【摘要】 为了研究海孜煤矿9煤层煤体的瓦斯解吸规律,在实验室对煤样进行了5种不同瓦斯平衡压力下解吸量的测定,通过对解吸数据进行分析处理,发现瓦斯平衡压力与煤样的解吸具有正相关性,对数公式能相对准确地描述煤层的瓦斯解吸规律。对数公式中系数A与瓦斯平衡压力满足指数关系,得到了针对本煤层的指数公式。利用现场煤样瓦斯解吸曲线拟合系数A与指数公式可以对煤层瓦斯压力进行推算,现场验证效果较好,具有较高的应用价值。更多还原

【Abstract】 In order to study gas desorption law of No. 9 coal seam in Haizi Coal Mine,we measure gas desorption volume of coal samples under five kinds of gas equilibrium pressure in the laboratory. By analyzing the desorption data,we find that the gas equilibrium pressure has a positive correlation with desorption properties of the coal,and the logarithmic formula can relatively accurately describe the desorption law of the coal seam. Coefficient A of logarithmic formula meets the index relationship with gas equilibrium pressure,and the index formula of this coal seam has already obtained. We can use the relationship of coefficient A and gas pressure to calculate gas pressure of No. 9 coal seam; on-site validation effect is better with higher application value.更多还原