关键词: 尾矿库, FLAC^3D, 地震作用, 稳定性分析

Abstract: Numerical simulation is one of the effective methods to analyze the stability of geotechnical engineer.The finite difference software FLAC^3D（Fast Lagrangian Analysis of Continua in 3 Dimensions) was applied to establish a 3D-mesh model and a fluid-solid model of an iron mine tailing pond,and the constitutive relation of tailings was described by the Mohr-Coulomb model to analyze the stability of tailing dam under earthquake.The results indicate that the tailing pond has been on the whole stable under strong earthquake,except some partial liquefaction which can possibly lead to breaking.And the most active area of tailing pond is in the edge of dam base or dam crest.The results also show that it is feasible to analyze the overall stability of tailing pond under earthquake action by means of  FLAC^3D,which provides an access to analyze some dynamic problems of tailing pond.

Key words: Tailing pond, FLAC^3D, Earthquake action, Stability analysis