多层介质中爆炸破坏效应的实验研究

多层介质由压实层、碎石层和混凝土层组成。用量纲分析法导出多层介质中爆破混凝土层破坏效应的函数表达式。通过模拟实验,获得了药包不同药量、不同埋深条件下多层介质破坏效应的试验数据,并通过回归分析,拟合出漏斗的可见深度、实际半径与装药量关系的经验表达式。试验中利用高速录像研究了介质表层鼓包运动的规律。试验结果表明,混凝土层和碎石层在鼓包运动的中期对爆炸破坏效应有较明显的影响。

AN EXPERIMENTAL STUDY ON DAMAGE EFFECT CAUSED BY AN EXPLOSION IN MULTILAYER MEDIUM

A multilayer medium consi sts of compacted,gravel and concre te layers By use of dimensional an alysis,the formula for damage effe ct of concrete layer caused by an explosion in multilayer medium wa s derived Through simulative exper iments,the data concerning damage effect of multilayer were obtaine d under the conditions of various charge weights and depth of burial s And based on regression analysis to the data,the empiric formulae o f describing the relation of crate r's apparent depth and actual radi us to charge weights were fitted I n the course of experiments,the hi gh speed kinescope is used to stud y the law of heaving motion of sur face medium layer The experimental results show that the gravel and c oncrete layers have a remarkable i mpact on the damage effect in the mid way of heaving motion