潘三矿11-2煤层瓦斯赋存主控因素分析

Analysis of Main Influencing Factors of Gas Occurrence in 11- 2 Coal Seam in Pansan Coal Mine

为了研究淮南潘三矿11-2煤层的瓦斯赋存规律和主控因素,运用瓦斯地质理论和线性回归的方法,结合潘三矿地质勘探期间瓦斯地质资料和现场实测瓦斯数据,分析了11-2煤层瓦斯赋存特征,探讨了煤层瓦斯赋存与埋藏深度、地质构造、顶底板岩性、煤厚和煤体结构之间的关系。结果表明:煤层埋深、地质构造和顶板岩性是影响11-2煤层瓦斯赋存的主要控制因素,煤厚增加使得瓦斯含量也相应增大,构造软煤的不均匀分布在一定程度上增大了瓦斯突出危险性,从而为潘三矿煤与瓦斯突出危险性预测提供了依据。

In order to study gas occurrence regularity in 11- 2 coal seam in Pansan Coal Mine and the main influencing factors,the features of gas occurrence in 11- 2 coal seam was analyzed and the gas occurrence in dependence on coal seam depth,geological structure,roof and floor lithology,coal body structure was discussed.The results showed that coal seam depth,geological structure and roof lithology are the main influencing factors of gas occurrence in 11- 2 coal seam. With the coal seam thickness increasing,gas content rises,and the inhomogeneous distribution of tectonic soft coal induces gas outburst hazard rising to some extent. The study results provide a basic reference to prediction of coal and gas outburst in Pansan Coal Mine.