多层叠置含煤系统煤层瓦斯赋存规律及影响因素分析
Analysis on Gas Occurrence Law and Influencing Factors of Coal Seam in Multi-Layer Stacked Coal Containing System
张孟江 1周泽2
作者信息
- 1. 中国矿业大学,江苏 徐州 221008;贵州省煤田地质局地质勘察研究院,贵州 贵阳 550008
- 2. 贵州省煤田地质局,贵州 贵阳 550025;贵州优驰能源科技有限责任公司,贵州 贵阳 550014;贵州省煤炭流态化开采重点实验室,贵州 贵阳 550014
- 折叠
摘要
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 700 m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.
Abstract
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.
关键词
主采煤层/瓦斯含量/瓦斯分带/多层叠置/含气系统Key words
main mining coal seam/gas content/gas zoning/multi-layer stacking/gas containing system引用本文复制引用
基金项目
贵州省科技重大成果转化项目(黔科合成果[2022]重点001号)
出版年
2024
国家科技期刊平台
NSTL
万方数据