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Author(s):	Pacher, F.; Cottogni, I.; Stegbauer, T.
Title:
Abstract:	The construction of the second bore of the Bosruck Tunnel is very much influenced by the experience gained in the first bore, which affects the tunnel advance and also support. The west bore has a total length of 5,424 m and is being sequentially tunnelled from both portals at the same time. In addition to the main tunnel, there are eleven crosscuts to be excavated. The article reports on the start of work from the beginning of January 2010 until September 2010 and gives an overview of the schedule and work preparation for the forthcoming excavation and support works in the various rock formations. Der Bau der zweiten Röhre des Bosrucktunnels ist von den Erfahrungen der ersten Röhre sowohl beim Vortrieb und der Sicherung als auch beim daran nachfolgenden Innenausbau geprägt. Die Weströhre hat eine Gesamtlänge von 5.424 m und wird im zyklischen Vortrieb von beiden Portalen aus gleichzeitig vorgetrieben. Zusätzlich zum Haupttunnel sind noch elf Querschläge aufzufahren. Der Beitrag fasst die ersten Erfahrungen aus dem Vortrieb von Baubeginn Anfang Januar 2010 bis zum September 2010 zusammen und gibt und einen Ausblick über die Ablauf- und Arbeitsvorbereitung der noch anstehenden Ausbruch- und Sicherungsarbeiten in den unterschiedlichen Gebirgsformationen.
Source:	Geomechanics and Tunnelling 3 (2010), No. 6
Page/s:	719-726
Language of Publication:	English/German

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