Discrete and continuum approaches to simulate the thermo-hydro-mechanical couplings in a large, fractured rock mass

The study of coupled thermal, mechanical and hydraulic phenomena in fractured rock mass like granite is of major importance for underground wastes repositories. There exist two possible approaches to model a highly fractured rock mass: either represent each fracture individually or use an equivalent...

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Bibliographic Details
Published in:International journal of rock mechanics and mining sciences & geomechanics abstracts 1995, Vol.32 (5), p.409-434
Main Authors: Millard, A., Durin, M., Stietel, A., Thoraval, A., Vuillod, E., Baroudi, H., Plas, F., Bougnoux, A., Vouille, G., Kobayashi, A., Hara, K., Fujita, T., Ohnishi, Y.
Format: Article
Language:English
Subjects:
Earth Sciences
Environmental Sciences
Sciences of the Universe
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Summary:The study of coupled thermal, mechanical and hydraulic phenomena in fractured rock mass like granite is of major importance for underground wastes repositories. There exist two possible approaches to model a highly fractured rock mass: either represent each fracture individually or use an equivalent continuum. These two approaches have been compared in the frame of a bench mark test (BMT1) on an hypothetic regularly fractured medium hosting nuclear wastes. The methodologies, as well as the algorithms used by the various research teams who participated in the exercise, are presented in detail. The thermal and mechanical results compare rather well, while hydraulic results show pronounced differences which can be partly attributed to the non-linear dependance of the fracture hydraulic conductivity in terms of the aperture.
ISSN:0148-9062
1879-2073
DOI:10.1016/0148-9062(95)00033-D