低透气性严重突出危险煤层瓦斯强化抽采设计

Strength pumping gas technology of sever outburst coal seam with low permeability

为了解决低透气性严重突出煤层的突出危险性问题,以沈煤集团红菱煤矿为例,对具有低透气性严重突出危险煤层的瓦斯抽采设计问题进行了相关探讨。通过对瓦斯实际抽采效果的考察结果的分析表明:南翼下三区-780 m水平南石门南12煤工作面所布置的瓦斯抽采巷道以及瓦斯强化抽采钻孔,很好地发挥了孔群的增透效应,所采用预抽煤层瓦斯措施可以有效降低煤层瓦斯含量,消除煤层的突出危险性。该成果对低透气性严重突出煤层的消突技术手段具有一定的参考价值和指导意义。

For solving the coal and gas outburst of coal seam with sever outburst risk and low permeability,the problem of gas extracting in coal mine with low gas permeability and severe outburst is discussed with taking Hongling coal mine of Shengyang.According the analysis of the actual extracting,the results show that extracting tunnel and reinforced drills at the working face on the-780 working level in the southern zone of Hongling coal mine well increase the permeability and reduce the gas concentration of the coal seam,the methods mentioned above could relief the outburst risk.The technology has a given reference value and guide meaning.