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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
An advanced grain-based model to characterize mechanical behaviors of crystalline rocks with different weathering degrees

文献类型：期刊论文

作者Huang, Xiaolin2,3,4; Qi, Shengwen2,3,4; Zheng, Bowen2,3,4; Liang, Ning2,3,4; Li, Lihui2,3,4; Xue, Lei2,3,4; Guo, Songfeng2,3,4; Sun, Xiang1; Tai, Daping2,3,4
刊名ENGINEERING GEOLOGY
出版日期2021
卷号280页码:14
关键词Crystalline rocks Mechanical characteristics Weathering-induced weakening Advanced grain-based model Microstructure UDEC
ISSN号0013-7952
DOI10.1016/j.enggeo.2020.105951
英文摘要Laboratory tests revealed that by enhancing the weathering degree, a transition of pre-peak stress-strain mechanical responses of crystalline rocks under unconfined compression from approximate linearity to nonlinearity was evident, as was the weakening of macro-mechanical properties. However, thus far, very few numerical studies have been conducted to quantitatively characterize the strong-to-weak transition of the mechanical behaviors of crystalline rocks modulated by the weathering degree. We propose an advanced grain-based model (AGBM) using Universal Distinct Element Code (UDEC) to characterize mechanical characteristics of crystalline rocks with different weathering degrees. The weathering-induced deterioration of microstructures was treated as loosening of grain contacts and weakening of their properties. It was proved that the grain contact model that considered hardening nonlinear deformation in compression and linearly elastic deformation in tension or shear was feasible and applicable to characterize the mechanical behaviors of crystalline rocks with different weathering degrees. The compression hardening deformation of grain contacts significantly affected the macro nonlinear stress-strain relation and stress thresholds of crack closure, crack imitation, stable crack growth, and unstable crack growth. We acquired new insights on the weathering-induced weakening of macro-mechanical characteristics of crystalline rock, which resulted from weakening of deformation properties of the grain contact more than grain contact strength.
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0904] ; Key Deployment Program of the Chinese Academy of Sciences[KFZD-SW-422] ; Key Research Program of the Institute of Geology & Geophysics, CAS[IGGCAS201903402] ; National Natural Science Foundation of China[41807273] ; National Natural Science Foundation of China[41672307] ; National Natural Science Foundation of China[41825018] ; National Natural Science Foundation of China[41941018] ; National Natural Science Foundation of China[41902289] ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Chinese Academy of Sciences[KLSG201702]
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:000615526300029
出版者ELSEVIER
资助机构Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; 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 ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; 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 ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; 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 ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; 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 ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Science Foundation of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/100067]  
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Huang, Xiaolin; Qi, Shengwen
作者单位1.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Xiaolin,Qi, Shengwen,Zheng, Bowen,et al. An advanced grain-based model to characterize mechanical behaviors of crystalline rocks with different weathering degrees[J]. ENGINEERING GEOLOGY,2021,280:14.
APA Huang, Xiaolin.,Qi, Shengwen.,Zheng, Bowen.,Liang, Ning.,Li, Lihui.,...&Tai, Daping.(2021).An advanced grain-based model to characterize mechanical behaviors of crystalline rocks with different weathering degrees.ENGINEERING GEOLOGY,280,14.
MLA Huang, Xiaolin,et al."An advanced grain-based model to characterize mechanical behaviors of crystalline rocks with different weathering degrees".ENGINEERING GEOLOGY 280(2021):14.

入库方式： OAI收割

来源：地质与地球物理研究所

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