Mechanical Property Measurements and Fracture Propagation Analysis of Longmaxi Shale by Micro-CT Uniaxial Compression

doi:10.3390/en11061409

CORC > 地质与地球物理研究所 > 中国科学院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

	Mechanical Property Measurements and Fracture Propagation Analysis of Longmaxi Shale by Micro-CT Uniaxial Compression
	Zhou, Minyue 1,2,3; Zhang, Yifei 1,2,3; Zhou, Runqing 1,2; Hao, Jin 1,2; Yang, Jijin 1,2,3
刊名	ENERGIES
	2018-06-01
卷号	11 期号:6
关键词	shale fracture propagation layer orientation micro-CT uniaxial compression
ISSN号	1996-1073
DOI	10.3390/en11061409
文献子类	Article
英文摘要	The mechanical properties and fracture propagation of Longmaxi shale loading under uniaxial compression were measured using eight cylindrical shale specimens (4 mm in diameter and 8 mm in height), with the bedding plane oriented at 0 degrees and 90 degrees to the axial loading direction, respectively, by micro computed tomography (micro-CT). Based on the reconstructed three-dimensional (3-D) CT images of cracks, different stages of the crack growth process in the 0 degrees and 90 degrees orientation specimen were revealed. The initial crack generally occurred at relatively smaller loading force in the 0 degrees bedding direction specimen, mainly in the form of tensile splitting along weak bedding planes. Shear sliding fractures were dominant in the specimens oriented at 90 degrees, with a small number of parallel cracks occurring on the bedding plane. The average thickness and volume of cracks in the 90 degrees specimen is higher than those for the specimen oriented at 0 degrees. The geometrical characterization of fractures segmented from CT scan binary images shows that a specific surface area correlates with tortuosity at the different load stages of each specimen. The 3-D box-counting dimension (BCD) calculations can accurately reflect crack evolution law in the shale. The results indicate that the cracks have a more complex pattern and rough surface at an orientation of 90 degrees, due to crossed secondary cracks and shear failure.
WOS关键词	X-RAY CT ; TRIAXIAL COMPRESSION ; STRENGTH ANISOTROPY ; SCANNING TECHNOLOGY ; BEHAVIOR ; FAILURE ; DEFORMATION ; SIZE ; COAL ; DIMENSION
WOS研究方向	Energy & Fuels
语种	英语
出版者	MDPI
WOS记录号	WOS:000436552700087
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10050100) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Science and Technology Major Project(2016ZX05034) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; Chinese National Natural Science Foundation(21661670) ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts ; The Recruitment Program of Global Experts
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88157]
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, Jijin
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Minyue,Zhang, Yifei,Zhou, Runqing,et al. Mechanical Property Measurements and Fracture Propagation Analysis of Longmaxi Shale by Micro-CT Uniaxial Compression[J]. ENERGIES,2018,11(6).
APA	Zhou, Minyue,Zhang, Yifei,Zhou, Runqing,Hao, Jin,&Yang, Jijin.(2018).Mechanical Property Measurements and Fracture Propagation Analysis of Longmaxi Shale by Micro-CT Uniaxial Compression.ENERGIES,11(6).
MLA	Zhou, Minyue,et al."Mechanical Property Measurements and Fracture Propagation Analysis of Longmaxi Shale by Micro-CT Uniaxial Compression".ENERGIES 11.6(2018).