IGGCAS OpenIR  > 页岩气与地质工程院重点实验室
Fracture Evolution and Energy Characteristics During Marble Failure Under Triaxial Fatigue Cyclic and Confining Pressure Unloading (FC-CPU) Conditions
Wang, Y.1,2; Feng, W. K.2; Hu, R. L.3; Li, C. H.1
2020-11-13
Source PublicationROCK MECHANICS AND ROCK ENGINEERING
ISSN0723-2632
Pages20
AbstractThis 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.
KeywordFatigue cyclic loading Confining pressure unloading Fracture pattern Energy evolution CT scanning
DOI10.1007/s00603-020-02299-6
Funding OrganizationBeijing 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
WOS KeywordRAY COMPUTED-TOMOGRAPHY ; MESO-STRUCTURAL CHANGES ; MECHANICAL-PROPERTIES ; HARD-ROCK ; SALT ROCK ; SANDSTONE ; BEHAVIOR ; STRESS ; STRAIN ; CT
Language英语
Funding ProjectBeijing 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]
Funding OrganizationBeijing 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
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000589484900001
PublisherSPRINGER WIEN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/98681
Collection页岩气与地质工程院重点实验室
Corresponding AuthorWang, Y.
Affiliation1.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
2.State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
3.Chinese Acad Sci, Key Lab Shale Gas & Geoengn, Inst Geol & Geophys, Beijing 100029, Peoples R China
Recommended Citation
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.
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