News & Infos Cavern area
Parking niches and cavern were constructed by conventional method after completion of TBM excavation
News & Infos Inner lining
Ground support was performed conventionally with sprayed concrete, lattice girder, wire mesh and rock bolts.
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Tunnel Pfänder

This project consists of the new construction of the 2nd tube and the restoration of the existing 1st tube. The excavation of the new tube is made by TBM. Cross passages, ventilation shafts, parking niches and ventilation caverns were executed by conventional tunnelling method.


The tube has a double lining with reinforced segments and unreinforced inner concrete with a thickness of 28cm. The niches area is built with a 40-60cm thick reinforced inner lining.

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