永夏矿区构造特征及瓦斯赋存规律

Deposit regulation and geological characteristic of Yongxia mining area

为了探讨永夏矿区地质因素对瓦斯赋存及分布的影响,结合近年来对永夏矿区瓦斯地质规律及煤矿瓦斯地质图编制研究结果,分析了地质因素和瓦斯赋存分区、分带的密切关系,讨论构造、盖层性质、埋藏深度等对煤层瓦斯的赋存及分布的控制作用.划分了瓦斯地质单元,认为瓦斯地质单元Ⅰ为高瓦斯区、瓦斯地质单元Ⅱ为深部瓦斯富集区和瓦斯地质单元Ⅲ为低瓦斯区.

In order to discuss the gas occurrence and distribution influenced by geological factors in Yongxia mining area, based on the studied result of the gas geological principles and mining gas - geologic map of Yongxia mining area, the relationship between geological factors and mine gas division is analysed. The geological structure, properties of the cap rock and buried depth ect. controlling effect on the coal seam gas occurrence and distribution is discussed. The area can be divided into three gas geological units . It has been suggested that unit Ⅰ is the high gas -bearing area, unit Ⅱ is the deep gas enrichment area and unit Ⅲis the low gas area.