As many as nine tunnel-boring machines (TBMs) will be deployed to build the 13.92-km-long tunnel network from Dairy Circle to Nagawara by Bangalore Metro Rail Corporation Ltd. (BMRCL). The underground stretch is part of Namma Metro’s Gottigere–Nagawara line (Reach 6 of Phase II).
The BMRCL has set 2023 as the target to complete the tunnel work, which includes the construction of 12 underground stations. In Phase I, six TBMs had been deployed for building 8.82-km tunnel network (from Sampige Road to National College and M. Chinnaswamy Stadium to Magadi Road).
The tunnelling work in the Phase I got delayed for years owing to various reasons such as hard rock and breaking down of TBMs. The BMRCL had taken over five years to complete the work. Read More