{"id":3569,"date":"2015-10-05T00:00:00","date_gmt":"2015-10-05T00:00:00","guid":{"rendered":"https:\/\/newsroom.ferrovial.com\/news\/finaliza-la-excavacion-de-los-tuneles-de-metro-de-la-linea-6-en-santiago-de-chile\/"},"modified":"2022-12-21T10:07:51","modified_gmt":"2022-12-21T09:07:51","slug":"finaliza-la-excavacion-de-los-tuneles-de-metro-de-la-linea-6-en-santiago-de-chile","status":"publish","type":"new","link":"https:\/\/newsroom.ferrovial.com\/es\/noticias\/finaliza-la-excavacion-de-los-tuneles-de-metro-de-la-linea-6-en-santiago-de-chile\/","title":{"rendered":"Finaliza la excavaci\u00f3n de los t\u00faneles de metro de la L\u00ednea 6 en Santiago de Chile"},"content":{"rendered":"    <section class=\"wysiwyg text-editor \" id=\"\">\n        <div class=\"container container--narrow container--p-10\">\n            <p>El pasado 14 de septiembre de 2015 <a title=\"Ferrovial Agroman\" href=\"https:\/\/www.ferrovial.com\/es\/lineas-de-negocio\/construccion\/\" target=\"_blank\" rel=\"nofollow\"> Ferrovial Agroman<\/a> Chile finaliz\u00f3 la excavaci\u00f3n de los t\u00faneles de Metro (Tramo 2) correspondiente a la nueva L\u00ednea 6 que formar\u00e1 parte del Metro de Santiago de Chile. Dicha l\u00ednea 6, cuyo trazado completo se proyecta en t\u00fanel, tiene un desarrollo total de aproximadamente 15,4 km. Ferrovial Agroman se encarga de la construcci\u00f3n del Tramo 2 de la citada L\u00ednea 6 desde el pasado mes de Enero de 2.015. Este Tramo incluye la ejecuci\u00f3n de 2 estaciones, 2 piques interestaci\u00f3n, 6 piques de ventilaci\u00f3n y el t\u00fanel interestaci\u00f3n comprendido entre estos sectores con un recorrido aproximado de 3.000 metros.<\/p>\n<p>Adem\u00e1s del t\u00fanel interestaci\u00f3n el proyecto consta de dos estaciones, la ejecuci\u00f3n de dos piques, 196 metros de t\u00fanel estaci\u00f3n y seis piques de ventilaci\u00f3n, todo ello llevado a nivel radier.<br \/>\nHay que destacar los 125.000 m3 de excavaci\u00f3n subterr\u00e1nea, con la gran problem\u00e1tica asociada de tener de trasladar el material excavado fuera de la obra hasta los vertederos de las zonas del extrarradios, teniendo en cuenta que dicha obra se encuentra ubicada en el centro de una ciudad de m\u00e1s de 7 millones de habitantes.<\/p>\n<p>Para la construcci\u00f3n del T\u00fanel Interestaci\u00f3n se ha aplicado la metodolog\u00eda del Nuevo M\u00e9todo Austriaco (NATM), que consiste en un proceso c\u00edclico y secuencial de excavaci\u00f3n convencional y colocaci\u00f3n simult\u00e1nea de un revestimiento primario que confina el terreno lo suficiente hasta conseguir estabilizar la excavaci\u00f3n.En fase posterior se aplica el revestimiento secundario, con el objetivo de dar respuesta a las condiciones de servicio del t\u00fanel. La excavaci\u00f3n se realiza mediante medios mec\u00e1nicos, quedando constituidos los elementos del revestimiento por mallas electrosoldadas, marcos reticulados y hormig\u00f3n proyectado, como elementos de soporte b\u00e1sicos, contando con la colaboraci\u00f3n de paraguas en aquellos tramos especiales en los que se requiere un mayor confinamiento del frente de la excavaci\u00f3n.<\/p>\n<p>Sin duda, la complejidad geot\u00e9cnica de este tramo ha marcado todo el desarrollo del proyecto desde sus inicios, obligando a adoptar de forma continua medidas correctoras seg\u00fan lo ha ido demandando el avance de la obra, como lo demuestran las m\u00e1s de 10 revisiones y modificaciones que ha sufrido la primera tramificaci\u00f3n de sostenimientos proyectada para el t\u00fanel interestaci\u00f3n, basada en la estratigraf\u00eda de los materiales a atravesar. Es por todo ello que se ha tenido que contar con expertos ge\u00f3logos y especialistas que verifican en cada uno de los avances de frente los materiales encontrados, para as\u00ed determinar el sostenimiento a emplear en la siguiente longitud de excavaci\u00f3n.<\/p>\n        <\/div>\n    <\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":3570,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","nivel-2":[968,987,1002,1014,2091,1056,1059],"nivel-5":[2149],"nivel-1":[2168],"nivel-3":[1256],"nivel-4":[],"class_list":["post-3569","new","type-new","status-publish","has-post-thumbnail","hentry","nivel-2-estacion-de-metro","nivel-2-infraestructuras","nivel-2-metro","nivel-2-operaciones-ferroviarias","nivel-2-proyectos","nivel-2-trenes","nivel-2-tuneles","nivel-5-ferrovial-construccion","nivel-1-construccion","nivel-3-chile"],"acf":[],"yoast_head":"<title>Finaliza la excavaci\u00f3n de los t\u00faneles de metro de la 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