乡镇煤矿回采工作面局部瓦斯治理简易方法

Introduction about the Simple Control Measure of Partial Gas Treatment in the Mine Working Face of Township Coal Mine

根据工作面上隅角采空区气体与回采工作面回风风流这两个区域两种气体不同组份、不同温度导致密度差形成工作面回风流和采空区抽放管内到地面空气柱压差,使用专用管道排放采空区瓦斯达到治理回采工作面上隅角局部瓦斯。

With the increase of mining scale,mining intensity,and mining depth of town coal mines,and the spreading application of walltype coalmining approach,the problem of gas exceeding the limit at the solid angle on the coal extraction working face is becoming daily prominent.Owing to the serious lag behind of safety management of town coal mines and the instability of power supply system,the superiority of the advanced gas treatment method by making use of drainage pump to suck out gas does not work very well.Therefore,the writer according to the air stream regulation on the working face top corner and the goaf,make use of the admixture air of the different formation and temperature on the goaf and the working face waste gas,which induce the density difference from the goaf and the working face waste gas to ground and lead air pillar pressure difference,and control the gas of the mine working face top corner with using special pipeline to let the goaf gas.