{"id":4407,"date":"2021-11-24T11:51:38","date_gmt":"2021-11-24T16:51:38","guid":{"rendered":"http:\/\/efterklang.org.hemsida.eu\/projects\/the-marieholm-tunnel-gothenburg\/"},"modified":"2021-12-10T03:55:08","modified_gmt":"2021-12-10T08:55:08","slug":"marieholmstunnelen-goteborg","status":"publish","type":"projects","link":"https:\/\/efterklang.org\/no\/projects\/marieholmstunnelen-goteborg\/","title":{"rendered":"Marieholmstunnelen, G\u00f8teborg"},"content":{"rendered":"<h6>Bakgrunn<\/h6>\n<p class=\"p1\">Marieholmstunnelen er en 500 meter lang veitunnel under elven G\u00f6ta i G\u00f8teborg, Sverige. Tunnelen forbinder Hisingen og G\u00f8teborg havn med sentrum av byen, og forenkler hverdagen for et stort antall reisende hver dag. Tunnelen er en senketunnel, den tredje av sitt slag i Sverige. Den best\u00e5r av gigantiske betongelementer som er montert p\u00e5 ti meters dybde. Hvert betongelement tilsvarer en fotballbane i st\u00f8rrelse og veier 25 000 tonn.<\/p>\n<h6>Oppdrag<\/h6>\n<p class=\"p1\">Efterklang har f\u00e5tt i oppdrag av Trafikverket \u00e5 gjennomf\u00f8re m\u00e5linger av undervannslyd i elven G\u00f6ta ved bygging samt ved lossing av steinmasser fra pram i l\u00f8pet av 2018. M\u00e5let var \u00e5 unders\u00f8ke om undervannsst\u00f8y fra byggearbeid p\u00e5virket laksen som sv\u00f8mte opp gjennom elva. Det ble utf\u00f8rt m\u00e5linger med hydrofoner i en avstand p\u00e5 henholdsvis 20 og 60 meter fra tunnelsegmentene.<\/p>\n<h6>Resultat<\/h6>\n<p class=\"p1\">M\u00e5lingene viste at arbeidet med \u00e5 losse steinmasser ikke p\u00e5virket laksen negativt. De m\u00e5lte niv\u00e5ene oppfylte referanseindeksen fastsatt av myndighetene med god margin, og det ble ikke ansett som n\u00f8dvendig med ytterligere st\u00f8yreduserende tiltak.<\/p>\n","protected":false},"featured_media":11302,"template":"","project_category":[234,304],"country":[332],"sector":[379],"class_list":["post-4407","projects","type-projects","status-publish","has-post-thumbnail","hentry","project_category-stoy","project_category-stoykartlegging","country-sweden-no","sector-roads-and-highways-no"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Marieholmstunnelen, G\u00f8teborg - Efterklang<\/title>\n<meta name=\"description\" content=\"Efterklang har gjort undervannsm\u00e5linger i G\u00f6ta \u00c4lv for \u00e5 sikre at laksen ikke ble p\u00e5virket av anleggsarbeid.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/efterklang.org\/projects\/marieholmstunnelen-goteborg\/?lang=no\" \/>\n<meta property=\"og:locale\" content=\"nb_NO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Marieholmstunnelen, G\u00f8teborg - 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