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《Chinese Journal of Geophysics》 2000-01
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INFLUENCE OF HETEROGENEITY ON CRACK PROPAGATION MODES IN BRITTLE ROCK

TANG CHUNAN; LIU HONG-YUAN(Center for Rockbursts and Induced Seismicity Research, Northeastern University, Shenyang 110006, China)QIN SI-QING; YANG ZHI-FA(Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China)  
By using a rock failure process analysis code, RFPA, the influence ofheterogeneity on crack propagation modes in rock sample containing existing flaw isnumerically studied. The numerical simulation reproduces the evolution of the stressand strain fields in crack propagation process, the mode of acoustic emission relatedtO the heterogeneity of rock and the phenomenon of rock bridge related todiscontinuous failure. It is shown that tile heterogeneity of rock containing existingflaw has an important influence on the deformation, failure process and failure mode.
【Fund】: 中国科学院地质研究所工程地质力学开放实验室开放课题
【CateGory Index】: P584
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