高瓦斯矿井分层开采工作面瓦斯综合治理技术

Technology of gas comprehensive control in high gassy stratified mining mine

为保证工作面安全回采,针对常村煤矿高瓦斯厚煤层分层开采工作面瓦斯治理难度大、制约工作面安全高效回采问题,根据上下分层工作面瓦斯涌出差异性及工作面实际开采情况,提出了上下分层工作面瓦斯综合治理措施,通过现场应用结果分析,采取瓦斯综合治理措施后,上下分层工作面回采期间瓦斯浓度均保持在0.3%以下,工作面回采期间未发生瓦斯超限事故。

In view of the difficulty of gas control in the stratified mining face of the high gassy thick coal seam in Changcun Mine,which restricted the safe and efficient mining of the working face,according to the difference of gas emission from the upper and lower layered working faces and the actual mining situation of the working face,the comprehensive gas control measures for the upper and lower layered working faces were proposed.Through the analysis of the field application results,after the comprehensive gas control measures were taken,the gas concentration of the upper and lower layered working faces during the mining period was kept below 0.3%,no gas overrun accident occurred during the mining of the working face.