Remember the first TBM that made a breakthrough at the Delhi Metro’s upcoming Pink line’s Naraina Vihar station from the Delhi Cantt. side on October 5? After the 2nd TBM made a breakthrough here a couple days back , the J Kumar-CRTG & Terratec (TBM manufacturer) teams yesterday focused their attention back on the first TBM, and have started dragging it across the station shaft (~200 meters) using hydraulic jacks on guide rails so that it can tunnel northwards towards the Mayapuri shaft to make a roughly 310 meter long tunnel.
Satellite imagery of the Naraina Vihar station
The dragging maneuver will take up to 20 days after which it will then begin a 2 month long journey to the Mayapuri shaft shown below. The other TBM (seen in the background of the 2nd image) will then also be dragged across the station in a similar fashion.
For more updates on Delhi Metro’s Phase III, please visit the Delhi section of The Metro Rail Guy!