Distribution Law of In Situ Stress and Its Engineering Application in Rock Burst Control in Juye Mining Area

Guangchao Zhang, You Li, Xiangjun Meng, Guangzhe Tao, Lei Wang, Hanqing Guo, Chuanqi Zhu, Hao Zuo and Zhi Qu
Additional contact information
Guangchao Zhang: College of Energy and Mining Engineering, Shandong University of Science & Technology, Qingdao 266590, China
You Li: College of Energy and Mining Engineering, Shandong University of Science & Technology, Qingdao 266590, China
Xiangjun Meng: College of Energy and Mining Engineering, Shandong University of Science & Technology, Qingdao 266590, China
Guangzhe Tao: College of Energy and Mining Engineering, Shandong University of Science & Technology, Qingdao 266590, China
Lei Wang: State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Huainan 232001, China
Hanqing Guo: Shandong Energy Group Co., Ltd., Jinan 250014, China
Chuanqi Zhu: State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Huainan 232001, China
Hao Zuo: College of Energy and Mining Engineering, Shandong University of Science & Technology, Qingdao 266590, China
Zhi Qu: College of Energy and Mining Engineering, Shandong University of Science & Technology, Qingdao 266590, China

Energies, 2022, vol. 15, issue 4, 1-17

Abstract: This paper presents an integrated approach for mathematical statistics, theoretical analysis, and a field test to investigate the distribution law of in-situ stress and its engineering practice of rock burst control. The test site is located in the Juye mining area, Shandong Province, China. The main conclusions included: (1) There are two types of in-situ stress states in the Juye mining area, σ H > σ V > σ h (42.42%) and σ H > σ h > σ V (57.57%), which are mainly caused by the tectonic stress of the Heze and Fushan faults (The σ H , σ V, and σ h is the maximum principal stress, vertical principal stress or intermediate principal stress and minimum principal stress respectively). (2) The lateral pressure coefficients K H , K h , and K av show a non-linear distribution with increased depth, approaching 1.32, 0.96, and 1.41, respectively. The variation range of the horizontal difference stress μ d is 0.09–0.58. (3) The average value of the stress gradient is 3.05 MPa/100 m, and the main directions of the maximum horizontal principal stress are northeast–southwest, and northwest–southeast. (4) A new combined supporting strategy, incorporating optimization of roadway layout, anti-impact support system design, and local reasonable pressure relief, was proposed for the rock burst control, and its validity was verified via field monitoring. All these design principles and support strategies for the rock burst control presented in this study can potentially be applied to other similar projects.

Keywords: coal resources; coal mining; coal roadway support; Juye mining area; in-situ stress; rock burst; mining layout; high static stress; anti-impact support (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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