{"id":4954,"date":"2025-12-10T09:42:52","date_gmt":"2025-12-10T09:42:52","guid":{"rendered":"https:\/\/eurohinca.com\/?p=4954"},"modified":"2026-03-12T11:48:07","modified_gmt":"2026-03-12T11:48:07","slug":"quel-est-limpact-des-technologies-sans-tranchee-sur-les-couts-dinvestissement-et-dexploitation-par-rapport-a-lexcavation-en-tranchee-ouverte","status":"publish","type":"post","link":"https:\/\/eurohinca.com\/fr\/que-impacto-tienen-las-tecnologias-sin-zanja-en-el-capex-y-el-opex-frente-a-la-excavacion-a-cielo-abierto\/","title":{"rendered":"Quel est l'impact des technologies sans tranch\u00e9e sur le CAPEX et l'OPEX par rapport \u00e0 l'excavation en tranch\u00e9e ouverte ?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"4954\" class=\"elementor elementor-4954\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d6327ef e-flex e-con-boxed e-con e-parent\" data-id=\"d6327ef\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0d3dfe2 elementor-widget elementor-widget-text-editor\" data-id=\"0d3dfe2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"546\" data-end=\"955\">Le <strong data-start=\"550\" data-end=\"575\">Technologies sans tranch\u00e9e<\/strong> -microtunnel, HDD, Direct Pipe et variantes \u00e0 bouclier ferm\u00e9 - ont un impact direct sur la qualit\u00e9 de l'eau. <strong data-start=\"673\" data-end=\"702\">CAPEX (investissement initial)<\/strong> et le <strong data-start=\"708\" data-end=\"734\">OPEX (co\u00fbt d'exploitation)<\/strong> par opposition \u00e0 l'excavation \u00e0 ciel ouvert. Leur principal avantage est de permettre l'installation de canalisations et de tunnels. <strong data-start=\"851\" data-end=\"881\">sans tranch\u00e9e continue<\/strong>, Le projet r\u00e9duira les travaux de terrassement, le repositionnement et l'impact sur l'environnement.<\/p><p data-start=\"957\" data-end=\"1159\">Eurohinca, avec plus de 120 km ex\u00e9cut\u00e9s depuis 1996, observe que les \u00e9conomies et l'efficacit\u00e9 ne proviennent pas seulement de la m\u00e9thode de construction, mais aussi de la fa\u00e7on dont elle minimise les risques, les d\u00e9lais et les co\u00fbts indirects.<\/p><h2 data-start=\"1166\" data-end=\"1192\"><strong data-start=\"1169\" data-end=\"1192\">1. l'impact sur le CAPEX<\/strong><\/h2><p data-start=\"1194\" data-end=\"1225\">Le CAPEX est optimis\u00e9 par :<\/p><h3 data-start=\"1227\" data-end=\"1265\">\u25cf Travaux de g\u00e9nie civil mineurs en surface<\/h3><p data-start=\"1266\" data-end=\"1600\">L'excavation traditionnelle n\u00e9cessite l'enl\u00e8vement des chauss\u00e9es, le creusement de tranch\u00e9es profondes, la d\u00e9viation de la circulation, le remplacement des services publics existants, le remblayage et le compactage.<br data-start=\"1425\" data-end=\"1428\" \/>Les technologies sans tranch\u00e9e limitent les performances \u00e0 <strong data-start=\"1477\" data-end=\"1525\">deux puits et un traceur souterrain m\u00e9canis\u00e9<\/strong>, la r\u00e9duction des travaux de g\u00e9nie civil en milieu urbain ou industriel.<\/p><p data-start=\"1602\" data-end=\"1788\">Une vue d'ensemble de la valeur de ces solutions urbaines est disponible \u00e0 l'adresse suivante <strong data-start=\"1674\" data-end=\"1784\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/systemes-dassainissement-urbain\/\" target=\"_new\" rel=\"noopener\" data-start=\"1676\" data-end=\"1782\">syst\u00e8mes d'assainissement urbain sans tranch\u00e9e<\/a><\/strong>.<\/p><h3 data-start=\"1790\" data-end=\"1836\">\u25cf R\u00e9duction des conditions et remplacements<\/h3><p data-start=\"1837\" data-end=\"2020\">Elle \u00e9vite le remplacement de chauss\u00e9es complexes, l'urbanisation, les rev\u00eatements routiers sp\u00e9ciaux ou les acc\u00e8s industriels. Elle r\u00e9duit \u00e9galement les co\u00fbts li\u00e9s aux servitudes temporaires et aux expropriations.<\/p><h3 data-start=\"2022\" data-end=\"2071\">\u25cf Une plus grande certitude en terrain difficile<\/h3><p data-start=\"2072\" data-end=\"2501\">En pr\u00e9sence de roches, d'une nappe phr\u00e9atique \u00e9lev\u00e9e, de sols instables ou d'interf\u00e9rences, la tranch\u00e9e ouverte peut s'av\u00e9rer nettement plus co\u00fbteuse.<br data-start=\"2203\" data-end=\"2206\" \/>Le microtunnelage ou l'hydroblindage permet de <strong data-start=\"2246\" data-end=\"2280\">contr\u00f4ler la pression depuis l'avant<\/strong> et de stabiliser l'avancement des travaux sans d\u00e9passement impr\u00e9vu des co\u00fbts, comme l'explique le document <strong data-start=\"2353\" data-end=\"2497\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/gestion-de-la-pression-sous-une-nappe-phreatique-elevee-avec-des-boucliers-hydrauliques\/\" target=\"_new\" rel=\"noopener\" data-start=\"2355\" data-end=\"2495\">gestion de la pression en cas de nappe phr\u00e9atique \u00e9lev\u00e9e<\/a><\/strong>.<\/p><h3 data-start=\"2503\" data-end=\"2554\">\u25cf Moins de contraintes en mati\u00e8re de trafic et de services.<\/h3><p data-start=\"2555\" data-end=\"2715\">Les d\u00e9tours, les tranch\u00e9es et les autorisations sp\u00e9ciales entra\u00eenent des co\u00fbts logistiques et administratifs qui sont presque enti\u00e8rement \u00e9limin\u00e9s avec les m\u00e9thodes m\u00e9canis\u00e9es sans tranch\u00e9e.<\/p><h2 data-start=\"2722\" data-end=\"2747\"><strong data-start=\"2725\" data-end=\"2747\">2. l'impact sur l'OPEX<\/strong><\/h2><p data-start=\"2749\" data-end=\"2838\">Les avantages op\u00e9rationnels se manifestent tout au long de la dur\u00e9e de vie de l'infrastructure :<\/p><h3 data-start=\"2840\" data-end=\"2879\">\u25cf Am\u00e9lioration des performances hydrauliques<\/h3><p data-start=\"2880\" data-end=\"3063\">La pr\u00e9cision du microtunnel permet des trac\u00e9s optimaux et des pentes exactes, ce qui r\u00e9duit les pertes de charge, \u00e9vite les goulets d'\u00e9tranglement et minimise la consommation d'\u00e9nergie lors du pompage.<\/p><h3 data-start=\"3065\" data-end=\"3112\">\u25cf Une maintenance r\u00e9duite et moins d'incidents.<\/h3><p data-start=\"3113\" data-end=\"3469\">En r\u00e9duisant les tassements, les infiltrations et les fissures dus \u00e0 un mauvais compactage de la tranch\u00e9e, il r\u00e9duit la n\u00e9cessit\u00e9 de proc\u00e9der \u00e0 des r\u00e9parations.<br data-start=\"3236\" data-end=\"3239\" \/>Ceci est particuli\u00e8rement important pour les r\u00e9seaux d'\u00e9gouts et de drainage, comme indiqu\u00e9 dans le guide. <strong data-start=\"3327\" data-end=\"3465\"><a class=\"decorated-link cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"3329\" data-end=\"3463\">comment construire des \u00e9gouts sans tranch\u00e9e<\/a><\/strong>.<\/p><h3 data-start=\"3471\" data-end=\"3505\">\u25cf une dur\u00e9e de vie utile plus longue de l'actif<\/h3><p data-start=\"3506\" data-end=\"3676\">Les tuyaux install\u00e9s par microtunnelage tendent \u00e0 pr\u00e9senter moins d'ovalisation, un meilleur contr\u00f4le des joints et moins de dommages m\u00e9caniques, ce qui prolonge la dur\u00e9e de vie du syst\u00e8me.<\/p><h2 data-start=\"3683\" data-end=\"3725\"><strong data-start=\"3686\" data-end=\"3725\">3. Avantages \u00e9conomiques indirects<\/strong><\/h2><p data-start=\"3727\" data-end=\"3805\">Outre les co\u00fbts d'investissement et d'exploitation, les technologies sans tranch\u00e9e permettent de r\u00e9aliser des \u00e9conomies :<\/p><ul data-start=\"3807\" data-end=\"4053\"><li data-start=\"3807\" data-end=\"3867\"><p data-start=\"3809\" data-end=\"3867\">Moins d'impact sur les r\u00e9sidents, les entreprises et l'industrie.<\/p><\/li><li data-start=\"3868\" data-end=\"3920\"><p data-start=\"3870\" data-end=\"3920\">R\u00e9duction des \u00e9missions et du transport des mat\u00e9riaux.<\/p><\/li><li data-start=\"3921\" data-end=\"4001\"><p data-start=\"3923\" data-end=\"4001\">Moins d'interf\u00e9rences avec les op\u00e9rations critiques (usines, ports, a\u00e9roports).<\/p><\/li><li data-start=\"4002\" data-end=\"4053\"><p data-start=\"4004\" data-end=\"4053\">Une meilleure acceptation sociale et des autorisations plus rapides.<\/p><\/li><\/ul><p data-start=\"4055\" data-end=\"4275\">Nombre de ces avantages sont mis en \u00e9vidence dans des ouvrages complexes rassembl\u00e9s dans <strong data-start=\"4128\" data-end=\"4189\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/travaux\/\" target=\"_new\" rel=\"noopener\" data-start=\"4130\" data-end=\"4187\">Projets Eurohinca<\/a><\/strong>, lorsque les m\u00e9thodes m\u00e9canis\u00e9es ont permis d'\u00e9viter les coupes prolong\u00e9es ou les conditions d\u00e9licates.<\/p><h2 data-start=\"4282\" data-end=\"4353\"><strong data-start=\"4285\" data-end=\"4353\">4. Quand l'excavation \u00e0 ciel ouvert reste comp\u00e9titive<\/strong><\/h2><ul data-start=\"4355\" data-end=\"4501\"><li data-start=\"4355\" data-end=\"4398\"><p data-start=\"4357\" data-end=\"4398\">Pistes tr\u00e8s courtes sur des sols stables.<\/p><\/li><li data-start=\"4399\" data-end=\"4449\"><p data-start=\"4401\" data-end=\"4449\">Zones o\u00f9 aucun d\u00e9veloppement ou service n'est affect\u00e9.<\/p><\/li><li data-start=\"4450\" data-end=\"4501\"><p data-start=\"4452\" data-end=\"4501\">Petits diam\u00e8tres avec des profondeurs r\u00e9duites.<\/p><\/li><\/ul><p data-start=\"4503\" data-end=\"4739\">Dans ce cas, les deux solutions doivent \u00eatre compar\u00e9es dans le cadre d'un processus d'\u00e9valuation. <strong data-start=\"4559\" data-end=\"4586\">\u00e9tude des alternatives<\/strong>, tel que d\u00e9crit dans <strong data-start=\"4608\" data-end=\"4735\"><a class=\"decorated-link cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"4610\" data-end=\"4733\">Comment choisir entre le microtunnelier, le HDD et le Direct Pipe ?<\/a><\/strong>.<\/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\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Las Tecnolog\u00edas SIN zanja \u2014microt\u00fanel, HDD, Direct Pipe y variantes de escudo cerrado\u2014 generan un impacto directo sobre el CAPEX (inversi\u00f3n inicial) y el OPEX (coste operativo) frente a la excavaci\u00f3n a cielo abierto. Su ventaja principal radica en que permiten instalar conducciones y t\u00faneles sin abrir zanjas continuas, reduciendo movimientos de tierras, reposiciones y [&hellip;]<\/p>\n","protected":false},"author":80,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[146],"tags":[],"class_list":["post-4954","post","type-post","status-publish","format-standard","hentry","category-preguntas-frecuentes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Microt\u00fanel y tecnolog\u00edas sin zanja en CAPEX y OPEX<\/title>\n<meta name=\"description\" content=\"C\u00f3mo las tecnolog\u00edas SIN zanja reducen CAPEX y OPEX frente a la excavaci\u00f3n a cielo abierto: menos obra civil y mayor precisi\u00f3n.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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