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Gotthard Base Tunnel

Switzerland

All-hydraulic forming of complex cross-section! The 7400 m long Erstfeld contract section is the northern part of the Gotthard Base Tunnel, also including the construction of two 400 m long underground branch-offs built using the drill-and-blast method followed by CIP concrete lining.

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Project data

Year of completion
2011
Project duration
10 Months
Country
Switzerland
Address
Erstfeld
Realization
JV 'ARGE AGN'
Structure
Tunnel
Type of structure
Mining-type tunnel

Floor-slab

Construction method
Segmented (non-monolithic)
Cross-sectional shape
Curved/round
Clear width
17.65 m
Clear height
10.40 m
Formed length of tunnel
370 m
Length of concreting section
10 m
Number of casting sections
37

Wall

Construction method
Segmented (non-monolithic)
Clear height
5.65 m
Formed length of tunnel
370 m
Length of concreting section
10 m
Number of casting sections
37