软岩煤层掘进工作面瓦斯抽放技术研究与应用

Research and Application of Gas Drainage Technology of Soft Rock Coal Seam Driving Face

瓦斯突出矿井软岩煤层巷道掘进过程中经常出现瓦斯突出现象,对煤矿安全生产产生重大威胁,不仅降低了工作面掘进效率,而且工作面瓦斯超限很容易引发重大煤矿安全事故。对此山西新元煤炭有限责任公司抽采一队通过分析研究,对3412进风巷掘进期间通过布置"迈步式"瓦斯抽放钻场进行瓦斯抽放,实践证明取得了显著成效。

In the course of roadway excavation of soft rock coal seam in gas outburst mine,tile outburst often occurs,which has a great threat to the safety production of coal mine,which not only reduces the tunneling efficiency of the working face,but also overlimits the working face gas,so it is easy to cause major coal mine safety accidents.Through analysis and research,the first team of coal extraction of Shanxi Xinyuan Coal Co.,LTD.conducted gas drainage through setting up ＂step＂ gas drainage drilling field during the excavation of the wind in 3412 tunnel,practice has proved that remarkable results have been achieved.