TBM 1238 Makes a Breakthrough for Mumbai Metro Line-3 at Worli

On January 29, tunnel boring machine (TBM) 1238 operated by Doğuş-Soma JV recorded the very first breakthrough for package UGC-03 of Mumbai Metro’s 33.5 km Line-3 (Aqua Line) at the southern-end of Worli Station.

The Ø6.65m refurbished Robbins NFM slurry machine, nicknamed Tansa 1, completed factory acceptance tests in August 2017 and was commissioned from the Science Museum Station a year later on August 17, 2018 to build the up-line tunnel.

During its 15 month journey, it traveled a distance of 2072 meters and erected 1381 rings (1 ring = 5 segments + 1 ‘key’ segment). 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.

Route of Line-3’s Package UGC-03 (Mumbai Central – Worli) – view Mumbai Metro information & map
Workers preparing to receive the machine – Photo Copyright: Muhammad Sheikh Javeed
Breakthrough! – Photo Copyright: Muhammad Sheikh Javeed
Photo Copyright: Muhammad Sheikh Javeed
Photo Copyright: Muhammad Sheikh Javeed
Workers preparing to retrieve and dismantle – Photo Copyright: Muhammad Sheikh Javeed

This is the first of 6 breakthroughs planned for UGC-03 and the 25th for Line-3. The next one on UGC-03 by TBM Tansa-2, also at Worli Station, is expected in April 2020. From here on, Tansa-1 will be dismantled and re-commissioned from Science Museum towards the Mahalaxmi Station.

Here’s a table displaying UGC-03’s tunneling plan (best viewed on a desktop device). There are unconfirmed talks of L&T-STEC JV being roped in to deploy one machine used previously to build and complete package UGC-07 (Marol Naka – Aarey Colony Ramp) to assist with completing this section. I’ll write or tweet about it when confirmed.

TBMLineFromToDistanceStatus
1UpScience MuseumWorli2072mCompleted
1UpScience Museum Mahalaxmi1118mPending
2DownScience Museum Worli 2057mIn Progress
2DownScience Museum Mahalaxmi 1136mPending
3UpMumbai CentralMahalaxmi 837mPending
3Down Mumbai CentralMahalaxmi 830mPending

Upcoming breakthroughs in February include:

• Package UGC-04: Siddhivinayak → Worli (down-line tunnel, 1284m)
• Package UGC-05: BKC → Dharavi (down-line tunnel, 1504 m)

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

– TMRG

written by

Global traveler who prefers mass rapid transit

5 Responses to "TBM 1238 Makes a Breakthrough for Mumbai Metro Line-3 at Worli"

  1. Rupraj Sengupta says:

    Is this the 26th breakthrough of Mumbai metro line 3,one after another breakthrough I am confused a little!

    Reply
  2. Muhammad Sheikh Javeed says:

    CONGRATULATIONS OUR TBM TEAM AND OUR ALL ENGINEERS AND MANAGERS, ESPECIALLY MR, MURAT SIR .

    REGARDING
    MUHAMMAD SHEIKH JAVEED
    THANKYOU

    Reply

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