The normal stiffness effect on fault slip mechanical behaviour characteristics
文献类型：期刊论文
| 作者 | Zhang, Luosong3,5; Zhang, Chuanqing3,5; Liu, Ning1; Fang, Zhi3,5; Zhou, Aoge2,3; Xie, Qiming3,5; Cui, Guojian4 |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2024-08-01 |
| 卷号 | 338页码:17 |
| 关键词 | CNS boundary conditions Granite friction test Normal stiffness effect Sliding mode of faults Seismic source parameters |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2024.107609 |
| 英文摘要 | The stress state of a fault plane influences the mode of sliding and characteristics of slide behaviour. Existing researchers have mainly focused on studying the effect of shear stiffness on fault behaviour under the constant normal load (CNL) boundary conditions. However, the impact of the normal stiffness effect of deep faults on fault sliding stability and seismic source parameters remains uncertain. Addressing the issue, this paper conducts friction tests on granite-simulated faults under the constant normal stiffness (CNS) boundary conditions. It analyzes the impact of normal stiffness on the mechanical behaviour of fault sliding. The results of this paper demonstrate the following findings: (1) Under both normal boundary conditions, various sliding modes occur, including creep-slip, chaotic stick-slip, regular inclusion chaotic stick-slip, and regular stick-slip. (2) The normal stiffness effect reduces the duration of creep-slip and chaotic stick-slip behaviour and decreases the frequency of regular inclusion chaotic stick-slip behaviour. (3) Shear stress and normal stress of the regular stick-slip mode exhibit periodic changes under the CNS boundary conditions. (4) Compared to the CNL boundary conditions, the CNS boundary conditions show a larger shear stress drop and a positive correlation between the normal stress drop and normal stiffness. (5) The CNS boundary conditions result in larger shear stiffness, the absolute value of stick-slip stiffness, characteristic sliding displacement, and fracture energy compared to the relevant seismic source parameters of the CNL boundary conditions. These parameters display positive correlations with normal stiffness. The stick-slip period and normal stiffness initially decrease and then increase, while the normal displacement drop and normal stiffness display a negative correlation trend. These analyses provide comprehensive insights into the mechanical characteristics of fault-slip behaviour and can contribute to improving models and predictions related to fault-sliding behaviour and seismic activity. |
| 资助项目 | National Natural Science Foundation of China[52109142] ; National Natural Science Founda- tion of China[52279116] ; Key Projects of the Yalong River Joint Fund of the National Natural Science Foundation of China[U1865203] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001261902800001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41822]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Chuanqing |
| 作者单位 | 1.PowerChina Huadong Engn Corp Ltd, Hangzhou 310014, Zhejiang, Peoples R China 2.Guilin Univ Technol, Sch Civil & Architectural Engn, Guilin 541004, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 4.Eastern Inst Adv Study, Coll Engn, Ningbo 315201, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Luosong,Zhang, Chuanqing,Liu, Ning,et al. The normal stiffness effect on fault slip mechanical behaviour characteristics[J]. ENGINEERING GEOLOGY,2024,338:17. |
| APA | Zhang, Luosong.,Zhang, Chuanqing.,Liu, Ning.,Fang, Zhi.,Zhou, Aoge.,...&Cui, Guojian.(2024).The normal stiffness effect on fault slip mechanical behaviour characteristics.ENGINEERING GEOLOGY,338,17. |
| MLA | Zhang, Luosong,et al."The normal stiffness effect on fault slip mechanical behaviour characteristics".ENGINEERING GEOLOGY 338(2024):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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