Robbins TBMs Commissioned for Mumbai Metro towards Hutatma Chowk

L&T-STEC JV today commissioned TBM Surya-1, a Robbins Crossover XRE tunnel boring machine (TBM), from the Churchgate Station towards Hutatma Chowk Station for building the 649m up-line tunnel of Mumbai Metro’s 33.5 km Aqua Line (Line-3).

This development comes just a few days after they commissioned TBM Surya-2, another Robbins Crossover machine, on the same section to build the 650m down-line tunnel. This is the third and penultimate drive for both machines which are expected to arrive at Hutatma Chowk in May 2020.

Here’s a status of package UGC-01 between Cuffe Parade and CST stations where 3 breakthroughs are pending. This table is best viewed on a desktop device –

TBM	Line	From	To	Distance	Status
1	up-line	Cuffe Parade	Vidhan Bhavan	1128m	Completed
1	up-line	Vidhan Bhavan	Churchgate	498m	Completed
1	up-line	Churchgate	Hutatma Chowk	649m	In Progress
1	up-line	Hutatma Chowk	CST	551m	Pending
2	down-line	Cuffe Parade	Vidhan Bhavan	1254m	Completed
2	down-line	Vidhan Bhavan	Churchgate	481m	Completed
2	down-line	Churchgate	CST	1233m	In Progress

At some point, I’d like to start compiling a monthly tunneling update like I did for Delhi & Bangalore with pending drives to give an idea of how other packages are performing.

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

– TMRG