Comparación entre modelos numéricos 2D y 3D para el análisis de estabilidad de taludes en roca y suelo

Abstract

The present article was performed for the purpose of established the differences and similarities between the results of the analysis methods with 1D, 2D and 3D numerical models of slopes in rock mass and soil for later, with the use of the MIDAS GTS NX software using the constitutive models: Mohr Coulomb, Hoek- Brown generalized, Join Rock Mass with calculation methods SRM (Strength Reduction Method) and general limit equilibrium method (Simplified Bishop). For the ground slope, the information it started from existing and processed information; it is a failed slope, the topography data is available from which it has been possible to verify the failure geometry with the numerical models. In the rock mass slope was carried out the geological survey of in situ discontinuities was also carried out; a stereographic analysis was also carried out to verify if wedge, flat or topping failure occurred in the rock mass. Based on the results of the numerical models, the safety factors, failure geometries, maximum shear stress and displacements for each one of the slopes have been compared, obtaining as a result that, although 3D modeling is more complex, it better resembles way to reality in the two types of slope.