EVOLUTION OF THE CONCENTRATIONS AND THE SEDIMENT DISCHARGE ACCORDING TO THE LIQUID FLOWS IN THE WATERSHED OF THE WADI BELLAH TIPAZA
Journal Title: Larhyss Journal - Year 2015, Vol 21, Issue 21
Abstract
The sediment transport is its importance, a major problem (agricultural land, siltation of selected …). In Algeria, it is measured in the watershed gauging stations for almost all episodes of flow. Generally, it is limited to the suspension flow. Our study is based on the watershed of wadi Bellah, Algeria. It is located in semi-arid. The data acquired by the station Pont RN 11 (sediment concentrations C (g/l) and liquid flow rates Ql (m3/s)) and used for quantification of daily transport in suspension were analyzed to determine their reliability and validity based on the evolution of Qs = C.Ql and Ql. This data is performed by the National Water Resources Agency (ANRH, Algeria) between 1974 and 1999. Generally, best results are obtained by an equation of type: Qs = a.Qlb with, Qs sediment discharge (Kg/s), Ql, average daily flow (m3/s) and a, b are empirical coefficients. And the results show that the value of the average specific degradation is comparable to that found for other regions in similar hydrological regime.
Authors and Affiliations
ELAHCENE O. | University Ziane Achour of Djelfa, REMINI B. | University of Blida, TERFOUS A. | INSA of Strasbourg, France, GHENAIM A. | INSA of Strasbourg, France
Keywords
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