山区采煤覆岩导水断裂带发育高度研究  

Research on Development Height of Water Flowing Fractured Zone in Overlying Strata for Coal Mining in Mountain Area

作　　者：杨琪[1] 李小琴[1] 李文平[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221008

出　　处：《煤矿安全》2016年第12期31-34,共4页Safety in Coal Mines

基　　金：国家自然科学基金重点资助项目(41430643);国家重点基础研究发展计划(973计划)资助项目(2015CB251601);江苏高校优势学科建设工程资助项目

摘　　要：以青龙煤矿为试验矿井,结合导水断裂带发育高度现场实测资料,运用相似材料模拟与数值模拟相结合的方法,研究了岩溶山区采场覆岩变形破坏规律及导水断裂带高度发育情况。研究结果表明：青龙煤矿煤层开采顶板导水断裂带发育高度为42-46 m;随着工作面的推进,导水断裂带发育高度逐渐增加,最终达到稳定;开采过程中,工作面前后方煤壁处出现应力集中;上覆岩层在工作面推进结束后最终破坏形态为＂马鞍形＂。Taking Qinglong Mine as the experimental object,combining with the field actual measurement of development height of water flowing fractured zone,two methods including the similar material simulation and numerical simulation are used. The research results show that the developing height of water flowing fractured zone of the overburden rock in Qinglong Coal Mine is from 42 m to 46m; along with the advance of the working surface,the development height of the water flowing fractured zone gradually increased,and finally reached the stability; during the mining process,the wall of coal on the front and behind of working face appeared the phenomenon of stress concentration; the final failure shape of the overlying strata is the ＂ saddle＂ at the end of the working face.

关 键 词：岩溶山区 导水断裂带 相似材料模拟 数值模拟 发育高度 

分 类 号：TD741[矿业工程—矿井通风与安全]