不同初始能量下瓦斯爆炸特性的数值模拟研究

Numerical Simulation Study on the Explosion Characteristics of Gas under Different Initial Energies

摘要: 为了研究煤矿巷道内瓦斯爆炸的危害性，采用数值模拟的方法在200长的掘进巷道中进行模拟实验，研究在不同初始能量下(不同瓦斯浓度、体积)对爆炸后果的影响。研究发现，相同浓度下。体积越大能达到的爆炸超压和温度也最大，火焰传播距离越长；在相同最大当量比情况下，200 m³时火焰传播距离是100 m³的两倍左右，并且高温状态持续更久，高压区域越远。

Abstract: In order to study the hazards of gas explosions in coal mine roadways, a numerical simulation experiment was conducted in a 200-long tunneling roadway to investigate the influence of different initial energies (different gas concentrations and volumes) on the consequences of the explosion. The research found that at the same concentration. The larger the volume, the greater the explosive overpressure and temperature that can be achieved, and the longer the flame propagation distance. Under the same maximum equivalent ratio, the flame propagation distance at 200 m³ is approximately twice that at 100 m³, and the high-temperature state lasts longer, with the high-pressure area being farther away.