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Reducing erosion of earthen levees using engineered flood wall surface / Chung R. Song in Journal of geotechnical and geoenvironmental engineering, Vol. 137 N° 10 (Octobre 2011) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 137 N° 10 (Octobre 2011) . - pp. 874-881 Titre : Reducing erosion of earthen levees using engineered flood wall surface Type de document : texte imprimé Auteurs : Chung R. Song, Auteur ; Jinwon Kim, Auteur ; Ge Wang, Auteur Année de publication : 2012 Article en page(s) : pp. 874-881 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Erosion  Levee  Hydrodynamics  Overtopping  UMETB  Louisiana Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Erosion was one of the major causes for the failure of New Orleans levee system during Hurricane Katrina. Protection of flood walls from erosion failure can be achieved in many different ways. This study consisted of experimental research to develop engineered flood wall surfaces that can reduce the erosion energy of the plunging water before the water hits the levee surface, so that the flood protection system becomes more resilient. Test results were compared to hydrodynamics simulation results by using FLOW3D. The results revealed that the erosion resistance of levees can be substantially reduced by providing protective structures at the surface of the flood walls. An effectively designed protective structure could reduce the erosion depth as much as 40% and extend the erosion time as much as 400%. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i10/p874_s1?isAuthorized=no [article] Reducing erosion of earthen levees using engineered flood wall surface [texte imprimé] / Chung R. Song, Auteur ; Jinwon Kim, Auteur ; Ge Wang, Auteur . - 2012 . - pp. 874-881. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 137 N° 10 (Octobre 2011) . - pp. 874-881 Mots-clés : Erosion  Levee  Hydrodynamics  Overtopping  UMETB  Louisiana Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Erosion was one of the major causes for the failure of New Orleans levee system during Hurricane Katrina. Protection of flood walls from erosion failure can be achieved in many different ways. This study consisted of experimental research to develop engineered flood wall surfaces that can reduce the erosion energy of the plunging water before the water hits the levee surface, so that the flood protection system becomes more resilient. Test results were compared to hydrodynamics simulation results by using FLOW3D. The results revealed that the erosion resistance of levees can be substantially reduced by providing protective structures at the surface of the flood walls. An effectively designed protective structure could reduce the erosion depth as much as 40% and extend the erosion time as much as 400%. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i10/p874_s1?isAuthorized=no