Shanghai Tunnel Engineering Co. Ltd. (STEC) on Thursday commissioned Sudarshan 4.1 – the 1st of seven 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 early January from Shanghai, China. Workers then began lowering parts of the machine on January 18 at the southern TBM Launch Shaft.
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.
TBM Sudarshan 4.1 (and later Sudarshan 4.2) will build a 2807m tunnel from the Anand Vihar Launch Shaft at chainage 12125.29 to Khichripur TBM Retrieval Shaft located at chainage 9317.405.
Khichripur Shaft is located at the northern-end of the line’s Ashok Nagar DN Ramp connecting to Afcons Infra’s Package 6.
In the coming months, another 2 TBMs (Sudarshan 4.3 & 4.4) will be launched from Anand Vihar towards Sahibabad Ramp UP to connect with KEC – CCECC JV’s Package 1.
In Meerut, Afcons will be deploying 3 TBMs for constructing Package 8’s tunnels between Brahampuri DN Ramp and Begumpul UP Ramp – see details & snaps from factory tests.