D&B (Drill and Blow)是什么意思

网络释义

用法例句

In order to research the decay laws of pressure wave and positive pressure actuation duration with the increasing propagation distance under the repeated penetration and explosion of conventional weapons in rock,the tests with varying scale charge and scale distance of the first drilled explosion and the repeated drilled explosion are completed.

为探索常规武器重复打击下岩石介质中压力波及正压作用时间随传播距离的增加而衰减的规律,进行岩石介质中不同比例装药和比例距离的一次钻孔爆炸和重复钻孔爆炸试验。

In order to explore the breakage and damage effect problems of the underground protective engineering in rock under repeated penetration and explosion by precision guided weapons,the contrastive experiments of single-time drilled explosion and secondary drilled explosion have been accomplished.

为了探索精确制导武器对岩石介质中地下防护工程实施重复打击后的毁伤效应问题,进行重复钻孔爆炸和一次性钻孔爆炸对比试验。

This paper analyses the explosion of drill-ground bomb in rock,and numerically analyses the shock caused by drill-ground bomb,gives the dynamic response of the explosion on the underground engineering.

文中分析了钻地炸弹在岩土介质中的爆炸作用,对钻地炸弹爆炸引起的地震动进行了数值分析,给出了地下工事受爆炸作用产生的动力响应。