Delhi-Meerut RRTS Tunnels’ Track-Bed Concreting Work Begins
With the completion of 3 of 6 tunnels on the 82.15 km Delhi – Meerut RRTS project’s Package 8, contractors for this semi high-speed rail project have moved on to the next stage to facilitate system works.
Afcons Infrastructure last week poured first-stage invert concrete inside the down-line tunnel between Begumpul Ramp and Begumpal Station. This work above the tunnels’ precast segment lining is being done to facilitate track-laying work by Larsen & Toubro as part of Package 17.
National Capital Region Transport Corporation (NCRTC) had awarded Afcons with Package 8’s Rs. 1529.10 crore contract in November 2020 with a 1310 day (3.6 year) deadline.
They’ve deployed 3 x 7.51m diameter Terratec Earth Pressure Balance (EPB) machines (S88, S89 & S90) to construct six twin tunnels from Brahampuri DN Ramp to Begumpul UP Ramp. Their scope also includes contructing 3 underground stations at Meerut Central, Bhaisali & Begumpul by cut & cover method.
While concrete works are underway on this section, teams from NCRTC, Afcons and L&T are elsewhere conducting joint tunnel surveys to capture tunnel geometry information using reference points for precise track installation.
In case you missed it – Afcons this month recommissioned tunnel boring machine Sudarshan 8.1 (TBM S88) from Bhaisali Station to Begumpul Station for Package 8’s 5th and penultimate drive.
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Meerut city will have three underground stations within the city is it,please let me know.
What about cross passages.How many are there ? Irrespective of desired ROD ,when the civil contractor is likely to complete UG stretch 100%..
I need to check, but believe there are 9 CPs