DISTINCT ELEMENT ANALYSIS FOR PROGRESSIVE FAILURE IN ROCK SLOPE

摘要

This paper investigates a numerical modeling of progressive failure in rock mass using the distinct element analysis. The numerical modeling consists of two processes. The first is to get the mechanical properties of synthetic specimens composed of circular rigid elements with the bonded effect between elements. The second is to analyze deformation of a reduced-scale rock slope under the gravity increased condition. With the calibrated properties of the synthetic specimen unchanged, an approach to initialize stress state in the slope model is studied. Evolution of displacements and the resulting initiation of failure surface in the slope model are displayed.