含瓦斯煤体渗透规律的实验研究

Experimental Research on Seepage Rule of Coal-body Absorbed by Methane

利用自行研制的出入口压差可调煤岩渗透实验系统,测定了在不同压差和气体介质条件下,不同吸附性能煤样的渗透性,对含瓦斯煤体的渗透规律进行了研究。研究结果表明,煤对瓦斯的吸附作用是影响煤体渗透特性的主要因素,同时通过对实验数据的分析,建立了煤岩的渗透率与瓦斯吸附量的关系模型。

Permeability of coal samples with different absorption ability was tested and penetrative rule was researched under different pressure differentials and gas mediums by applying self-developed coal-rock seepage experiment system,whose inlet pressure differential was adjustable Results showed that the absorption action of coal on methane was important factor of influencing coal permeability By analyzing test data,relationship model of coal-rock permeability and methane absorbance was set up.