Estudo da erodibilidade e parÃmetros geotÃcnicos de um solo em processo erosivo

AUTOR(ES)

FabÃola de Souza Gomes

DATA DE PUBLICAÇÃO

2001

RESUMO

This work has as objective main the study of the geothecnical properties of involved ground in the erosive process in the coastal region Cabo de Santo Agostinho/PE, about 41km of Recife. The region is submitted to a rainy tropical climate with dry summer (- the KÃppen). Pedologycal, the area is of domain of Latossoil. The geologic profile is composed for sediments of the Formation Barriers, with thickness of the order of 5m, superjacent to one granite ground residual. The superior formation possess two distinct horizons: a superficial layer, of the order of 1m of thickness, consisting of an arenaceous clay of yellowish color; followed for a consisting layer of a silty sand of pink color. The ground of the superjacent formation consists of a silty sand. To evaluate the potential of erodibility of ground a campaign of laboratory assays was carried through, consisting of: assays of characterization, assays to evaluate the mechanical and hydraulically properties of ground (oedometricy, direct shear and permeability) and assays to evaluate the erodibility of the ground (fast dispersion, puncture of needle, desegregation, inderbtzen, MCT and infiltration). The erodibility assays, in itself, had not been enough to evaluate the degree of erodibility of ground, needing a joint analysis with the mechanical and hydraulically properties. The Inderbtzen, even so if presents compatible with the phenomenon of superficial hydrics erosion, the gotten parameters are not enough to evaluate the degree of erodibility of one ground, or either, it lacks a classification criterion

ASSUNTO(S)

erosÃo (engenharia civil) mecÃnica de solos (engenharia civil) â teses engenharia civil

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