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Author(s):	Gobiet, Gerhard; Nipitsch, Gernot; Wagner, Oliver K.
Title:	The Semmering Base Tunnel - Special challenges in construction / Der Semmering Basistunnel - Besondere Herausforderungen beim Bau
Abstract:	The Semmering Base Tunnel (SBT) is about 27.3 km long and is being driven from the portal at Gloggnitz and from three intermediate construction accesses in Göstritz, Fröschnitzgraben and Grautschenhof. The main components of the tunnel system are the two single-track running tunnels, cross passages at a maximum spacing of 500 m and an emergency station in the middle tunnel section, with two shafts about 400 m deep for ventilation and extraction in case of an incident. For organisational, scheduling and topographical reasons, the tunnel is divided into three construction contracts. The eastern contract section SBT1.1 “Tunnel Gloggnitz” has been under construction since mid 2015. Construction started on contract section SBT2.1 “Tunnel Fröschnitzgraben” at the start of 2014. The western contract section SBT3.1 “Tunnel Grautschenhof” has been under construction since May 2016. Der ca. 27,3 km lange Semmering-Basistunnel (SBT) wird vom Portal Gloggnitz aus und über die drei Zwischenangriffe Göstritz, Fröschnitzgraben und Grautschenhof aufgefahren. Die Hauptbestandteile des gesamten Tunnelsystems sind zwei eingleisige Tunnelröhren, Querschläge mit einem Abstand von maximal 500 m und eine Nothaltestelle im mittleren Tunnelabschnitt mit zwei ca. 400 m tiefen Schächten zur Be- und Entlüftung im Ereignisfall. Aus organisatorischen, terminlichen und topographischen Gründen ist der Tunnel in drei Baulose unterteilt. Das östlichste Baulos SBT1.1 “Tunnel Gloggnitz” befindet sich seit Mitte 2015 in Bau. Der Baubeginn im mittleren Baulos SBT2.1 “Tunnel Fröschnitzgraben” erfolgte Anfang 2014. Das westlichste Baulos SBT3.1 “Tunnel Grautschenhof” wird seit Mai 2016 gebaut.
Source:	Geomechanics and Tunnelling 10 (2017), No. 3
Page/s:	291-297
Language of Publication:	English/German

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