【摘要】：為了揭示淮南煤田丁集礦11-2煤層瓦斯(煤層氣)賦存分布規(guī)律,根據(jù)礦井地質(zhì)構(gòu)造分布特征,將其劃分為6個瓦斯地質(zhì)單元,運用瓦斯賦存構(gòu)造逐級控制理論分析了各單元的瓦斯賦存特征。研究表明:不同形式的地質(zhì)構(gòu)造和煤層埋深是影響各單元瓦斯含量的主控因素;淮南煤田在早白堊紀中期至中新世早期遭受剝蝕,瓦斯大量解吸逸散,造成了礦井煤層瓦斯含量總體較低,分布不均衡性明顯。認為丁集礦11-2煤層Ⅱ單元和Ⅴ單元是瓦斯抽采的有利區(qū)塊。
[Abstract]:In order to reveal the distribution law of methane (coalbed methane) in 11-2 coal seam of Dingji Mine, Huainan coalfield, according to the distribution characteristics of mine geological structure, it is divided into six gas geological units. The gas occurrence characteristics of each unit are analyzed by using the hierarchical control theory of gas occurrence structure. The results show that different types of geological structure and coal seam depth are the main controlling factors affecting the gas content of each unit. Huainan coalfield was denuded from the middle Cretaceous to the early Miocene, and the gas desorbed and dissipated greatly, which resulted in the low gas content in the coal seam and the obvious uneven distribution. It is considered that unit 鈪，

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