Análisis de la zona de remoción de masa, sector de la vereda Servitá, municipio de Villavicencio: alcance de la amenaza y Soluciones de ingeniería

Abstract

Villavicencio, the capital of the department of Meta, better known as La Puerta al Llano (Llanos Gate) is situated in the Colombian Llanos Foothills. The highway between Bogota and Villavicencio crossed the eastern flank of the Colombian Eastern Cordillera. The Servita landslide which the landslide of this research affected a part of this highway. This site that known as Vereda Servitá is located to 8 km to Villavicencio, present an annually high rate of heavy rainfall and seismic activity by tectonic activity of Servita Fault which has been recognized as active. These factors in part are the cause of the landslide development in this zone of the Eastern Cordillera. Due to the high rates of rainfall that occurred in this area during 2017 La Niña (ENSO), the landslide of this research start its movement between the months of May and June. In this time were activated several landslides that in turn caused damages to the highway and households near or in this site. Here with the research of the zone was analyzes the rock massif and the soils of this zone, with the order to determine the scope of threat through maps that show from the type of soil, geology, geomorphology, slopes, among others, to find that gave rise to the landslide. Likewise, different engineering solutions are proposed, taking into account the magnitude of these landslides and in general, the whole area that has been affected. In this work find with the support of several thematic maps that the main trigger of the landslide are the high rates of rainfall that erodes the soil making that various types of material. Furthermore of this also are the local geomorphological characteristics, the active tectonics of the Servita Fault, and the high slopes contribute to a large extent to increase this geotechnical inconvenience to the highway and the households of the people of the Vereda Servitá.