Modélisation du transport solide à l'échelle de la crue en utilisant le logiciel ( HECRAS-HECHMS ) cas d'Oued Abiod

Abstract

The hydrological study of erosion and sediment transport carried on the watershed of OuedLabiod, for improving the understanding of the phenomenon and its estimate. The watershed of OuedLaboid covers an area of 1,300 km² and almost its totality is located in a semi- arid environment. After determining all parameters geomorphological, geological, hydrological and climatic of sub watershed forming the basin, we passed to the quantitative simulation of liquid flow rates and sediment loads in these sub-basins. Using the data of precipitation stations(Ichmoul ,Tkout et Tefefele,) whichguaranteed given the maximum daily rainfall and hydrometric station ( Mechounche )ensuring the observed flow, to insert in the universal hydrological model was used to calculate the various flood hydrograph for a specific event, and sediment after stalling and validated the model .