D. U., and R. P. Miller. 1966. Engineering classification and index properties for intact rock. Albuquerque, NM: Air Force Weapons Lab: Kirtland Air Base.
Fan, X., P. H. S. W. Kulatilake, and X. Chen. 2015. “Mechanical behavior of rock-like jointed blocks with multi-non-persistent joints under uniaxial loading: A particle mechanics approach.” Eng. Geol. 190: 17–32. https://doi.org/10.1016/j.enggeo.2015.02.008.
Feder, J. 1988. Fractals. New York: Plenum Press.
Fei, F., and J. Choo. 2021. “Double-phase-field formulation for mixed-mode fracture in rocks.” Comput. Methods Appl. Mech. Eng. 376: 113655. https://doi.org/10.1016/j.cma.2020.113655.
Gao, Y., Z. Liu, T. Wang, Q. Zeng, X. Li, and Z. Zhuang. 2019. “XFEM modeling for curved fracture in the anisotropic fracture toughness medium.” Comput. Mech. 63: 869–883. https://doi.org/10.1007/s00466-018-1627-0.
Guo, S., and S. W. Qi. 2015. “Numerical study on progressive failure of hard rock samples with an unfilled undulate joint.” Eng. Geol. 193: 173–182. https://doi.org/10.1016/j.enggeo.2015.04.023.
Jiang, M., T. Jiang, G. B. Crosta, Z. Shi, H. Chen, and N. Zhang. 2015a. “Modeling failure of jointed rock slope with two main joint sets using a novel DEM bond contact model.” Eng. Geol. 193: 79–96. https://doi.org/10.1016/j.enggeo.2015.04.013.
Jiang, Q., X. Feng, L. Song, Y. Gong, H. Zheng, and J. Cui. 2015b. “Modeling rock specimens through 3D printing: Tentative experiments and prospects.” Acta Mech. Sin. 32: 101–111. https://doi.org/10.1007/s10409-015-0524-4.
Krahn, J., and N. R. Morgenstern. 1979. “The ultimate frictional resistance of rock discontinuities.” Int. J. Rock Mech. Min. Sci. Geomech. Abstr. 16 (2): 127–133. https://doi.org/10.1016/0148-9062(79)91449-9.
Le, H. K., W. C. Huang, and C. C. Chien. 2019. “Application of 3D-printing in generating artificial rock joint specimen with given JRC and its mechanical properties.” In Proc. 53rd US Rock Mechanics/Geomechanics Symp. Alexandria, VA: American Rock Mechanics Association (ARMA).
Le, H. K., W. C. Huang, and C. C. Chien. 2021. “Exploring micromechanical behaviors of soft rock joints through physical and DEM modeling.” Bull. Eng. Geol. Environ. 80 (3): 2433–2446. https://doi.org/10.1007/s10064-020-02087-0.
Lê, H. K., W. C. Huang, M. C. Liao, and M. C. Weng. 2018. “Spatial characteristics of rock joint profile roughness and mechanical behavior of a randomly generated rock joint.” Eng. Geol. 245: 97–105. https://doi.org/10.1016/j.enggeo.2018.06.017.
Lee, Y. H., J. R. Carr, D. J. Barr, and C. J. Hass. 1990. “The fractal dimension as a measure of the roughness of rock discontinuity profiles.” Int. J. Rock Mech. Min. Sci. Geomech. Abstr. 27 (6): 453–464. https://doi.org/10.1016/0148-9062(90)90998-H.
Liu, H., Z. Zhao, J. Chen, and D. Liu. 2020. “Empirical shear strength criterion for rock joints based on joint surface degradation characteristics during shearing.” Rock Mech. Rock Eng. 53 (8): 3609–3624. https://doi.org/10.1007/s00603-020-02120-4.
Liu, Q., Y. Tian, D. Liu, and Y. Jiang. 2017. “Updates to JRC-JCS model for estimating the peak shear strength of rock joints based on quantified surface description.” Eng. Geol. 228: 282–300. https://doi.org/10.1016/j.enggeo.2017.08.020.
Liu, Q., W. Xing, and Y. Li. 2014. “Numerical built-in method for the nonlinear JRC/JCS model in rock joint.” Sci. World J. 2014: 735497.
Malinverno, A. 1990. “A simple method to estimate the fractal dimension of a self-affine series.” Geophys. Res. Lett. 17 (11): 1953–1956. https://doi.org/10.1029/GL017i011p01953.
Meng, F., L. N. Y. Wong, H. Zhou, and Z. Wang. 2018. “Comparative study on dynamic shear behavior and failure mechanism of two types of granite joint.” Eng. Geol. 245: 356–369. https://doi.org/10.1016/j.enggeo.2018.09.005.
Myers, N. O. 1962. “Characterization of surface roughness.” Wear 5 (3): 182–189. https://doi.org/10.1016/0043-1648(62)90002-9.
Negi, A., A. K. Singh, and R. P. Yadav. 2019. “Analysis on dynamic interfacial crack impacted by SH-wave in bi-material poroelastic strip.” Compos. Struct. 233: 111639. https://doi.org/10.1016/j.compstruct.2019.111639.
Pickering, C., and A. Aydin. 2016. “Modeling roughness of rock discontinuity surfaces: A signal analysis approach.” Rock Mech. Rock Eng. 49 (7): 2959–2965. https://doi.org/10.1007/s00603-015-0870-3.
Sharma, P., A. K. Verma, A. Negi, M. K. Jha, and P. Gautam. 2018. “Stability assessment of jointed rock slope with different crack infillings under various thermomechanical loadings.” Arabian J. Geosci. 11: 431. https://doi.org/10.1007/s12517-018-3772-3.
Singh, A. K., A. Negi, A. Chattopadhyay, and A. K. Verma. 2017a. “Analysis of different types of heterogeneity and induced stresses in an initially stressed irregular transversely isotropic rock medium subjected to dynamic load.” Int. J. Geomech. 17 (8): 04017022. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000891.
Singh, A. K., A. Negi, A. K. Verma, and S. Kumar. 2017b. “Analysis of stresses induced due to a moving load on irregular initially stressed heterogeneous viscoelastic rock medium.” J. Eng. Mech. 143 (9): 04017096. https://doi.org/10.1061/(ASCE)EM.1943-7889.0001307.
Singh, A. K., A. Negi, R. P. Yadav, and A. K. Verma. 2018. “Dynamic stress concentration in pre-stressed poroelastic media due to moving punch influenced by shear wave.” J. Seismolog. 22 (4): 1263–1274. https://doi.org/10.1007/s10950-018-9766-5.
Singh, H. K., and A. Basu. 2018. “Evaluation of existing criteria in estimating shear strength of natural rock discontinuities.” Eng. Geol. 232: 171–181. https://doi.org/10.1016/j.enggeo.2017.11.023.
Tang, X., J. Rutqvist, M. Hu, and N. M. Rayudu. 2019. “Modeling three-dimensional fluid-driven propagation of multiple fractures using TOUGH-FEMM.” Rock Mech. Rock Eng. 52: 611–627. https://doi.org/10.1007/s00603-018-1715-7.
Tatone, B. S. A., and G. Grasselli. 2010. “A new 2D discontinuity roughness parameter and its correlation with JRC.” Int. J. Rock Mech. Min. Sci. 47 (8): 1391–1400. https://doi.org/10.1016/j.ijrmms.2010.06.006.
Tse, R., and D. M. Cruden. 1979. “Estimating joint roughness coefficients.” Int. J. Rock Mech. Min. Sci. Geomech. Abstr. 16 (5): 303–307. https://doi.org/10.1016/0148-9062(79)90241-9.
Usefzadeh, A., H. Yousefzadeh, S. R. Hossein, and M. Sharifzadeh. 2013. “Empirical and mathematical formulation of the shear behavior of rock joints.” Eng. Geol. 164: 243–252. https://doi.org/10.1016/j.enggeo.2013.07.013.
Wakabayashi, N., and I. Fukushige. 1992. “Experimental study on the relation between fractal dimension and shear strength.” In Paper for the ISRM Symp. Lake Tahoe: Fractured and Jointed Rock Masses.
Wang, L., C. Wang, S. Khoshnevisan, Y. Ge, and Z. Sun. 2017. “Determination of two-dimensional joint roughness coefficient using support vector regression and factor analysis.” Eng. Geol. 231: 238–251. https://doi.org/10.1016/j.enggeo.2017.09.010.
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Published In
International Journal of Geomechanics
Volume 22 • Issue 8 • August 2022
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© 2022 American Society of Civil Engineers.
History
Received: Nov 14, 2021
Accepted: Feb 14, 2022
Published online: May 26, 2022
Published in print: Aug 1, 2022
Discussion open until: Oct 26, 2022
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Cited by
- Xing Li, Xiaobao Zhao, Shuaibo Zhao, Jianchun Li, Experimental study on the normal deformation of joint under dynamic compressions, International Journal of Rock Mechanics and Mining Sciences, 10.1016/j.ijrmms.2022.105267, 160, (105267), (2022).