瓦斯放散初速度影响因素实验研究

通过实验测定了吸附时间、粒径、水分对瓦斯放散初速度的影响,并运用菲克定律进行了分析,为煤吸附解吸瓦斯机理的揭示提供一定的理论基础。结果表明,在煤样吸附瓦斯饱和前,吸附时间对瓦斯放散初速度影响较大,当吸附饱和后瓦斯放散初速度不再受吸附时间的影响;瓦斯放散初速度随粒径的减小而增大;瓦斯放散初速度随水分的增加而减小。

Experimental Study on the Influence Factors of Initial Speed of Methane Diffusion

The effect of adsorption time,particle size and moisture on initial speed of methane diffusion is measured through test,which is analyzed by fick's laws.All these provide the theoretical basis for revealing the mechanism of coal adsorption desorption gas.Results show that the effort of adsorption time on initial speed of methane diffusion is very great before absorbing saturation;the absorption time couldn't affect the initial speed of methane diffusion after absorbing saturation;with particle size decreasing the initial speed of methane diffusion increases;with moisture increasing the initial speed of methane diffusion reduces increases.