{"id":114871,"date":"2025-12-11T16:51:43","date_gmt":"2025-12-11T15:51:43","guid":{"rendered":"https:\/\/www.maccaferri.com\/fr\/success-stories\/securisation-de-la-digue-rive-gauche-de-larc-73\/"},"modified":"2026-02-16T15:39:58","modified_gmt":"2026-02-16T14:39:58","slug":"securisation-de-la-digue-rive-gauche-de-larc-73","status":"publish","type":"stories","link":"https:\/\/www.maccaferri.com\/fr\/exemples-de-r\u00e9ussites\/securisation-de-la-digue-rive-gauche-de-larc-73\/","title":{"rendered":"S\u00e9curisation de la digue rive gauche de l’Arc, 73"},"content":{"rendered":"
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    \"\"<\/div>\n <\/div>\n <\/div>\n
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    Vue du g\u00e9otextile de filtration\/s\u00e9paration Maccaferri TEX 40.1 certifi\u00e9 Asqual<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    \"\"<\/div>\n <\/div>\n <\/div>\n
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    Matelas Reno\u00ae Plus mis en place avec X-ties<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    \"\"<\/div>\n <\/div>\n <\/div>\n
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    Remplissage des Matelas Reno\u00ae Plus de bas en haut<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    \"\"<\/div>\n <\/div>\n <\/div>\n
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    Matelas Reno\u00ae Plus de 23 cm d'\u00e9paisseur<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    Adaptabilit\u00e9 des Matelas Reno\u00ae Plus au terrain<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    Coupe type du chantier<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <\/div>\n <\/div>

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    Challenge<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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    La digue de l’Arc \u00e0 Chamousset se situe juste en amont de la confluence Arc- Is\u00e8re. L’\u00e9tude de danger r\u00e9alis\u00e9e par Artelia a mis en \u00e9vidence une mont\u00e9e des eaux importantes dans la zone en cas de rupture de la digue. Les scenarios les plus probables de rupture sont li\u00e9s \u00e0 une \u00e9rosion interne ou par surverse. Le SISARC a donc d\u00e9cid\u00e9 de conforter et de s\u00e9curiser la digue en rive gauche de l’Arc sur un lin\u00e9aire de 1720m. Pour pr\u00e9venir de l’\u00e9rosion interne, un \u00e9paississement de digue a \u00e9t\u00e9 retenu c\u00f4t\u00e9 aval sur l’ensemble du lin\u00e9aire. Pour la protection \u00e0 la surverse, il a \u00e9t\u00e9 d\u00e9cid\u00e9 de renforcer une zone de 842m contre une crue de p\u00e9riode de retour de 200 ans avec 2 techniques diff\u00e9rentes selon la hauteur d’eau au dessus de la cr\u00eate de la digue. En effet, le mod\u00e8le hydraulique a mis en \u00e9vidence une lame d’eau de 15cm sur les 300m lin\u00e9aire situ\u00e9 en amont (T3) et une lame d’eau de 40cm pour les 542m aval (T4). Le MOE a ainsi d\u00e9cid\u00e9 de traiter T3 avec un g\u00e9omatelas recouvert de terre v\u00e9g\u00e9tale et T4 avec un rev\u00eatement en gabions. Pour les deux tron\u00e7ons, un bassin \/ foss\u00e9 de collecte en gabions a \u00e9t\u00e9 retenu pour dissiper l’\u00e9nergie et \u00e9vacuer l’\u00e9coulement vers un exutoire naturel.<\/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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    L’entreprise Carron a sous-trait\u00e9 le dimensionnement, la fourniture et la mise en \u0153uvre de la protection \u00e0 la surverse en gabions \u00e0 l’entreprise Maccaferri. Compte tenu de la lame d’eau importante sur un coursier inclin\u00e9 \u00e0 2H:1V, la solution technique propos\u00e9e par Maccaferri est un rev\u00eatement en matelas Reno\u00ae Plus de 23cm d’\u00e9paisseur dimensionn\u00e9 \u00e0 l’aide du logiciel interne MACRA qui permet d’analyser le comportement de l’\u00e9coulement sur le d\u00e9versoir, d’\u00e9valuer les sollicitations hydrauliques sur le rev\u00eatement et la longueur n\u00e9cessaire du bassin de dissipation. Un g\u00e9otextile de filtration\/s\u00e9paration MACCAFERRI TEX 40.1 certifi\u00e9 ASQUAL a \u00e9t\u00e9 mis en place entre le matelas Reno\u00ae Plus et le sol en fondation pour \u00e9viter toute \u00e9rosion de contact. <\/p>\n

    La pose des 7500m\u00b2 matelas a \u00e9t\u00e9 r\u00e9alis\u00e9e par les \u00e9quipes sp\u00e9cialis\u00e9es de France Maccaferri poss\u00e9dant la qualification d’entreprise Asqual sur la r\u00e9alisation des ouvrages en gabions (ROG).<\/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><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

    L'entreprise Carron a sous-trait\u00e9 le dimensionnement, la fourniture et la mise en \u0153uvre de la protection \u00e0 la surverse en gabions \u00e0 l'entr<\/p>\n","protected":false},"featured_media":114832,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-114871","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":[113624],"applications":[103496,103496],"solutions":[103613],"sectors":[103460]},"yoast_head":"\nS\u00e9curisation de la digue rive gauche de l'Arc, 73 - Maccaferri France<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez nos r\u00e9ussites : S\u00e9curisation de la digue rive gauche de l'Arc, 73. 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