STEC’s 3rd TBM for Delhi – Meerut RRTS Starts Tunneling

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Shanghai Tunnel Engineering Co. Ltd. (STEC) this week commissioned Sudarshan 4.3 – their 3rd of four tunnel boring machines to construct the 82.15 km Delhi – Meerut RRTS project’s twin tunnels.

This 7.5m diameter earth pressure balance (EPB) machine arrived at Anand Vihar RRTS Station in March from Shanghai, China. Workers then began lowering parts of the machine in April at the northern TBM Launch Shaft.

Sudarshan 4.3 and later Sudarshan 4.4 will build 2.093 km tunnels between Anand Vihar Station’s northern TBM Launch Shaft (chainage 12813.41) to Sahibabad UP Ramp (chainage 14907.00).

Route of New Ashok Nagar DN Ramp – Sahibabad UP Ramp of Delhi – Meerut RRTS Line – view project info & full map

STEC was awarded a contentious contract for the project’s 5.6 km Package 4 in December 2020 to build four tunnels between New Ashok Nagar DN Ramp – Anand Vihar – Sahibabad UP Ramp.

Photo via NCRTC

Their TBMs Sudarshan 4.1 and 4.2 machines started tunneling in February and March southwards towards Khichripur TBM Retrieval Shaft located at chainage 9317.405. I’m trying to ascertain both machine’s progress right now and will update this section when I hear something.

For more updates, check out the RRTS section or my Home Page! Sign up for free instant email notifications on new posts over here. Like this post? See how you can get early-access to updates and support the site over here.

– TMRG





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