煤与瓦斯突出矿井取消瓦斯尾巷应用研究

Research on Application of Abolishing of Gas Tail Roadway in Coal and Gas Outburst Coal Mine

为了确保矿井安全生产,保安煤矿通过采用工作面调节配风、施工穿层钻孔、采空区埋管抽采、优化抽采系统等措施取消了15107工作面的专用瓦斯尾巷。尾巷取消后,采煤工作面上隅角及回风顺槽处的瓦斯浓度均有大幅降低,15107回风顺槽最大瓦斯浓度为取消前的56.7%;正常生产期间上隅角瓦斯浓度为取消前的19.4%;瓦斯抽采巷内最大瓦斯浓度为取消前的82.1%,确保了工作面的安全高效回采。

In order to ensure the safe production of the mine,the Baoan coal mine eliminated the special gas drainage way at the 15107 working face by adopting measures such as adjustment of working face and air distribution,construction cross measurement drilling,burried pipe inside the goaf,and optimization of the extraction system.The practice makes the gas concentration in the upper corners of the coal mining face and the return air reduced greatly.The maximum gas concentration of the 15107 return air reduced by 43.3%,the upper corner gas concentration reduced by 80.6%,the maximum gas concentration in the gas drainage way reduced by17.9%,safe and efficient mining of the working face guaranteed.