焦作五里源勘查区二_1煤层瓦斯赋存特征分析  

Analysis of Coal Ⅱ_1 Gas Hosting Features in Wuliyuan Exploration Area, Jiaozuo

作　　者：聂怀耀[1] 卫健征 孔令菲[1] 赵琳颖 

机构地区：[1]河南省地质矿产勘查开发局第二地质矿产调查院,郑州450001

出　　处：《中国煤炭地质》2016年第7期16-19,共4页Coal Geology of China

基　　金：2010年河南省地质勘查基金(周转金)项目[2010]79号

摘　　要：焦作五里源二叠系下统山西组二_1煤层属无烟煤三号,吸附瓦斯气能力强,含气量较高。根据固体矿产地质勘查规范要求,对二_1煤煤层气赋存情况做了勘查和样品含气量测试,对影响勘查区二_1煤层瓦斯赋存条件的主要地质因素如煤层厚度、煤层顶底板岩性的气密性、以及区内断裂构造性质等进行了分析。研究表明:二_1煤层厚度越大,含气量就越高;泥质岩性对煤层瓦斯的富集和逸散能起到了良好的储存和阻隔作用;构造破碎带往往会形成导气通道,距离断裂带越近,煤层生成的瓦斯越容易逸散,从而降低了煤层的含气量。The coal II1 in lower Permian Shanxi Formation, Wuliyuan, and Jiaozuo belongs to anthracite III with strong gas adsorptivity and high gas content. According to specification requirements, carried out coal II1 CBM hosting exploration and sample gas content tests;and analyzed main geological factors such as coal thickness, coal roof and floor lithologic gas tightness, as well as faulted structure property etc. impacting coal II1 gas hosting condition. The study has shown that the larger the coal II1 thickness, the higher the gas content. The lithology of argillaceous rocks has played a good preservation and barrier effects on coal seam gas enrichment and dissipation. The structural fracture zone can often form gas guiding channels, the nearer the fracture zone the easier the coal seam gas dissipation, thus reduced coal seam gas content.

关 键 词：五里源勘查区 二1煤层瓦斯赋存 特征分析 

分 类 号：TD712.2[矿业工程—矿井通风与安全]