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

Research output: Contribution to report/book/conference proceedingsIn-proceedings paper

Authors

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

Institutes & Expert groups

  • ULB - Université Libre de Bruxelles
  • NIRAS/ONDRAF

Documents & links

Abstract

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.

Details

Original languageEnglish
Title of host publicationInternational Symposium on Energy Geotechnics
Subtitle of host publicationSEG 2018 - Energy Geotechnics
PublisherSpringer
Pages418–425
Number of pages8
DOIs
Publication statusPublished - 25 Sep 2018
EventInternational Symposium on Energy Geotechnics - Swiss Federal Institute of Technology , Lausanne, Switzerland
Duration: 25 Sep 201828 Sep 2018
https://seg2018.epfl.ch/

Publication series

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

Conference

ConferenceInternational Symposium on Energy Geotechnics
Abbreviated titleSEG-2018
CountrySwitzerland
CityLausanne
Period2018-09-252018-09-28
Internet address

Keywords

  • geological disposal, Boom Clay, contact, concrete lining, hydro-mechnaical, finite element

ID: 4802793