采空区煤炭自然发火标志性气体实验研究及确定

Experimental Study and Confirmation of the Symbolic Gas of Coal Spontaneous Combustion in Goaf

指标气体作为预测预报煤炭自然发火的重要手段得到广泛应用,而其技术关键在于指标气体的选择。本文选用某矿5#煤81503工作面煤样进行程序升温-气象色谱试验,分析煤自然氧化过程气体产物和温度间关系,通过检测生成气体的成分去反应火情温度的变化。研究成果对于预测预报煤炭自然发火指标性气体的选择和采空区防灭火具有一定的指导意义。

Index gas is widely used as an important means to predict coal spontaneous combustion, and the key technology is the selection of index gas.In this paper, the temperature programmed gas chromatography test is carried out on the 81503 working face of No.5 coal seam in a mine. The relationship between gas products and temperature in the process of natural oxidation of coal is analyzed. The change of fire temperature is reflected by detecting the components of gas generated. The research results have certain guiding significance for the prediction of the selection of the index gas of coal spontaneous combustion and the fire prevention and extinguishing in the goaf.