高瓦斯矿井裂隙带瓦斯抽采参数研究与实践

Research and Practice of Gas Leakage Parameters in Cracked Zones of High Gassy Mines

针对山西某高瓦斯矿井目前瓦斯抽采难度大、效果差等情况,对3#煤层工作面裂隙带瓦斯抽采参数进行了优化研究与实践。由实践效果可知钻孔内的瓦斯浓度有所上升,平均基本接近56%,最高达到65%,工作面瓦斯在上隅角的聚集浓度有所下降,不到0.4%,降低了工作面的瓦斯涌出量,保障了工作面安全生产。

According to the difficulty of gas extraction in a high gassy coal mine in Shanxi Province,and the poor effect,the research and practice of the gas extraction parameters in cracked zone of 3#coal seam face have been optimized.The practical effect shows that the gas concentration in the borehole has increased,and the average value is basically close to 56%,and the highest is 65%.The concentration of gas in the working face at the shangjiao angle has decreased to less than 0.4%,which reduces the gas in the working face.The amount of gushing out ensures the safe production of the working face.