Experimental Study on Damage Properties of Rocks Under Dynamic Loading

摘要

The damage properties of two types of rocks under dynamic loading are studied. The shock-induced experiments are done using planar impact technique on the one-stage light gas gun, and the ultrasonic tests on the damaged rocks have been made by use of the ultrasonic pulse -transmission method. The shock-induced damage of rock is related to the shock speed and the attenuation coefficient o sonic wave, and the latter reflects the damage degree in rock fairly well. The attenuation coefficient a can be used as main damage parameter for construction dam- age model of rock under dynamic loading.