Tunnel Ground Freezing at Bern Main Station
- Gewerk: Gefrier- und Injektionsverfahren
- Projektstatus: Inaktiv
- Land: Switzerland
- Stadt: Bern
- Auftraggeber: Frutiger AG
- Latitude: 46.9481
- Longitude: 7.4391
- Dauer: 2020
- Projektbericht (PDF): 2020_Referenz_Tunnelgefrieren Hauptbahnhof Bern.pdf
For the underground expansion of Bern railway station, an access tunnel was planned through water-bearing, unstable unconsolidated ground beneath active railway tracks. To enable conventional mining advance, THYSSEN SCHACHTBAU was commissioned to carry out a complex ground-freezing operation. The work included horizontal directional drilling over 2,600 m in extremely confined conditions, the operation of a 1,000 kW freezing plant, and continuous monitoring of ground temperatures via an online platform using fiber-optic measurement technology. The execution took place parallel to ongoing station operations and under highly demanding logistical conditions.
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