CONTRIBUTION A L’ETUDE DU TRANSPORT SOLIDE EN ALGERIE DU NORD
Journal Title: Larhyss Journal - Year 2015, Vol 24, Issue 24
Abstract
Nowadays, erosion phenomenon is becoming increasingly important in the Algerian catchment basins. Hydric erosion is the most extensive form in the Algerian basins. It depends on the soils resistance and climate aggressivity. Erosion intensity occurs mainly when there are floods, where a significant amount of sediments is being generated by the basins. Erosion, sediment transport and sedimentation are the cause of the degradation of agricultural soils, siltation of dams and damaged substructures the costs are considerable. In Algeria, for instance, the hydro technical-structures development studies come up against the problem of the lack of data relevant to sediment transport in order to assess its importance. This leads the engineer to use the rule-of-thumb techniques currently in existence for assessing the solid quantities transported annually by water courses during sizing designs. For this, we considered necessary to improve our previous relation along with new data in order to calculate the sediment transport, on annual scale, based on three parameters available at at all catchment basins controlled by hydrometric stations, i.e., runoff, pluviometry and surface area. To give more meaning to the model, we used data from 67 Algerian stations and dams. After using the data of 53 measuring sites for calibrating the model, the validation was performed by taking 14 stations into account. The model reliability was done using Nash criterion. For linearity purposes of the relation, the variables were subject to logarithmic transformation. All Correlation coefficients are significant at the 95% threshold along with a determination coefficient equal to 0,77%. The Nash criterion for model calibration and validation is 77% and 88% respectively.
Authors and Affiliations
MEDDI M. | École Nationale Supérieure d’Hydraulique de Blida, LGEE, ALGERIA
Keywords
Related Articles
- EP ID EP15188
- DOI -
- Views 337
- Downloads 17
MODÉLISATION EMPIRIQUE DE LA TRANSMISSIVITÉ DES AQUIFÈRES DE SOCLE DE COTE D’IVOIRE EMPIRICAL TRANSMISSIVITY MODELING OF PEDESTRAL AQUIFER OF IVORY COAST
The objective of this study is modeling the transmissivity of the hard rock aquifers from the specific capacity. The areas tested used for this study are the region of N'zi-Comoé (Paleoproterozoic domain) and Guiglo-D...
EFFET DES IONS NITRITES SUR LA REACTIVITE DE LA TYROSINE AU COURS DE LA CHLORATION D’UNE EAU SUPERFICIELLE ALGERIENNE
The objective of this study is to contribute to the knowledge of the reactivity of chlorine in the form of sodium hypochlorite on organic matter in form of aromatic amino acid (tyrosine) dissolved in surface water (Ain...
L'ENSABLEMENT DANS LA PLAINE DE TAFILALET (SUD-EST DU MAROC)
The resurgence of silting in plain Tafilalet phenomena is much related to increasing human pressure to technological changes accompanying a little rational management of resources and unfavorable weather conditions. I...
ETUDE DE LA VARIABILITE SAISONNIERE ET INTERANNUELLE DU NIVEAU MOYEN DE LA MER MEDITERRANEE
This paper summarizes the study of the Mediterranean mean sea level variability and its representation by a mathematical model. The singular spectrum analysis technique (SSA) is applied to the series of mean sea level...
DYNAMIQUE DE L’OCCUPATION DES SOLS DE LA COMMUNE URBAINE D’ATTÉCOUBÉ (CÔTE D’IVOIRE)
The objective of this study is analyzing the land use pattern of Attécoubé in order to be aware of the evolution of his area. Attécoubé is a little sector in the city of Abidjan lying north of Plateau, downtown Abi...