Gotthard base tunnel

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Gotthard base tunnel

  1. 1. Gotthard Base Tunnel World’s longest rail tunel Ricardo Loureiro n. 53584 Class LC11D Inglês 2012/13 Prof. Luís Amaral
  2. 2. Overview
  3. 3. Main goals To increase the capacity on railroad transportation To reduce the pollution caused by the trucks that pass by the Alps To reduce the travel times.
  4. 4. Specifications Length:  Western tunnel: 56.978 km  Eastern tunnel: 57.091 km  Total length of all tunnels and shafts: 151.84 km Diameter of each of the single-track tubes: 8.83–9.58 m
  5. 5. Specifications Start of construction: 1993 (sounding drills), 1996 (preparations), 2003 (mechanical excavation) End of construction: 2016
  6. 6. Tunnel scheme TBM
  7. 7. Tunnel Boring Machine (TBM)
  8. 8. Tunnel Boring Machine (TBM)
  9. 9. 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.
  10. 10. 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)
  11. 11. 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
  12. 12. 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
  13. 13. 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)

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