东峡煤矿大倾角煤层综放工作面顶煤放出特征研究  

Research on Top-coal Caving and Dropping of Coal Caving Face in Steeply Dipping Seam in Dongxia Coal Mine

作　　者：贠东风[1,2] 孟晓军[1] 程文东[1] 苏普正[1,2] 周翔 王东方 

机构地区：[1]西安科技大学能源学院,西安710054 [2]教育部西部矿井开采及灾害防治重点实验室,西安710054 [3]东峡煤矿,甘肃华亭744100

出　　处：《煤炭技术》2015年第3期9-11,共3页Coal Technology

摘　　要：针对华能华亭煤业集团有限责任公司东峡煤矿37220-2大倾角综放工作面,进行顶煤放出实验研究,分析了不同放煤顺序、放煤步距对放煤过程中冒落区煤矸的移动、放出率以及含矸率的影响。结果表明,考虑到东峡煤矿特厚煤层回采过程中的支架稳定性控制难题,现场宜采用两采一放,自上而下的放煤顺序,合理的放煤步距为1.2 m。Be aimed at the No.37220-2 fully mechanized coal caving face in steeply dipping seam of Dongxia coal mine, take the similar simulation experiment to study the characteristics of top-coal caving and dropping. The effects of different drawing interval and caving order on coal and debris flow,drawing and debris content ratio during caving are analyzed. The experiment results shows that two mining and one caving, from top to bottom is adopt on the basis of the problem of stability of supports during mining in thick coal seam of Dongxia coal mine,the reasonable drawing interval is 1.2 m.

关 键 词：大倾角 顶煤 放煤步距 含矸率 支架稳定 

分 类 号：TD823.21[矿业工程—煤矿开采]