高瓦斯矿井两层煤同时开采瓦斯抽采方案设计

Gas drainage scheme design for simultaneous mining of two coal seams in high gas mine

为解决高瓦斯中近距离煤层群安全开采问题,针对阳泉大贤煤矿9号与15号煤层开采条件及瓦斯赋存特征,根据矿井瓦斯涌出量构成关系,对两层煤同时开采瓦斯抽采可行性进行分析,设计了瓦斯抽采方案,并研究确定了工作面瓦斯抽采巷道布置、抽采钻孔技术参数及采空区瓦斯抽采参数,可为类似低渗透性煤层瓦斯的治理提供很好的借鉴。

In order to ensure the safe mining in high gas middle-close coal seams group,aiming at the mining conditions and gas occurrence characteristics in Yangquan No. 9 and No. 15 coal seam,the feasibility of two- seam simultaneous mining was analyzed according to the constitution relation of gas emission,the gas drainage scheme was designed,and the gas drainage roadway layout, drilling technical parameters and goaf gas drainage scheme were confirm. The project obtained favorable effect,and offered references for gas control in similar low-permeability coal seam.