管内低浓度抽采瓦斯爆燃特性研究

 自行设计了管内低浓度瓦斯爆燃实验系统，基于此实验平台，开展了瓦斯爆燃特性实验研究；不同初始压力、不同初始温度对甲烷爆燃特性的影响。实验结果表明，密闭管状空间火焰速度沿长径比是一个先增加后衰减的过程；峰值超压是随着长径比的增大而增大的。火焰传播速度随着初始压力或初始温度的增大而增大，峰值超压亦随着初始压力或初始温度的增大而增大。当初始压力为-0.09Mpa时，瓦斯不会发生反应。

Study on deflagration features of drained low concentration mine gas in pipeline

A deflagration experiment system with low concentration gas in pipeline was self designed.Base on the experiment platform,a series of the experiments was applied to study the low concentration gas deflagration features,the different initial pressure and the initial temperature affected to the gas deflagration features.The experiment results showed that the flame travel speed would be increased with the initial pressure increased and the peak overpressure would be increased with the initial pressure increase...