云煤一矿钻屑瓦斯解吸指标Δh_2研究

Study on Gas Desorption Index (Δh_2) of Drilling Cutting in Yunmei No.1 Coal Mine

在实验室中对煤样进行了瓦斯压力吸附平衡实验、工业分析测定及坚固性系数测定,研究了瓦斯解吸指标Δh2、瓦斯压力P以及坚固性系数f值之间的关系。实验结果表明:Δh2与P之间符合幂函数关系,Δh2的变化能较好反映P的变化、显示突出危险性的大小,使用Δh2预测工作面突出危险性在云煤一矿具有合理性。

The experiments about gas pressure adsorption equilibrium,industrial analysis and ruggedness coefficient of the coal samples were carried out in the lab,and then the relationship between the gas desorption index（ △h2 ） ,gas pressure（P） and ruggedness coeffi- cient（f） were studied. The experimental results show that：the relationship between Ah2 and P is in accord with the power function,P was better changed with Ah2 and the outburst danger was displayed. Using the gas desorption index （ △h2 ） to outburst prediction of workface in Yunmei No. 1 Coal Mine is reasonable.