2’100 m long (135 m²) double track railway tunnel (332’000 m³)
Geology: Basalt and Rhombic porphyry
Excavation methods: drill & blast, pipe umbrella advance (60 m)
Injection: 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.)
Inner lining with concrete elements, 51’350 m², PE-foam & shotcrete, 12’360 m², membrane & shotcrete, 2’700 m²
Sheet piling in the portal area
Concrete portal 50 m
