HCC-VCCL Starts Casting Tunnel Segments for Delhi Metro’s Phase 4
Workers from HCC – VCCL JV today began pouring concrete to cast their very first tunnel ring segment for constructing a 2.03 km underground extension of the Delhi Metro’s 38.235 km Magenta Line (Line-8) from the Vikaspuri Park Shaft to the Vikaspuri Ramp near Keshopur.
A tunnel ring is typically 1.4 m wide, and consists of 5 segments + 1 ‘key’ segment. For this section, which includes a 365 meter long ramp and an approximately 220 meter long station, roughly 2100 segments are expected to be cast.
HCC-VCCL is responsible for building package DC-06 of the 61.679 km (and growing) Delhi Metro Phase 4 project which was awarded with a contract value of Rs. 489 crore in January 2020 and deadline of 36 months.
Besides building twin tunnels from the Vikaspuri Park Shaft (co-incidentally built by HCC in a JV with Samsung in Phase 3’s package CC-34 north of Janakpuri West Station) to the Vikaspuri Ramp, this section’s scope also includes one underground station at Krishna Park Extension.
This package combined with other civil packages, DC-01, DC-03R, DC-05 (see package & status details), will form a 28.92 km extension of Line-8 from Janakpuri West towards RK Ashram through 22 new stations.
Some images shared by DMRC from HCC-VCCL’s casting yard located in Mundka:
HCC-VCCL plans to deploy one tunnel boring machine (TBM) to build this section’s tunnels. From what I hear, they’ll be using a refurbished
Herrenknecht Terratec machine for the job, one of the two TBMs previously used in Lucknow.
For more updates, check out the Delhi section of The Metro Rail Guy!
Any update on the airport express metro extension to conference center??
Nothing significant. DMRC earlier this month opened technical bids for the track-work contract. It had 2 bidders.
Civil work is ongoing at the ECC. Snaps from February:
Shared this snap of the cut & cover tunnel in May:
Hi TMRG. Its going to be a Terratec machine is what I have heard. This is the EPB machine which did a great job tunneling for Tata-Gulermak JV in Lucknow
Interesting. I’ll check and make corrections.
Just got it confirmed. Thanks – have updated the post.