影响鹤壁矿区二_1煤层瓦斯赋存及突出的地质因素分析

Analysis on Geological Factors Influencing Ⅱ_1 Coal Seam Methane Occurrence and Outburst at Hebi Mining Area

针对鹤壁矿区瓦斯地质条件,运用瓦斯地质理论,分析研究了影响矿区二1煤层瓦斯赋存及突出的主要地质因素。指出埋深增加导致二1煤层瓦斯压力、瓦斯含量增大,并对煤与瓦斯突出发生有重要影响;地质构造尤以断层对二1煤层走向瓦斯的赋存及分布起着区域性控制作用,是造成二1煤层瓦斯分布不均衡的主导因素。通过分析二1煤层瓦斯赋存及突出主要影响因素,可为矿区瓦斯灾害预测及防突技术选择提供基础和依据,有利于促进矿区安全生产。

Aimed at gas geological conditions at Hebi mining area, the paper analyzes main geological factors influencing Ⅱ1 coal seam gas occurrence and outburst through geological theory of gas. It indicates that increase in buried depth will cause the increase of gas pressure and gas content at Ⅱ1 coal seam, and will heavily influence coal and gas outburst. For geologic structure, especially the fault has a regional control on occurrence and distribution of gas along the Ⅱ1 coal seam, which is the leading factor causing unbalanced gas distribution of Ⅱ1 coal seam. It can provide foundation and basis for gas disaster prediction at the mining area and outburst prevention technique selection by analyzing main influencing factors for Ⅱ1 coal seam occurrence and outburst, which will promote safety production at the mining area.