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瓦斯是地质成因的,瓦斯赋存和分布与成煤后期改造作用密切相关。以瓦斯地质理论为基础,运用构造演化理论,分析了大兴井田构造演化特征,研究了地质构造对煤层瓦斯赋存的控制规律。研究结果表明:井田后期的构造改造使得大多数断层经历了多期活动,对应不同的力学性质;局部构造应力场,以及断层和岩浆岩体侵扰破坏组合使煤层瓦斯赋存规律在纵、横向上的变化均较大。
Gas is a geological cause, and the occurrence and distribution of gas are closely related to the reformation in the later stage of coal formation. Based on the theory of gas geology and using tectonic evolution theory, the tectonic evolution characteristics of Daxing minefield are analyzed. The control laws of geological structure on gas occurrence of coal seam are studied. The results show that the structural alteration in the late Ida field has resulted in the fact that most of the faults experienced multiple periods of activity corresponding to different mechanical properties. The local tectonic stress field and the combination of faults and magmatic intrusive faults make the occurrence of gas in the coal seam vertically and horizontally The changes are larger.