Research on Gas Control Technology for Thin Coal Seams in Coal Mines
There is a problem of gas emission during the mining of the 14#coal seam in a certain coal mine.Based on the source and characteristics of gas,through ventilation design and gas drainage design,it is proposed to use pre mining and mid mining gas drainage methods to prevent and control gas problems during the mining process.The actual application results show that after using gas drainage,the average gas content in the coal body is 5.9 m3/t,and the average desorbable amount is about 1.3 m3/t,effectively reducing the amount of gas emission and gas content in the coal body during the mining process.
gas treatmentair volumehigh level drillingpre-pumping drilling
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