水分对煤中瓦斯的置换作用实验研究
发布时间：2018-07-21 13:30
【摘要】：为了研究水分对煤中瓦斯的置换作用,搭建实验平台,保证实验系统压力恒定,实验研究了不同含水率、不同吸附平衡压力下水分对煤中瓦斯的置换作用。实验结果表明:相同吸附平衡压力下,置换量、置换率随着时间的延长逐渐增大,但增加的幅度不断减小,最大置换量、最大置换率与含水率、吸附平衡压力正相关;相同含水率下,1.5 MPa较2.5 MPa下的最大置换量小,但两者的最大置换率相差不大;置换速度经历了快速增加、缓慢持久、衰减至0这3个阶段。
[Abstract]:In order to study the displacement effect of moisture on gas in coal, an experimental platform was set up to ensure the constant pressure of the experimental system. The displacement effect of water on gas in coal under different moisture content and different adsorption equilibrium pressure was studied experimentally. The experimental results show that under the same adsorption equilibrium pressure, the displacement amount and displacement rate increase gradually with the extension of time, but the increasing amplitude decreases continuously, and the maximum displacement rate are positively correlated with moisture content and adsorption equilibrium pressure. Under the same moisture content, the maximum displacement rate of 1.5 MPA is smaller than that of 2.5 MPA, but the maximum displacement rate of the two has little difference, and the displacement velocity has experienced three stages: rapid increase, slow and lasting, and attenuation to 0.
【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
本文编号：2135678
[Abstract]:In order to study the displacement effect of moisture on gas in coal, an experimental platform was set up to ensure the constant pressure of the experimental system. The displacement effect of water on gas in coal under different moisture content and different adsorption equilibrium pressure was studied experimentally. The experimental results show that under the same adsorption equilibrium pressure, the displacement amount and displacement rate increase gradually with the extension of time, but the increasing amplitude decreases continuously, and the maximum displacement rate are positively correlated with moisture content and adsorption equilibrium pressure. Under the same moisture content, the maximum displacement rate of 1.5 MPA is smaller than that of 2.5 MPA, but the maximum displacement rate of the two has little difference, and the displacement velocity has experienced three stages: rapid increase, slow and lasting, and attenuation to 0.
【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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，本文编号：2135678
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