Tunnel Boring Machine (TBM) Excavation by TBM - 85.529 km It provides a safer and less disturbing drill to the surrounding area The drilling is faster than traditional techniques.
Tunnel Boring Machine (TBM) Number of TBMs used: 4 Total length: 440 m (including back-up equipment) Total weight: 3,000 tons Max. excavation daily: 25–30m (in excellent rock conditions)
Excavation by blasting (conventionaldrive) 66.311 km - 43.7 % (Sections of the main tunnel , cross passages, access tunnels, etc.) Excavation diameter in tunnel section with drive by blasting (only single track tunnels) - 8.80 - 13.08 m
Different numbers and facts Regular distance between single tunnels - 40 m Max. Distance between single tunnels - 70 m Number of cross passages total - 176 pieces Regular distance between cross passages - 312.5 m Maximum work temperature - 28° C Persons employed, including engineers, geologists, etc. - 2600
By 2016... In December, the construction is expected to be completed. Trains per day: 200–250 Amount of excavated rock: 28,200,000 tons Total cost: CHF 9.74 billion (as of October 2010) (US$10.1 billion)