Flow–stress coupled permeability tensor for fractured rock masses |
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| Authors: | Chuang B Zhou Radhey S Sharma Yi F Chen Guan Rong |
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| Institution: | 1. State key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, 430072 Wuhan, China;2. Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803, U.S.A. |
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| Abstract: | In this paper a new analytical model is proposed to determine the permeability tensor for fractured rock masses based on the superposition principle of liquid dissipation energy. This model relies on the geometrical characteristics of rock fractures and the corresponding fracture network, and demonstrates the coupling effect between fluid flow and stress/deformation. This model empirically considers the effect of pre‐peak shear dilation and shear contraction on the hydraulic behavior of rock fractures and can be used to determine the applicability of the continuum approach to hydro‐mechanical coupling analysis. Results of numerical analysis presented in this paper show that the new model can effectively describe the permeability of fractured rock masses, and can be applied to the coupling analysis of seepage and stress fields. Copyright © 2008 John Wiley & Sons, Ltd. |
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| Keywords: | fractured rock mass hydromechanical coupling permeability tensor flow– stress coupling model |
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