Abstract
The original forming process of the earth crust is companied with internal in situ stress, which gradually complicates while the earth crust evolves with geological conformation movements, leading to the generation of large amounts of faults, joints and fissures. These structural planes, to some extent, remarkably reduce the strengths of rock mass, including the shear behavior. In this paper, the authors report a physical model test on jointed rock mass under direct shear stress state and also adopt a numerical method, Discontinuous Deformation Analysis for Rock Failure (DDARF), to simulate the shear failure process, the variation of stresses and displacements of some key monitoring points. The comparative analysis demonstrates that the numerical results are favorable with those obtained in the physical model test. Therefore, it is concluded that the method of DDARF could effectively simulate the shear behavior of jointed rock mass. Furthermore, other than the original physical model test, the numerical models with echelon joints under different axial loadings are also simulated. The crack initiation, extension, coalescence, and the ultimate shear failure are totally investigated, after which the shear behavior of numerical models in different cases are comparatively analyzed.
Similar content being viewed by others
References
Bahaaddini, M., Sharrock, G., and Hebblewhite B.K., 2013, Numerical direct shear tests to model the shear behaviour of rock joints. Computers and Geotechnics, 51, 101–115.
Barton, N., 1973, Review of a new shear strength criterion for rock joints. Engineering Geology, 7, 287–332.
Barton, N. and Choubey, V., 1977, The shear strength of rock joints in theory and practice. Rock Mechanics, 10, 1–54.
Beer, G. and Poulsen, B.A., 1994, Efficient numerical modelling of faulted rock using the boundary element method. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 31, 485–506.
Chiu, C.C., Wang, T.T., Weng, M.C., and Huang, T.H., 2013, Modeling the anisotropic behavior of jointed rock mass using a modified smooth-joint model. International Journal of Rock Mechanics and Mining Sciences, 62, 14–22.
Coli, N., Berry, P., and Boldini, D., 2011, In situ non-conventional shear tests for the mechanical characterization of a bimrock. International Journal of Rock Mechanics and Mining Sciences, 48, 95–102.
Crotty, J.M. and Wardle, L.J., 1985, Boundary integral analysis of piecewise homogeneous media with structural discontinuities. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 22, 419–427.
Deng, L.Y., Guo, R., Lin, D.K.J., and Bai, F.S., 2008, Improving random number generators in the Monte-Carlo simulations via twisting and combining. Computer Physics Communications, 178, 401–408.
Han, B.L., Chen, X.L., and Song, Y.L., 1997, Research on similar material of rock mass. Journal of Wuhan University of Hydraulic and Electric Engineering, 30, 6–9. (in Chinese with English abstract)
Helgstedt, M.D., Douglas, K.J., and Mostyn G., 1997, A re-evaluation of in-situ direct shear tests, Aviemore Dam, New Zealand. Australian Geomechanics, 31, 56–65.
Jiao, Y.Y., Zhang, H.Q., Zhang, X.L., Li, H.B., and Jiang, Q.H., 2014, A two-dimensional coupled hydromechanical discontinuum model for simulating rock hydraulic fracturing. International Journal for Numerical and Analytical Methods in Geomechanics, doi: 10.1002/nag.2314.
Jiao, Y.Y., Zhang, X.L., and Li, T.C., 2010, Discontinuous Deformation Analysis for Modeling Jointed Rock Failure Process. Science Press, Beijing, 140 p. (in Chinese)
Kawamoto, T., 1970, Macroscopic shear failure of jointed and layered brittle media. Proceedings of the 2nd Congress of International Society for Rock Mechanics, Belgrade, Sept. 21–26, p. 215–221.
Lama, R.D. and Vutukuri, V.S., 1978, Hand book on Mechanical Properties of Rocks. Vol. 4: Testing Techniques and Results. Trans Tech Publications, Clausthal, 515 p.
Li, B., Jiang, Y.J., Mizokami, T., Ikusada, K., and Mitani, Y., 2014, Anisotropic shear behavior of closely jointed rock masses. International Journal of Rock Mechanics and Mining Sciences, 71, 258–271.
Löhner, R. and Parikh, P., 1988, Generation of three-dimensional unstructured grids by the advancing front method. International Journal for Numerical Methods in Fluids, 8, 1135–1149.
Ma, F.P., Li, Z.K., and Luo G.F., 2004, NIOS model material and its use in geo-mechanical similarity model test. Journal of Hydroelectric Engineering, 23, 48–51. (in Chinese with English abstract)
Park, J.W. and Song, J.J., 2009, Numerical simulation of a direct shear test on a rock joint using a bonded-particle model. International Journal of Rock Mechanics and Mining Sciences, 46, 1315–1328.
Pomeroy, C.D., Hobbs, D.W., and Mahmoud, A., 1971, The effect of weakness-plane orientation on the fracture of Barnsley Hards by triaxial compression. International Journal of Rock Mechanics and Mining Sciences, 8, 227–238.
Shi, G.H., 1988, Discontinuous Deformation Analysis: a New Numerical Model for the Statics and Dynamics of Block System. Ph.D. Thesis, University of California Berkeley, Berkeley, 365 p.
Singh, M., Rao, K.S., and Ramamurthy, T., 2002, Strength and deformational behavior of a jointed rock mass. Rock Mechanics and Rock Engineering, 35, 45–64.
Takano, M. and Furujo I., 1966, Deformation and resistance in in-situ block shear test on a black schist and a characteristic loading pattern. Proceedings of The 1st International Society for Rock Mechanics Congress, Lisbon, Sept. 25–Oct. 1, p. 765–768.
Woo, I., Fleurisson, J.A., and Park, H.J., 2010, Influence of weathering on shear strength of joints in a porphyritic granite rock mass in Jechon area, South Korea. Geosciences Journal, 14, 289–299.
Zhang, H.Q., Zhao, Z.Y., Tang, C.A., and Song, L., 2006, Numerical study of shear behavior of intermittent rock joints with different geometrical parameters. International Journal of Rock Mechanics and Mining Sciences, 43, 802–816.
Zhang, X.L., Jiao, Y.Y., and Zhao, J., 2008, Simulation of failure process of jointed rock. Journal of Central South University of Technology, 15, 888–894.
Zhang, Y.J. and Zhang, W.Q., 2010, 3D FEM analysis for layered rock considering anisotropy of shear strength. Journal of Central South University of Technology, 17, 1357–1363.
Zhu, W.S., Li, Y., Li, S.C., Wang, S.G., and Zhang, Q.B., 2011, Quasithree- dimensional physical model tests on a cavern complex under high in-situ stresses. International Journal of Rock Mechanics and Mining Sciences, 48, 199–209.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Li, Y., Zhou, H., Zhu, W. et al. Experimental and numerical investigations on the shear behavior of a jointed rock mass. Geosci J 20, 371–379 (2016). https://doi.org/10.1007/s12303-015-0052-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12303-015-0052-z