Zentrale Technik

Stuttgart Mühlhausen, Germany

Zentrale Technik

Stuttgart Mühlhausen, Germany
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Frodl S.,Zentrale Technik | Franzius J.N.,Zentrale Technik | Bar T.,OBB Infrastruktur AG Geschaftsbereich Unterinntal
Geomechanik und Tunnelbau | Year: 2010

On contract H8 - Tunnel Jenbach on the northern approach route to the Brenner Base Tunnel, a 54 km section of tunnel is currently being equipped with a geothermal system making use of energy lining segments, which enable the laying of absorber pipework in the TBM-driven tunnel. The system will be able to supply energy to the building yard in Jenbach though a connection in the emergency exit shaft. The design of the geothermal energy system covers the design of the energy segments, the sizing of the geothermal system, the installation of the segments in the tunnel and connecting them together in the tunnel and the laying of the connection pipework. Various restrictions resulting from the practicalities of tunnel construction had to be taken into account in the geothermal system. This article describes the experience gained during the design phase and the current state of the works. Then follows a discussion of the conditions for the future application of geothermal systems in tunnels. © 2010 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin.


Mayer P.-M.,Zentrale Technik | Frodl S.,Zentrale Technik | Friedemann W.,Zentrale Technik | Jouaux R.,Zentrale Technik
Geomechanik und Tunnelbau | Year: 2010

Construction time and project risks in mechanized tunnelling are determined to a great extent by the number and difficulty of the cross passages and emergency exits. This article presents innovative solutions that lead to more flexibility in ground freezing measures, enable a high-quality watertight connection between the cross passage and the running tunnels and permit the simple coupling of segments under high overburden pressures. Either experience from completed projects or results of tests on construction elements is available for the proposed solutions. © 2010 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin.

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