L&T’s TBMs Pass Through Mumbai Metro’s Hutatma Chowk Station

After recording breakthroughs in October by Surya-2 and November by Surya-1, Larsen & Toubro – Shanghai Tunnel Engineering Company (L&T – STEC) JV has started moving both tunnel boring machines through Hutatma Chowk Station on Mumbai Metro’s 33.5 km Aqua Line (Line-3).

Both of these Robbins Crossover XRE TBMs, with a 6.65 meter diameter, have just one more tunneling assignment left and that is to complete the twin tunnels towards Chhatrapati Shivaji Terminus (CST) – a distance of 551m on the up-line tunnel and 556m on the down-line tunnel.

While Surya-1 on the up-line is being dragged through the station’s 233m cut & cover box using hydraulic jacks towards its northern-end, Surya-2 on the parallel down-line is tunneling through the station’s NATM-mined tunnel – generating the most unique tunneling sight in India. I really hope either one of Robbins, L&T or Mumbai Metro Rail Corporation (MMRC) is filming a time-lapse as it moves through.

Package UGC-01: Cuffe Parade – CST – view Mumbai Metro Aqua Line info & route map
Hutatma Chowk Station’s NATM-mined down-line tunnel (left) and cut & cover station box for the up-line tunnel (right)

More on details on the unique Hutatma Chowk Station can be viewed here.

Toothless Surya-1 getting dragged through the cut & cover box
Surya-2 tunneling through the NATM-mined tunnel

After Surya-2 passes through Hutatma Chowk Station’s vicinity, workers will dismantle the tunnel rings built by it. What you’re seeing above and below is the station’s future down-line platform area.

Looking towards Hutatma Chowk Station’s northern-end

Surya-1 is scheduled to be recommissioned towards CST Station by mid January. Here’s a status of package UGC-01 between Cuffe Parade and CST stations where 2 breakthroughs are pending. This table is best viewed on a desktop device –

TBMLineFromToDistanceStatus
1UpCuffe ParadeVidhan Bhavan1128mCompleted
1UpVidhan BhavanChurchgate498mCompleted
1UpChurchgateHutatma Chowk649mCompleted
1UpHutatma ChowkCST551mYet to Begin
2DownCuffe ParadeVidhan Bhavan1254mCompleted
2DownVidhan BhavanChurchgate481mCompleted
2DownChurchgateHutatma Chowk653mCompleted
2DownHutatma ChowkCST556mYet to Begin

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

– TMRG

written by

Global traveler who prefers mass rapid transit

6 Responses to "L&T’s TBMs Pass Through Mumbai Metro’s Hutatma Chowk Station"

  1. Anonymous says:

    ❤️

    Reply
  2. Metro mania says:

    Nice. Appreciate your interest and enthusiasm — and your kindness in sharing updates with the aam aadmi! Keep it up.

    Reply
  3. Mr sushil Garodia says:

    Please make trial runs of metro 3 originating from sidhinnayak temple ganpati Napa will remove all hurdle like metro shed

    Reply

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