SIMULATION PAR LE MODÈLE DE FRACTURES MULTIPLES : PHASE I, ESSAI DE RÉFÉRENCE 2 DU PROJET DECOVALEX
Whiteshell Laboratories, 1993 - DECOVALEX (Project) - 38 pages
DECOVALEX is an international cooperative project for the development of coupled models and their validation against experiments in nuclear waste isolation. This project emphasized the coupled thermo-hydro-mechanical effects in jointed hard rock. In the first phase of DECOVALEX, two benchmark tests and one test case were selected for modelling. This report describes the results of the second benchmark test, the multiple-fracture model, that relates to groundwater flow and coupled thermo-hydro- mechanical deformation in a simple system comprising several blocks of porous medium and several intersecting fractures. The simulation domain is a rectangular box that is made up of an assemblage of nine blocks separated by two sets of discontinuities (planar fractures). The rock mass is subjected to in situ stress and thermal loading as well as hydraulic gradient. Both no-flow and adiabatic boundary conditions are imposed at the top and bottom of the model. The MOTIF finite-element code was used to simulate this problem.
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