Abstract
The numerical code MHERLIN is being applied to the Gas Migration Test (GMT) at the Grimsel rock laboratory/Switzerland. The ongoing GMT experiment, by the Japanese Radioactive Waste Management Funding and Research Center RWMC, is located at the Grimsel test site in Switzerland. It studies the gas migration through a sand-bentonite engineered barrier system under conditions that are close to those expected in a repository for radioactive waste in a crystalline host rock when gas is generated by the waste through steel corrosion. The model used is based on the continuum theory of mixtures and treats the soil as a three phase porous medium (solid, liquid and gas). The principal field variables are solid deformation, liquid pressure and gas pressure. In this paper we report the comparison between calculations and measured results for the resaturation of the engineered barrier.
Published Version
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