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    Study of desaturation and resaturation in brittle rock with anisotropic damage

    New search for: Shao, J.F.
    New search for: Ata, N.
    New search for: Ozanam, O.

    AbstractThis paper deals with numerical modelling of anisotropic damage induced by desaturation and resaturation processes in a brittle rock. This study is conducted in the framework of geological barrier safety analysis for deep disposal of nuclear waste. A non-linear poroelastic model coupled with anisotropic damage is proposed for constitutive modelling of unsaturated rock. A fully coupled FEM method is used for modelling of hydromechanical coupling problems. Instantaneous phase change without dissipation between water liquid phase and vapour is included. Parametric studies are performed to investigate influences of main factors involved in such processes. Rock damage induced by excavation, desaturation and resaturation is evaluated. Finally, we analyse the importance of taking into account the correlation between induced damage and rock permeability.

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    Study of desaturation and resaturation in brittle rock with anisotropic damage

    New search for: Shao, J.F.
    New search for: Ata, N.
    New search for: Ozanam, O.

    AbstractThis paper deals with numerical modelling of anisotropic damage induced by desaturation and resaturation processes in a brittle rock. This study is conducted in the framework of geological barrier safety analysis for deep disposal of nuclear waste. A non-linear poroelastic model coupled with anisotropic damage is proposed for constitutive modelling of unsaturated rock. A fully coupled FEM method is used for modelling of hydromechanical coupling problems. Instantaneous phase change without dissipation between water liquid phase and vapour is included. Parametric studies are performed to investigate influences of main factors involved in such processes. Rock damage induced by excavation, desaturation and resaturation is evaluated. Finally, we analyse the importance of taking into account the correlation between induced damage and rock permeability.

    Access

    Check access
    Check availability in my library
    Order at Subito €

    Study of desaturation and resaturation in brittle rock with anisotropic damage

    New search for: Shao, J.F.
    New search for: Ata, N.
    New search for: Ozanam, O.

    AbstractThis paper deals with numerical modelling of anisotropic damage induced by desaturation and resaturation processes in a brittle rock. This study is conducted in the framework of geological barrier safety analysis for deep disposal of nuclear waste. A non-linear poroelastic model coupled with anisotropic damage is proposed for constitutive modelling of unsaturated rock. A fully coupled FEM method is used for modelling of hydromechanical coupling problems. Instantaneous phase change without dissipation between water liquid phase and vapour is included. Parametric studies are performed to investigate influences of main factors involved in such processes. Rock damage induced by excavation, desaturation and resaturation is evaluated. Finally, we analyse the importance of taking into account the correlation between induced damage and rock permeability.

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    Title:

    Study of desaturation and resaturation in brittle rock with anisotropic damage

    Contributors:

    Shao, J.F. (author) / Ata, N. (author) / Ozanam, O. (author)

    Published in:

    Engineering Geology ; 81 ; 341-352

    Publication date:

    2005-01-01

    Size:

    12 pages

    ISSN:

    0013-7952

    DOI:

    https://doi.org/10.1016/j.enggeo.2005.06.015

    Type of media:

    Article (Journal)

    Type of material:

    Electronic Resource

    Language:

    English

    Keywords:

    Mudstone , Unsaturated rock , Desaturation , Damage , Microcracks , Waste disposal

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