含有坑木煤层指标气体优化研究

Study on Gas Optimization of Coal Seam Index with Mine Wood

为提高含有坑木煤层的煤矿巷道指标气体预测预报的准确性和精准度,以唐山矿7250巷道为研究对象,利用程序升温氧化实验系统,将朽木、煤及其混合物升温的氧化气体进行分析比较,结果表明:随着朽木含量的增加,CO、CO2、O2、C2H6、C2H4、CH4体积分数随温度的变化没有单调性,不适用于作为混合物的燃烧状态的预测指标气体,CO/CO2比值呈单调递减变化趋势,受朽木含量的影响较小,可作为巷道火灾预测预报的指标气体。研究结果对含有腐朽坑木的巷道火灾的预测预测具有一定的指导作用。

In order to improve coal mine roadway index gases containing rotten timbers forecasting accuracy and precision, in Tangshan mine roadway 7250 as the research object, using temperature pro-grammed oxidation experiment system, the dead wood, coal and the analysis of the oxidation gases that are heating up the mixture, the results show that with the increase of the content of deadwood, CO, CO2, O2, C2H6, C2H4 and CH4 volume fraction without monotonicity, along with the change of temperature does not apply to as a predictor of gas mixture combustion status. CO/CO2 ratio is monotone decreasing trend, to which the influence of content of deadwood is small, can be used as fire forecast index of roadway gas. The results of this study have a certain guiding role for the pre-diction of roadway fire with decayed pit timber.