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Creation of gas pathways through water-saturated argillite: experimental and numerical approaches

type de publication      communication internationale avec actes publiés
date de publication 29-03-2010
auteur(s) Duveau Gilles; Davy Catherine A.; Skoczylas Frédéric; Shao Jian-Fu
  
conférence 4th International Meeting on Clays in Natural and Engineered Barriers for Radioactive Waste Management
     dates de 29-03-2010 à 01-04-2010
     lieu Nantes, France
     nom des actes Proceedings of the abstracts of the 4th International Meeting on Clays in Natural and Engineered Barriers for Radioactive Waste Management
  
  Sous presse
résumé Gas entry experiments through bulk argillite are the first originality presented in this paper. Secondly, a collaboration has been initiated in order to predict numerically the passage of gas through argillite. Simulated physical phenomena couple gas diffusion through pore water to gas and water advective transport and also to capillarity, under hydrostatic loading of the argillite sample. Further, gas transfer through argillite host rock and bentonite seal may be predicted over much longer periods of time than our laboratory experiment (ca. 100 000 years), and for a simplified disposal pit model, e.g. (Gerard et al. 2008).
mots clés argillite, gas entry pressure, gas breakthrough pressure, FE modelling
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