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基于矿井采掘煤样分析、实验测试数据、实际生产资料,对吕家坨矿瓦斯地质控制因素进行了相关分析,结果表明:吕家坨矿7、8、9、12_(-1)各煤层储存物性特征各有不同,12_(-1)煤层表现出了更好的瓦斯吸附性;研究区赋有较多大型张性断裂构造,且岩浆岩发育,致使煤层顶底板裂隙发育,煤层瓦斯整体含量较低;煤层顶底板含泥率较高、厚度发生急剧变化及经过小型张性断层发育区为瓦斯涌出量出现明显异常现象的直接因素。
Based on the analysis of coal mining samples, experimental test data and actual production data, the gas geological controlling factors of Lujiatuo Mine were analyzed. The results show that the coal seams of 7,8,9,12 _ (- 1) The physical characteristics of the coal seam are different. The coal seam of 12_ (- 1) shows better gas adsorption capacity. There are more large tension fracture structures in the study area, and the development of magmatic rocks leads to the development of roof and floor cracks in the coal seam. Low; the top and bottom of coal seam with high mud content, the thickness of the dramatic changes occur and through the small tension fault zone is the gas emission obvious abnormal phenomenon of direct factors.