Research on Blast Extinguishment of Pool Fire by Using Micro Explosive

本文对叠氮化银微爆炸药柱对甲烷-空气扩散火焰的爆炸熄灭进行了实验研究。为了明确爆炸扩散的特性，将火焰高度、爆炸能量和爆炸点到火焰底部的距离作为参数进行了变化。结果表明，爆炸熄灭概率始终为1的爆炸点处的火焰熄灭距离取决于叠氮化银爆炸产生的冲击波的有效距离，火焰熄灭距离除以爆炸能量的1/3次方后为常数。

Investigation of blast extinguishment of a methane-air diffusion flame by using micro-explosive charges (silver azide pellets) has been performed experimentally. In order to clarify the characteristics of blast extinguishment, the flame height, explosion energy and distance from the explosion point to the flame base were varied as a parameter. As a result, it is found that the flame extinguishing distance from the explosion point, in which the blast extinguishment probability shows always unity, depends on the effective distance of blast wave produced by silver azide explosion, and the value of the flame extinguishing distance divided by explosive energy to the power of one third becomes constant.