Estimation of the Critical Seismic Acceleration for Three-Dimensional Rock Slopes

An analytical approach for the estimating of critical seismic acceleration rock slopes was proposed in this study. Based on 3D horn failure model, coefficient conducted with modified Hoek–Brown (MHB) criterion framework upper-bound theory first time. The nonlinear is incorporated into three-dimensional rotational mechanism, and a generalized tangent technique introduced employed to convert linear criterion. coefficients obtained from study were validated by numerical simulation results based finite element limit analysis. agreement showed that method effective. Finally, design charts provided exceptional cases practical use engineering.