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  4. 中国科学院页岩气与地质工程重点实验室
On the effect of freeze-thaw on fracture and instability of hole-fissure-contained granite under uniaxial variable frequency-amplitude cyclic loads

文献类型：期刊论文

作者Wang, Yu2; Zhu, Chun3; Song, Zhenyang3; Mao, Tianqiao1
刊名COLD REGIONS SCIENCE AND TECHNOLOGY
出版日期2022-06-01
卷号198页码:19
关键词Cyclic loads FT cycle Damage evolution Instability modes
ISSN号0165-232X
DOI10.1016/j.coldregions.2022.103554
英文摘要This work aims at investigating the fracture and instability behaviors of Xinjiang granite containing hole and fissures under freeze-thaw (FT) and cyclic loads using acoustic emission (AE) monitoring and X-ray computed tomography (CT) imaging. The stress path is sinusoidal load with decreasing frequency and increasing amplitude pattern. The experimental results reveal a sudden increase of volumetric strain and a sudden decrease of AE-b value. Their increasing rate becomes quick as cycle increases reflecting the rapid propagation of damage. The frequency of AE activities displays different proportions that is impacted by the FT cycle. The percentage of the low-frequency and high-frequency signals is relatively high and low respectively for a rock experiencing more FT cycles. The theoretical description of F-T influence coupled with mechanical performance are performed. Based on acoustic emission energy, a damage evolution model considering the coupling effect of freezing-thawing cycle and cyclic load is proposed, which can fit the experimental data well. A series of CT images reveal the influence of freeze-thaw on rock failure modes. Typical failure modes of double shear coalescence, single shear coalescence and single tensile coalescence failure modes were identified from the reconstructured CT images.
WOS关键词ACOUSTIC-EMISSION ; SANDSTONE ; ROCKS ; GLACIERS ; BEHAVIOR ; WAVE ; CT
资助项目National Natural Science Founda-tion of China[52174069] ; Beijing Natural Science Foundation[8202033] ; National key technologies Research & Development pro-gram[2018YFC0808402] ; Fundamental Research Funds for the Central Universities[FRF-TP-20-004A2]
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:000795077800002
出版者ELSEVIER
资助机构National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National key technologies Research & Development pro-gram ; National key technologies Research & Development pro-gram ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National key technologies Research & Development pro-gram ; National key technologies Research & Development pro-gram ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National key technologies Research & Development pro-gram ; National key technologies Research & Development pro-gram ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Founda-tion of China ; National Natural Science Founda-tion of China ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National key technologies Research & Development pro-gram ; National key technologies Research & Development pro-gram ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
源URL[http://ir.iggcas.ac.cn/handle/132A11/105941]  
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, Yu
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100190, Peoples R China
2.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing Key Lab Urban Underground Space Engn, Dept Civil Engn, Beijing 100083, Peoples R China
3.Hohai Univ, Sch Earth Sci & Engn, Nanjing 210098, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Yu,Zhu, Chun,Song, Zhenyang,et al. On the effect of freeze-thaw on fracture and instability of hole-fissure-contained granite under uniaxial variable frequency-amplitude cyclic loads[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2022,198:19.
APA Wang, Yu,Zhu, Chun,Song, Zhenyang,&Mao, Tianqiao.(2022).On the effect of freeze-thaw on fracture and instability of hole-fissure-contained granite under uniaxial variable frequency-amplitude cyclic loads.COLD REGIONS SCIENCE AND TECHNOLOGY,198,19.
MLA Wang, Yu,et al."On the effect of freeze-thaw on fracture and instability of hole-fissure-contained granite under uniaxial variable frequency-amplitude cyclic loads".COLD REGIONS SCIENCE AND TECHNOLOGY 198(2022):19.

入库方式： OAI收割

来源：地质与地球物理研究所

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