Advance Record at Brenner Base Tunnel
May 10, 2021
The miners in the Brenner Base Tunnel are pushing ahead rapidly with the major rail project. On Wednesday, March 31, 2021, they achieved a new record while excavating the main tubes in South Tyrol: 860 meters of tunnel bored and lined in one month.
The contracting joint venture BTC S.c.a.r.l. (Astaldi S.p.A., Ghella S.p.A., P.A.C. S.p.A. and Cogeis S.p.A.) thus achieved a peak advance rate at the Mauls jobsite. For March 2021, the Brenner Base Tunnel project owner, Austrian-Italian BBT SE, announced an average daily advance rate of 27.7 meters for "Virginia". The daily best performance was 36.75 meters.
Dr. Matthias Flora, Sales and Project Manager at Herrenknecht, congratulated the team on the jobsite: "Our customer BTC's crews are absolute top professionals in their field. Congratulations and our utmost respect for this achievement!" By early April 2021, the two machines in the Brenner main tunnels had already covered over 50% of the total distance toward their lot boundary. In stable geologies, Double Shield TBMs are predestined for good tunnelling performance. As the TBM bores, the excavated tunnel is concurrently lined with concrete segments.
Machine type: 2 x Double Shield TBM S-1071 / S-1072 (main tubes)
› Shield diameter: 10,650mm
› Drive power: 4,200kW
› Drive length: 2 x 14,000m
Machine type: 1 x Double Shield TBM S-1054 (exploratory tunnel)
› Shield diameter: 6,800mm
› Drive power: 2,800kW
› Drive length: 14,000m
› Geology: granite gneiss, granodiorite, mica schist, phyllite
› Client: Brenner Base Tunnel BBT SE
› Contractor: Consortium H61 Mauls 2–3, BTC S.c.a.r.l. (Astaldi S.p.A., Ghella S.p.A., P.A.C. S.p.A. and Cogeis S.p.A.)
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