摘要
针对矿井瓦斯安全现状的变化,借助管径0.1 m×0.1 m、管长20 m的实验管道模拟研究了掘进巷道内瓦斯爆炸的传播规律。研究结果表明:掘进巷道内局部瓦斯超限爆炸后,火焰传播速度会先增长后衰减,最大爆炸超压峰值沿传播方向上呈现"双凹形"的分布规律,最大爆炸超压峰值和火焰传播速度的相互关系可分为4段。
Aiming at the change of mine gas safety situation,we research propagation law of gas explosion in excavation roadway by experimental pipe of 0. 1 m × 0. 1 m diameter and 20 m length. The results show that flame propagation speed increased first and then declined after the explosion in excavation roadway due to the local gas overrun. The peak value of overpressure is ＂ double concave-shaped＂ along the pipe. In addition,the relationship between flame propagation speed and peak value of overpressure can be divided into four stages.
出处
《煤矿安全》
CAS
北大核心
2015年第1期152-155,共4页
Safety in Coal Mines
关键词
瓦斯爆炸
火焰传播速度
爆炸超压
掘进巷道
传播规律
gas explosion
flame propagation velocity
explosion overpressure
excavation roadway
propagation law
