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Jia, Lichun*,MECHANICS RESEARCH COMMUNICATIONS, 2013, 50: 58-62

来源:油气资源与探测国家重点实验室  发布日期:2013-10-08 
 
Experimental study and numerical modeling of brittle fracture of carbonate rock under uniaxial compression
 
Jia, Lichun*; Chen, Mian; Zhang, Wei; Xu, Tong; Zhou, Yu; Hou, Bing; Jin,
Yan
 
Abstract
 
 
The brittle carbonate rock taken from the Tarim Oilfield is tested in laboratory under uniaxial compression. The acoustic emission (AE) is used to monitor the microcracking activity in rock during the experiment. Moreover, the 3D tomograms of carbonate rock after uniaxial compression are obtained by using CT imaging technology, which indicates that microcracks mutually interconnect and eventually form macroscopic fractures after failure. The PFC2D is used to model the behavior of brittle rock including microcracks propagation. The stress-strain curve and cracks distribution in rock model are obtained from the PFC simulation. The numerical results agree with the experimental test well.