以河南永夏煤田车集煤矿二2煤层为例,在大量实测瓦斯基础参数的基础上,研究了煤的瓦斯吸附特征,对瓦斯含量和工作面预测指标进行了跟踪测试,分析了其相互关系,并对始突瓦斯含量临界值进行了比较研究。通过实验,模拟研究了钻屑瓦斯解吸指标△h2与瓦斯压力、瓦斯含量及煤的破坏类型的关系。综合确定了车集矿二2煤层突出区域预测瓦斯含量临界值为9.0 m3/t,并在实践中得到了验证。 Taking the coal seam No. 2 Coal Seam of Yongji Coalfield in Henan Province as an example, on the basis of a large number of measured gas foundation parameters, the gas adsorption characteristics of coal are studied, and the gas content and working face prediction index are tracked and tested. , And compared the initial gas content threshold of a comparative study. Through experiment and simulation, the relationship between gas desorption index △ h2 and gas pressure, gas content and coal failure types was studied. The predicted gas content critical value in the prominent area of ​​No.22 coal seam of Cheji Mine is comprehensively determined to be 9.0 m3 / t, and has been verified in practice.