China University of Mining and Technology
Geological Survey and Research Institute of Guizhou Province Coalfield Geological Bureau
Guizhou Province Coalfield Geological Bureau
Guizhou Youchi Energy Science and Technology Co., Ltd.
Key Laboratory of Coal Fluidization Mining in Guizhou Province

基于煤层瓦斯地质理论,通过大量的煤田勘探采样数据分析,研究总结陈家沟煤矿瓦斯赋存规律及其影响因素。矿区煤层瓦斯赋存主要受地质、构造、煤岩特征、顶底板岩性、埋藏深度等的影响。陈家沟煤矿属高瓦斯矿井,瓦斯分带以CH4带为主;瓦斯含量随着煤层的埋藏深度增加而有增大趋势,埋深达到700m左右时,瓦斯含量达到最高;区内可分为三个独立含气系统,分别为C1~C12、C14~C26、C31~C69含气系统。经过研究分析,今后在矿井开发中应考虑相应合层排采独立开发。

Based on the geological theory of coal seam gas, through the analysis of a large amount of coalfield exploration sampling data, the gas occurrence law and its influencing factors in Chenjiagou Coal Mine are studied and summarized. The occurrence of coalbed methane in mining areas is mainly influenced by geology, structure, coal rock characteristics, roof and floor lithology, burial depth, and other factors. Chenjiagou Coal Mine is a high gas mine, with CH4 zone being the main gas zone; the gas content tends to increase with the burial depth of the coal seam, and reaches its maximum when the burial depth reaches around 700 m; the area can be divided into three independent gas containing systems, namely C1-C12, C14-C26, and C31-C69 gas containing systems. After research and analysis, independent development of corresponding laminated layer drainage and mining should be considered in mine development in the future.