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通过实验,对煤矿井下存在的多元混合气体的爆炸极限和临界氧浓度进行了分析和研究。研究结果表明,痕量的H2、CO、C2H6使CH4的爆炸极限范围发生了变化,增加了CH4爆炸的危险性。同时,实验结果还表明,这些可燃性气体和CH4混合后的临界氧浓度也有相应的变化。该研究对矿井瓦斯爆炸事故的预防,煤矿安全防爆工作提供了可靠的理论指导。
Through experiments, the explosion limit and critical oxygen concentration of multivariate mixed gas existing in underground coal mine are analyzed and studied. The results show that traces of H2, CO and C2H6 have changed the explosive limit of CH4 and increased the danger of CH4 explosion. At the same time, the experimental results also show that these combustible gases and CH4 mixed with the critical oxygen concentration also has a corresponding change. The study provides a reliable theoretical guide for the prevention of mine gas explosion accidents and the coal mine explosion-proof work.