爆炸冲击波通过砾石层衰减规律的试验研究

EXPERIMENTAL STUDY ON SHOCK WAVE ATTENUATION CAUSED BY GRAVEL LAYER

采用激波管对不同长度、不同空隙率的砾石层消减激波的作用进行了试验研究,并在野外地下坑道进行了化爆试验,两种试验得出了规律性一致的结论。大压力激波衰减更快;砾石层的长度和空隙率对激波的衰减有显著的影响。根据试验数据获得了确定砾石层长度的计算公式。

The experiments of shock wave attenuation through gravel layer with varying thickness and loose density have been done by shock wave tube in room. And similar experiments were also conduced in underground channels in the field, reaching consistent results with that from experiments in room. The results of the experiments showed that the shock wave was subjected to a fast attenuation at relative higher pressure,and its attenuation was observably affected by the length and loose density of the gravel layer. Moreover,the paper presented the empirical formula of calculating the length of the gravel layer educed based on the test datum.