DECOVALEX-2019 (Task B Final Report)
- Swiss Federal Nuclear Safety Inspectorate (ENSI) (Switzerland)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Canadian Nuclear Safety Commission (CNSC), ON (Canada)
- DynaFrax UG (Germany)
- Federal Inst. for Geosciences and Natural Resources (BGR) (Germany)
- Inst. of Nuclear Energy Research (INER) (Taiwan)
- Korea Inst. of Geoscience and Mineral Resources (KIGAM) (Korea)
- ETH Zürich (Switzerland). Swiss Seismological Service
The DECOVALEX Project is an on-going international research collaboration, established in 1992, to advance the understanding and modeling of coupled Thermal (T), Hydrological (H), Mechanical (M) and Chemical (C) processes in geological in geological systems. DECOVALEX was initially motivated by the recognition that prediction of these coupled effects is an essential part of the performance and safety assessment of geologic disposal systems for radioactive waste and spent nuclear fuel. This document is the final report of Task B which was proposed and coordinated by the Swiss Federal Nuclear Safety Inspectorate (ENSI) and Lawrence Berkeley National Laboratory (LBNL), presenting the technical definitions of the problems studied, approaches applied, achievements made and outstanding issues for future research. Task B focused mainly on modelling of fault activation experiments (FS experiment) recently performed at the Mont Terri underground research laboratory, Switzerland. The FS experiment explores the coupling between fault reactivation in a clay host rock and the potential-enhanced fluid displacement through a previously low-permeability formation. Based on this experiment, the DECOVALEX-2019 Task B addresses how the change in permeability induced by the fault activation and the resulting fluid flow within the fault can be simulated including the dependence on its mechanical behavior. This will support the understanding of the processes during fault activation itself and it can help to determine consequences for contaminant transport due to potentially created permeable flow paths in otherwise low permeability argillaceous rocks.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- Contributing Organization:
- DECOVALEX Project
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1762802
- Report Number(s):
- LBNL-2001263
- Country of Publication:
- United States
- Language:
- English
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