高瓦斯突出矿井综采工作面瓦斯综合防治技术

为了控制高瓦斯突出矿井屯兰矿18205综采工作面的瓦斯,以Y型通风系统为基础,底板瓦斯抽采巷瓦斯抽采为主体,配以本煤层顺层瓦斯抽采、上邻近层瓦斯抽采和沿空留巷隔离墙埋管瓦斯抽采等方法进行现场试验。采用上述治理措施后瓦斯抽采率达70%以上,工作面风排瓦斯量仅为5. 93 m3/ min,相对瓦斯涌出量4. 51 m3/ t,分别下降76% 4%和70. 7%,矿井瓦斯治理能力得到了总体提升。

Comprehensive Gas Prevention and Control Technology of Fully Mechanized Coal Mining Face in High Gassy and Outburst Mine

In order to control the gas content of No.18205 fully mechanized coal mining face in Tunlan Mine which is a high gassy outburst mine,based on the Y type ventilation system,a site experiment was conducted mainly on the gas drainage with the floor gas drainage gateway and secondary on the gas drainage with the boreholes along the mining seam,the gas drainage in top neighbour seam and the gas drainage with pipe buried in isolation wall of the gateway retained along goaf.When above gas measures applied,the gas drainage rate reached over 70%,the ventilation discharged gas value in the coal mining face was only 5.93 m3/min,the relative gas emission value was 4.51 m3/t,and the values individually reduced by 76.4% and 70.7%.Thus the mine gas control capacity was generally improved.