屯兰矿2~#煤层瓦斯地质特性及区域性防治措施研究

Study on gas geology characteristics and regional control measures of Tulan Mine No.2 coal seam

针对屯兰煤矿2~#煤层瓦斯涌出量和瓦斯压力大的问题,对2~#煤层瓦斯地质进行了分析研究,埋深和地质构造是影响瓦斯赋存的两个主要因素。从2~#煤层瓦斯地质宏观角度分析造成煤与瓦斯突出的主要原因是由地质构造引起的,利用屯兰煤矿自身地质情况,制定了煤层穿层瓦斯区域抽采技术的防治措施,使得瓦斯抽采率升高,瓦斯浓度降低,有效确保矿井安全高效生产。

Aiming at the problem of large amount of gas emission and pressure of Tulan Mine No. 2 coal seam, analysis on the gas geology of No. 2 coal seam indicated that burial depth and geological structure are two main factors affecting gas occurrence. Analysis from macroscopic perspective of coal seam gas geology verified that the main factor causing coal and gas outburst is geological structure. Considering the geological condition, borehole drilling extraction through coal seams in gas area was worked out and had increased gas drainage rate, reduced gas concentration and effectively guaranteed mine safety production.