Coal and rock dynamic disaster prevention and control technology in the large mining face of a deep outburst mine

作     者：Jianguo ZHANG Man WANG Hongwei ZHOU Dongming ZHANG Beichen YU Chongyang WANG Yujie WANG Jianguo ZHANG;Man WANG;Hongwei ZHOU;Dongming ZHANG;Beichen YU;Chongyang WANG;Yujie WANG

作者机构：State Key Laboratory of Coking Coal Exploitation and Comprehensive UtilizationChina Pingmei Shenma Holding Group CO.LTDPingdingshan 467000China State Key Laboratory of Coal Mine Disaster Dynamics and ControlChongqing UniversityChongqing 400030China School of Resources and Safety EngineeringChongqing UniversityChongqing 400030China School of Energy and Mining EngineeringChina University of Mining and Technology(Beijing)Beijing 100083China 

出 版 物：《Frontiers of Earth Science》 (地球科学前沿（英文版）)

年 卷 期：2023年第17卷第3期

页      面：701-712页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 

基　　金：the National Natural Science Foundation of China(Grant No.51874053) the Scientific Research Foundation of State Key Laboratory of Coal Mine Disaster Dynamics and Control(No.2011DA105287-zd201804) 

主　　题：in-situ stress dynamic disaster critical criterion gas drainage 

摘      要：In this study, we systematically studied the occurrence regularity of in situ stress in the Pingdingshan mine. The critical criterion model of coal-rock destabilization was established based on the theoretical framework of fracture mechanics. Furthermore, we analyzed the coupling destabilization mechanism of in situ stress and gas and studied the influence of the variation between original rock stress and mining-induced stress on the critical criterion. Through field experiments and applications, we established a three-dimensional gas drainage technology system for areas with a large mining height and long work face. Based on our research, a demonstration project was developed for deep mine dynamic disaster control. The technical system included the arrangement and optimization of pre-drainage holes along the coal seam, technology, and optimization of gas drainage through the bottom drainage tunnel and upper corner, gas drainage technology through sieve tubes, and a two plugging with one injection under pressure sealing technology. The implementation of the demonstration project effectively reduced the gas content and pressure of the coal seam in the deep mine, and the project increased the critical strength of the instability and failure of coal and rock.