Análisis de la estabilidad del talud de la Casa de Máquinas, utilizando el método de elementos finitos y equilibrio límite del Proyecto Hidroeléctrico Delsitanisagua 180MW

Abstract

This research refers to the analysis of slope stability of the Powerhouse of Delsitanisagua 180MW Hydroelectric Project, using the finite element method and limit equilibrium. The main objective of this research is the analysis of the stability of the left batter located in the area of penstock. To achieve this it was model the profile of the slope using GeoStudio (SLOPE / W) software and Phase2 software (version 8.0). Geomechanical soil parameters were taken from geotechnical tests performed by the Company. The results determinated an unstable condition of the sector, obtaining a safety factor Fs = 1.23 (limit equilibrum) and Fs = 0.70 (finite elements), not meeting the criteria of stability according to major works for wich the safety factor should be greater than or equal to 1.5. By modeling and careful analysis it was determined the main determining and triggers factors that affect the stability and possible remediation measures to ensure the technical and economic feasibility of the Project.