Avaliação da Erodibilidade de um Talude Localizado no Município de Jaboatão dos Guararapes PE

Abstract

: The problems related to the use and occupation of the soil in an irregular way have brought several socio-environmental impacts in urban areas, being these of material losses and deaths. Therefore, this work aimed to study the erosive potential of the soil before applying a supercial protection using means of gelpolymer on a hillside in the municipality of Jaboatão dos Guararapes – PE. The field stage it consisted of geological assessment, geometrical survey of the studied slope and the collection of deformed and undeformed samples for laboratory tests. In the laboratory step, physical characterization tests were carried out (granulometry with and without use of a deflocculant, specific mass of the grains, consistency limits), the dispersion evaluation through the crumb test and the comparative sedimentometric test, and the erodibility evaluation through of the Indebitzen test. The exposition are residual soils of granitic rocks, classified as sand clayey (SC). As dispersivity, for both tests, the soil was classified as non-dispersive. Finally, considering the Bastos (1999) criterion, used by Lafayette (2006) and Meira (2008), the erodibility to the soil in natural and flooded humidity for 24h was, respectively, 0.006 g/cm²/min and 0.0038 g/cm²/min, presenting intermediate erobility.