Análisis probabilístico de estabilidad del talud ubicado en el sector El Plateado sur de Ecuador, para determinar zonas seguras de construcción

Abstract

Abstract:Landslides or mass movements cause major disasters and considerable economic losses, that can lead to a significant environmental impact, especially in populated areas. The probabilistic analysis of slope stability considers the uncertainty of assumed geotechnical parameters and the heterogeneity of the soil. The slope analyzed is located in El Plateado, Loja, and was characterized with data collected from geotechnical and geophysical studies available at the municipality of Loja. In the probabilistic analysis, the geotechnical parameters of internal friction and soil cohesion were varied. The study was carried out in two scenarios: (1) Friction angle with uniform distribution and cohesion with normal distribution and (2) Friction angle and cohesion with normal distribution. The results obtained show the importance of the variation of soil mechanical parameters and sample distribution in slope stability analysis. It is concluded from the analyses that saturation is a triggering factor for slope instability.