Abstract
Understanding the time-dependent strength degradation and associated creep behavior is essential to the safety evaluation of a radioactive waste disposal system in rock. In this study, a series of constant loading tests under different confining pressures and temperatures with acoustic emission monitoring have been performed to study evolution of dilatancy (damage) and strength degradation. Source location analysis and moment tensor analysis were carried out to reproduce the progressive damage process during constant load helping to understand the failure mechanism from a microscopic point of view. In this paper, we report on the findings of the experimental results.
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