伯方煤矿综采工作面瓦斯综合抽采技术

Gas Comprehensive Extraction Technology in Fully Mechanized Working Face of Bofang Coal Mine

为保证工作面瓦斯抽放效果满足其安全生产要求,分析伯方煤矿瓦斯地质情况,并提出本煤层顺层钻孔抽放、采空区高位钻孔抽放及上隅角抽放相结合的瓦斯抽放技术。针对上隅角埋管抽放效果不好的问题,提出插管抽放技术,上隅角瓦斯浓度由原来的0.6~0.8%降为0.4~0.5%。由对工作面采取综合抽放措施后的抽放效果可知:3205工作面评价单元内瓦斯抽采效果满足抽采达标要求,满足工作面安全生产的要求。

In order to ensure the working face gas drainage effect can satisfy the requirements of production safety,the paper fist makes an analysis of gas geological condition of Bofang Coal Mine,and puts forward such gas drainage technology as the coal mined-out area high bedding drilling drainage,high drilling drainage and drainage in upper corner etc.In view of the problem of poor drainage in upper corner,the technique of tube drainage was put forward,and the gas concentration in the upper corner was reduced from 0.6%to 0.8%to 0.4%to 0.5%.Based on the drainage effect after comprehensive drainage measures is used,we known effect of gas extraction in 3205 working face of evaluation units can meet the standard requirements,satisfying the requirements of the safety production of working face.