岩石动态损伤特性的实验研究

摘要

利用一级轻气炮技术，对2类岩石进行冲击损伤实验，并对软回收样品进行了超声波测试，得到岩石的动态损伤与冲击波速和超声波传播特性的关系．结果表明声波衰减系数可作为描述岩石动态损伤的主要参量．%The shock-induced experiments for two typical rocks are doneusing the planar impact technique on the one-stage light gas gun, and the ultrasonic tests on the damaged rocks have been measured by use of the ultrasonic pluse-transmission method. The shock-induced damage of rocks are related with the shock speed and the attenuation coefficient. The attenuation coefficient can be used as main damage parameter for constructing the damage of rocks under dynamic loading.