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Anisotropic damage coupled modeling of saturated porous rock

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Abstract

It is widely acknowledged that the natural rock mass is anisotropic and its failing type is also non-isotropic. An orthotropic elastic damaged model has been proposed in which the elastic deformation, the damaged deformation and irreversible deformation can be identified respectively. A second rank damage tensor is employed to characterize the induced damage and damage evolution related to the propagation conditions of microcracks. A specific form of the Gibbs free energy function is used to obtain the effective elastic stiffness and the limited scopes of damage parameters are suggested. The model’s parameter determination is proposed by virtue of conventional tri-axial test. Then, the proposed model is developed to simulate the coupled hydraulic mechanical responses and traction behaviors in different loading paths of porous media.

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Authors and Affiliations

  1. Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang, 443002, China

    YingFa Lu & XinXing Wu

  2. School of Civil Engineering, Wuhan University, Wuhan, 430071, China

    YingFa Lu & XinXing Wu

  3. University of Sciences and Technologies of Lille, Lille, 59655, France

    JianFu Shao

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  1. YingFa Lu
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  2. XinXing Wu
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  3. JianFu Shao
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Correspondence to YingFa Lu.

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Lu, Y., Wu, X. & Shao, J. Anisotropic damage coupled modeling of saturated porous rock. Sci. China Technol. Sci. 53, 2681–2690 (2010). https://doi.org/10.1007/s11431-010-4083-4

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