保德煤矿预抽瓦斯巷道布置最佳方案确定

Determination of the Best Scheme for Pre-draining Gas Roadway in Baode Coal Mine

针对保德煤矿8~#煤层深部区域瓦斯压力大、含量高等问题,提出实施预抽瓦斯巷道提前布置预抽钻孔进行瓦斯抽采技术。根据保德煤矿采掘部署情况,提出底板巷、地面钻孔及区段煤巷等3种预抽瓦斯巷道布置方案。通过对3种方案的经济和技术比较,结果表明,采用区段煤巷布置方案无论在经济上还是技术上都较底板巷和地面钻孔合理,且符合保德煤矿实际现状。

In order to solve the problem of large gas pressure and high content in the deep region of No.8 coal seam in Baode coal mine,it is proposed that pre-draining gas pre-drainage holes be arranged in advance for gas drainage technology.According to the mining and deployment of the Baode coal mine,three types of pre-pumped gas roadway layout schemes were proposed,including floor tunnel,ground drilling,and coal roadway.Through the economic and technical comparison of the three schemes,the results show that the use of the coal roadway layout scheme is reasonable both in terms of economy and technology compared to the floor and the ground,and is in line with the actual status of the Baode coal mine.