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Project information
Jet-vent tunnel - Lötschberg
One cylindrical and one conical
travelling tunnel-formwork unit for
4 ventilation tunnels
Project data
Type of building: tunnel
Method: mining method
Location: Frutigen, Switzerland
Formwork system: Large-area formwork Top 50
Duration of insert: 2 months
Building data
Purpose of the tunnel: railway
Section: circular
inside width (m): 8,66 m / 8,66 m - 7,62 m
inside height (m): 7,95 m / 7,95 m
Formed tunnel length: 100 m
Steps: 12 / 8
Additional info
After forming the cone at one end of the jet-vent
tunnel, the site crew turned the tunnel-formwork
unit 180° on a "turntable" fastened to the ground,
and then formed the opposite cone.
Contractor
Arge SATCO - Schweizer Alp Transit Consortium
Contact: Mr. Häfliger
www.satco.ch
Formwork design
Organisation in Country: Holzco-Doka
Technical Manager: Mr. August Morf
Department Amstetten: Tunnel Expertise Centre
Project Manager: Mr. Martin Wenger
  E-Mail: tunnel@doka.com
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