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Final breakthroughs for Seli in Milan 31 Jul 2013
TunnelTalk reporting
Two TBMs manufactured and operated by Italian company Seli have completed their current excavations works on the Line 5 metro extension project in Milan.
TBM breathrough at the Senisio Station

TBM breathrough at the Senisio Station

The two EPBMs of 6.79m diameter were operated by Seli on behalf of the Astaldi/Ansaldo Breda/ATM/Alstrom JV and recorded their final breakthroughs at the Pozzo Orafi Station at TreTorrion Saturday 15 June and Friday 26 July respectively.
Excavation began in November 2012 at the Monumentale Station and progressed for a length of 1,930m, passing through the three intermediate stations of Cenisio, Gerusalemme and Domodossola.
The final breakthrough of TBM S-238 on 26 July concludes Seli's current excavation works for the Milan Metro project. The two TBMs broke through on the third of four drives at Domodossola Station on 4 May and 20 May respectively. TBM1 was relaunched for its final 370m drive on 29 May (2013) and TBM2 restartedin mid-June.
In total Selihas completed 2.2km of twin running tunnels between Monumental Station and Tre Torri as part of an overall US$1.2 billion 6.7km LRT metro extension to Line 5 between Garibaldi and San Siro. The geology encountered along the alignment consisted of fluvio-glacial deposits and gravel in a sandy matrix.
The eastbound drives for the Line 5 extension between San Siro and Tre Torre are being completed using two additional TBMs. The total 10-station extension is expected to be completed and in service in time for EXPO 2015.
A feasibility study for a further 6.3km Line 5 extension between Bignami and Monza has been completed, while 9.7km and 14.8km extensions are planned for Lines 2 and 3 respectively.
References
Closing in on final breakthroughs in Milan - TunnelTalk, June 2013
Pushing ahead with Milan metro Line 5 - TunnelTalk, March 2013

           

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