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  4. 中国科学院页岩气与地质工程重点实验室
X-ray computed tomography (CT) observations of crack damage evolution in soil-rock mixture during uniaxial deformation

文献类型：期刊论文

作者Wang, Y.1; Li, C. H.1; Hu, Y. Z.2
刊名ARABIAN JOURNAL OF GEOSCIENCES
出版日期2018-05-01
卷号11期号:9
ISSN号1866-7511
关键词Soil and rock mixture (SRM) X-ray CT Crack damage evolution In situ visualization
DOI10.1007/s12517-018-3561-z
文献子类Article
英文摘要In most soil and rock mixture (SRM) experiments, the cracks develop during deformation are only observed after failure, and detailed mapping of crack evolution remains speculative. X-ray computerized tomography (X-ray CT) offers a feasible way to observe "in vivo" some of the characteristics of a tested specimen during its deformation. Therefore, we designed a special loading device combined with a 450-kV industrial X-ray CT machine to conduct deformation experiments for SRM. During testing, an axial load is applied during deformation of the SRM specimen with a rock block percentage of 30% (mass ratio), and six loading stages performed CT scanning in real-time. The crack initiation, propagation, and coalescence phenomenon can be vividly observed during deformation. The cracks have been identified and extracted using a series of digital image processing. In addition, the geometry characteristics of cracks (e.g., length, area, width, and fractal dimension) at each scanning stage have been statistically studied. What is more, the relationships between crack geometries and axial strain are discussed. The interaction between the soil matrix and rock blocks strongly influences the crack geometry morphology and probability density distribution during deformation.
WOS关键词MECHANICAL-PROPERTIES ; PORE-SCALE ; VISUALIZATION ; STRENGTH ; BEHAVIOR ; TESTS ; IMAGE
WOS研究方向Geology
语种英语
出版者SPRINGER HEIDELBERG
WOS记录号WOS:000432106300026
资助机构National Natural Science Foundation of China(41502294 ; National Natural Science Foundation of China(41502294 ; Fundamental Research Funds for the Central Universities(2302017FRF-TP-17-027A1) ; Fundamental Research Funds for the Central Universities(2302017FRF-TP-17-027A1) ; National Key Technologies Research & Development Program(2017YFC0804609) ; National Key Technologies Research & Development Program(2017YFC0804609) ; National Key Basic Research Program of China (973 Program)(2015CB060200) ; National Key Basic Research Program of China (973 Program)(2015CB060200) ; 51574014) ; 51574014) ; National Natural Science Foundation of China(41502294 ; National Natural Science Foundation of China(41502294 ; Fundamental Research Funds for the Central Universities(2302017FRF-TP-17-027A1) ; Fundamental Research Funds for the Central Universities(2302017FRF-TP-17-027A1) ; National Key Technologies Research & Development Program(2017YFC0804609) ; National Key Technologies Research & Development Program(2017YFC0804609) ; National Key Basic Research Program of China (973 Program)(2015CB060200) ; National Key Basic Research Program of China (973 Program)(2015CB060200) ; 51574014) ; 51574014) ; National Natural Science Foundation of China(41502294 ; National Natural Science Foundation of China(41502294 ; Fundamental Research Funds for the Central Universities(2302017FRF-TP-17-027A1) ; Fundamental Research Funds for the Central Universities(2302017FRF-TP-17-027A1) ; National Key Technologies Research & Development Program(2017YFC0804609) ; National Key Technologies Research & Development Program(2017YFC0804609) ; National Key Basic Research Program of China (973 Program)(2015CB060200) ; National Key Basic Research Program of China (973 Program)(2015CB060200) ; 51574014) ; 51574014) ; National Natural Science Foundation of China(41502294 ; National Natural Science Foundation of China(41502294 ; Fundamental Research Funds for the Central Universities(2302017FRF-TP-17-027A1) ; Fundamental Research Funds for the Central Universities(2302017FRF-TP-17-027A1) ; National Key Technologies Research & Development Program(2017YFC0804609) ; National Key Technologies Research & Development Program(2017YFC0804609) ; National Key Basic Research Program of China (973 Program)(2015CB060200) ; National Key Basic Research Program of China (973 Program)(2015CB060200) ; 51574014) ; 51574014)
源URL[http://ir.iggcas.ac.cn/handle/132A11/88227]  
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Wang, Y.
作者单位1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Dept Civil Engn, Beijing Key Lab Urban Underground Space Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Y.,Li, C. H.,Hu, Y. Z.. X-ray computed tomography (CT) observations of crack damage evolution in soil-rock mixture during uniaxial deformation[J]. ARABIAN JOURNAL OF GEOSCIENCES,2018,11(9).
APA Wang, Y.,Li, C. H.,&Hu, Y. Z..(2018).X-ray computed tomography (CT) observations of crack damage evolution in soil-rock mixture during uniaxial deformation.ARABIAN JOURNAL OF GEOSCIENCES,11(9).
MLA Wang, Y.,et al."X-ray computed tomography (CT) observations of crack damage evolution in soil-rock mixture during uniaxial deformation".ARABIAN JOURNAL OF GEOSCIENCES 11.9(2018).

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来源：地质与地球物理研究所

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