Employer
Federal roads office FEDRO, CH-6500 Bellinzona
Designer
IG Nuovo Gottardo, c/o Lombardi SA, CH-6512 Bellinzona-Giubiasco
B + S AG, CH-3016 Bern
ILF Beratende Ingenieure AG, CH-8048 Zürich
Emch + Berger AG Bern, CH-3001 Bern
Construction Period
03.2021 - 09.2023
Execution of the Work
Consorzio Cunicolo Gottardo
Consortium Partners
Marti Tunnel AG, CH-3302 Moosseedorf
Mancini & Marti SA, CH-6500 Bellinzona
Ennio Ferrari SA, CH-6527 Lodrino
Lead Company – Technical and Commercial Lead
Marti Tunnel AG, CH-3302 Moosseedorf
More…
Less…
Scope of the Works
Access tunnel south to the fault zone "Guspis-Zone" (construction phase) and ventilation tunnel (operational phase) for the second Gotthard tube (2TG).
Activities
- Excavation with a single shield TBM, Ø 7.42 m, with single-shell segment lining (6+0), d = 27 cm and simultaneous lining of the carriageway (base).
- Trench excavation, portal, 5,700 m³
- Advance in loose rock with pipe screen protection,
78 m, 62 - 85 m², 5'730 m³- Drill and Blast, 17 m, 60 m², 1'020 m³
- Advance by TBM, Ø = 7.42 m, 43 m², 4,920 m, 212,750 m³
- Excavation of lateral logistics niche every 450 m,
10 pieces at 600 m³
Geology
- Triassic
- Mica gneiss
- Amphibolite
- Rotondo granite
- Guspis zone
Contact
Marti Tunnel AG
Seedorffeldstrasse 21
CH-3302 Moosseedorf
Tel. +41 31 388 75 10
tunnel@martiag.ch