麻家梁矿回采工作面邻巷瓦斯驱替技术应用

Application of Gas Displacement Technology in Adjacent roadway of Majialiang Mining Fac

瓦斯积聚会导致爆炸、扩散、突出、人员缺氧窒息甚至死亡。针对晋能控股煤业集团浙能麻家梁煤业有限责任公司回采辅运巷相邻废巷瓦斯积聚威胁,通过在适当的位置钻孔注氮,成功将相邻废巷内积聚的瓦斯置换出来,将采空区内瓦斯浓度从最高5.85%下降至0.75%,同时也使废巷内O2浓度降低到3%以下,有效地防治瓦斯积聚的同时也抑制了废巷内煤自燃。

Gas accumulation can lead to explosion,diffusion,outburst,anoxic suffocation,and even death.Aiming at the threat of gas accumulation in adjacent waste roadway of auxiliary mining roadway of Jinneng Holding Coal Industry Group Majioliang Co.,LTD.,we successfully replaced the gas accumulated in adjacent waste roadway by injecting nitrogen through boreholes at appropriate locations,which reduced the concentration of gas in the goaf from the highest 5.85%to 0.75%,and also reduced the concentration of 02 in the waste roadway to less than 3%.It can effectively prevent gas accumulation and restrain coal spontaneous combustion in waste roadway.