Risque d'érosion externe des digues maritimes en remblai : principaux résultats du projet Polder2C's, essais grandeur nature, campagnes de reconnaissances et modélisations numériques, in: Colloque Digues 2024 - Systèmes et ouvrages de protection contre les inondations d'origines maritimes et fluviales. État des lieux, avancées, innovations et perspectives, Aix-en-Provence. pp. [1-11]. https://dx.doi.org/10.5281/zenodo.10619686","BEntID":391079,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":", in: Colloque Digues 2024 - Systèmes et ouvrages de protection contre les inondations d'origines maritimes et fluviales. État des lieux, avancées, innovations et perspectives, Aix-en-Provence. pp. [1-11]. https://dx.doi.org/10.5281/zenodo.10619686","DocTypID":17,"DocType":"Book chapters","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Alleon, C.; Nerincx, N.; Peeters, P.; De Backer, G.; Sergent, P.; Fauchard, C.; Bennabi, A.; Smaoui, H.; Kaidi, S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Alleon, C. et al.","Englishabstract":"The Polder2Cs project started in December 2019 with 12 (now 13) partners willing to increase the knowledge about external erosion of maritime and estuary dikes. Thanks to a dedicated playground, large scale overflow and overtopping experiments have been carried out on the Hedwige and Prosper polder, at the Belgian – Netherlands border, along the river Scheldt.
Meanwhile, several partners developed numerical models aiming to understand the physical phenomenon. Those modelling exercises are supported by extensive geotechnical and geophysical investigations along with laboratory tests.
The paper presents the conclusions of different experiments carried on site and in laboratory, and discusses links between site, lab tests and models about external erosion of dikes. An opening on a simplistic numerical tool to assess external erosion failure under overtopping is finally presented.
This project has received funding from the Interreg 2 Seas programme 2014-2020 co-funded by the European Regional Development Fund under subsidy contract No [2S07-023].","AbstractOtherLang":"Le projet Polder2C’s a été lancé en décembre 2019 par 12 – aujourd’hui 13 – partenaires avec pour ambition principale d’améliorer la connaissance du risque d’érosion externe pour les digues estuariennes et maritimes en remblai. Grâce à une zone dédiée, des essais grandeur nature de surverse et de franchissement ont été réalisés sur les digues du polder Hedwige et Prosper, à la frontière belgo—néerlandaise, le long de l’Escaut.
En parallèle, plusieurs partenaires ont développé des modèles numériques de différentes natures pour décrire et comprendre les phénomènes en jeu. Ces modélisations se sont appuyées sur des campagnes de reconnaissances géotechniques, géophysiques, et des essais de laboratoire, qui ont été conduits dans le cadre du projet.
Le papier présente des éléments de conclusion issus des différentes campagnes menées et propose des liens entre les essais in situ, les essais de laboratoire et les modélisations, ainsi qu’une réflexion globale sur la résistance à l’érosion externe des remblais. Une introduction à un outil numérique pour estimer le risque d’érosion externe de digues soumises au risque de franchissement, développé dans le cadre du projet, est finalement proposée.
Ce projet a bénéficié du soutien financier du programme 2014-2020 d’Interreg2mers, co-financé par le Fond Régional Européen de Développement sous le contrat de subvention [2S07-023].","BibLvlCode":"AM","StandardTitle":"
Risque d'érosion externe des digues maritimes en remblai : principaux résultats du projet Polder2C's, essais grandeur nature, campagnes de reconnaissances et modélisations numériques","OrigTitleLangCode":"fr","OrigTitleLangCodeExtended":"fre","OrigTitleLangID":22,"DateLastModified":{"date":"2026-05-21 01:51:34.879940","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"dikes, external erosion, Polder2C’s, surveys, modelling","OtherDescriptors":null,"Notes":null,"AnaPub":2024,"MonPub":null,"DateUpdate":"2024-07-18","DateCreate":"2024-07-18","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0,"DOI":"10.5281/zenodo.10619686"},"refs":null,"anarec":{"AnaID":393293,"PubliDate":2024,"Pagination":"[1-11]","XtraPublOfAnaID":null,"ISBN":null,"Volume":null,"Issue":null,"BRefMon":393290,"BRefMonRR":"(2024). 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