Análisis del comportamiento de los movimientos en masa en la cuenca media del caño parrado en el municipio de Villavicencio-Meta

Abstract

The concept of mass movement refers to all those processes by which a volume of material consisting of rock, soil, earth, debris or rubble, by the action of gravity, moves downhill (Instituto Distrital de Gestión de Riesgos y Cambio Climático, 2023). Some mass movements can be slow, imperceptible and diffuse, while others can develop high velocities, determined by rupture surfaces (GEMMA, 2010). The Buenavista district of the city of Villavicencio is located on the flank of the eastern mountain range, on the trace of the Colepato geological fault (Parra & INGEOMINAS, 2001), a sector where mass movements occur, which are affecting the population adjacent to the Caño Parrado due to the high slopes and seismic movements that occur in the area constantly (Autora, 2023). Caño Parrado is a tributary of the Guatiquía river, located south of the city of Villavicencio in the Buenavista district, in commune 1; the micro-watershed is affected by natural phenomena that intervene to different extents in factors such as soil cover, slope of the land, intrinsic characteristics of the materials, rainfall and tectonic activity. Specifically related to mass movements, which affect the population residing in the sector, presenting erosive and clogging processes that affect the foot of the mountain (Alcaldía de Villavicencio, 2023). On the other hand, from the Methodological Guide for the zoning of threat due to mass movements in scale 1:25,000, the susceptibility was indicated based on the conditioning and triggering factors of the landslides present in the Caño Parrado micro-basin, being this of fall type or/and complex movements with a high threat due to the weak conditions of the materials present , i.e. generated by high rainfall, saturating the materials whose s densities exceed the estimated ones (Methodological Guide 1:25,000, 2017).