A Coupled Seepage–Deformation Model for Simulating the Effect of Fracture Seepage on Rock Slope Stability Using the Numerical Manifold Method

Author:

Qu Xiaolei12,Zhang Yunkai3ORCID,Chen Youran4,Chen Youyang4,Qi Chengzhi12,Pasternak Elena5,Dyskin Arcady6

Affiliation:

1. Beijing Research Center for Engineering Structures and New Materials, Beijing University of Civil Engineering and Architecture, Beijing 100044, China

2. School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China

3. Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, UK

4. Department of Civil Engineering, The University of Edinburgh, Edinburgh EH8 9YL, UK

5. Department of Mechanical Engineering, The University of Western Australia, Perth, WA 6009, Australia

6. Department of Civil, Environmental and Mining Engineering, The University of Western Australia, Perth, WA 6009, Australia

Abstract

Modeling seepage problems in rock fractures is an interesting research approach to evaluating rock slope instability that is attracting increasing attention. In the present study, a coupled seepage–deformation model based on the numerical manifold method (NMM) is proposed, and the flow of groundwater in a fracture network coupled with the effects of seepage pressure and rock deformation are discussed. A global equilibrium equation of the system and a local factor of safety (FoS) of arbitrary rock fractures are derived based on the principle of minimum energy, and a series of verification examples are calculated. The simulation results show the robustness and effectiveness of the proposed numerical model. Finally, a rock slope collapse accident caused by seepage effects is simulated by the proposed method, and the failure process of the slope is reproduced. The simulation results show that excessive hydraulic pressure caused the vertical fractures to open and augmented the rock mass deformation, eventually leading to the failure of the slope. The proposed method possesses the potential to simulate larger-scale engineering problems.

Funder

National Natural Science Foundation of China

Program of the State Key Laboratory of Coal Resources and Safe Mining

EP and AVD acknowledge the support from the Australian Research Council through project

Publisher

MDPI AG

Subject

Water Science and Technology,Aquatic Science,Geography, Planning and Development,Biochemistry

Reference51 articles.

1. Trends, prospects and challenges in quantifying flow and transport through fractured rocks;Neuman;Hydrogeol. J.,2005

2. Modeling progressive failures in rock slopes with non-persistent joints using the numerical manifold method;An;Int. J. Numer. Anal. Methods Geomech.,2014

3. Modeling the effect of water, excavation sequence and rock reinforcement with discontinuous deformation analysis;Kim;Int. J. Rock Mech. Min. Sci.,1999

4. Strength, deformation and conductivity coupling of rock joints;Barton;Int. J. Rock Mech. Min. Sci.,1985

5. A study of groundwater flow in jointed rock and its influence on the stability of rock mass;Louis;Rock Mech. Res. Rep.,1969

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