离柳矿区沙曲井田煤层含气性及主控因素分析

Gas- bearing Property and Main Geological Controls of Coal Seam in Shaqu Minefield Liliu Mining Area

通过研究沙曲井田煤层含气性特征,分析了影响含气性分布的主控因素,结果表明,不同地质构造类型、水文地质条件、顶底板岩性对煤层气富集的影响均不同;煤层含气量与煤层埋深、上覆基岩厚度、镜质组含量呈正相关关系。总体上看,水文地质有利于煤层气的富集。

Through the research of coal seam gas bearing characteristics in Shaqu coalfield,analysis of the main control factors of gas distribution,the results show that the different types of geologicalstructure,hydrogeological con-ditions,roof and floor lithology influence on coalbed gas enrichment are different;coal seam gas content and buried depth of coal seam,the bedrock thickness,vitrinite content have a positive correlation,Overall,hydrogeology is favor-able to coalbed methane enrichment.