论文部分内容阅读
一、前言煤层内瓦斯释放后成为游离瓦斯,它通过采过的煤层或者在掘进巷道周围产生的破碎带涌入到井下。对这一现象说明,在弄清煤对瓦斯吸附和解吸特性的同时,了解瓦斯在裂缝和孔隙内移动的机理也是很重要的。将破碎后粒度整齐的煤颗粒,压成圆筒状试样,进行瓦斯渗透试验,测定了成型多孔体试样的孔隙率和渗透率,随着加压和煤颗粒的粒径大小的变化,应用毛细管模型考
I. INTRODUCTION Gas inside the coal seam becomes free gas after it is released. It pours into the well through the coal seam that has been picked up or the crushing zone generated around the driving tunnel. This phenomenon shows that it is also important to understand the mechanism of gas movement in cracks and pores while understanding the characteristics of gas adsorption and desorption. The coal particles with the neat particle size after crushing were pressed into a cylindrical sample to carry out gas permeation test. The porosity and permeability of the formed porous sample were measured. With the changes of the pressure and the particle size of the coal particles, Application of capillary model test