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X-ray micro-computed tomography study of the propagation of cracks in shale during uniaxial compression

文献类型：期刊论文

作者Yang, Baicun1,2,3; Xue, Lei1,2,3; Zhang, Ke1,2,3
刊名ENVIRONMENTAL EARTH SCIENCES
出版日期2018-09-01
卷号77期号:18页码:9
关键词X-ray micro-CT Crack propagation Damage evolution Failure mechanism En echelon cracks
ISSN号1866-6280
DOI10.1007/s12665-018-7843-2
英文摘要An understanding of crack propagation is critical for the development of rock mechanic models. To study the propagation of internal cracks in situ and determine their formation mechanism, a series of uniaxial compression tests on shale specimens were conducted using a novel setup that combines X-ray micro-computed tomography (X-ray micro-CT) with a uniaxial loading apparatus, which allows CT scans to be performed during compression. Macro- and micro-scale internal cracks were extracted from CT images collected after various stages of deformation through image thresholding segmentation, providing a record of the evolution of damage within the specimens, characterized by crack closure, generation, growth, and penetration. In addition, macroscopic cracks with two distinct orientations were observed and their formation mechanism was further determined. Furthermore, test results show that the distribution of pyrite grains influences the formation of cracks at the meso- and macro-scales. These results are significant for understanding crack propagation and the failure of shale.
WOS关键词TRIAXIAL COMPRESSION ; ROCK ; COALESCENCE ; FRACTURE ; GRANITE ; GROWTH
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB10030302]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Water Resources
语种英语
WOS记录号WOS:000445416800005
出版者SPRINGER
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/88710]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Yang, Baicun; Xue, Lei
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Baicun,Xue, Lei,Zhang, Ke. X-ray micro-computed tomography study of the propagation of cracks in shale during uniaxial compression[J]. ENVIRONMENTAL EARTH SCIENCES,2018,77(18):9.
APA Yang, Baicun,Xue, Lei,&Zhang, Ke.(2018).X-ray micro-computed tomography study of the propagation of cracks in shale during uniaxial compression.ENVIRONMENTAL EARTH SCIENCES,77(18),9.
MLA Yang, Baicun,et al."X-ray micro-computed tomography study of the propagation of cracks in shale during uniaxial compression".ENVIRONMENTAL EARTH SCIENCES 77.18(2018):9.

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来源：地质与地球物理研究所

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