Thermo-hydro-mechanical modelling of hollow cylinder laboratory exeriments on Boom Clay

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Authors

  • A. Dizier
  • F. Collin
  • B. Garitte
  • B. François
  • Guangjing Chen
  • Y. Sieffert
  • V. Labiouse
  • R. Charlier
  • R. Chambon

Institutes & Expert groups

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Abstract

In the framework of WP5.2 of TIMODAZ project, it is intended to develop constitutive models and numerical tools reproducing the thermo-hydro-mechanical (THM) evolution of the host rocks at real time and repository scale. Predictive THM modelling of on-going laboratory experiments has been realised by several partners of the project to compare different finite element codes and to provide a first insight into the THM responses of the tested materials. The experiment consists of a hollow cylinder of clayey material, which is subjected to THM loadings. The modelling of this experiment is realised with different constitutive laws (thermo-elasticity, elastic-perfectly plastic laws, hardening plasticity and/or thermo-plasticity). Results show that the choice of the THM model is a key issue for the prediction of the process implied in this modelling. For the current objective of this work, the assumption of isotropy was found to be fair enough. However, preliminary experimental results got in WP3 of the present project point out a certain mechanical anisotropy of the tested clay. Consequently, further development of constitutive laws considering mechanical anisotropy will probably be necessary in the future.

Details

Original languageEnglish
Title of host publicationImpact of thermo-hydro-mechanical chemical (THMC) processes on the safety of underground radioactive waste repositories. Proceedings of the European Commission TIMODAZ-THERESA International Conference, Luxembourg, 29 September – 1 October 2009
Place of PublicationBrussels, Belgium
Pages391-395
Publication statusPublished - Dec 2012
EventTIMODAZ-THERESA International Conference - European Commission, Luxembourg, Luxembourg
Duration: 29 Sep 20091 Oct 2009

Publication series

NameEUR report
NumberEUR 25527 EN

Conference

ConferenceTIMODAZ-THERESA International Conference
Country/TerritoryLuxembourg
CityLuxembourg
Period2009-09-292009-10-01

Keywords

  • Thermo-hydro-mechanical modelling of hollow cylinder laboratory exeriments on Boom Clay

ID: 160345