Risque d'érosion externe des digues maritimes en remblai : principaux résultats du projet Polder2C's, essais grandeur nature, campagnes de reconnaissances et modélisations numériques
Alleon, C.; Nerincx, N.; Peeters, P.; De Backer, G.; Sergent, P.; Fauchard, C.; Bennabi, A.; Smaoui, H.; Kaidi, S. (2024).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 In: (2024). 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. [S.n.]: [s.l.]. , more |
| Available in | Authors | | Document type: Conference paper
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| Keywords | Hydraulic structures > Dikes, shores and other flood defenses > Erosion protection
Hydraulic structures > Dikes, shores and other flood defenses > Failure mechanisms
In-situ measurements
Numerical modelling
| | Author keywords | dikes, external erosion, Polder2C’s, surveys, modelling |
| Authors | | Top | - Alleon, C.
- Nerincx, N.
- Peeters, P., more
| - De Backer, G., more
- Sergent, P.
- Fauchard, C.
| - Bennabi, A.
- Smaoui, H.
- Kaidi, S.
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| Abstract | 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]. |
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