Real-time computerized tomography(CT) test of failure process of jointed granite under unloading in three gorges project(TGP)
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摘要:
This paper deals with the real-time computerized tomography(CT) test for monitoring the complete damage failure process of a single-crack granite specimen that is subjected to the confining pressure unloading. For this purpose, the State Key Laboratory of Frozen Soil of China has developed a special CT Triaxial Testing Equipment for Rocks and Soils that can give clear images of complete failure process of a rock specimen during removal of confining pressures, including various stages of development and penetration of cracks etc. The results have shown that it is easy for failure phenomenon to happen suddenly in the process of unloading condition of jointed rocks.