平顶山矿区煤层气赋存特征及影响因素分析

通过对矿区二1煤层大量的，资料研究，分析了二1煤煤层气赋存特征，沿煤层倾向由浅至深煤层气含量增高，成分由N2带、CO2和CH4混合带渐变为CH4带，煤层气含量等值线展布形态与构造线方向基本一致，在向斜轴部含量最高。根据煤层气含量及构造差异在区内划分为4个区块，阐述了影响煤层气赋存的诸多因素，认为本区煤层气富集程度主要受控于褶曲和煤层埋深。提出了李口向斜轴部附近、首山一矿、八矿深部是煤层气研究开发的有利地段。

An Analysis on CBM Hosting Features and Contributing Factors in Pingdingshan Mining Area

Based on large amount data from the No.Ⅱ1 coal seam in the mining area, analyzed CBM hosting features of the coal seam. The CBM content is increasing from shallow to deep along the dip, from carbon dioxide and methane mixed zone gradually changed into methane zone; expressed CBM content contour configuration is basically accord with structural line trend and highest in syncline axis. Four blocks have divided based on CBM content and structural differences. Expounded many factors that impact CBM hosting, considered that CBM enrichment in the area is mainly controlled by folds and coal seam buried depth. Put forward favorable CBM exploitation sectors： in the vicinity of Likou syncline axis, Shoushan Nos.1 and 8 coalmines.