巷道瓦斯煤尘爆炸环流压力与反射压力研究

发布时间：2019-05-10 19:30

【摘要】：为确定巷道内瓦斯煤尘爆炸环流压力与反射压力的大小,采用爆炸力学理论分析和试验方法,在试验管道和大型试验巷道内测试环流压力与反射压力强度的变化规律。理论分析表明,极弱冲击波环流压力大约比反射压力小一半;极强冲击波反射超压是环流超压的8~23倍。实验结果表明,理论计算值与实验值基本吻合,冲击波固壁反射峰值超压作用于相对传播方向垂直固定物体上的伤害效应远大于水平方向,揭示了反射超压是井下爆炸事故引起财产和人员严重破坏及伤害的原因。
[Abstract]:In order to determine the circulation pressure and reflection pressure of gas and coal dust explosion in roadway, the variation law of circulation pressure and reflection pressure intensity was measured in test pipeline and large test tunnel by means of explosion mechanics theory analysis and test method. The theoretical analysis shows that the circulation pressure of extremely weak shock wave is about half lower than that of reflection pressure, and the reflected overpressure of extremely strong shock wave is 8 鈮，

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