Istanbul Metro: Otogar-Baðcilar Extension (Istanbul, Turkey)
Jan 29, 2007
The Joint Venture of Gülermak-Doðuþ is proceeding with the construction of the tunnels for the expansion expansion of the Istanbul Metro.
The joint venture of Gülermak-Dogus has completed 659 Rings (about 990 m) of a planned 3900 rings. The EPB TBM will be completing Twin Tunnels of 2,950 meters for a total bore of 5,900 meters. The TBM is driving through clay, silt and sands with a maximum expected EPB pressure of 5 bar.
Production records to date show mining times of 17 to 22 minutes and shift averages of 10 rings installed in a 12 hour period.
Gülermak-Doðuþ has also purchased 2 additional Lovat RME257SE EPB TBMs for Metro Istanbul’s Baðcilar-Baþak Konutlari Extension: TBM S2 is in transit to site and S3 is currently under manufacture at the Lovat Plant, in Toronto, Canada.
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