Hydro-Mechanical Modelling of the Boom Clay Excavation, Convergence and Contact with Concrete Lining

Bertrand François, Jérome Nève, Séverine Levasseur, Arnaud Dizier, Pierre Gerard

    Research outputpeer-review


    The Boom Clay is considered as one of the potential host rock formation in Belgium for radioactive waste repository in deep geological layers.Gallery excavations will induce large hydro-mechanical disturbances around disposal system that need to be well understood and characterised. This study discusses particularly the role of interactions between the lining of the galleries and the host formation in the numerical characterisation of excavations in Boom Clay. The excavation and the convergence of the connecting gallery of the HADES underground research facility in Mol is modelled in a hydromechanical framework. Zero-thickness interface elements are used to manage numerically the contact between the host rock and the lining. Numerical predictions are compared with strains measurements recorded within the concrete segments of the lining in the underground research laboratory in Mol. The study highlights the impact of the anisotropic behavior of the host rock on the response of the model.
    Original languageEnglish
    Title of host publicationInternational Symposium on Energy Geotechnics
    Subtitle of host publicationSEG 2018 - Energy Geotechnics
    Number of pages8
    StatePublished - 25 Sep 2018
    EventInternational Symposium on Energy Geotechnics - Swiss Federal Institute of Technology , Lausanne
    Duration: 25 Sep 201828 Sep 2018

    Publication series

    NameSpringer Series in Geomechanics and Geoengineering
    ISSN (Print)1866-8755
    ISSN (Electronic)1866-8763


    ConferenceInternational Symposium on Energy Geotechnics
    Abbreviated titleSEG-2018
    Internet address

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