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根据以往资料和实验测试结果,研究了龙湾井田3#煤层瓦斯含量分布特征,采用定性与定量相结合的方式,对煤层瓦斯含量的分布规律及控制因素进行了探讨。研究认为:区域构造演化是控制本区煤层瓦斯赋存的重要因素,煤层顶、底板岩性为煤层瓦斯提供了良好的保存条件,而埋藏深度对本区的瓦斯赋存具有重要的控制作用。在研究区范围内,随着煤层埋藏深度的增加,瓦斯含量随之增大,二者之间具有线性正相关关系;向斜轴部瓦斯含量高于两翼,而背斜则呈现相反的趋势。
Based on the previous data and experimental results, the gas distribution of No.3 coal seam in Longwan Minefield was studied. The gas content distribution and control factors of the coal seam were discussed by qualitative and quantitative methods. The study shows that regional tectonic evolution is an important factor in controlling gas occurrence in the coal seams in this area. The top and bottom rock seams of coal seam provide favorable conditions for the coal seam gas, and the burial depth plays an important role in controlling gas occurrence in this area. Within the study area, the gas content increases with the increase of the buried depth of the coal seam, and there is a linear positive correlation between the two. The gas content of the syncline axis is higher than that of the two wings while the anticline shows the opposite trend.