高抽巷布置方式对采空区瓦斯抽采效果影响研究

针对镇城底矿1301采煤工作面回采过程中瓦斯涌出量较大、回风隅角瓦斯浓度时有超标的问题,对瓦斯高抽巷布置方式进行了详细分析,确定了倾向高抽巷的布置方式。通过对瓦斯高抽巷与工作面不同距离情况下瓦斯抽采效果以及回风隅角瓦斯浓度的对比分析,发现倾向高抽巷与工作面的距离为144m时,瓦斯抽采效果最好,可有效解决工作面瓦斯浓度超标问题。

Research on the influence of high drainage roadway layout on the gas drainage effect in goaf

Aiming at the problems of large gas emission and excessive gas concentration in the return air corner during the mining process at the 1301 working face of Zhenchengdi Mine,detailed analysis of the layout of the gas high-drainage roadway was carried out,and the high-drainage roadway was determined.Through the comparative analysis of the gas drainage effect and the gas concentration of the return air corner under the different distances between the high gas drainage roadway and the working face,it was found that when the distance between the high gas drainage roadway and the working face was 144 m,the gas drainage effect was the best.It could effectively solve the problem of excessive gas concentration in the working face.