Experience gained from the restoration of the water table at the Brixlegg tunnel / Erkenntnisse aus der Bergwasseraufspiegelung im Tunnel Brixlegg
|Issue:||"Geomechanics and Tunnelling", 2009, n. 6 v. 2|
For the construction of the 4.2 km long Brixlegg tunnel, it was necessary to lower the water table by 50 m inside the mountain. This proved to have a bad effect on the artesian mineral and healing water springs at Bad Mehrn. To protect these, the responsible water authority prescribed a lining of the tunnel waterproof to 6 bar, in order to ensure that the groundwater table could rise again after the completion of tunnelling.
|Keywords:||construction drainage, side drainage, lateral seepage of water, filter body, aquifer water, pressure-tight tunnel lining|
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