Reactive and non-reactive transport modelling in partially water saturated argillaceous porous media around the ventilation experiment, Mont Terri - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Rock Mechanics and Geotechnical Engineering Année : 2013

Reactive and non-reactive transport modelling in partially water saturated argillaceous porous media around the ventilation experiment, Mont Terri

Alexander Bond
  • Fonction : Auteur
Steven Benbow
  • Fonction : Auteur
James Wilson
  • Fonction : Auteur
Shigeo Nakama
  • Fonction : Auteur
Myles English
  • Fonction : Auteur
Christopher Mcdermott
Benoit Garitte
  • Fonction : Auteur

Résumé

At Mont Terri Underground Research Laboratory (URL) Switzerland, a specific experiment has been performed in a tunnel, in order to investigate the hydro-mechano-chemical (HMC) perturbations induced in the argillaceous formation by forced ventilation. This experiment has been selected in the international project DECOVALEX to be used for process model development and validation. The numerical simulation of the geochemical response to the ventilation experiment (VE) is the object of the present paper, focusing on the transport of chloride as a conservative species and sulphate as a reactive species. Utilising the validated hydro-mechanical (HM) results from earlier steps of the DECOVALEX task, reactive and non-reactive transport models, incorporating the current understanding of the geochemistry at the site, were successfully constructed for the whole experimental period. The associated parametric and process uncertainty analyses clearly demonstrate that the basic HM understanding must be sound. However, to demonstrate this degree of robustness, the explicit inclusion of process representations of water desaturation, liquid vaporisation, species exclusion porosity, and redox processes, is required.

Dates et versions

hal-03028527 , version 1 (27-11-2020)

Identifiants

Citer

Alexander Bond, Steven Benbow, James Wilson, Alain Millard, Shigeo Nakama, et al.. Reactive and non-reactive transport modelling in partially water saturated argillaceous porous media around the ventilation experiment, Mont Terri. Journal of Rock Mechanics and Geotechnical Engineering, 2013, 5 (1), pp.44-57. ⟨10.1016/j.jrmge.2012.06.001⟩. ⟨hal-03028527⟩

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