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Home > Breakthroughs on Milan's Line 5

Breakthroughs on Milan's Line 5

Tris Thomas

Written by Tris Thomas on 20/03/2013 in News

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Both EPBMs boring the Milan Metro Line 5 twin-tube tunnels have successfully broken through at Cenisio station and are now progressing well along the rest of the drives, SELI has announced. TBM S-388 broke through at Cenisio station on 22/01/2013 followed by TBM S-238 on 16/02/2013. TBM S-388 is currently at 1,118.04m (of 2,193.09 or 51% of tunnel) whilst TBM S-238 is currently at 756.38ms (of 2,198.9 or 34% of tunnel)The Client, Astaldi Spa is excavating the tunnels using two EPBMS, one 6.79m diameter and the other 6.76m. The lining of the tunnel comprises 30omm thick, 1400mm long precast reinforced segments. Each ring has an outer diameter of 6.4m and an i.d. of 5.8m made up of 6 segments and a key.

Excavation began in August 2012 and is scheduled for completion in May 2014.

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