SUSCETIBILIDADE AO MOVIMENTO DE MASSA NO PERÍMETRO URBANO DO MUNICÍPIO DE CHAPECÓ (SC)

Susceptibility to mass movement in the urban perimeter of Chapecó Municipality (SC)

Abstract

This article has the purpose of presenting the areas of susceptibility to mass movement in the urban perimeter of the municipality of Chapecó-SC, based on soil studies conducted with geological and geomorphological criteria. Soil laboratory analyzes provided the physical and geological properties of the soil. The results identified the soils present in the study area, being, 71% of Latossolos, 23% of Nitossolos and 6% of Cambisols. The soil infiltration test developed with the infiltrator rings method assists in drainage projects, since the municipality has been presenting in recent years an increase in annual precipitation of rainfall and has shown that the basic speed of infiltration of the soil among all the evaluated points ranged from 64 mm / h to 466 mm / h. The elaboration of thematic maps related to altimetry, slope direction and slope provided important information for the elaboration of the natural and saturated soil safety factor maps, with and without vegetation. These maps subsidize management actions and urban planning, identifying the possible areas of risk, since most of them have not yet been occupied and are within the urban perimeter of the municipality.