大分段小间隔多轮间隔放煤法在坚硬特厚煤层工作面的应用  

Application of Large Sublevel and Small Interval Multi-wheel Interval Caving Method in Hard and Extra-thick Coal Seam

作　　者：杜谦 Du Qian(Jinneng Holding Coal Industry Group Madaotou Coal Industry Co.,Ltd.,Shanxi Datong 037000)

机构地区：[1]晋能控股煤业集团马道头煤业有限公司,山西大同037000

出　　处：《山东煤炭科技》2022年第4期206-208,共3页Shandong Coal Science and Technology

摘　　要：合理的放顶煤参数是坚硬特厚煤层高效开采的前提,以马道头煤矿8404工作面为研究背景,采用理论分析计算的方法对坚硬特厚煤层放顶煤工艺参数展开研究。研究结果表明:8404工作面采用大分段小间隔放煤法可有效提高回采率,工作面回采率提高至92%。Reasonable top coal caving parameters are the premise of efficient mining in hard and extra-thick coal seams.Taking the 8404 working face of Madaotou Coal Mine as the research background,the technological parameters of top coal caving in hard extra-thick coal seams are studied by the method of theoretical analysis and calculation.The research results show that the coal drawing method with large sublevel and small interval in the 8404 working face can effectively improve the recovery rate,and the recovery rate of working face can be increased to 92%.

关 键 词：坚硬 特厚 放顶煤 参数 

分 类 号：TD823.49[矿业工程—煤矿开采]