TBM 1239 Makes a Breakthrough for Mumbai Metro Line-3 at Worli

This afternoon, tunnel boring machine 1239 operated by Doğuş-Soma JV recorded a breakthrough at the southern-end of Worli Station for package UGC-03 of Mumbai Metro’s 33.5 km Line-3 (Aqua Line) .

This Ø6.65m new Robbins slurry machine, nicknamed Tansa-2, was commissioned in November 2018 from the Science Museum Station to build the 2057m down-line tunnel towards Worli. Along the way, it passed through Acharya Atre Chowk Station’s box which wasn’t ready in time to receive the machine, so the rings built over there will be dismantled during excavation.

This was 1239’s first (and penultimate) breakthrough, Doğuş-Soma JV’s second breakthrough for the 5.06 km Mumbai Central – Worli package UGC-03, and overall Line-3’s 28th breakthrough.

Route of Aqua Line’s Package UGC-03 (Mumbai Central – Worli) – view Mumbai Metro information & map
breakthrough! – Photo Copyright: Saraswati Traders
Photo Copyright: Dileep
Photo Copyright: Dileep
Photo Copyright: Dileep

Post-retrieval, the TBM’s shields are expected to be retrieved and transported as one unit, in the interest of time, just like how its sister-machine TBM 1238’s was done earlier this month.

Package UGC-03 now has 4 more breakthroughs pending. Here’s a table displaying its tunneling plan (best viewed on a desktop device) and the status of each tunnel –

1UpScience MuseumWorli2072mCompleted
Jan 2020
1UpScience MuseumMahalaxmi1118mPending
2DownScience MuseumWorli2057mCompleted
2DownScience MuseumMahalaxmi1136mPending
3UpMumbai CentralMahalaxmi837mPending
3DownMumbai CentralMahalaxmi830mPending

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


written by

Global traveler who prefers mass rapid transit

4 Responses to "TBM 1239 Makes a Breakthrough for Mumbai Metro Line-3 at Worli"

  1. Rupraj Sengupta says:

    It seems Kolkata east west metros esplanade sealdah 2400mts,tunneling distance will be the longest in India!Because a politician’s ego made it go for a realignment!

    • TMRG says:

      Yeah. How I wish there was another station planned in the middle, especially since that section of the line passes through the core of the city.

      With all the demolitions at Bowbazar taking place to remove fragile buildings and create a mid-shaft, this could have been a perfect opportunity.

  2. Ananya says:

    Congrats to my friends Yigit, Ibrahim and Samil from Dogus team. Good job.


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