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Investigation on the failure mechanism of hard rock cavern subjected to adjacent structural plane based on physical model experiments

文献类型：期刊论文

作者Xu, Huaisheng1,2; Li, Shaojun1; Xu, Dingping1; Liu, Xiuyang1,2; Huang, Xiang3; Zheng, Minzong1; Zhang, Sheng1,2
刊名THEORETICAL AND APPLIED FRACTURE MECHANICS
出版日期2024-06-01
卷号131页码:14
关键词Structural plane Hard rock cavern Physical model experiments Acoustic emission (AE) Digital image correlation (DIC) PFC simulation
ISSN号0167-8442
DOI10.1016/j.tafmec.2024.104447
英文摘要Structural planes present significant safety challenges in the construction of deep hard rock caverns. However, the influence mechanism of a single dominant adjacent structural plane remains inadequately explored. This study conducted a series of physical model experiments with non-penetrating structural planes positioned adjacent to the cavern under uniaxial step compression, utilizing acoustic emission (AE) and digital image correlation (DIC) to monitor the failure process simultaneously. The results indicate that adjacent structural plane can mitigate stress-induced failure, reducing peak strength and elastic modulus by 10-42% and 13-31%, respectively. In the absence of a structural plane or a non-intersecting plane, stress-induced failure intensifies. Conversely, an intersecting plane contributes to greater crack stability. Precursor AE signals emerge earlier in the combination system. The intact cavern system shows an escalating tensile fracture ratio with loading, whereas the combination systems experience a diminishing tensile fracture ratio. Finally, particle flow code (PFC) simulation revealed that the presence of a single structural plane alters the cavern's force chains, influencing stress concentration position. This research reveals that the structural plane has the potential to alter the cavern failure mechanism, providing insights into the complex interaction between structural planes and caverns in deep engineering.
资助项目National Natural Science Foundation of China, China[51979268] ; National Natural Science Foundation of China, China[52279117] ; National Natural Science Foundation of China, China[42202320]
WOS研究方向Engineering ; Mechanics
语种英语
WOS记录号WOS:001238688000001
出版者ELSEVIER
源URL[http://119.78.100.198/handle/2S6PX9GI/41606]  
专题中科院武汉岩土力学所
通讯作者Xu, Dingping
作者单位1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Huaisheng,Li, Shaojun,Xu, Dingping,et al. Investigation on the failure mechanism of hard rock cavern subjected to adjacent structural plane based on physical model experiments[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2024,131:14.
APA Xu, Huaisheng.,Li, Shaojun.,Xu, Dingping.,Liu, Xiuyang.,Huang, Xiang.,...&Zhang, Sheng.(2024).Investigation on the failure mechanism of hard rock cavern subjected to adjacent structural plane based on physical model experiments.THEORETICAL AND APPLIED FRACTURE MECHANICS,131,14.
MLA Xu, Huaisheng,et al."Investigation on the failure mechanism of hard rock cavern subjected to adjacent structural plane based on physical model experiments".THEORETICAL AND APPLIED FRACTURE MECHANICS 131(2024):14.

入库方式： OAI收割

来源：武汉岩土力学研究所

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