炸药周围水层对空气冲击波反射超压影响的实验研究

通过在容器内用适量水包裹炸药进行水消减冲击波的爆炸实验，研究水与炸药的质量比值、比例距离对冲击波反射超压的影响，并对水消减冲击波的规律进行了分析。研究结果表明：相比于无水爆炸，置水后冲击波反射超压随比例距离增大呈先增后减趋势，在比例距离为0.255 m/kg¹³时，置水后的反射超压峰值均大于无水时的结果，且随着水药比的增大而增大, 水药比为6时的压力峰值可达无水时的8倍；当比例距离增大至1.21 m/kg¹³时，水可以显著降低反射超压峰值，相比无水爆炸降幅可达60%.

An Investigation on Mitigation Effect of Water Surrounding an Explosive on Reflected Overpressure of Shock Wave

The mitigation effect of water on blast shock is investigated. The explosion is tested in a confined space without and with water in order to estimate the influences of the parameters, such as water-to-explosive weight ratio and scaled distance, on the reflected overpressure of shock wave. The results indicate that the reflected overpressure of explosion immersed in water firstly increases and then decreases with the increase in scaled distance compared with that without water. It is found that the reflected overpressure significantly increases with the increase in the water-to-explosive weight ratio when the scaled distance is not larger than 0.255 m/kg¹³. Typically, the overpressure increases eight-fold when the ratio is 6. The overpressure can be decreased by 60% by using water when the scaled distance is 1.21 m/kg¹³.