Abstract
The rock mass unloading is closely related to the change of geological environment, such as river valley down-cutting, frequent rainfall and evaporation, and slope excavation. For the jointed rock slope with complicated structure, these changes may trigger the propagation of cracks, posing a serious threat to slope stability and construction safety. Thus, it is necessary to analyze the fissure propagation of jointed rock slope under unloading condition. Currently, traditional finite element method (FEM) has been widely used to analyze the failure of slope because of its rigorously theoretical system. However, for discontinuous problems such as crack propagation, the result in FEM often presents high stress concentration in crack tip (numerical singularity), causing calculation to abort. In this connection, this paper intended to introduce cohesive zone model (Theory of cohesive element) from fracture mechanics to deal with the numerical singularity, and meanwhile adopt Voronoi diagram algorithm for rapidly modelling the structural planes. Firstly, a jointed rock slope model was taken as an example, discontinuity network of which was generated by Voronoi diagram, and then 0-thickness cohesive elements were embedded into structural planes to establish a numerical model. Finally, the study compared and analyzed the crack evolution of slope under different unloading conditions by changing the geometry of slope.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Lin, Y.D., Zhu, D.P., Deng, Q.L., He, Q.D.: Collapse analysis of jointed rock slope based on UDEC software and practical seismic load. Procedia Eng. 31, 441–446 (2012)
Kim, D.H., Gratchev, I., Balasubramaniam, A.: Back analysis of a natural jointed rock slope based on the photogrammetry method. Landslides 12(1), 147-154 (2015)
Li, S.H., Wang, J.G., Liu, B.S., Dong, D.P.: Analysis of critical excavation depth for a jointed rock slope using a face-to-face discrete element method. Rock Mech. Rock Eng. 40(4), 331–348 (2007)
Jiang, M.J., Jiang, T., Crosta, G.B., Shi, Z.M., Chen, H., Zhang, N.: Modeling failure of jointed rock slope with two main joint sets using a novel DEM bond contact model. Eng. Geol. 193, 79–96 (2015)
He, L., An, X.M., Ma, G.W., Zhao, Z.Y.: Development of three-dimensional numerical manifold method for jointed rock slope stability analysis. Int. J. Rock Mech. Min. Sci. 64, 22–35 (2013)
Fernandez-Rodriguez, R., Gonzalez-Nicieza, C., Lopez-Gayarre, F., Amor-Herrera, E.: Characterization of intensely jointed rock masses by means of in situ penetration tests. Int. J. Rock Mech. Min. Sci. 72, 92–99 (2014)
Che, A.L., Yang, H.K., Wang, B., Ge, X.R.: Wave propagations through jointed rock masses and their effects on the stability of slopes. Eng. Geol. 201, 45–56 (2016)
Cai, M., Kaiser, P.K., Tasaka, Y., Minami, M.: Determination of residual strength parameters of jointed rock masses using the GSI system. Int. J. Rock Mech. Min. Sci. 44(2), 247–265 (2007)
Lian, J.J., Li, Q., Deng, X.F., Zhao, G.F., Chen, Z.Y.: A numerical study on toppling failure of a jointed rock slope by using the distinct lattice spring model. Rock Mech. Rock Eng. 51(2), 513–530 (2018)
Hatzor, Y.H., Bakun-Mazor, D.: Modelling dynamic deformation in natural rock slopes and underground openings with DDA: review of recent results. Geomechanics Geoengineering 6(4), 283–292 (2011)
Regassa, B., Xu, N.X., Mei, G.: An equivalent discontinuous modeling method of jointed rock masses for DEM simulation of mining-induced rock movements. Int. J. Rock Mech. Min. Sci. 108, 1–14 (2018)
Nazari, S.; Yarahmadi Bafghi, A.; Fatehi Marji, M.: Numerical modeling of crack propagation mechanism in jointed rock slopes using indirect BEM and DEM. In: Proceedings of the 49th U.S. Rock Mechanics/Geomechanics Symposium, pp. 2084–2094. American Rock Mechanics Association (ARMA), San Francisco, CA, USA (2015)
Barenblatt, G.I.: The mathematical theory of equilibrium cracks in brittle fracture. J. Adv. Applied Mech. 7, 55–129 (1962)
Hillerborg, A., Modeer, M., Petersson, P.E.: Analysis of crack formulation and crack growth in concrete by means of fracture mechanics and finite elements. J. Cement Concrete Res. 6, 773–782 (1976)
Wu, Z.J., Sun, H., Wong, L.N.Y.: A cohesive element-based numerical manifold method for hydraulic fracturing modelling with voronoi grains. Rock Mech. Rock Eng. 52(7), 2335–2359 (2019)
Qin, X.N., Guo, J.J., Gu, C.S., Chen, X.D., Xu, B.: A discrete-continuum coupled numerical method for fracturing behavior in concrete dams considering material heterogeneity. Constr. Build. Mater. 305, 124741 (2021)
Jiang, H.X., Meng, D.G.: 3D numerical modelling of rock fracture with a hybrid finite and cohesive element method. Eng. Fract. Mech. 199, 280–293 (2018)
Encalada, Á., Barzola-Monteses, J., Espinoza-Andaluz, M.: A permeability-throat diameter correlation for a medium generated with delaunay tessellation and voronoi algorithm. Transp. Porous Media 132(1), 201–217 (2020)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Li, S., Yang, C. (2023). Study on the Fissure Propagation of Jointed Rock Slope Under Unloading Condition. In: Guo, W., Qian, K. (eds) Proceedings of the 2022 International Conference on Green Building, Civil Engineering and Smart City. GBCESC 2022. Lecture Notes in Civil Engineering, vol 211. Springer, Singapore. https://doi.org/10.1007/978-981-19-5217-3_88
Download citation
DOI: https://doi.org/10.1007/978-981-19-5217-3_88
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-19-5216-6
Online ISBN: 978-981-19-5217-3
eBook Packages: EngineeringEngineering (R0)