After TBM S52, workers from the Tata – Gülermak JV earlier this week also started lowering parts of TBM S53 into the 22m deep Bapu Bhawan Shaft adjacent to the Sachivalaya (State Secretariat) Station’s site.
This Ø6.52m Earth Pressure Balance (EPB) TBM’s parts are currently being assembled and is expected to be commissioned in early February 2017. It will follow TBM S52, its sister Terratec machine which’ll be commissioned within the next 5 days, on a 780 meter journey towards Hazratganj Station (see tunneling plan) and build the 22.878 km north-south line’s up-line tunnel.
In the coming weeks, more parts (eg. segment erector, back-up gantry system) will be lowered into the shaft. As and when that happens, I’ll add more images here, so do check back!
For more updates, check out the Lucknow section of The Metro Rail Guy!