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Titre :
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Protective spur dike for scour mitigation of existing spur dikes (2012)
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Auteurs :
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Hojat Karamia, Auteur ;
Abdollah Ardeshir, Auteur ;
Kourosh Behzadian, Auteur
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Type de document :
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Article : texte imprimé
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Dans :
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Journal of hydraulic research (Vol. 49 N° 6, Novembre/Décembre 2011)
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Article en page(s) :
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pp. 809-813
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Note générale :
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Hydraulique
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Langues :
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Anglais
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Index. décimale :
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627 (Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques)
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Tags :
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Experimentation Flow pattern Open channel Protective spur dike Scour countermeasure
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Résumé :
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To alleviate the scour depth around a series of existing spur dikes (SDs), a protective SD located upstream of the first was experimentally investigated. To determine the optimal design parameters, various values, lengths, angles and the spacing of a protective SDs were experimentally tested under different clear-water conditions in a straight river reach and a fixed flow depth. To investigate the behaviour of the flow field around the SDs, acoustic Doppler velocimeter was used to measure instantaneous velocity components on a rough rigid bed. The results indicate that a properly designed protective SD is able to decrease the average of the maximum scour depth around the main SDs. The optimum design parameters of a protective SD are recommended for each length for a particular experiment.
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DEWEY :
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627
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ISSN :
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0022-1686
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En ligne :
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http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.625166
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