{"id":110692,"date":"2025-10-29T08:00:29","date_gmt":"2025-10-29T07:00:29","guid":{"rendered":"https:\/\/www.maccaferri.com\/fr\/success-stories\/travaux-dedification-dune-digue-de-defense-contre-la-mer\/"},"modified":"2026-02-16T15:39:39","modified_gmt":"2026-02-16T14:39:39","slug":"travaux-dedification-dune-digue-de-defense-contre-la-mer","status":"publish","type":"stories","link":"https:\/\/www.maccaferri.com\/fr\/exemples-de-r\u00e9ussites\/travaux-dedification-dune-digue-de-defense-contre-la-mer\/","title":{"rendered":"TRAVAUX D’\u00c9DIFICATION D’UNE DIGUE DE D\u00c9FENSE CONTRE LA MER"},"content":{"rendered":"
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Challenge<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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La temp\u00eate Xynthia du 28 f\u00e9vrier 2010 a lourdement touch\u00e9 la c\u00f4te Atlantique, g\u00e9n\u00e9rant une submersion marine des terrains urbanis\u00e9s et le d\u00e9c\u00e8s de plusieurs personnes. Le village des Boucholeurs \u00e0 Ch\u00e2telaillon \u2013 Plage (17) fait partie des communes sinistr\u00e9es et sa digue de protection a rompu durant l\u2019\u00e9v\u00e8nement.<\/p>\n

En d\u00e9cembre 2011, dans le cadre du Programme d\u2019Actions et de Pr\u00e9vention des Inondations (PAPI) de la baie d\u2019Yves, un projet de d\u00e9fense de la c\u00f4te a \u00e9t\u00e9 \u00e9tabli. Il consiste en la remise en \u00e9tat et le renforcement de la digue existante et en la cr\u00e9ation d\u2019une digue de retrait dans la R\u00e9serve Naturelle Nationale du marais d\u2019Yves.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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Solution<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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La digue de retrait s\u2019\u00e9tend sur un lin\u00e9aire de 3200m entre l\u2019anse des Boucholeurs et la pointe du Rocher (commune d\u2019Yves). L\u2019\u00e9tude a permis de d\u00e9couper l\u2019ouvrage en 11 tron\u00e7ons pr\u00e9sentant 9 profils de conception diff\u00e9rents permettant de pr\u00e9venir contre des \u00e9v\u00e8nements climatiques de p\u00e9riode de retour de type Xynthia.<\/p>\n

Le groupement titulaire du march\u00e9 a recherch\u00e9 \u00e0 optimiser son offre technique et financi\u00e8re en s\u2019appuyant notamment sur la comp\u00e9tence technique de Maccaferri dans les techniques de protection anti-\u00e9rosion. <\/p>\n

C\u2019est ainsi que pour les tron\u00e7ons 6 et 7 d\u2019une longueur de 1225m, o\u00f9 la hauteur d\u2019agitation est de 70cm, une solution en Matelas Reno Plus de 30cm d\u2019\u00e9paisseur a \u00e9t\u00e9 propos\u00e9e en variante \u00e0 la protection en enrochements 300-1000kg de 1m20 d\u2019\u00e9paisseur.<\/p>\n

Le Matelas Reno Plus est un matelas gabion constitu\u00e9 de double diaphragmes obtenus par pliage de la nappe de fond associ\u00e9s \u00e0 la disposition de tirants X-ties reliant la base au couvercle \u00e0 raison de 1u\/m\u00b2.<\/p>\n

Pour les talus c\u00f4t\u00e9 oc\u00e9an soumis \u00e0 une houle faible o\u00f9 un g\u00e9osynth\u00e9tique anti-\u00e9rosif \u00e9tait pr\u00e9vu, Maccaferri a propos\u00e9 la mise en place d\u2019un Macmat R1035 : il s\u2019agit de l\u2019association d\u2019un g\u00e9omatelas en polypropyl\u00e8ne et d\u2019une g\u00e9ogrille de renfort en polyester ayant une r\u00e9sistance \u00e0 la traction de 35kN\/, permettant de retenir de fa\u00e7on p\u00e9renne la terre v\u00e9g\u00e9tale sur les talus de la digue et offrant une protection du talus face aux sollicitations hydrauliques. <\/p>\n

Ce m\u00eame produit a \u00e9t\u00e9 utilis\u00e9 pour les parements c\u00f4t\u00e9 terres pour lesquels un dispositif accroche terre \u00e9tait pr\u00e9vu.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>

Used Products<\/h2>
\"Matelas<\/div>
Matelas Reno Plus<\/h6>RenoMac PlusS’appuyant sur le succ\u00e8s du Matelas Reno Plus, le RenoMac Plus offre les m\u00eames avantages en termes de durabilit\u00e9 et de performan<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div>
\"MacMat<\/div>
MacMat R<\/h6>Les g\u00e9omatelas renforc\u00e9s sont des g\u00e9ocomposites dont la structure tridimensionnelle peut \u00eatre coupl\u00e9e soit avec un grillage m\u00e9tallique \u00e0 double torsio<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

La digue de retrait s\u2019\u00e9tend sur un lin\u00e9aire de 3200m entre l\u2019anse des Boucholeurs et la pointe du Rocher (commune d\u2019Yves). L\u2019\u00e9tude a permis<\/p>\n","protected":false},"featured_media":117117,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-110692","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":[113624,113681],"applications":[103511,103511],"solutions":[103673],"sectors":[103466]},"yoast_head":"\nTRAVAUX D'\u00c9DIFICATION D'UNE DIGUE DE D\u00c9FENSE CONTRE LA MER - Maccaferri France<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez nos r\u00e9ussites : TRAVAUX D'\u00c9DIFICATION D'UNE DIGUE DE D\u00c9FENSE CONTRE LA MER. 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