丁集矿11-2煤层瓦斯赋存规律及瓦斯地质单元划分
发布时间：2018-11-06 12:50
【摘要】：为了揭示淮南煤田丁集矿11-2煤层瓦斯(煤层气)赋存分布规律,根据矿井地质构造分布特征,将其划分为6个瓦斯地质单元,运用瓦斯赋存构造逐级控制理论分析了各单元的瓦斯赋存特征。研究表明:不同形式的地质构造和煤层埋深是影响各单元瓦斯含量的主控因素;淮南煤田在早白垩纪中期至中新世早期遭受剥蚀,瓦斯大量解吸逸散,造成了矿井煤层瓦斯含量总体较低,分布不均衡性明显。认为丁集矿11-2煤层Ⅱ单元和Ⅴ单元是瓦斯抽采的有利区块。
[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，
本文编号：2314333
[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，
本文编号：2314333
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