Employer
Nant de Drance SA, CH-1925 Finhaut
Designing Engineer and Site Supervision
AF-Consult Switzerland Ltd,
CH-5405 Baden-Dättwil
Time of Completion
2008 – 2018
Contract Sum
USD 900 million
Execution of the Works
GMI Groupement Marti Implenia
Consortium Partners
Marti Tunnelbau AG, CH-3302 Moosseedorf
Implenia Bau AG, CH-5000 Aarau
Lead Company and Technical Lead
Marti Tunnelbau AG, CH-3302 Moosseedorf
Commercial Lead
Implenia Bau AG, CH-5000 Aarau
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Scope of the Works
Pump storage plant Nant de Drance
- Power 900 MW
- Access Tunnel L = 5’600 m
- 2 independent pressure tunnels of 1’500 m each
- 2 vertical shafts: H = 430 m
- Caverns for turbines and transformers
- Several access galleries: L = 4’500 m
- Intake and discharge galleries
- Dam elevation Vieux Emosson
Activities
- Access tunnel excavation with hard rock TBM: D = 9.40 m
- Excavation of caverns and galleries with drill and blast method
- Injection and consolidation grouting
- Tunnel lining and structural works
- Production of concrete aggregates and concrete
- Landfill and spoil dump management.
Contact
Marti Headquarters LatAm
Nueva de Lyon 145
Providencia, Santiago de Chile
Tel. +562 2957 4253
Fax +562 2957 4304
info-latam@marti.com
