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 increased.The flame travel speed would be increased with the initial temperature increased and the peak overpressure would be increased with the initial temperature increased.