Analysis of the suitability of soil erodibility indicators based on geotechnical parameters

Abstract

Erosive processes are capable of causing changes in the scenario in which they operate, causing material losses and fatalities. This study has an important role since it can help in predicting soil behavior, and mapping areas of risk with greater precision, preventing people from establishing themselves in those areas. A gully was selected in the Litorânea Avenue, São Luís (MA). Three samples were collected at different levels (0m, 1.5m, 3m) to perform grain size, moisture content, liquidity limit and plasticity limits. The literature presents proposals that relate the soil physical indexes and the soil susceptibility to erosion. By making this correlation, the results found that some criteria predicted well the behavior of the soil while others made incorrect predictions. Because of the absence of a database, and the adequacy analysis is still going on, making use of these methods requires great care.