Journal
MECHANICS RESEARCH COMMUNICATIONS
Volume 50, Issue -, Pages 58-62Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mechrescom.2013.04.002
Keywords
Microcracks; Uniaxial compression; AE monitoring; CT images; PFC model
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Funding
- National Natural Science Foundation of China [51204195]
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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. (c) 2013 Elsevier Ltd. All rights reserved.
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