Study on the early warning of cracking and water inrush risk of coal mine roof and floor

被引:0
|
作者
Zhang, Shichao [1 ,2 ]
Wei, Xiuqi [3 ]
Tang, Liming [4 ]
Duan, Wenshuo [5 ]
Gong, Bin [6 ]
Mu, Chaomin [1 ,7 ]
Zhang, Shujin [8 ]
机构
[1] Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei, Peoples R China
[2] Anhui Univ Sci & Technol, Sch Publ Safety & Emergency Management, Huainan, Peoples R China
[3] Anhui Zhibo Photoelect Technol Co Ltd, Hefei, Peoples R China
[4] Chengdu Univ Technol, Sch Environm & Civil Engn, Chengdu, Peoples R China
[5] Dalian Univ Technol, Sch Infrastruct Engn, Dalian, Peoples R China
[6] Brunel Univ London, Coll Engn Design & Phys Sci, Uxbridge, England
[7] Anhui Univ Sci & Technol, Sch Safety Sci & Engn, Huainan, Peoples R China
[8] Guizhou Mine Safety Sci Res Inst Co Ltd, Guiyang, Peoples R China
基金
中国国家自然科学基金;
关键词
coal mine; water inrush; early warning; microseismic monitoring; periodic pressure; CONSTRUCTION; MECHANISM; STRESS; MODEL;
D O I
10.3389/feart.2024.1436970
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Microseismic monitoring has proven to be an effective approach for detecting and preempting water inrush incidents within mining operations. However, challenges persist, particularly in terms of relying on a singular early warning index and the complexities involved in quantification. In response to these obstacles, a dedicated investigation was undertaken against the backdrop of mining activities at the 11,023 working face of Paner Coal Mine. Primarily, a novel methodology for categorizing the roof and floor into distinct zones was established based on the vertical distribution of microseismic events. Furthermore, this study delves into the dynamic evolution of key source parameters, such as microseismic energy, apparent stress, and apparent volume, amidst mining disturbances, enabling a comprehensive evaluation of the risk associated with roof and floor cracking, as well as potential water inrush incidents. A groundbreaking approach to early warning was proposed, operating on three pivotal dimensions: the depth of fractures, the intensity of fractures, and the likelihood of water inrush. Through rigorous validation during mining operations at the 11,023 working face, the efficacy was substantiated. Ultimately, the achievements offer invaluable insights and practical guidance for the advancement and implementation of water inrush early warning systems in coal mining contexts.
引用
收藏
页数:17
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