平顶山矿区煤储层特征研究

采用氮气吸附法对平煤集团6个典型矿区煤样的储层结构特征进行了分析，并利用Langmuir方程对瓦斯吸附数据进行拟合分析，研究了煤孔体积对瓦斯吸附参数的影响。实验结果表明：Langmuir方程能够较好地描述煤体吸附过程；不同煤样孔体积差异明显，孔径分布不均；煤中的微孔(孔径d< 10 nm)最为发育，气体吸附也主要集中在微孔段；在瓦斯赋存控制机理方面，微孔主要控制Langmuir体积，影响瓦斯吸附量；而微孔和小孔同时控制Langmuir压力，影响低压段瓦斯吸附速率。

Research on Coal Reservoir Characteristics in Pingdingshan Coal Mining Area

In this paper, analysis was carried out on the characteristics of the reservoir structure of coal samples taken from six typical mining areas of Pingmei Shenma Group by using the nitrogen adsorption method, with the Langmuir equation, fitting analysis was made on the gas adsorption data, and study was conducted on the influence of the coal pore volume upon the gas adsorption parameters. The experimental results indicated that the process of coal adsorbing gas can be well described by the Langmuir equation; different coal samples had different pore volume and the pore size distribution was non-uniform; the micropores (d< 10 nm) in coal samples were well developed and the gas adsorption mainly concentrated in the micropores; in respect of the control mechanism of gas occurrence, the micropores mainly controlled the Langmuir volume and affected the gas adsorption quantity; the micropores and small pores simultaneously controlled the Langmuir pressure and affected the gas adsorption rate at the stage of low pressure.