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通过实验测试了管道式气体爆炸冲击波对置于管道内的白鼠的杀伤作用,当甲烷体积分数为10%时,爆炸产生的最大压力为0.264 MPa,白鼠受伤最严重。将一些特制的障碍物置于管道可产生更强的冲击波,这有助于增强甲烷爆炸对白鼠的杀伤作用。当甲烷体积分数为10%时,有障碍物条件下的最大爆炸压力可达到0.298 MPa。由此可知,为减小煤矿中事故冲击力,应尽量避免障碍物的存在;随爆炸次数增加,白鼠致死压力减小。
Experiments were carried out to test the killing effect of pipeline gas explosion shock waves on the rats placed in the pipeline. When the volume fraction of methane was 10%, the maximum pressure caused by the explosion was 0.264 MPa, and the rats were most seriously injured. Placing some specially crafted obstacles in the pipeline produces stronger shock waves, which helps enhance the lethality of methane explosions on rats. When the volume fraction of methane is 10%, the maximum explosion pressure under obstacle conditions can reach 0.298 MPa. It can be seen, in order to reduce the impact of accidents in coal mines, should try to avoid the existence of obstacles; with the increase in the number of explosions, reducing the lethal stress in rats.