装药长径比对坑道中冲击波峰值压力影响的试验

现代精确制导武器的装药呈细长化的发展趋势.为获得现代武器装药长径比对坑道中冲击波峰值压力的影响规律,共进行了11次比例模型坑道爆炸试验.模型坑道长10.0 m,由钢筋混凝土拱单元组成,单元截面积为0.67 m2;TNT炸药在坑口外爆炸,装药量范围为 1.0～4.6 kg.用压力传感器记录了坑道中的冲击波波形,由实测数据得到了不同装药长径比情况下坑道中冲击波峰值压力的分布,分析了装药长径比对坑道中冲击波峰值压力的影响规律.

Influence of length/d iameter ratio of explos ive charge on in-tunnel b last peak pressure

The geometry of explosive charges of modern precision guided munitions has been becoming slender and slender. In order to obtain the influence of the length/diameter ratio of the explosive charges on in-tunnel blast peak pressure, eleven scale high-explosive experiments were conducted. The test tunnel was fabricated from reinforced concrete sections of arc shaped cross-sections. The tunnel section was constructed from reinforced concrete having an area of 0.67 m^2 and a length of 10.0 m. Explosive charges of TNT, ranging in mass from 1.0 kilograms to 4.6 kilograms, were detonated outside the entrance of the model tunnel. Blast gages were flush-mounted in the wall of the model tunnel sections to record side-on blast waves as they propagated down the tunnel. The blast peak pressures down the tunnel with different length/diameter ratio of explosive charges were presented, and the influences of the length/diameter ratio of the explosive charge to on-tunnel blast peak pressure were analyzed.