侵彻爆炸条件下岩石边坡破坏效应的数值模拟

Numerical simulation of destruction effect in rock slope under penetration and explosion

运用爆炸冲击非线性有限元理论,对侵彻爆炸条件下岩石边坡的破坏,如爆炸成坑效应、爆炸波传播过程进行了模拟,算例结果验证了本文方法的有效性。在此基础上,假定在拉力作用下单元可以分离,岩石单元和炸药单元之间都为可破坏接触面,对岩石破碎过程进行了模拟,算例结果与实际情况比较符合。

The Nonliner finite element theory for blast and explosion is applied to simulate the destruction such as the crater effect and propagation of blast wave in rock slope under penetration and explosionr. The numerical examples show that the proposed method is efficient.On the basis of hypothesis that the elements can be separated under tension and the interface between rock elements and dynamite element is destructible, the fragmentation process of rock is simulated. The numerical examples are in good agreement with the experimental results published by others.