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A transversely isotropic thermo-poroelastic model for claystone: parameter identification and application to a 3D underground structure

Abstract : A transversely isotropic thermo-poroelastic constitutive law is developed and implemented in the finite element code Code_Aster (EDF, France). It is then validated using an analytic solution for an inclined borehole in a transversely isotropic medium. A strategy for identifying the parameters of the transversely isotropic thermo-poroelastic model based on an inverse method is proposed on the basis of different laboratory tests. To demonstrate the efficiency and applicability of the model, it is then applied in a three-dimensional numerical model of an underground structure in a parameter sensitivity study. The results of the modelling highlight the importance of accounting for anisotropic phenomena when determining the dimensions of underground facilities. The whole approach is presented in the paper, from model development to application to 3D numerical modelling to an engineering case study.
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https://hal.archives-ouvertes.fr/hal-02017965
Contributor : Dominique Martin <>
Submitted on : Wednesday, February 13, 2019 - 2:55:45 PM
Last modification on : Thursday, April 29, 2021 - 3:20:05 PM

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Richard Giot, Sylvie Granet, Maxime Faivre, Nadia Massoussi, Julie Huang. A transversely isotropic thermo-poroelastic model for claystone: parameter identification and application to a 3D underground structure. Geomechanics and Geoengineering, Taylor & Francis: STM, Behavioural Science and Public Health Titles, 2018, 13 (4), pp.246-263. ⟨10.1080/17486025.2018.1445874⟩. ⟨hal-02017965⟩

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