煤体吸附解吸瓦斯规律及细观特征研究

发布时间：2018-05-02 15:46

  本文选题：瓦斯吸附解吸 + 解吸率　； 参考：《煤矿安全》2017年06期

【摘要】：煤体对瓦斯的吸附解吸特征对防止瓦斯事故以及煤层气抽采技术都具有重要的意义。对不同温度下的煤体吸附解吸规律做了量化研究,同时从细观角度对实验后的煤样做了渗透性分析,得到如下结论:煤体吸附和解吸瓦斯的过程均可分为3个不同的阶段,解吸率与温度呈对数关系变化;从20℃变化到80℃,孔隙率呈现先增后减的趋势;从煤体解吸率和渗透性的角度综合分析,认为60℃是煤体吸附解吸瓦斯的最佳温度。
[Abstract]:The adsorption and desorption characteristics of coal to gas are of great significance to prevent gas accident and coalbed methane extraction technology. The law of adsorption and desorption of coal at different temperatures was quantitatively studied. At the same time, the permeability of the coal samples after experiment was analyzed from a meso point of view. The conclusions are as follows: the process of coal adsorption and desorption can be divided into three different stages. The desorption rate has a logarithmic relationship with temperature; from 20 鈩，

本文编号：1834516