Client
Jernbaneverket Utbygging
(Norwegian National Rail Administration)
Construction Period
04.2011 – 03.2015
Contract Sum
CHF 68 Mio. (NOK 414 Mio.)
Joint Venture Company
Marti ÍAV DA
Joint Venture Partners
Marti Tunnel AG, CH-3302 Moosseedorf
ÍAV hf, IS-110 Reykjavik
Lead Company and Technical Lead
Marti Tunnel AG, CH-3302 Moosseedorf
Commercial Lead
ÍAV hf, IS-110 Reykjavik
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Project description
The UHN 07 Snekkesatd project is the southernmost
2.5 km long construction lot of the double track railway
line between Holm and Nykirke, which aims to modern-
ize the Vestfold railway system. The main parts of the
project consist of:
- 2’100 m long (135 m²) double track railway tunnel
- 400 m of double track railway
- 320 m long (53 m²) adit/escape tunnel
- 380 m long (24 m²) escape tunnel
Work description
Underground excavation, rock support and grouting work
- Excavation methods: drill & blast, pipe umbrella
advance (60 m)
- Excavated length and volume: 2’995 m, 332’000 m³
- Grouting method: systematic cementous pre-grouting
- Grouting quantity: 208 rounds, 10’000 t of cement
- Standard rock support: shotcrete (9’930 m³) and
systematic rock bolts (19’600 pcs)
- Additional rock support: reinforced shotcrete arches
(36 pcs.), steel beams (57 pcs.)
Underground water and frost protection work
- Concrete elements lining: 51’350 m²
- PE-foam & shotcrete lining: 12’360 m²
- Spray applied membrane & shotcrete lining: 2’700 m²
Surface- and groundwork
- Sheet piling work in the portal area
- Roadwork
- Fresh water and drainage system
- Installation of cables pipes and channeling
Concrete work
- 3 technical buildings
- One 50 m long portal
Electrical work
Contact
Marti Tunnel AG
Seedorffeldstrasse 21
CH-3302 Moosseedorf
Tel. +41 31 388 75 10
tunnel@martiag.ch
