岩崩灾害离散元和有限差分耦合分析

Discrete Element Method and Finite Difference Coupling Analysis of Rock Slide Disaster

由于岩崩的动力特性,采用有限元等连续方法计算物体受冲击破坏的大变形问题存在不足,故采用PFC(颗粒流程序)和有限差分对受岩崩进行模拟。PFC在模拟结构微观破坏方面比较有优势,FLAC在模拟宏观坡体存在优势,结合两者的优点,为正确设计滚石防护结构提供指导。

For the dynamic traits of rock slide, it is inadequate to adopt continuation melhods such as finite element to calculate the large deformation of objects after shock failue, so PFC （particle flow code） and finite difference are applied to simulate the rock slide. PFC has an advantage in simulating micro structural failure, while FI,AC is outstanding in simulating macro slope, so advantages of both are used to instruct the design of rolling stone protection structure.