Jizhong Energy Fengfeng Group Handan Baofeng Mining Industry Co., Ltd.

针对突出煤层分叉区域工作面开采过程中2下煤层卸压瓦斯大量涌出、上隅角瓦斯治理困难等问题,采取在上顺槽施工底板定向长钻孔、下顺槽施工拦截钻孔截流抽采相结合瓦斯治理技术,研究底板拦截钻孔布孔方式、层位及抽采范围,显著提高拦截钻孔的成孔率和抽采效果,实现了瓦斯零超限。

In view of the problems of a large amount of gas gushing out in the 2lower coal seam pressure relief during the mining process in the forked area working face of the protruding coal seam, as well as the difficulty in administering gas in the upper corner, a combination gas administer technology of bottom plate directional long drilling holes in the upper groove construction and interception drilling holes for interception and drainage in the lower groove construction is adopted. The holes layout mode, layer, and drainage range of the interception drilling holes in the bottom plate are studied, significantly improving the hole formation rate and drainage effect of the interception drilling holes, and achieving zero gas exceeding limit.

1 工作面瓦斯涌出来源及预测分析
1.1 本煤层瓦斯涌出量
1.2 邻近煤层瓦斯涌出量
2 上顺槽底板定向长钻孔瓦斯抽采技术
2.1 定向底板长钻孔抽采技术应用原理
2.2 定向底板长钻孔抽采技术试验
2.3 定向底板长钻孔瓦斯抽采效果
3 下顺槽拦截钻孔瓦斯抽采技术
3.1 下顺槽拦截抽采技术应用原理
3.2 下顺槽钻孔抽采技术试验
3.3 下顺槽拦截钻孔瓦斯抽采技术应用效果
4 瓦斯治理效果
5 结论

代精宇.底板钻孔截流抽采技术在分叉煤层瓦斯治理中的应用[J].山东煤炭科技,2023,41(06):104-106+112.