Análisis del peligro por fenómenos de remoción en masa en los taludes de un tramo de la quebrada Shanshayacu, zona Quitumbe, Distrito Metropolitano de Quito

Abstract

The present work has an approach to contribute to the understanding of the applied geology, through the discussion and assessment of the results obtained from theoretical and experimental work. This study aims to Analyze the Hazard by Mass Removal Phenomena in the slopes of the Shanshayacu Gully at the South of the Metropolitan District of Quito (DMQ), where the ‘Terranova” and “Ciudadela de El Ejército” neighborhoods are located. The objectives will be achieved by means of a slope stability analysis using the Equilibrium Limit method; starting from the inventory of Mass Removal Phenomena, soils sampling; and, modeling of the different slopes in the section of the studied area in a computer modeling software, for which slope geometry (a centimetric detail) and the geomechanical characteristics of the different lithological strata must be known. The results obtained in this study include: an inventory map, lithostratigraphic columns (right and left margin), geotechnical characteristics and the Safety Factor. The discussion is based on the causes that provoke instability and also suggest mitigation measures to control the existing problems based on the causes of the movement. The conclusions and recommendations will provide a starting point for future actions that could be taken by the “Secretaría de Gestión del Riesgo” of the DMQ.