LE TRANSPORT SOLIDE DANS LE BASSIN VERSANT DE L’OUED ISSER IMPACT SUR L’ENVASEMENT DU BARRAGE DE BENI AMRANE (ALGERIE)
Journal Title: Larhyss Journal - Year 2006, Vol 5, Issue 5
Abstract
Les volumes les plus importants en transport solide se concentrent Durant la priode allant de Dcembre Mars (parfois mme jusqu’ avril). Le charriage, dans le cas o l’on prendrait en compte le coefficient correctif de rugosit dans le lit de l’Oued, est estim 32 % en moyenne de la suspension. La dtermination de l’rosion spcifique annuelle, sur toute la priode d’tude, a fait sortir les annes qui ont contribu d’une manire potentielle au comblement de la retenue de Bni Amrane l’aval de la station de Lakhdaria. Ce mme facteur a t dduit partir de la formule de Tixeront. Les rsultats obtenus se rapprochent assez bien de ceux que nous avons calculs. La recherche d’une corrlation entre le taux d’rosion spcifique calcul et quelques paramtres hydro climatiques tels que la pluie annuelle, l’indice climatique de Fournier, le dbit maximum annuel et la lame ruissele a permis de trouver des relations hautement significatives. Les rsultats de la quantification du transport solide semblent trs cohrents avec les mesures directes de l’envasement dans la retenue de Bni Amrane. REFERENCES BIBLIOGRAPHIQUES.
Authors and Affiliations
B. LARFI| MaÅtre assistante, DÇpartement de GÇnie Rural- Institut national d’Agronomie, AlgÇrie, B. REMINI| Professeur, DÇpartement de GÇnie Rural, UniversitÇ Saad Dahlab de Blida, Chercheur au laboratoire LARHYSS, Biskra, AlgÇrie
Keywords
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