摘要
水雾、CO2惰性气体和干粉对瓦斯爆燃有很强的抑制作用。随着喷雾量的增大,混入CO2浓度或者喷入干粉质量的增大,火焰传播速度和峰值超压都减少。水雾,惰性气体CO2以及干粉对爆燃的抑制作用在于由于水雾、惰性气体CO2以及干粉的加入,降低了链式反应中H、O和OH等高活性自由基的浓度。
Water - mist, CO2 inert gas and dry powder are very effective on suppressing gas deflagration. With the increase of spray wa- ter - mist volume, the mixed CO2 concentration or sprayed dry powder quality are increased and flame propagation speed and peak over- pressure are reduced. The inbibitional effect of water - mist, CO2 inert gas and dry powder on deflagration is that the injection of water - mist, CO2 inert gas and dry powder can greatly decrease the concentrations of H, O and OH in chain reaction.
出处
《煤矿安全》
CAS
北大核心
2012年第8期18-22,共5页
Safety in Coal Mines
关键词
低浓度抽采瓦斯
爆燃
火焰速度
峰值超压
控制
low concentration gas extraction
deflagration
flame speed
peak overpressure
control
