摘要
本文从两个方面叙述总结了硬岩中,地下爆炸引起的自由场的径向质点位移随爆心距的变化规律。其一是分析地下爆炸应力波经验规律结合方程式求解得到的地运动位移,有下规律:D_M/W^(?)=2.01((1/100)(R/W^(?)))^(?)(D_M为地运动位移峰值,W为爆炸当量,R为爆炸距,其二是用地运动位移传感器直接测到的地运动位移,可用D_M/W^(?)=2.1((1/100)(R/W^(?)))^(?)表示地运动位移的变化规律。由这两种方法得到的位移结果的一致性较好。文中并对所得位移经验公式与国外报导的位移公式作了对比分析。
In this paper, the variation of the radial free-field particle displacement with the distance from the explosion center in underground explosion in hard rock saturated with water has been analysed with two different methods. The first method is to derive it from the empirical formula of stress wave parameters connected with the equations of motion. The result is that: D_M/W^(1/3)= 2.01[(1/100)·(R/W^(1/3))]^(-0.6)(where D_M is the peak value of particle displacement in cm. R the distance from explosion source to measurement station in m, and W the yield energy in equivalent kilotons of TNT); The second method is using the particle displacement sensor to measure the radial free-field displacement directly. The result is D_M/W^(1/3)=2.4[(1/100)·(R/W^(1/3))]^(-0.65) The identity of two results is quite in good agreement.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1991年第2期146-152,共7页
Explosion and Shock Waves
关键词
地下爆炸
自由场
质点位移
应力波
underground explosion, free-field, particle displacement
