Estudo da descarga de sedimentos transportados em três rios da bacia hidrográfica do Rio Mourão

Abstract

In this work was presented the study of sediment transport in the basin of river Mourao, where three sampling sections were established. The section 1 is located in the Campo river in Campo Mourão, the section 2 is located in Mourao River on the boundary between the counties of Campo Mourão and Luiziana and section 3 on the Sem Passo river in the county of Luiziana. To obtain the results from the discharge of sediment were performed granulometric analyzes of the sediment of the riverbed in the study. To calculate the discharge of bottom sediments were used methods Einstein (1942) and Meyer, Peter Duboys and Zeller (1963). To calculate the suspended sediment discharge were used methods of Einstein (1942) with Peter-Meyer, Duboys and Zeller (1963), Yang (1973) and Righetto (1998), and estimate them experimentally by testing solids totals and in suspension. The method Duboys and Zeller (1963) can be used only in section 1, considering the perimeter of this section be lower than in the other sections enabling the calculation, where the values found for the perimeter was 5,761 m, 9,569 me 12,332 m for sections 1, 2 and 3 respectively. To understand the behavior of the sediment transport, was calculated the Froude number, which ranked as the flow subcritical or fluvial, Fr <1, featuring backwater areas with relatively slow flow precluding the calculation method for the Duboys and Zeller (1963).