外加水分对煤中瓦斯渗吸效应影响的实验研究

发布时间：2018-03-06 12:00

本文选题：等压　切入点：含水率　出处：《煤矿安全》2017年11期 　论文类型：期刊论文

【摘要】：针对目前实验室研究含瓦斯煤渗吸效应的缺陷,搭建等压实验平台,在实验系统压力恒定条件下,对不同水分自然流入含瓦斯煤后的渗吸效应进行测试,并与非恒压条件下含瓦斯煤渗吸效应进行对比。结果表明:随着含水率的增加,渗吸量逐渐增大到稳定的数值,但渗吸量的增加幅度逐渐变小;渗吸速度包括快速增加、缓慢持久、衰减至0 3个阶段;等压条件下比非等压条件下的渗吸量和渗吸率高。
[Abstract]:Aiming at the defects of the laboratory research on the permeation effect of gas-bearing coal at present, an isobaric experimental platform was set up. Under the condition of constant pressure of the experimental system, the permeation effect of different moisture naturally flowing into the gas-bearing coal was tested. The results show that: with the increase of water content, the amount of permeability gradually increases to a stable value, but the increasing range of infiltration capacity becomes smaller, and the speed of infiltration increases rapidly, and the effect of gas absorption on coal under the condition of non-constant pressure is compared. At the same time, the amount of osmotic absorption and the rate of osmotic absorption under isobaric condition are higher than those under non-isobaric condition.
【作者单位】：河南理工大学安全科学与工程学院;瓦斯地质与瓦斯治理重点实验培育基地;
【基金】：国家自然科学基金资助项目(51274090)
【分类号】：TD712

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