Fault-Induced Coal Burst Mechanism under Mining-Induced Static and Dynamic Stresses

作     者：Wu Cai Linming Dou Guangyao Si Yawei Hu Wu Cai;Linming Dou;Guangyao Si;Yawei Hu

作者机构：State Key Laboratory of Coal Resources and Safe MiningSchool of MinesChina University of Mining and TechnologyXuzhou 221116China Department of Earth Science and EngineeringRoyal School of MinesImperial College LondonLondon SW72AZUK School of Minerals and Energy Resources EngineeringUniversity of New South WalesSydneyNSW 2052Australia 

出 版 物：《Engineering》 (工程（英文）)

年 卷 期：2021年第7卷第5期

页      面：687-700页

核心收录：

学科分类：0810[工学-信息与通信工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081901[工学-采矿工程] 0808[工学-电气工程] 0819[工学-矿业工程] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：This research was carried out by the following funded projects:National Natural Science Foundation of China(51604270,51874292,and 51804303) Fundamental Research Funds for the Central Universities(2017QNA26) Natural Science Foundation of Jiangsu Province(BK20180643) Independent Research Projects of State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology(SKLCRSM15X04) The first author also acknowledges the China Postdoctoral Council International Postdoctoral Exchange Fellowship Program(20170060) 

主　　题：Coal burst Fault reactivation Mining-induced stress Seismic-based dynamic stress Fault pillar 

摘      要：Fault is a common geological structure that has been revealed in the process of underground coal excavation and *** nature of its discontinuous structure controls the deformation,damage,and mechanics of the coal or rock *** interaction between this discontinuous structure and mining activities is a key factor that dominates fault reactivation and the coal burst it can *** paper first summarizes investigations into the relationships between coal mining layouts and fault occurrences,along with relevant conceptual models for fault ***,it proposes mechanisms of fault reactivation and its induced coal burst based on the superposition of static and dynamic stresses,which include two kinds of fault reactivations from:mining-induced quasi-static stress(FRMSS)-dominated and seismic-based dynamic stress(FRSDS)-*** two kinds of fault reactivations are then validated by the results of experimental investigations,numerical modeling,and in situ microseismic *** this basis,monitoring methods and prevention strategies for fault-induced coal burst are discussed and *** results show that fault-induced coal burst is triggered by the superposition of high static stress in the fault pillar and dynamic stress from fault *** static stress comes from the interaction of the fault and the roof structure,and dynamic stress can be ascribed to FRMSS and *** results in this paper could be of great significance in guiding the monitoring and prevention of fault-induced coal bursts.