{"id":9883,"date":"2023-03-01T16:44:52","date_gmt":"2023-03-01T15:44:52","guid":{"rendered":"https:\/\/maccaferri-stage.softecspa.it\/ca\/success-stories\/securisation-du-barrage-du-planas-2\/"},"modified":"2023-03-01T16:44:52","modified_gmt":"2023-03-01T15:44:52","slug":"securisation-du-barrage-du-planas-2","status":"publish","type":"stories","link":"https:\/\/maccaferri-stage.softecspa.it\/ca\/fr\/success-stories\/securisation-du-barrage-du-planas-2\/","title":{"rendered":"S\u00c9CURISATION DU BARRAGE DU PLANAS"},"content":{"rendered":"
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Problem<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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Le Syndicat Mixte pour l\u2019Am\u00e9nagement des Bassins Versants du Gard Rhodanien a mandat\u00e9 ISL Ing\u00e9nierie dans le but de r\u00e9aliser une mission de ma\u00eetrise d\u2019oeuvre partielle pour la s\u00e9curisation du barrage. Suite aux \u00e9tudes pr\u00e9liminaires et \u00e0 l\u2019analyse co\u00fbts-b\u00e9n\u00e9fices, le choix du Ma\u00eetre d\u2019ouvrage s\u2019est port\u00e9 sur la solution de s\u00e9curisation du tron\u00e7on 3 du barrage par une rehausse de la digue actuelle. <\/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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Le choix d\u2019une rehausse de la digue actuelle par l\u2019aval est motiv\u00e9 d\u2019une part par la r\u00e9alisation des travaux \u00e0 l\u2019abri de la digue existante en cas de crue et d\u2019autre part par la mise en place d\u2019un g\u00e9odrain permettant de s\u2019affranchir du risque d\u2019\u00e9rosion interne dans son corps. En cas de d\u00e9faut d\u2019\u00e9tanch\u00e9it\u00e9 du corps de digue existant, le g\u00e9odrain permet de filtrer et drainer les \u00e9coulements et d\u2019emp\u00eacher la migration de fine \u00e0 l\u2019origine des ph\u00e9nom\u00e8nes d\u2019\u00e9rosion interne. Il est install\u00e9 sur le talus aval de la digue existante puis d\u00e9bouche dans les enrochements \u00e0 l\u2019aval en passant sous la recharge en remblai tout venant. C'est le g\u00e9odrain MacDrain W1081 fabriqu\u00e9 par Maccaferri qui a \u00e9t\u00e9 install\u00e9 : son r\u00f4le est d'\u00e9viter la mise en charge du remblai de la retenue en cr\u00e9ant un drainage \u00e0 l\u2019interface entre l\u2019existant et la rehausse. Lors de la phase de chantier, le g\u00e9ocomposite est d\u00e9roul\u00e9 dans le sens de la pente et il est maintenu sur le talus gr\u00e2ce \u00e0 la r\u00e9alisation d'une tranch\u00e9e d'ancrage en t\u00eate. Lat\u00e9ralement, le g\u00e9otextile d\u00e9passe de l'\u00e2me drainante, ce qui permet d'assurer un recouvrement du filtre tout en pla\u00e7ant les \u00e2mes drainantes bord \u00e0 bord pour une parfaite continuit\u00e9 du g\u00e9ocomposite de drainage.   <\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>","protected":false},"excerpt":{"rendered":"

Le choix d\u2019une rehausse de la digue actuelle par l\u2019aval est motiv\u00e9 d\u2019une part par la r\u00e9alisation des travaux \u00e0 l\u2019abri de la digue existante en cas <\/p>\n","protected":false},"featured_media":17049,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-9883","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":null,"applications":null,"solutions":null,"sectors":null},"yoast_head":"\nS\u00c9CURISATION DU BARRAGE DU PLANAS - Maccaferri Canada<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/maccaferri-stage.softecspa.it\/ca\/fr\/success-stories\/securisation-du-barrage-du-planas-2\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u00c9CURISATION DU BARRAGE DU PLANAS - 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