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The Confinement-Affected Strength Variety of Anisotropic Rock Mass

文献类型：期刊论文

作者Guo, Songfeng1,2,3; Qi, Shengwen1,2,3; Zheng, Bowen1,2,3; Xue, Lei1,2,3; Wang, Xueliang1,2,3; Liang, Ning1,2,3; Zou, Yu1,2,3; Tang, Fengjiao1,2,3; Faisal, Waqar Muhammad1,2,3; Wen, Weiluan1,2,3
刊名MATERIALS
出版日期2022-12-01
卷号15期号:23页码:13
关键词rock mass anisotropy confining pressure strength failure mechanism discontinuity
DOI10.3390/ma15238444
英文摘要It has been recognized that the anisotropic structures dominate the deformation and strength properties of laminated rock masses. The resultant strength anisotropy is strongly affected by confining pressures beyond anisotropic structures. Nevertheless, the effects of confinement are inconsistent among existing experiments and not fully understood. This study focuses on the effects of confining pressure on strength anisotropy through theoretical derivation together with experimental results analysis. The variations in the possibility of anisotropic structural plane dominant failure and strength anisotropy degree under different confining pressures are discussed. The different types of anisotropic structural planes, i.e., the fresh contact discontinuity or soft, thick layer, are found as the key factor resulting in different confinement effects. The strength anisotropy weakens gradually and vanishes eventually as confining stress increases for the anisotropic rock mass with the structural plane of fresh contact discontinuity. On the other hand, the strength does not vanish at very high confining stress and the anisotropic strength difference even rises as confining stress increases for the anisotropic rock mass with the anisotropic structural plane of the soft layer. This study improves the understanding of anisotropic rock mass mechanical behavior, especially at high confining stress, and may promote the development of excavation and supporting techniques for underground projects.
WOS关键词FAILURE CRITERION ; CLASSIFICATION-SYSTEM ; COMPRESSIVE STRENGTH ; BEHAVIOR ; MECHANISM ; MODEL
资助项目National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; [42077266] ; [41825018] ; [42141009] ; [42090051] ; [41902289] ; [2019QZKK0904] ; [2022062]
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种英语
WOS记录号WOS:000896394400001
出版者MDPI
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 ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the 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 ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the 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 ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the 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 ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP), China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/106989]  
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Guo, Songfeng
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, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Songfeng,Qi, Shengwen,Zheng, Bowen,et al. The Confinement-Affected Strength Variety of Anisotropic Rock Mass[J]. MATERIALS,2022,15(23):13.
APA Guo, Songfeng.,Qi, Shengwen.,Zheng, Bowen.,Xue, Lei.,Wang, Xueliang.,...&Yu, Xin.(2022).The Confinement-Affected Strength Variety of Anisotropic Rock Mass.MATERIALS,15(23),13.
MLA Guo, Songfeng,et al."The Confinement-Affected Strength Variety of Anisotropic Rock Mass".MATERIALS 15.23(2022):13.

入库方式： OAI收割

来源：地质与地球物理研究所

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