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  2. 地质与地球物理研究所
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  4. 中国科学院页岩气与地质工程重点实验室
Fracture evolution analysis of soil-rock mixture in contrast with soil by CT scanning under uniaxial compressive conditions

文献类型：期刊论文

作者Sun XiuKuo1,2,3; Li Xiao1,2,3; Mao TianQiao1,3; Zheng Bo1,3; Wu YanFang1,2,3; Li GuanFang1,3
刊名SCIENCE CHINA-TECHNOLOGICAL SCIENCES
出版日期2021-10-21
页码10
ISSN号1674-7321
关键词soil-rock mixture fracture evolution real-time CT scanning CT value crack width
DOI10.1007/s11431-020-1888-9
英文摘要Soil-rock mixture (SRM), as a type of extremely heterogeneous geomaterial, is very common in nature and engineering. The fracture and damage of SRM often induce severe geological disasters. Hence, it is important to analyze the fracture evolution process of this material. In the present research, real-time computed tomography (CT) scanning was conducted on SRM and pure soil samples under uniaxial compressive experiments to investigate the influence of rocks on fracture evolution in SRM. The initiation of cracks, the original values of, and variations in, average density and heterogeneity in the soil matrix, the crack width evolution during loading, and the final failure modes were all studied. Cracks with a width greater than 0.1 mm will not arise until over 90% of ultimate stress is reached. In general, in SRM, areas where the initial average density of the soil matrix is smaller and the initial heterogeneity is greater, are much easier to crack, but the results for pure soil show the opposite effect. According to fracturing conditions shown in CT slices, fracturing and non-fracturing areas in the soil matrix were investigated. The average density of the soil matrix decreases in all areas under loading, except non-fracturing areas in SRM. For the whole sample, the increase in heterogeneity in the soil matrix of SRM is greater than that of pure soil; but for the fracturing areas, this increase in pure soil is greater. Besides, the average and standard deviations of crack width both follow logarithmic distributions with high correlation coefficients.
WOS关键词MECHANICAL-PROPERTIES ; COMPUTED-TOMOGRAPHY ; DEFORMATION ; PROPAGATION ; SHALE
资助项目National Natural Science Foundation of China[42090023] ; National Natural Science Foundation of China[51734009] ; National Natural Science Foundation of China[42002279] ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences[KLSG201708]
WOS研究方向Engineering ; Materials Science
语种英语
出版者SCIENCE PRESS
WOS记录号WOS:000710338600001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/102979]  
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Li Xiao
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, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Sun XiuKuo,Li Xiao,Mao TianQiao,et al. Fracture evolution analysis of soil-rock mixture in contrast with soil by CT scanning under uniaxial compressive conditions[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2021:10.
APA Sun XiuKuo,Li Xiao,Mao TianQiao,Zheng Bo,Wu YanFang,&Li GuanFang.(2021).Fracture evolution analysis of soil-rock mixture in contrast with soil by CT scanning under uniaxial compressive conditions.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,10.
MLA Sun XiuKuo,et al."Fracture evolution analysis of soil-rock mixture in contrast with soil by CT scanning under uniaxial compressive conditions".SCIENCE CHINA-TECHNOLOGICAL SCIENCES (2021):10.

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来源：地质与地球物理研究所

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