Rheological model in rock slope stability analysis

Abstract

Based on equivalent Mohr-Coulomb criterion theory, it was successfully applied to FEM software-Ansys by artificial conversion among rock mass parameters, and the size relation between the transformed parameters and original parameters were verified. At the same time, in allusion to rheological characteristics of rock mass, by making use of the theory of rheological model with fractional order derivatives, a practical calculative method in which rheological characteristics were taken into account was presented, and rheological problem of rock slope were managed by changing material characteristics in the process of elasticity-plasticity analysis, an example shows that this method is feasible.

Keywords

equivalent Mohr-Coulomb criterion / artificial conversion / rheological characteristics / rheological model / fractional order derivatives