中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院页岩气与地质工程重点实验室
Using X-ray computed tomography to investigate the effect of confining pressure on meso-structural changes and crack damage evolution in soil and rock mixture during triaxial deformation

文献类型：期刊论文

作者Wang, Y.2; Hu, Y. Z.1,3
刊名EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
出版日期2021-03-21
卷号25期号:4页码:757-772
关键词Soil and rock mixture (SRM) X-ray computerised tomography confining pressure (CP) meso-structural changes triaxial deformation
ISSN号1964-8189
DOI10.1080/19648189.2018.1550684
英文摘要This article aims to quantitatively investigate the influence of confining pressure on the mesoscopic structural changes using X-ray computerised tomography (CT) for soil and rock mixture (SRM). While the effects of confining pressure on the macroscopic mechanical characteristics have been widely studied, the physical meso-mechanisms governing the SRM deformation are still poorly understood. A triaxial compression experiment was conducted in SRM samples with a rock block proportion of 30%, under confining pressures of 60, 120 and 200 kPa, respectively. The meso-structural changes were quantitatively studied using a macroscopic stress-strain description and mesoscopic CT image identification. Under triaxial deformation, the stress-strain curves present strain hardening behaviour, and the strength of the sample increases with the increase of confining pressure. In addition, the crack distribution is extremely non-uniform and strongly affected by the existing rock blocks. The crack scale presents a reduction trend with increasing confining pressure. What is more, the most striking observation from the CT images is that cracks may disappear during deformation owing to the interactions between the soil matrix and rock blocks. Through a series of meso-structural evolution analysis, the meso-mechanisms of the effect of confining pressure on SRM under triaxial deformation have been presented first.
资助项目National key technologies Research & Development program[2017YFC0804103] ; National key technologies Research & Development program[2018YFC0808402] ; National key technologies Research & Development program[2018YFC0604601] ; Fundamental Research Funds for the Central Universities[2302017FRF-TP17-027A1] ; State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining Technology[SKLGDUEK1824] ; National Natural Science Foundation of China[41502294]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000621229800008
出版者TAYLOR & FRANCIS LTD
资助机构National key technologies Research & Development program ; National key technologies Research & Development program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining Technology ; State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National key technologies Research & Development program ; National key technologies Research & Development program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining Technology ; State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National key technologies Research & Development program ; National key technologies Research & Development program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining Technology ; State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National key technologies Research & Development program ; National key technologies Research & Development program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining Technology ; State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/100145]  
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.China Univ Min & Technol, Key Lab GeoMech & Deep Underground Engn, Beijing, Peoples R China
2.Univ Sci & Technol Beijing, Beijing Key Lab Urban Underground Space Engn, Dept Civil Engn, Sch Civil & Resource Engn, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Y.,Hu, Y. Z.. Using X-ray computed tomography to investigate the effect of confining pressure on meso-structural changes and crack damage evolution in soil and rock mixture during triaxial deformation[J]. EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,2021,25(4):757-772.
APA Wang, Y.,&Hu, Y. Z..(2021).Using X-ray computed tomography to investigate the effect of confining pressure on meso-structural changes and crack damage evolution in soil and rock mixture during triaxial deformation.EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,25(4),757-772.
MLA Wang, Y.,et al."Using X-ray computed tomography to investigate the effect of confining pressure on meso-structural changes and crack damage evolution in soil and rock mixture during triaxial deformation".EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING 25.4(2021):757-772.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。