突出煤层群矿井保护层和抽采巷层位优化分析

Optimization analysis of protective layer and gas extraction roadway layer of outburst coal seam group

为了优化新田煤矿近距离突出煤层群首采层和瓦斯抽采巷层位,基于新田煤矿已有地质资料,结合新田煤矿瓦斯治理技术,探讨了瓦斯抽采巷布置在1~#～12~#煤层之间不同方案的可行性;提出了4~#煤层、9~#煤层和10~#煤层软岩3种首采层方案,结合现有的开采水平,对比分析了3种方案的优缺点,确定了瓦斯抽采巷沿10~#煤层施工,对9~#煤层进行区域瓦斯治理,将9~#煤层作为首采层。

In order to optimize first mining seam and gas extraction roadway layer of close distance coal seam group of Xintian Coal Mine,based on the existing geological data and gas control technology of Xintian Coal Mine,the feasibilities of different layout schemes of gas extraction roadway between No.1coal seam and No.12coal seam were discussed,and three schemes of first mining seam in No.4coal seam,No.9coal seam and No.10coal seam were put forward.Combined with the existing mining technology,the merit and demerit of the three schemes were compared and analyzed,the gas extraction roadway was determined to arrange along the No.10coal seam and regional gas control work of No.9coal seam should be carried out,which was determined as the first mining seam.