为了研究负压环境下煤的瓦斯解吸规律,对阳泉寺家庄矿煤样在负压环境下进行瓦斯解吸过程的实验室模拟测试,得到了煤样在不同吸附平衡压力、不同解吸负压条件下的瓦斯解吸量随时间变化的实测数据.分析了在一定吸附平衡压力条件下,不同解吸负压对煤样瓦斯解吸量的影响.运用常见的瓦斯解吸经验公式对实测数据回归和误差分析,以王佑安公式为模型,建立了负压环境下煤的瓦斯解吸经验公式,结果表明新建经验公式能够描述负压环境下煤的瓦斯解吸规律.
In order to study the gas desorption law under negative pressure,the laboratory simulation test of gas desorption process regarding the coal sample from Yangquan Sijiazhuang coal mine under negative pressure was implemented,accordingly,the measured data of the gas desorption varied with time was achieved with the coal sample was at different adsorption pressures and desorption negative pressures.The effect of different desorption negative pressures on the gas desorption of the coal sample at certain adsorption equilibrium pressure is analyzed.Applying the common empirical equations to process the regression and error analysis for the measured data,using Wang you-an equation as model,a new empirical equation for the coal gas desorption was established with the negative pressure,and the result shows the new established empirical equation can describe the gas desorption law of the coal under negative pressure.