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Pertinence Study on the Permeability and Mining - induced Stress of Coal Mass

C. Q. Zhu, n hui Province Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan, Anhui 232001, China, G. X. Xie, L. Wang, H. F. Ma, C. M. Li, C. Wang, School of Resource and Safety Engineering, Anhui University of Science and Techn ology, Huainan, Anhui 232001, China, n hui Province Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan, Anhui 232001, China, School of Resource and Safety Engineering, Anhui University of Science and Techn ology, Huainan, Anhui 232001, China, n hui Province Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan, Anhui 232001, China, School of Resource and Safety Engineering, Anhui University of Science and Techn ology, Huainan, Anhui 232001, China (+5 others)
2016 Journal of Engineering Science and Technology Review  

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Gas extraction is an effective measure for reducing gas accidents in the colliery; however, extracting gas in coal with low permeability is difficult. To obtain the influential law of mining-induced stress on the permeability of coal and improve the effect of gas extraction, this study took the 17218 face of Zhangji Coal Mine under Huainan Mine Industry Group as the engineering background to set the measurement station at both the return airway and haulage roadway of the face, establish the
more » ... 3D numerical calculation model, and comprehensively analyze the evolution laws of mining-induced stress, gas flow, gas extraction amount, and coal mass failure characteristic during the actual mining process at the face. Research results showed that during the actual mining process at the face, gas flow and mining-induced stress showed the same changing law, and the permeability of coal mass was controlled by mining-induced stress. The peak of coal stress at the side of the return airway, the degree of stress concentration, and its scope of influence were all large. The coal failure scope and degree at the side of the return airway were all large and the permeability of coal mass was high. The permeability of coal mass in the zone in which the stress was reduced at the face was the highest. The gas concentration could be significantly reduced if on-site technicians extract the gas in the stress reduction zone. The research findings enrich the theoretical research on coal permeability and provide the basis for effective gas extraction.
doi:10.25103/jestr.095.08 fatcat:i2cj5gbjc5galbwj5cbfca3nry
DOAJ
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C. Q. Zhu, n hui Province Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan, Anhui 232001, China, G. X. Xie, L. Wang, H. F. Ma, C. M. Li, C. Wang, School of Resource and Safety Engineering, Anhui University of Science and Techn ology, Huainan, Anhui 232001, China, n hui Province Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan, Anhui 232001, China, School of Resource and Safety Engineering, Anhui University of Science and Techn ology, Huainan, Anhui 232001, China, n hui Province Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan, Anhui 232001, China, School of Resource and Safety Engineering, Anhui University of Science and Techn ology, Huainan, Anhui 232001, China, n hui Province Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan, Anhui 232001, China, School of Resource and Safety Engineering, Anhui University of Science and Techn ology, Huainan, Anhui 232001, China, n hui Province Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan, Anhui 232001, China, School of Resource and Safety Engineering, Anhui University of Science and Techn ology, Huainan, Anhui 232001, China, Graduate School of Engineering, Nagasaki University, Nagasaki, 852 - 8521, Japan. "Pertinence Study on the Permeability and Mining - induced Stress of Coal Mass." Journal of Engineering Science and Technology Review 9.5 (2016) 61-67