Mumbai Metro’s Nayanagar Shaft Gets Ready for 1st TBM

After finishing excavation, workers from the CEC-ITD Cem-TPL JV have lowered a cradle into Mahim’s Nayanagar Shaft in order to lower, assemble and commission TBM S1073 – the first Tunnel Boring Machine for Mumbai Metro’s 33.5 km Line-3.

TBM S1073, a 110m long Herrenknecht earth pressure balance machine, passed factory acceptance testing in China in June, arrived disassembled at Mumbai Port in early September, and has since been lying adjacent to the 25 m deep shaft waiting to get lowered into it. Maharashtra’s Chief Minister Devendra Fadnavis is tentatively scheduled to witness the TBM’s assembly on September 21, but actual tunneling work (ring building activity) towards Shitladevi Station, part of the 6.081 km package UGC-04 between Worli-Dharavi, will commence only in October.

Location of UGC-04’s Nayanagar Shaft – view Mumbai Metro map & information

Cradle for TBM

S1073’s front & mid shields

For more updates, check out the Mumbai section of The Metro Rail Guy!


written by

Global traveler who prefers mass rapid transit

13 Responses to "Mumbai Metro’s Nayanagar Shaft Gets Ready for 1st TBM"

  1. ABC says:

    Can you share the site’s coordinates? My son would love to see it.


    This must be a midshaft because no diaphragm wall’s have been built,shaft built by secant piling!

  3. Rohit Kamat says:

    All the best…. You contractors Rock

  4. Ankit Kumar says:

    Which company crane are they using for unloading

  5. Rak says:

    What are the tall steel towers and cross-beams for?

    • TMRG says:

      For the rolling gantry crane to move around the shaft. In the last pic, you can see one of its tracks in the bottom-right corner.

  6. Kaushik says:

    How many TBMs are being used for the entire line? Is this the first TBM to be lowered?


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