马兰矿10610工作面大直径钻孔瓦斯抽采技术研究及应用

Research and Application of Large Diameter Borehole Gas Drainage Technology in 10610 Working Face of Malan Coal Mine

为对马兰矿10610工作面的瓦斯进行有效治理,提出采用大直径钻孔的方式对工作面采空区瓦斯进行抽采,根据工作面的具体情况对大直径抽采钻孔的各项参数进行具体设计,实施后对抽采效果进行监测分析。结果表明:大直径钻孔瓦斯抽采技术实施后,抽采效果良好,上隅角瓦斯含量稳定在0.3%~0.8%,为工作面的安全回采提供了保障。

In order to effectively control gas in 10610 working face of Malan Coal Mine, the method of large diameter borehole is put forward to extract gas in goaf of working face. According to the specific conditions of working face, the parameters of large diameter borehole are designed, and the effect of gas extraction is monitored and analyzed after implementation.The results show that the gas extraction technology with large diameter drilling gas has a good extraction effect, and the gas content of the upper corner is stable at 0.3 % to 0.8 % in the publication, which provides a guarantee for the safe recovery of the working surface.