煤层破坏区工作面复采数值分析  

Analysis on Re-mining Values of Coal Mining Face in Seam Failure Zone

作　　者：邓保平[1] 王宏伟[2] 姜耀东[2,3] 刘帅[2] 王辰[2] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]中国矿业大学(北京)力学与建筑工程学院,北京100083 [3]煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《煤炭工程》2013年第7期72-75,共4页Coal Engineering

基　　金：国家重点基础研究发展规划(973)项目(2010CB226801);中国博士后科学基金资助(2011M500436);中国博士后科学基金第五批特别资助(2012T50161);国家自然科学基金项目(51174213);中央高校基本科研业务费专项资金资助(2010QL02)

摘　　要：汾西矿区范围内,由于小煤矿开采使用落后的以掘代采或房柱式采煤工艺,小煤矿无序开采所遗留破坏区范围较大,资源回采率极低,给生产带来了严重的安全隐患。文章以小煤窑破坏较为严重的新柳矿为工程背景,建立了交子里盘区南翼0902工作面地质模型,分析了小煤窑采用房柱式开采方式形成的应力场分布规律,在此基础上探讨了采用高档普采或综采等方法时工作面经过破坏区之前的应力变化规律。同时,研究了工作面过破坏区时的合理调斜角度。研究结果显示,工作面调斜过程中,运巷一侧要超前材巷一侧20m左右为宜,工作面的倾斜推进使得工作面前方煤柱交替进入应力集中。文中的研究对于煤炭资源整合及矿井安全开采具有科学意义和工程指导价值。Within Fenxi Mining Area, due to the coal mining method applied to the small mine was the backward excavating as a mining or the room and pillar coal mining technology, the small mine with the random mining left large areas of the seam failure zones, the resource mining rate of the small mines was ultra lower and the serious safety problems occurred to the mine production. Based on Xinliu Mine with the serious failures by the small mines as an engineering background, a geological model of No. 0902 coal mining face in the South Wing of Jiaozili Mining Block was established. The paper analyzed the distribution law of the stress fields formed by the room and pillar coal mining in the small mine. Based on the circumstances, the paper discussed the stress variation law of the failure zone before the coal mining face passed through when a high ranking conventional mining method or a fully mechanized coal mining method was applied. Meanwhile the paper studied the rational aligned inclination angle when the coal mining face passed through the failure zone. The results showed that during the inclination alignment process, the face end of the conveyor gateway should be about 20m in advance of the face end of the material transportation gateway and the inclined advancing forward of the coal mining face could make the coal pillars in front of the coal mining face alternatively in stress concentration. The study of the paper would have the scientific significanees and the engineering guidance value to the coal resource integration and the mine safety mining.

关 键 词：小煤矿 回采率 高档普采 综采 房柱式采煤工艺 

分 类 号：TD823.88[矿业工程—煤矿开采]