近距离煤层开采瓦斯综合治理研究

Comprehensive Gas Control in Close-distance Coal Seam Mining

原相煤矿是大埋深近距离煤层开采,且属于煤与瓦斯突出矿井,因此对该矿进行瓦斯突出防治研究具有很重要的意义。本文通过对原相煤矿的瓦斯地质条件及其来源等进行分析,针对该矿近距离煤层开采过程中存在的瓦斯超限问题,对10211工作面实行本煤层、裂隙带、采空区以及下邻近层等多种抽采方式相结合进行瓦斯抽采,以求达到综合治理瓦斯突出的目的。现场实践表明,瓦斯抽采后,本煤层无突出危险,瓦斯抽采率达到60%,取得了很好的消突效果和经济效益,对近距离煤层开采时瓦斯治理有一定的借鉴意义。

Yuanxiang Mine adopts large buried depth and close-distance coal seam mining. Due to coal and gas burst, control study is very important in the mine. The paper studies the gas geological condition and its sources. To solve the gas gauge in the mining, multiple methods were combined to extract gas from the No.10211 coal seam, fissure zone, goal, and its lower adjacent seam to achieve a comprehensive gas control. The practice did not show gas burst draining rate of 60%. The study achieved a better gas control effect useful for gas control in similar close-distance seam mining. danger after the extraction, with gas and economical benefit, which could be