On this Tuesday, the J Kumar-CRTG JV started tunneling on the Delhi Metro’s new Pink line’s down-line tunnel between the Naraina Vihar station and the Mayapuri shaft! This 310m tunnel section in south-west Delhi is part of the Delhi Cantonment to Mayapuri section (CC-20) of the 58.59 km Pink line which is being constructed as part of the 159 km Phase 3 project.
This TBM had made a breakthrough at Naraina Vihar from Delhi Cantt on October 5 after which it was dragged across the station’s length (~200m) using hydraulic jacks over a period of roughly 18 days. Many images of the contractor dragging the TBM can be viewed here.
Satellite imagery of the Naraina Vihar station from where the TBM was launched:
Alignment of this section:
If you notice, they only placed 1 temporary ring at the mouth of the tunnel as opposed to 3+ typically found at other locations.
This 310m tunneling drive should realistically not take more than 3 months to be completed and I expect it’ll make a breakthrough sometime in February 🙂
For more updates on Delhi Metro’s Phase III, please visit the Delhi section of The Metro Rail Guy!