Erodibilidade e tensão crítica de cisalhamento no canal de drenagem de estrada rural não pavimentada
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Data
2015
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Resumo
The erosion in unpaved roads associated with the runoff generates a great environmental
impact, being the main cause of flooding, water contamination and alteration of aquatic
fauna, among others. It is necessary to develop strategies for prevention and control. For
this, obtaining reliable indices of soil resistance to erosion is required. In this context, the
aim of this study was to determine the indices of erodibility and critical shear stress in the
channel of an unpaved road implanted in a Red-Yellow Latosol. Study was conducted on
an unpaved road in Viçosa-MG, Brazil, which presented problems of erosion, using a flow
simulator for direct determination of field. Erodibility and critical shear stress data were
obtained by applying model identity test.The erodibility value determined was 0.0044 g
cm -2 min -1 Pa -1 , and its associated confidence interval with 95% probability was 0.0035 to
0.0053 g cm -2 min -1 Pa -1 . The critical shear stress determined was 7.61 Pa.
Descrição
Palavras-chave
Erosão hídrica, Conservação de solo e água, Modelagem, Processo erosivo, Water erosion, Erosion processes, Modeling, Soil and water conservation
Citação
ENRIQUEZ, Adriana G.; SILVA, Danilo P. da; PRUSKI, Fernando F.; GRIEBELER, Nori P.; CECON, Paulo R. Erodibilidade e tensão crítica de cisalhamento no canal de drenagem de estrada rural não pavimentada. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 19, n. 2, p. 160-165, 2015.