«Straight-through» expressway through the Alps - Austria
DOI:
https://doi.org/10.3989/ic.1979.v32.i311.2472Abstract
This article deals with the construction procesa of the «straight» expressway through the Tauern AIps, where several engineering works deserve special mention: — The Tauern Tunnel, 6.4 km In length. — The Katschberg Tunnel, 5.4 km In length. — The Eben-Pongan cloverleaf. — The Liesertal stretch, 75 per 100 of its length being tunnels and viaducts. The most important of this Is the Tauern Tunnel where, owing to the serious problems encountered in the brittle character of the soil, the Austrian tunnel excavation process was used, this method consisting in tensing the mountain soil in order to be able to counteract the high pressures occurring. This tunnel has a 600 m long, 11 m diameter ventilation shaft, the largest of its kind in the World.
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