{"id":24229,"date":"2023-05-31T10:18:35","date_gmt":"2023-05-31T08:18:35","guid":{"rendered":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/securisation-rm2565-route-acces-vallee-de-la-vesubie\/"},"modified":"2024-01-26T12:05:37","modified_gmt":"2024-01-26T11:05:37","slug":"securisation-rm2565-route-acces-vallee-de-la-vesubie","status":"publish","type":"stories","link":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/securisation-rm2565-route-acces-vallee-de-la-vesubie\/","title":{"rendered":"SECURISATION RM2565 ROUTE ACCES VALLEE DE LA VESUBIE"},"content":{"rendered":"
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Probl\u00e8me<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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Le 7 d\u00e9cembre 2020, un bloc rocheux de presque 30m3 s\u2019est \u00e9boul\u00e9 aux alentours de 7h30 sur la route principale de la vall\u00e9e de la V\u00e9subie. La route s\u2019est retrouv\u00e9e totalement coup\u00e9e. La zone de d\u00e9part se situait \u00e0 une hauteur de 180m au-dessus de la route. Celui-ci a fait une chute libre de plus de 140 m avant d\u2019impacter directement les 2 lignes d\u2019\u00e9crans pare blocs de + de 120ml en contre bas. La falaise est tr\u00e8s verticale, avec des zones surplombantes \u00e0 cet endroit, et au vu des \u00e9nergies consid\u00e9rables, c\u2019est pourquoi les 2 lignes ont \u00e9t\u00e9 compl\u00e8tement d\u00e9truites.<\/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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Maccaferri a \u00e9t\u00e9 sollicit\u00e9e pour proposer plusieurs types de solutions de protections contre les chutes de blocs. Suite aux 1\u00e8res investigations, il a fallu traiter en priorit\u00e9 une colonne instable d\u2019o\u00f9 \u00e9tait partie les blocs \u00e9boul\u00e9s. Des filets anneaux MacRing ont \u00e9t\u00e9 install\u00e9s pour conforter cette zone. D’autres confortements ont \u00e9t\u00e9 effectu\u00e9s en grillage double torsion. La r\u00e9flexion s\u2019est port\u00e9e sur le remplacement des 2 lignes d’\u00e9crans impact\u00e9es. En 2018 il y avait d\u00e9j\u00e0 eu un \u00e9boulement similaire qui avait aussi d\u00e9truit des \u00e9crans NF95-308. Ce sont des \u00e9crans EPFM 5000 qui ont \u00e9t\u00e9 choisi pour leur efficacit\u00e9 et leur facilit\u00e9 d’installation. Au total, trois lignes d’\u00e9crans ont \u00e9t\u00e9 pos\u00e9es. Ce chantier a n\u00e9cessit\u00e9 des adaptations particuli\u00e8res : les \u00e9crans install\u00e9s, capables de r\u00e9sister \u00e0 une \u00e9nergie de 5500 kJ, (\u00e9nergie d\u00e9velopp\u00e9e lots du Test MEL), ont \u00e9t\u00e9 fourni avec une longueur maximale des trav\u00e9es certifi\u00e9es de14m. Comme ils font 7m de longueur, et pour faciliter les op\u00e9rations de mise en \u0153uvre et d\u2019entretien, des poteaux partag\u00e9s sont pr\u00e9sents au milieu de la ligne. Cela a plusieurs avantages : \u2022 Une partie de la ligne peut \u00eatre mont\u00e9e plus rapidement sans devoir attendre la r\u00e9alisation compl\u00e8te de tous les forages. \u2022 Moins de p\u00e9nibilit\u00e9 pour les \u00e9quipes au montage \u2022 Pas de discontinuit\u00e9 du lin\u00e9aire, donc moins d\u2019emprise au sol et du coup pas de recouvrement d\u2019au minimum 1 module. (gain pour l\u2019Entreprise et le MOA) \u2022 Facilit\u00e9 d\u2019entretien en cas d\u2019impact et de remplacement d\u2019\u00e9l\u00e9ments si n\u00e9cessaire. En moyenne, pendant les 18 mois de chantier, une \u00e9quipe de 12 cordistes \u00e9tait pr\u00e9sente sur le site.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>

Used Products<\/h2>
\"Ecrans<\/div>
Ecrans pare-blocs<\/h6>Les \u00e9crans pare-blocs Maccaferri (ou barri\u00e8res de r\u00e9tention) sont con\u00e7ues pour bloquer \/ intercepter les chutes de pierres et de blocs avant qu\u2019ils ne<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div>
\"Filets\"<\/div>
Filets<\/h6>Les filets HEA (High Energy Absorption) de Maccaferri sont les produits les plus rigides de notre gamme de syst\u00e8mes de grillages Mac.RO(TM), offrant u<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div>
\"Grillage<\/div>
Grillage pare-\u00e9boulis<\/h6>Le grillage Maccaferri DT est un composant essentiel de notre application MacRO d\u2019att\u00e9nuation des chutes de pierres et de protection contre les risque<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

Maccaferri a \u00e9t\u00e9 sollicit\u00e9e pour proposer plusieurs types de solutions de protections contre les chutes de blocs. Suite aux 1\u00e8res investigations, <\/p>\n","protected":false},"featured_media":9445,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-24229","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":null,"applications":null,"solutions":null,"sectors":null},"yoast_head":"\nSECURISATION RM2565 ROUTE ACCES VALLEE DE LA VESUBIE - Maccaferri France<\/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\/fr\/exemples-de-r\u00e9ussites\/securisation-rm2565-route-acces-vallee-de-la-vesubie\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SECURISATION RM2565 ROUTE ACCES VALLEE DE LA VESUBIE - Maccaferri France\" \/>\n<meta property=\"og:description\" content=\"Maccaferri a \u00e9t\u00e9 sollicit\u00e9e pour proposer plusieurs types de solutions de protections contre les chutes de blocs. 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