{"id":9852,"date":"2022-12-07T11:14:37","date_gmt":"2022-12-07T10:14:37","guid":{"rendered":"https:\/\/www.yellowscan.com\/knowledge\/evaluation-des-risques-deboulement-sur-les-reseaux-routiers\/"},"modified":"2025-05-06T10:31:56","modified_gmt":"2025-05-06T08:31:56","slug":"risk-assessment-of-rockfall-hazards-on-road-networks","status":"publish","type":"ys_knowledge","link":"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/","title":{"rendered":"\u00c9valuation des risques d’\u00e9boulement routier – YellowScan"},"content":{"rendered":"\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t
\n
\n

Quel \u00e9tait le d\u00e9fi \u00e0 relever ?<\/h3>\n

L’Avion Jaune et Ginger CEBTP, bureau d’\u00e9tudes g\u00e9otechniques, ont \u00e9t\u00e9 mandat\u00e9s par le Conseil G\u00e9n\u00e9ral pour r\u00e9aliser une \u00e9tude d’\u00e9valuation des risques d’\u00e9boulement sur leurs r\u00e9seaux routiers. L’objectif final \u00e9tait de mettre en \u0153uvre les mesures de pr\u00e9vention les plus appropri\u00e9es pour prot\u00e9ger les usagers de la route.<\/p>\n

La d\u00e9gradation naturelle des falaises calcaires g\u00e9n\u00e8re des glissements de terrain et des chutes de blocs qui peuvent mobiliser d’importants volumes de mat\u00e9riaux et avoir un impact sur les r\u00e9seaux routiers situ\u00e9s en contrebas.<\/p>\n

La gestion de ce risque \u00e9tait principalement bas\u00e9e sur l’analyse trajectographique, qui consistait \u00e0 simuler la chute de masses rocheuses depuis les sommets jusqu’au fond de la vall\u00e9e. L’objectif \u00e9tait d’\u00e9valuer le niveau de risque encouru et d’optimiser le dimensionnement et la mise en \u0153uvre des barri\u00e8res contre les chutes de pierres. Pour mener \u00e0 bien cette att\u00e9nuation des risques, une \u00e9tude de mod\u00e9lisation en 3D des falaises surplombant une route fr\u00e9quent\u00e9e s’est av\u00e9r\u00e9e indispensable. Le site mesurait 200 m de haut, 300 m de large et 2,5 km de long.<\/p>\n<\/div>\n<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Glissements de terrain et chutes de blocs trajectographie<\/em><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t
\n
\n
\n
\n

Solution<\/h3>\n

La configuration et la dangerosit\u00e9 du terrain ne permettaient pas de cartographier les sols sous une v\u00e9g\u00e9tation dense avec les m\u00e9thodes traditionnelles. L’Avion Jaune a donc utilis\u00e9 son YellowScan Vx20-300 UAV LiDAR pour \u00e9tudier les falaises et extraire un mod\u00e8le num\u00e9rique de terrain (MNT), apr\u00e8s classification et filtrage des donn\u00e9es laser.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Pour \u00e9tudier ce type d’environnement, le LiDAR pour drone est le meilleur outil : le gain de temps et la s\u00e9curit\u00e9 accrue sont consid\u00e9rables. Gr\u00e2ce \u00e0 ses 5 \u00e9chos, le Vx20-300 peut facilement p\u00e9n\u00e9trer dans la v\u00e9g\u00e9tation pour r\u00e9cup\u00e9rer le sol et g\u00e9n\u00e9rer un MNT pr\u00e9cis, offrant ainsi aux g\u00e9ologues un nouvel ensemble de cartes en 3D pour la gestion des risques et l’aide \u00e0 la d\u00e9cision.<\/em><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tBenjamin Pradel<\/span><\/strong>\n\nChef de projet en t\u00e9l\u00e9d\u00e9tection<\/strong> – L’Avion Jaune<\/em>\n<\/span>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t
\n
\n

Param\u00e8tres de la mission<\/h3>\n

Quatre vols de quinze minutes chacun ont \u00e9t\u00e9 n\u00e9cessaires pour cartographier l’ensemble du site. Cette op\u00e9ration a \u00e9t\u00e9 r\u00e9alis\u00e9e au lever du soleil, lorsque les routes \u00e9taient moins fr\u00e9quent\u00e9es. Pr\u00e8s de la route, ils ont relev\u00e9 des points de contr\u00f4le \u00e0 l’aide d’un GPS diff\u00e9rentiel (DGPS).<\/p>\n

Le traitement des donn\u00e9es a dur\u00e9 environ deux jours (correction de la trajectoire, mise en correspondance des lignes de vol, classification du nuage de points).<\/p>\n

    \n
  • Nombre de vols : 4<\/li>\n
  • Superficie : 75 hectares (185 acres)<\/li>\n
  • Dur\u00e9e totale de l’op\u00e9ration : 6 heures (vols, contr\u00f4le qualit\u00e9, prise de points DGPS)<\/li>\n
  • Vitesse de vol : 5 m\/s (11 mph)<\/li>\n
  • Hauteur de vol : 60m (200 ft)<\/li>\n
  • \u00c9quipement utilis\u00e9 : YellowScan Vx20-300<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
    \n\t\t\t\t\t\t
    \n\t\t\t\t\t
    \n\t\t\t
    \n\t\t\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    Mod\u00e8le num\u00e9rique de terrain de la zone<\/em><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

    \n\t\t\t
    \n\t\t\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    Nuage de points LiDAR du YellowScan Vx20<\/em><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

    \n\t\t\t\t\t\t
    \n\t\t\t\t\t
    \n\t\t\t
    \n\t\t\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    2022 \u00a9 Photos & Pointclouds :
    \n L’Avion Jaune.<\/span>
    \n<\/span><\/em><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"featured_media":5219,"menu_order":203,"template":"","meta":{"_acf_changed":false,"content-type":""},"categories":[88],"class_list":["post-9852","ys_knowledge","type-ys_knowledge","status-publish","has-post-thumbnail","hentry","category-success-story"],"acf":[],"yoast_head":"\n\u00c9valuation des risques d'\u00e9boulement routier - YellowScan<\/title>\n<meta name=\"description\" content=\"L'Avion Jaune a \u00e9t\u00e9 mandat\u00e9 par le Conseil G\u00e9n\u00e9ral pour r\u00e9aliser une \u00e9tude d'\u00e9valuation des risques d'\u00e9boulement sur son r\u00e9seau routier.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u00c9valuation des risques d'\u00e9boulement routier - YellowScan\" \/>\n<meta property=\"og:description\" content=\"L'Avion Jaune a \u00e9t\u00e9 mandat\u00e9 par le Conseil G\u00e9n\u00e9ral pour r\u00e9aliser une \u00e9tude d'\u00e9valuation des risques d'\u00e9boulement sur son r\u00e9seau routier.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/\" \/>\n<meta property=\"og:site_name\" content=\"YellowScan\" \/>\n<meta property=\"article:modified_time\" content=\"2025-05-06T08:31:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.yellowscan.com\/wp-content\/uploads\/2022\/12\/ys_website_banner_knowledge_20221207.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1150\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/knowledge\\\/risk-assessment-of-rockfall-hazards-on-road-networks\\\/\",\"url\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/knowledge\\\/risk-assessment-of-rockfall-hazards-on-road-networks\\\/\",\"name\":\"\u00c9valuation des risques d'\u00e9boulement routier - YellowScan\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/knowledge\\\/risk-assessment-of-rockfall-hazards-on-road-networks\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/knowledge\\\/risk-assessment-of-rockfall-hazards-on-road-networks\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.yellowscan.com\\\/wp-content\\\/uploads\\\/2022\\\/12\\\/ys_website_banner_knowledge_20221207.jpg\",\"datePublished\":\"2022-12-07T10:14:37+00:00\",\"dateModified\":\"2025-05-06T08:31:56+00:00\",\"description\":\"L'Avion Jaune a \u00e9t\u00e9 mandat\u00e9 par le Conseil G\u00e9n\u00e9ral pour r\u00e9aliser une \u00e9tude d'\u00e9valuation des risques d'\u00e9boulement sur son r\u00e9seau routier.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/knowledge\\\/risk-assessment-of-rockfall-hazards-on-road-networks\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/knowledge\\\/risk-assessment-of-rockfall-hazards-on-road-networks\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/knowledge\\\/risk-assessment-of-rockfall-hazards-on-road-networks\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.yellowscan.com\\\/wp-content\\\/uploads\\\/2022\\\/12\\\/ys_website_banner_knowledge_20221207.jpg\",\"contentUrl\":\"https:\\\/\\\/www.yellowscan.com\\\/wp-content\\\/uploads\\\/2022\\\/12\\\/ys_website_banner_knowledge_20221207.jpg\",\"width\":1150,\"height\":600},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/knowledge\\\/risk-assessment-of-rockfall-hazards-on-road-networks\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u00c9valuation des risques d’\u00e9boulement routier – YellowScan\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/#website\",\"url\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/\",\"name\":\"YellowScan\",\"description\":\"Reliable UAV LiDAR systems for Drone 3D laser mapping\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.yellowscan.com\\\/fr\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u00c9valuation des risques d'\u00e9boulement routier - YellowScan","description":"L'Avion Jaune a \u00e9t\u00e9 mandat\u00e9 par le Conseil G\u00e9n\u00e9ral pour r\u00e9aliser une \u00e9tude d'\u00e9valuation des risques d'\u00e9boulement sur son r\u00e9seau routier.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/","og_locale":"fr_FR","og_type":"article","og_title":"\u00c9valuation des risques d'\u00e9boulement routier - YellowScan","og_description":"L'Avion Jaune a \u00e9t\u00e9 mandat\u00e9 par le Conseil G\u00e9n\u00e9ral pour r\u00e9aliser une \u00e9tude d'\u00e9valuation des risques d'\u00e9boulement sur son r\u00e9seau routier.","og_url":"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/","og_site_name":"YellowScan","article_modified_time":"2025-05-06T08:31:56+00:00","og_image":[{"width":1150,"height":600,"url":"https:\/\/www.yellowscan.com\/wp-content\/uploads\/2022\/12\/ys_website_banner_knowledge_20221207.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/","url":"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/","name":"\u00c9valuation des risques d'\u00e9boulement routier - YellowScan","isPartOf":{"@id":"https:\/\/www.yellowscan.com\/fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/#primaryimage"},"image":{"@id":"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/#primaryimage"},"thumbnailUrl":"https:\/\/www.yellowscan.com\/wp-content\/uploads\/2022\/12\/ys_website_banner_knowledge_20221207.jpg","datePublished":"2022-12-07T10:14:37+00:00","dateModified":"2025-05-06T08:31:56+00:00","description":"L'Avion Jaune a \u00e9t\u00e9 mandat\u00e9 par le Conseil G\u00e9n\u00e9ral pour r\u00e9aliser une \u00e9tude d'\u00e9valuation des risques d'\u00e9boulement sur son r\u00e9seau routier.","breadcrumb":{"@id":"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/#primaryimage","url":"https:\/\/www.yellowscan.com\/wp-content\/uploads\/2022\/12\/ys_website_banner_knowledge_20221207.jpg","contentUrl":"https:\/\/www.yellowscan.com\/wp-content\/uploads\/2022\/12\/ys_website_banner_knowledge_20221207.jpg","width":1150,"height":600},{"@type":"BreadcrumbList","@id":"https:\/\/www.yellowscan.com\/fr\/knowledge\/risk-assessment-of-rockfall-hazards-on-road-networks\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.yellowscan.com\/fr\/"},{"@type":"ListItem","position":2,"name":"\u00c9valuation des risques d’\u00e9boulement routier – YellowScan"}]},{"@type":"WebSite","@id":"https:\/\/www.yellowscan.com\/fr\/#website","url":"https:\/\/www.yellowscan.com\/fr\/","name":"YellowScan","description":"Reliable UAV LiDAR systems for Drone 3D laser mapping","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.yellowscan.com\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"}]}},"_links":{"self":[{"href":"https:\/\/www.yellowscan.com\/fr\/wp-json\/wp\/v2\/ys_knowledge\/9852","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yellowscan.com\/fr\/wp-json\/wp\/v2\/ys_knowledge"}],"about":[{"href":"https:\/\/www.yellowscan.com\/fr\/wp-json\/wp\/v2\/types\/ys_knowledge"}],"version-history":[{"count":6,"href":"https:\/\/www.yellowscan.com\/fr\/wp-json\/wp\/v2\/ys_knowledge\/9852\/revisions"}],"predecessor-version":[{"id":22443,"href":"https:\/\/www.yellowscan.com\/fr\/wp-json\/wp\/v2\/ys_knowledge\/9852\/revisions\/22443"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yellowscan.com\/fr\/wp-json\/wp\/v2\/media\/5219"}],"wp:attachment":[{"href":"https:\/\/www.yellowscan.com\/fr\/wp-json\/wp\/v2\/media?parent=9852"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yellowscan.com\/fr\/wp-json\/wp\/v2\/categories?post=9852"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}