T-206 – 5th TBM for Mumbai Metro’s Line-3 Arrives at Mumbai Port

So before TBM T-61 made a touch down in Mumbai on Sunday evening, the city’s port in the morning in fact received parts of another tunnel boring machine, this time T-206 – a STEC machine which was previously deployed in Singapore and passed factory acceptance testing (FAT) for Mumbai Metro’s 33.5 km Line-3 in August. With that, I’ve renamed T-61’s post to #6 for factual consistency.

This refurbished Ø6.65m Earth Pressure Balance TBM is part of a 3 TBM order (2 refurbished and 1 new) which will be deployed by Larsen & Toubro and Shanghai Tunnel Engineering Company (L&T – STEC JV) to build twin tunnels on the line’s 4.157 km package UGC-07, between Marol Naka – MIDC – SEEPZ  – Aarey Colony Ramp, which was awarded by the Mumbai Metro Rail Corporation Ltd. in July 2016.

As per the tunneling plan, T-206 will exclusively be deployed to excavate and build three tunnels, all on the up-line –

Launch Site Destination Length
Pali Ground Shaft CSIA T2 1296m
Pali Ground Shaft MIDC 680m

The circular Pali Ground Shaft is located just north of the Marol Naka Station –

Package UGC-07 between Marol Naka – Aarey Colony Ramp – view Mumbai Metro map and info

Some images –

Front-shield – Photo Copyright: Rishi Kumar

Mid-shield – Photo Copyright: Rishi Kumar

Photo Copyright: Rishi Kumar

Backup gantry – Photo Copyright: Rishi Kumar

With T-206 and T-61 arriving on Sunday, now 6 out of 17 TBMs are in the city. Of those, TBM S-1073 was commissioned earlier this month while two TBMs are planned to be commissioned later this month –

• TBM T-58 at CST Station towards Kalbadevi Station on package UGC-02
• TBM S-1074 at Nayanagar Shaft towards Sitladevi Station on Package UGC-04

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


written by

Global traveler who prefers mass rapid transit

5 Responses to "T-206 – 5th TBM for Mumbai Metro’s Line-3 Arrives at Mumbai Port"

  1. V M says:

    Have any indian cos yet developed the skills to operate tbms independently of foreign partners ?

  2. Piyush says:

    Admin…. until now no update on how much distance covered by TBM S-1073?? Give some info about that.


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