Mumbai Metro’s TBM S-1074 Records Breakthrough at Dadar

Moments ago, Tunnel Boring Machine S-1074 (Krishna-2) operated by the Continental Engineering Corp – ITD Cementation – Tata Projects JV made a breakthrough at Dadar Station’s southern-end on Mumbai Metro’s 33.5 km Aqua Line (Line-3).

This was S-1074’s third (and final) breakthrough, 6.08 km Package UGC-04’s 7th of 8 planned breakthoughs for the Worli – Dharavi section, and overall Line-3’s 32nd of 41 planned breakthroughs.

This Herrenknecht TBM passed factory acceptance testing (FAT) in August 2017, and was commissioned in December 2017 to first build the 2472m down-line tunnel from Nayanagar Shaft to Dadar Station. After recording a double breakthrough along with its sister machine S-1073 in January 2019, it was recommissioned again from Nayanagar Shaft to build the 589m down-line tunnel towards Dharavi Station.

For its last assignment that ended today – the machine was dismantled and recommissioned from the other end of UGC-04 in December 2019 to build the up-line’s 1106 meter tunnel from Siddhivinayak Station to Dadar Station.

Route of UGC-04 (Worli – Dharavi) – view Mumbai Metro info & map

CEC-ITD Cem-TPL JV’s Package UGC-04 now has just 1 more breakthrough pending, also at Dadar Station for the parallel 1126 meter down-line tunnel. That breakthrough is expected to take place in December with another 520 meters or so more to go.

Here’s a table displaying UGC-04’s tunneling plan (best viewed on a desktop device) and the status of each tunnel –

Jan 31 2019
Nov 21 2019
1DownSiddhivinayakDadar1126mIn Progress
Jan 1 2019
Oct 11 2019
2UpSiddhivinayakDadar1106mCompleted Today!
Mar 15, 2019
March 16, 2020

With 32 breakthroughs completed, there are now just 9 more breakthroughs pending on Mumbai Metro’s Line-3:

PackageSectionDistance, Status
UGC-01Churchgate – Hutatma Chowk (up-line)650m, In Progress
UGC-01Hutatma Chowk – CST (up-line)551m, Not Started
UGC-01Churchgate – CST (down-line)1233m, In Progress
UGC-03Science Museum – Mahalaxmi (up-line)1118m, Not Started
UGC-03Mahalaxmi – Mumbai Central (up-line)837m, Not Started
UGC-03Science Museum – Mahalaxmi (down-line)1136m, In Progress
UGC-03Mahalaxmi – Mumbai Central (down-line)830m, Not Started
UGC-04Siddhivinayak – Dadar (down-line)1126m, In Progress
UGC-06Sahar Road – CSIA T1 (up-line)1516m, In Progress

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


written by

Global traveler who prefers mass rapid transit

One Response to "Mumbai Metro’s TBM S-1074 Records Breakthrough at Dadar"

  1. Prem Ranjan says:

    Congratulations to entire team..


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