(1. Ertan Hydropower Development Co.，Ltd.，Chengdu，Sichuan 610051，China；2. Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education，Beijing University of Technology，Beijing 100124，China；3. School of Civil Engineering，Yantai University，Yantai，Shandong 264005，China)
Abstract：During the tunnel boring machine(TBM) excavation，two types of slabbing failures in these deep-buried marble tunnels are discussed. One is violent slabbing rock burst and the other is non-voilent slabbing and spalling. In order to study the slabbing failure，true triaxial experiments for modeling the rock burst at different in-situ stresses are carried out. Results show that all of the specimens appeared slabbing. The phenomena observed in the experiments are very similar to that at the tunnel site in Jinping II hydropower station. The experiment explains basically the tunnel face and tunnel side rock failure phenomena at present，and also displays the main failure types during the TBM excavation in the future. The influence of the slabbing failure at tunnel face and tunnel side on TBM excavation is analyzed and discussed.
吴世勇，龚秋明，王鸽，侯哲生，佘祺锐. 锦屏II级水电站深部大理岩板裂化破坏 试验研究及其对TBM开挖的影响[J]. 岩石力学与工程学报, 2010, 29(06): 1089-1095.
WU Shiyong1，GONG Qiuming2，WANG Ge1，HOU Zhesheng3，SHE Qirui2. EXPERIMENTAL STUDY OF SLABBING FAILURE FOR DEEP- BURIED MARBLE AT JINPING II HYDROPOWER STATION AND ITS INFLUENCES ON TBM EXCAVATION. , 2010, 29(06): 1089-1095.
