Influence of Microroughness on Stick-Slip Characteristics of Fault Under Constant Normal Stiffness
文献类型:期刊论文
作者 | Zhang Chuanqing2,5; Xu Jie4; Jin Shengji4; Li Xiaoshun3; Cui Guojian2,5; Guo Yuhang2,5; Meng Fanzhen1; Zhou Hui2,5; Yan Shangyuan3 |
刊名 | ROCK MECHANICS AND ROCK ENGINEERING
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出版日期 | 2022-02-24 |
页码 | 18 |
关键词 | Constant normal stiffness (CNS) Microroughness Stick-slip phenomenon Rock burst Fault activation |
ISSN号 | 0723-2632 |
DOI | 10.1007/s00603-022-02778-y |
英文摘要 | Under the high geo-stress conditions, the stick-slip instability of faults or rock discontinuities might lead to earthquakes or rock bursts, and then significantly affects the stability of rock engineering. The surface roughness is an important factor influencing the sliding stability and nucleation characteristics. In this study, considering the constant normal stiffness (CNS) conditions of a deep rock mass around a fault plane and fault heterogeneity, a series of shear tests were conducted. The effects of the microroughness of basalt fault on its shear strength, normal stress, normal displacement, and friction sliding stability were analyzed, and the spatio-temporal evolution characteristics of acoustic emission (AE) events and the strain during the loading process were explored. The results showed that: (1) Under CNS conditions, with the increase in the shear displacement, the samples with different microroughness exhibited vastly different slide characteristics in the friction sliding process, where smoother samples were more prone to stick slip than rougher samples. (2) During the stick-slip process, the smooth basalt fault sample exhibited a nucleated fracture on the side close to the upper loading end, and the fracture gradually propagated to the other side. The fracture speed was high in the loading end, and the degree of fracture damage was significant. (3) The AE data better reflected the occurrence and expansion of damage on the fault surface. The test results provide a basis for understanding the influences of normal stiffness and microroughness of basalt fault on the sliding characteristics of smooth fault planes. |
资助项目 | Key projects of the Yalong River Joint Fund of the National Natural Science Foundation of China[U1865203] ; National Natural Science Foundation of China[41941018] ; Science and Technology Service Network Initiative of the Chinese Academy of Sciences[KFJSTS-QYZD-174] |
WOS研究方向 | Engineering ; Geology |
语种 | 英语 |
WOS记录号 | WOS:000761873500001 |
出版者 | SPRINGER WIEN |
源URL | [http://119.78.100.198/handle/2S6PX9GI/34531] ![]() |
专题 | 中科院武汉岩土力学所 |
通讯作者 | Xu Jie |
作者单位 | 1.Qingdao Univ Technol, Coll Sci, Qingdao 266033, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Yalong River Hydropower Dev Co Ltd, Chengdu 610051, Sichuan, Peoples R China 4.Shenyang Univ Technol, Shenyang 110870, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang Chuanqing,Xu Jie,Jin Shengji,et al. Influence of Microroughness on Stick-Slip Characteristics of Fault Under Constant Normal Stiffness[J]. ROCK MECHANICS AND ROCK ENGINEERING,2022:18. |
APA | Zhang Chuanqing.,Xu Jie.,Jin Shengji.,Li Xiaoshun.,Cui Guojian.,...&Yan Shangyuan.(2022).Influence of Microroughness on Stick-Slip Characteristics of Fault Under Constant Normal Stiffness.ROCK MECHANICS AND ROCK ENGINEERING,18. |
MLA | Zhang Chuanqing,et al."Influence of Microroughness on Stick-Slip Characteristics of Fault Under Constant Normal Stiffness".ROCK MECHANICS AND ROCK ENGINEERING (2022):18. |
入库方式: OAI收割
来源:武汉岩土力学研究所
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