Coupled stress and fluid flow analysis of the arch dam foundation of Xiluodu Hydropower Station

A set of united coupled elasto plastic stress and fluid flow control equations are established with generalization of jointed rock masses as equivalent continuum media. The coupled analysis of dam site shows that the seepage field of coupled analysis is very different from that of uncoupled analysis. The safety factor against sliding of rock discontinuities decreases, which has adverse influence on the safety of dam.