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논문 기본 정보

자료유형
학술저널
저자정보
Chen, Jie (State Key Laboratory of Coal Mine Disaster Dynamics and Controls, Chongqing University) Du, Chao (China Southwest Geotechnical Investigation & Design Institute CO., LTD.) Jiang, Deyi (State Key Laboratory of Coal Mine Disaster Dynamics and Controls, Chongqing University) Fan, Jinyang (State Key Laboratory of Coal Mine Disaster Dynamics and Controls, Chongqing University) He, Yi (State Key Laboratory of Coal Mine Disaster Dynamics and Controls, Chongqing University)
저널정보
테크노프레스 Geomechanics & engineering Geomechanics & engineering 제10권 제3호
발행연도
2016.1
수록면
325 - 334 (10page)

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Rock salt is a near-perfect material for gas storage repositories due to its excellent ductility and low permeability. Gas storage in rock salt layers during gas injection and gas production causes the stress redistribution surrounding the cavity. The triaxial cyclic loading and unloading tests for rock salt were performed in this paper. The elastic-plastic deformation behaviour of rock salt under cyclic loading was observed. Rock salt experienced strain hardening during the initial loading, and the irreversible deformation was large under low stress station, meanwhile the residual stress became larger along with the increase of deviatoric stress. Confining pressure had a significant effect on the unloading modulus for the variation of mechanical parameters. Based on the theory of elastic-plastic damage mechanics, the evolution of damage during cyclic loading and unloading under various confining pressure was described.

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