Large-Diameter EPB Metro Circle Line
Eastern Europe
5 x 6.28 m
CRCHI EPB TBMs
10.88 m
Large-Diameter EPB
433.8 m
Monthly Advance Record
Clay and limestone
Geology
CRCHI supplied multiple EPB shield TBMs for a large underground metro circle line, one of the longest of its kind. CRCHI delivered five 6.28 m EPB machines for earlier drives and a 10.88 m EPB for the larger-diameter alignment, where the fleet set a productivity record of 433.8 metres advanced in a single month.
