孤岛工作面动力灾害预防控制方法研究  

Study on the Prevention and Control of Dynamic Disasters at an Isolated Island Working Face

作　　者：郝建[1,2] 徐明伟 吴文兵[2] 张志敏 程洪良 胡克峰 HAO Jian;XU Mingwei;WU Wenbing;ZHANG Zhimin;CHENG Hongliang;HU Kefeng(International Key Laboratory of Breeding Base for Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590 , Shandong, China;Shandong Huaining Mining Group Co. Ltd, Ningyang 271400 , Shandong, China)

机构地区：[1]山东科技大学矿山灾害预防控制国际重点实验室培育基地,山东青岛266590 [2]山东华宁矿业集团有限公司,山东宁阳271400

出　　处：《地震工程学报》2017年第5期976-980,共5页China Earthquake Engineering Journal

基　　金：国家自然科学基金(51604167);山东科技大学人才启动基金项目(2016RCJJ023)

摘　　要：为研究孤岛工作面安全开采方法,理论分析其动力灾害多发的岩层运动及应力条件,并提出其安全开采的准则。认为只要合理设计开采参数,就可以避免孤岛工作面动力灾害的发生。分析表明:孤岛工作面长度大于相邻工作面支承压力影响范围之和时,孤岛工作面支承压力无法叠加,工作面较安全;相邻工作面长度大于关键层断裂步距时,覆岩关键层可充分塌垮,孤岛工作面无动压冲击危险;在稳定的内应力场开掘回采巷道时,回采巷道无冲击危险。To study safe mining methods at an isolated island face,rock movement and stress conditions that could easily induce dynamic disasters under such conditions are analyzed theoretically,and criteria for safe mining in such locations are suggested.It was found that rational design of mining parameters can avoid dynamic disasters at isolated island faces.The results show that abutment pressure cannot be superposed and the working face is relatively safe if the length of the island face is rger than the sum of the abutment pressure ranges on adjacent faces.If the length of the adjacent face is larger than the fracture length of a key stratum,the overlying key stratum will fully collapse,and there will be no danger of dynamic pressure impact on the island face.Moreover,if a drifting roadway is located in a stable internal stress field,it has no danger of rock burst.

关 键 词：孤岛工作面 动力灾害 支承压力 关键层 内应力场 

分 类 号：TD324[矿业工程—矿井建设]