A review of excavation damage zones in sedimentary rocks with emphasis on numerical modelling for EDZ definition
Matthew A. Perras, Mark S. Diederichs, Tom Lam
In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost ConferenceSession: M2-B
ABSTRACT: In order to assess the safety performance of a DGR, it is necessary to establish the extent of the different degrees of damage to the rockmass created by the excavation process. This must include shaft, adit, room and cut-off excavation processes, throughout the life of the DGR, such that migration of radionuclides through the damaged rockmass can be adequately predicted. Perfectly plastic, strain weakening and brittle models were used to demonstrate the importance of selecting the appropriate yield criteria when using volumetric strain as an EDZ indicator.
RÉSUMÉ: Afin d'évaluer la performance de sécurité d'un DGR, il est nécessaire de prévoir adéquatement la mesure des différents degrés de dommages à la masse rocheuse, créé par le processus d'excavation. Ceci doit inclure l'arbre, galerie, salle et le seuil de processus d'excavation, tout au long de la vie de la DGR, tels que la migration des radionucléides par la masse rocheuse endommagé peut être prédit adéquatement. modèles parfaitement plastique, ce qui affaiblit la souche et fragiles ont été utilisés pour démontrer l'importance de la sélection des critères de rendement appropriés pour l'utilisation de la déformation volumétrique comme un indicateur EDZ. 1 INTRODUCTION
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Matthew A. Perras; Mark S. Diederichs; Tom Lam (2010) A review of excavation damage zones in sedimentary rocks with emphasis on numerical modelling for EDZ definition in GEO2010. Ottawa, Ontario: Canadian Geotechnical Society.
@article{GEO2010_096,
author = Matthew A. Perras; Mark S. Diederichs; Tom Lam,
title = A review of excavation damage zones in sedimentary rocks with emphasis on numerical modelling for EDZ definition,
year = 2010
}
title = A review of excavation damage zones in sedimentary rocks with emphasis on numerical modelling for EDZ definition,
year = 2010
}