LAPSE:2024.0257
Published Article
LAPSE:2024.0257
Microseismic Monitoring of the Fracture Nucleation Mechanism and Early Warning for Cavern Rock Masses
Jin-Shuai Zhao, Yue-Mao Zhao, Peng-Xiang Li, Chong-Feng Chen, Jian-Cong Zhang, Jiang-Hao Chen
February 19, 2024
The rock mass is susceptible to instability and damage during cavern construction. The blast-induced cracking process of the rock mass contains a wealth of information about the precursors of instability, and the identification of fracture nucleation signals is a prerequisite for effective hazard warning. A laboratory mechanical test and microseismic (MS) monitoring were carried out in the Baihetan Cavern to investigate the fracture nucleation process in the rock mass. MS monitoring shows that pre-existing microcracks were closed or new cracks were generated under the action of high stress, which caused the migration of microcracks. As the crack density increases, the fracture interaction gradually increases. The study of the rock fracture nucleation mechanism helps to reveal the MS sequences during the rock fracture process, and the fore-main shock was found in the MS sequence during access tunnel excavation. This study can effectively provide guidance for the early warning of rock mass failure and the stability analysis of underground caverns under blasting excavation disturbance.
Keywords
early warning, fracture nucleation, microseismic monitoring, stability analysis, underground cavern
Suggested Citation
Zhao JS, Zhao YM, Li PX, Chen CF, Zhang JC, Chen JH. Microseismic Monitoring of the Fracture Nucleation Mechanism and Early Warning for Cavern Rock Masses. (2024). LAPSE:2024.0257
Author Affiliations
Zhao JS: College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China; Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China
Zhao YM: College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Li PX: College of Urban Construction, Heze University, Heze 274015, China
Chen CF: Xi’an Research Institute, China Coal Technology and Engineering Group Corporation, Xi’an 710077, China
Zhang JC: PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China
Chen JH: Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China
Journal Name
Processes
Volume
11
Issue
9
First Page
2800
Year
2023
Publication Date
2023-09-20
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr11092800, Publication Type: Journal Article
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LAPSE:2024.0257
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doi:10.3390/pr11092800
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Feb 19, 2024
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CC BY 4.0
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[v1] (Original Submission)
Feb 19, 2024
 
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Feb 19, 2024
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Original Submitter
Calvin Tsay
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