中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Fracture Evolution and Energy Characteristics During Marble Failure Under Triaxial Fatigue Cyclic and Confining Pressure Unloading (FC-CPU) Conditions

文献类型:期刊论文

作者Wang, Y.2,3; Feng, W. K.2; Hu, R. L.1; Li, C. H.3
刊名ROCK MECHANICS AND ROCK ENGINEERING
出版日期2020-11-13
页码20
ISSN号0723-2632
关键词Fatigue cyclic loading Confining pressure unloading Fracture pattern Energy evolution CT scanning
DOI10.1007/s00603-020-02299-6
英文摘要This work aims at investigating the fracture evolution and energy characteristics of marble subjected to fatigue cyclic loading and confining pressure unloading (FC-CPU) conditions. Although rocks under separated fatigue cyclic loading and triaxial unloading conditions have been well studied, little is known about the dependence of the fatigue damage accumulation on the subsequent confining pressure unloading condition that influences the rock fracture behaviors. In this work, the servo-controlled GCTS 2000 rock mechanical system combined with the post-test X-ray computed tomography (CT) scanning technique were used to reveal the fracture behaviors of the marble samples. The samples were tested at three stages: the static loading stage, the fatigue cyclic loading stage, and the confining pressure unloading stage. Results show that the damage index-cycle number curve shows a different pattern-the damage increasing rate is different for the samples experiencing different fatigue damage. The damage accumulation at the fatigue cyclic stage influences the final failure mode and energy conversion. In addition, post-test CT scanning further reveals the effects of fatigue cycles on the crack pattern, as well as the stimulated crack scale and density after FC-CPU testing depending on the fatigue cycle. Furthermore, the stored elastic energy decreases and the dissipated energy increases with increasing fatigue cycle at the fatigue loading stage, and the energy conversion is consistent with the crack pattern analysis. By investigating the failure mechanism of marble under FC-CPU conditions, a theoretical basis for rock dynamic disaster prediction can be created.
WOS关键词RAY COMPUTED-TOMOGRAPHY ; MESO-STRUCTURAL CHANGES ; MECHANICAL-PROPERTIES ; HARD-ROCK ; SALT ROCK ; SANDSTONE ; BEHAVIOR ; STRESS ; STRAIN ; CT
资助项目Beijing Natural Science Foundation of China[8202033] ; National Key Technologies Research and Development Program[2018YFC0808402] ; Key Laboratory of Geo-hazards Prevention and Geo-environment Protection (Chengdu University of Technology)[SKLGP2019K017] ; Fundamental Research Funds for the Central Universities[FRF-TP-20-004A2]
WOS研究方向Engineering ; Geology
语种英语
出版者SPRINGER WIEN
WOS记录号WOS:000589484900001
资助机构Beijing Natural Science Foundation of China ; Beijing Natural Science Foundation of China ; National Key Technologies Research and Development Program ; National Key Technologies Research and Development Program ; Key Laboratory of Geo-hazards Prevention and Geo-environment Protection (Chengdu University of Technology) ; Key Laboratory of Geo-hazards Prevention and Geo-environment Protection (Chengdu University of Technology) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Beijing Natural Science Foundation of China ; Beijing Natural Science Foundation of China ; National Key Technologies Research and Development Program ; National Key Technologies Research and Development Program ; Key Laboratory of Geo-hazards Prevention and Geo-environment Protection (Chengdu University of Technology) ; Key Laboratory of Geo-hazards Prevention and Geo-environment Protection (Chengdu University of Technology) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Beijing Natural Science Foundation of China ; Beijing Natural Science Foundation of China ; National Key Technologies Research and Development Program ; National Key Technologies Research and Development Program ; Key Laboratory of Geo-hazards Prevention and Geo-environment Protection (Chengdu University of Technology) ; Key Laboratory of Geo-hazards Prevention and Geo-environment Protection (Chengdu University of Technology) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Beijing Natural Science Foundation of China ; Beijing Natural Science Foundation of China ; National Key Technologies Research and Development Program ; National Key Technologies Research and Development Program ; Key Laboratory of Geo-hazards Prevention and Geo-environment Protection (Chengdu University of Technology) ; Key Laboratory of Geo-hazards Prevention and Geo-environment Protection (Chengdu University of Technology) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
源URL[http://ir.iggcas.ac.cn/handle/132A11/98681]  
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.Chinese Acad Sci, Key Lab Shale Gas & Geoengn, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
3.Univ Sci & Technol Beijing, Beijing Key Lab Urban Underground Space Engn, Dept Civil Engn, Sch Civil & Resource Engn, 30 Xueyuan Rd, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714
Wang, Y.,Feng, W. K.,Hu, R. L.,et al. Fracture Evolution and Energy Characteristics During Marble Failure Under Triaxial Fatigue Cyclic and Confining Pressure Unloading (FC-CPU) Conditions[J]. ROCK MECHANICS AND ROCK ENGINEERING,2020:20.
APA Wang, Y.,Feng, W. K.,Hu, R. L.,&Li, C. H..(2020).Fracture Evolution and Energy Characteristics During Marble Failure Under Triaxial Fatigue Cyclic and Confining Pressure Unloading (FC-CPU) Conditions.ROCK MECHANICS AND ROCK ENGINEERING,20.
MLA Wang, Y.,et al."Fracture Evolution and Energy Characteristics During Marble Failure Under Triaxial Fatigue Cyclic and Confining Pressure Unloading (FC-CPU) Conditions".ROCK MECHANICS AND ROCK ENGINEERING (2020):20.

入库方式: OAI收割

来源:地质与地球物理研究所

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