Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
SCOUR AT THE BASE OF FLIP-BUCKET SPILLWAYS
Scouring in rocky bed downstream of spillway with flip-bucket is complicated due to the complex hydraulic and geological conditions. The estimation of various parameters determining the erosion resistance of the rock is difficult. The prediction of the local scour downstream of spillways can be made by means of oversimplified equations. These equations are sufficiently good for assessment of initial scour geometry to ensure the safety of dam as well as its abutments. Many researchers have developed empirical formulae considering various hydraulic as well as geological parameters. In the present study, extensive experimental results were collected and analyzed in order to investigate the effect of different parameters on scour downstream of a flip bucket spillway. It was found that the scour parameters are functions of downstream Froude number (discharge parameter), ratio of head to tail water depth, ratio of radius of flip bucket to tail water depth, ratio of sediment mean size to tail water depth and lip angle of the bucket. The functional relationships are expressed by dimensionless equations.
SCOUR AT THE BASE OF FLIP-BUCKET SPILLWAYS
Scouring in rocky bed downstream of spillway with flip-bucket is complicated due to the complex hydraulic and geological conditions. The estimation of various parameters determining the erosion resistance of the rock is difficult. The prediction of the local scour downstream of spillways can be made by means of oversimplified equations. These equations are sufficiently good for assessment of initial scour geometry to ensure the safety of dam as well as its abutments. Many researchers have developed empirical formulae considering various hydraulic as well as geological parameters. In the present study, extensive experimental results were collected and analyzed in order to investigate the effect of different parameters on scour downstream of a flip bucket spillway. It was found that the scour parameters are functions of downstream Froude number (discharge parameter), ratio of head to tail water depth, ratio of radius of flip bucket to tail water depth, ratio of sediment mean size to tail water depth and lip angle of the bucket. The functional relationships are expressed by dimensionless equations.
SCOUR AT THE BASE OF FLIP-BUCKET SPILLWAYS
Azmathullah, H. Md. (Autor:in) / Deo, M. C. (Autor:in) / Bhajantri, M. R. (Autor:in) / Deolalikar, P. B. (Autor:in)
ISH Journal of Hydraulic Engineering ; 10 ; 121-129
01.01.2004
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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