余吾煤矿回采面采空区瓦斯涌出深度确定

在高瓦斯矿井的机械化开采过程中,瓦斯防治工作已成为矿井安全生产最难以逾越的一道屏障.随着余吾矿煤层开采深度的增加,矿井瓦斯涌出逐年增大,其中采空区瓦斯危害是目前煤矿的防治重点.以余吾矿北2202综采工作面的采空区为研究对象,通过对该工作面采空区瓦斯运移规律的分析,构建该试验矿井采空区瓦斯抽放模型,通过对比分析瓦斯运移规律的模拟结果,得出该综采工作面采空区主管埋管深度为150 m为最佳.

The Determined about Gas Emission Depth of Mining Face's Goaf at Yuwu Coal Mine

In the process of mechanization mining at high gas mine,the prevention and control of gas has become the most insuperable barrier to the safety of the coal mine.With the increase of mining depth about the mining coal seam in Yuwu mine,mine gas gushed out has been increasing year by year,and the goaf gas’s hazard is the key to control the gas.Through analysing the goaf gas migration rule of 2202 face,take 2202 face’s goaf of the northen in Yuwu mine as the research object,constructs gas drainage model to the goaf of the mine,through analyzing and comparing the results of gas migration rule,got the result which the best depth of buried pipe to drainage the gas at mined-out area is 150 m.