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Localisation of Deformation for Shearing of a Fault Gouge with Cosserat Microstructure and Different Couplings

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Bifurcation and Degradation of Geomaterials with Engineering Applications (IWBDG 2017)

Part of the book series: Springer Series in Geomechanics and Geoengineering ((SSGG))

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Abstract

In this paper, we show the impact of Thermo-Hydro Mechanical couplings (THM) on the stability of a saturated fault gouge under shear. By resorting to Cosserat continuum mechanics, that allows to take into account rotational degrees of freedom, we regularize the problem of localisation and we predict the thickness of a shear band. A linear stability analysis of the homogeneous state is performed and then the system of equations is integrated using a Finite Element (FE) analysis. These analyses can be used for studying the evolution of the thickness of the principal slip zone in a fault under undrained adiabatic shear. Good agreement is found between theoretical predictions and field observations.

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Author information

Authors and Affiliations

  1. Laboratoire Navier/CERMES, Ecole des Ponts ParisTech, IFSTTAR, CNRS, Université Paris-Est, 77455, Marne la Vallée, France

    H. Rattez, I. Stefanou & J. Sulem

  2. School of Petroleum Engineering, University of New South Wales, Kensington, NSW, 2033, Australia

    M. Veveakis & T. Poulet

  3. CSIRO, 11 Julius Avenue, North Ryde, NSW, 2113, Australia

    M. Veveakis & T. Poulet

Authors
  1. H. Rattez
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  2. I. Stefanou
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  3. J. Sulem
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  4. M. Veveakis
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  5. T. Poulet
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Corresponding author

Correspondence to H. Rattez .

Editor information

Editors and Affiliations

  1. Department of Civil Engineering, Aristotle Univ of Thessaloniki Department of Civil Engineering, Thessaloniki, Greece

    Euripides Papamichos

  2. Department of Civil and Environmental En, University of Cyprus Department of Civil and Environmental En, Nicos, Cyprus

    Panos Papanastasiou

  3. School of Mechanical & Chemical Engg, University of Western Australia School of Mechanical & Chemical Engg, Crawley, West Australia, Australia

    Elena Pasternak

  4. Sch Civil, Envtl & Mining Engg, University of Western Australia Sch Civil, Envtl & Mining Engg, Crawley, West Australia, Australia

    Arcady Dyskin

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Rattez, H., Stefanou, I., Sulem, J., Veveakis, M., Poulet, T. (2017). Localisation of Deformation for Shearing of a Fault Gouge with Cosserat Microstructure and Different Couplings. In: Papamichos, E., Papanastasiou, P., Pasternak, E., Dyskin, A. (eds) Bifurcation and Degradation of Geomaterials with Engineering Applications. IWBDG 2017. Springer Series in Geomechanics and Geoengineering. Springer, Cham. https://doi.org/10.1007/978-3-319-56397-8_20

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  • DOI: https://doi.org/10.1007/978-3-319-56397-8_20

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-56396-1

  • Online ISBN: 978-3-319-56397-8

  • eBook Packages: EngineeringEngineering (R0)

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