Employer
Office of Civil Engineering of the Canton of Ticino,
CH-6500 Bellinzona
Designer
Ingenieurgemeinschaft DL-2010
Lombardi SA, CH-6648 Minusio
Construction Period
06.2007 – 08.2010
Contractor
Consorzio Marti Lugano
Consortium Partners
Marti Tunnel AG, CH-3302 Moosseedorf
Mancini & Marti SA, CH-6500 Bellinzona
Lead Company – Technical and Commercial Lead
Marti Tunnel AG, CH-3302 Moosseedorf
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Scope of the Works
Lot 0211-G4
Bidirectional motorway tunnel, part of the luganese beltway system.
- Excavation of a tunnel of a length of 2'350 m and a section of 73 - 86 m²
- Ventilation shaft of a height of 98 m and a diameter of 4 m including an access gallery and a ventilation cavern
- Reinforcement of the section where the tunnel will cross the Ceneri railroad tunnel (NRLA)
- 4 enlargements for security stop (every 600 m) of a length of 41 m and a section of 156 m² each
Activities
- Conventional rock excavation using a 3 arms jumbo; depending of the rock quality and other environment- tal reasons, excavation of the full or partial section
- The rock cover to the existing railroad Milano-Zürich being only 7 meters, the first phase was executed under the protection of a grouted pipe poling umbrella
- Rock support by means of shotcrete with fibers, rock bolts and/or steel sets.
- Internal lining membrane insulation and cast in place concrete
- Inserted ceiling for the final ventilation system and cast in place concrete for portal work
Geology
- Gneiss
- Chlorite schist with graphite layer
Contact
Marti Tunnel AG
Seedorffeldstrasse 21
CH-3302 Moosseedorf
Tel. +41 31 388 75 10
tunnel@martiag.ch
