{"id":31290,"date":"2022-04-25T15:21:28","date_gmt":"2022-04-25T13:21:28","guid":{"rendered":"https:\/\/priceless-taussig.185-125-174-90.plesk.page\/les-reptations-enquete-aupres-des-praticiens-nouvelles-technologies-pour-un-declenchement-controle\/"},"modified":"2023-01-23T15:26:41","modified_gmt":"2023-01-23T13:26:41","slug":"les-reptations-enquete-aupres-des-praticiens-nouvelles-technologies-pour-un-declenchement-controle","status":"publish","type":"post","link":"https:\/\/www.wyssenavalanche.com\/fr\/les-reptations-enquete-aupres-des-praticiens-nouvelles-technologies-pour-un-declenchement-controle\/","title":{"rendered":"Les reptations – Enqu\u00eate aupr\u00e8s des praticiens & Nouvelles technologies pour un d\u00e9clenchement contr\u00f4l\u00e9"},"content":{"rendered":"\t\t
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M\u00eame de petites avalanches de glissement peuvent repr\u00e9senter de grands d\u00e9fis pour les routes, les domaines skiables et les b\u00e2timents. Wyssen Avalanche Control, l’entreprise Sch\u00f6llkopf AG<\/a> et la HES des Grisons IBAR<\/a> m\u00e8nent actuellement des tests sur le d\u00e9clenchement contr\u00f4l\u00e9 des reptations. L’objectif de ces tests est d’\u00e9tudier des g\u00e9otextiles qui r\u00e9duisent la rugosit\u00e9 des pentes – la neige peut ainsi glisser tr\u00e8s t\u00f4t et r\u00e9duire les tensions dans le manteau neigeux avant que ne se forment des avalanches de glissement cons\u00e9quente. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Probl\u00e9matique de la neige glissante<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Les avalanches de glissement ne sont pas un type d’avalanche inconnu dans les Alpes. On observe cependant une augmentation de la r\u00e9partition spatiale du ph\u00e9nom\u00e8ne (principalement sur les pentes expos\u00e9es au sud, tendance \u00e0 la hausse \u00e0 toutes les expositions) et surtout un nombre croissant d’avalanches \u00e0 des altitudes plus \u00e9lev\u00e9es, avec des ruptures parfois au-dessus de 2000 m. En termes de surface, m\u00eame de petits talus de quelques 100 m2<\/sup> au-dessus des routes ou des flancs de montagne entiers peuvent poser des probl\u00e8mes significatifs. Les pistes de ski, les routes ou les b\u00e2timents sont souvent menac\u00e9s. Cela peut conduire \u00e0 des p\u00e9riodes de fermeture prolong\u00e9es ou \u00e0 des fermetures g\u00e9n\u00e9rales, et donc \u00e0 des dommages \u00e9conomiques consid\u00e9rables. <\/br>Sur le plan temporel, les avalanches de glissement peuvent dur\u00e9es pendant tout l’hiver si les conditions le permettent et poser des probl\u00e8mes aux responsables. C’est surtout l’apparition de reptations sur de longues p\u00e9riodes (plusieurs semaines ou mois) qui pose des d\u00e9fis aux praticiens. Comme il n’est pas encore possible aujourd’hui de pr\u00e9voir de mani\u00e8re fiable la neige glissante, une meilleure compr\u00e9hension du processus reste une partie active de la recherche. En cons\u00e9quence, il n’existe jusqu’\u00e0 pr\u00e9sent aucun moyen fiable de d\u00e9clencher ces avalanches de mani\u00e8re contr\u00f4l\u00e9e, et peu de solutions permanentes \u00e9conomiquement avantageuses pour emp\u00eacher leur survenue.<\/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

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Mesures existantes<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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M\u00eame sur les petites surfaces, l’intervention pour pr\u00e9venir les r\u00e9ptations est relativement importante. Les mesures \u00e9prouv\u00e9es telles que les tr\u00e9pieds, les pieux ou les bermes offrent une bonne protection contre le glissement, mais constituent un impact visuel sur le paysage tout au long de l’ann\u00e9e et rendent l’exploitation des surfaces plus difficile en \u00e9t\u00e9. Les mesures contre la neige glissante sont utilis\u00e9es dans toute la Suisse et dans les Alpes, mais il n’existe pas de vue d’ensemble d\u00e9taill\u00e9e et actuelle.<\/br><\/br>Illustration<\/b>: Aper\u00e7u selon Leuenberger (2003) avec des exemples de domaines d’application de diff\u00e9rentes mesures : Tr\u00e9pieds en bois (triangles verts): 35x ; piquets (cercles rouges): 32x et bermes (carr\u00e9s bruns): 64x.<\/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

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Surface d'essai de neige glissante<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Pour \u00e9tudier les diff\u00e9rents g\u00e9otextiles, nous avons mis en place un site exp\u00e9rimental \u00e0 Davos Frauenkirch. En compl\u00e9ment des films, une station m\u00e9t\u00e9orologique, une webcam et d’autres capteurs ont \u00e9t\u00e9 install\u00e9s afin de pouvoir enregistrer les conditions environnementales pendant les \u00e9v\u00e9nements. Outre les tests avec les g\u00e9otextiles, il s’agit \u00e9galement d’am\u00e9liorer la compr\u00e9hension des processus et de savoir quand le glissement se produit. Les premiers tests ont d\u00e9j\u00e0 \u00e9t\u00e9 effectu\u00e9s durant l’hiver 2021\/22 (voir la vid\u00e9o tout en haut), d’autres tests sont pr\u00e9vus pour l’hiver 2022\/23.<\/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

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Sondage<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Nous demandons aux praticiens de nous faire part de leurs exp\u00e9riences dans le domaine de la neige glissante. Notre objectif dans le cadre de ce projet est de g\u00e9n\u00e9rer un aper\u00e7u actuel de la dimension de la probl\u00e9matique des r\u00e9ptations.<\/p>\n

Quelle est la r\u00e9gularit\u00e9 des avalanches de glissement dans votre r\u00e9gion?<\/strong><\/span>\n

Quelle est l’\u00e9tendue des surfaces concern\u00e9es et quelles infrastructures sont touch\u00e9es?<\/strong><\/span>\n

Quelles sont les mesures (de construction ou d’organisation) actuellement mises en \u0153uvre dans votre r\u00e9gion?\n<\/strong><\/span>

Je me r\u00e9jouis de recevoir vos r\u00e9actions et vos exp\u00e9riences.<\/p>\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

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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tDonner directement un feedback<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Contact<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Wyssen Avalanche Control AG<\/b><\/p>\n

Matthias Pleyer
matthias@wyssen.com<\/a><\/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

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M\u00eame de petites avalanches de glissement peuvent repr\u00e9senter de grands d\u00e9fis pour les routes, les domaines skiables et les b\u00e2timents. Wyssen Avalanche Control, l’entreprise Sch\u00f6llkopf AG et la HES des Grisons IBAR m\u00e8nent actuellement des tests sur le d\u00e9clenchement contr\u00f4l\u00e9 des reptations […]<\/p>\n","protected":false},"author":10,"featured_media":24268,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[2509],"tags":[],"class_list":["post-31290","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveautes"],"yoast_head":"\nLes reptations - Enqu\u00eate aupr\u00e8s des praticiens & Nouvelles technologies pour un d\u00e9clenchement contr\u00f4l\u00e9 • Wyssen Avalanche<\/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:\/\/www.wyssenavalanche.com\/fr\/les-reptations-enquete-aupres-des-praticiens-nouvelles-technologies-pour-un-declenchement-controle\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les reptations - Enqu\u00eate aupr\u00e8s des praticiens & Nouvelles technologies pour un d\u00e9clenchement contr\u00f4l\u00e9 • Wyssen Avalanche\" \/>\n<meta property=\"og:description\" content=\"M\u00eame de petites avalanches de glissement peuvent repr\u00e9senter de grands d\u00e9fis pour les routes, les domaines skiables et les b\u00e2timents. 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