Employer
BLS AlpTransit AG, CH-3601 Thun
Designer
Gruppo d’ingegneri IGWS, CH-3900 Brig
Time of Completion
10.2000 – 04.2006
Contract Sum
CHF 600 Mio.
Execution of the Work
ARGE MaTrans
Consortium Partners
Marti Tunnel AG, CH-3302 Moosseedorf
Walter Gruppe, DE-86150 Augsburg
Porr AG, AT-1100 Wien
Balfour Beatty Ltd., UK-E14 5HU London
Lead Company and Technical Lead
Marti Tunnel AG, CH-3302 Moosseedorf
Commercial Lead
Porr AG, AT-1100 Wien
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Scope of the Works
Base tunnel (double-track railway tunnel NEAT) /
Lötschberg railway line
Principal advances:
- Access tunnel Steg and west tunnel
L= 8’925 m with a TBM
- Base tunnel west Raron - Lötschen
L= 4’600 m with drill and blast
- Base tunnel east Raron – Ferden
L= 10’005 m with TBM
Supplementary constructions
- Cross connections: 20 pieces, A= 18 m²
- Connecting caverns Lötschen
L= 296 m, V=21'700 m³, A= 64 - 75 m²
- Track change Lötschen West
- L= 199 m + 82 m
- Operation center Lötschen West
L= 50 m, V= 12'000 m³
- Pre-cuts, retaining walls, bridge
Activities
- TBM drive: Ø= 9.43 m
- Rock support with rock bolts, wire mesh, shotcrete, reinforcement beam
- Pipe umbrella excavation
L= 35 m, A= 92 - 104 m²- D&B excavation: Rock support with rock bolts, wire mesh, shotcrete, steel arches
- Cast in plase concrete lining
Contact
Marti Tunnel AG
Seedorffeldstrasse 21
CH-3302 Moosseedorf
Tel. +41 31 388 75 10
tunnel@martiag.ch
