Influence of excavation damaged zone around an underground excavaion on thermal,hydraulic, and mechanical behaviors of rock

초록

It is inevitable to have an excavation damaged zone(EDZ), in which the original rock properties are changed due to the blasting impact or stress redistribution around underground facilities In order to predict the performance of underground facilities, the understanding of the characteristics of EDZ and its influence on the thermal, hydraulic, and mechanical behaviors are important. In this study, the characteristics of an EDZ were investigated from in situ experiments and laboratory tests. Using computer simulation, the influence of the EDZ on the thermal, hydraulic, and mechanical behaviors was evaluated.