DMRC starts tunnelling work on Phase-IV metro corridor

The Delhi Metro Rail Corporation (DMRC) has started tunnelling work under the Phase 4 project at Vikaspuri on the Delhi Metro's Janakpuri West-RK Ashram Marg corridor. Between Vikaspuri and Krishna Park Extension, two tunnels of 1.4 km will be bored as part of this tunnelling exercise. The tunnelling work is being started with the lowering and assembling of the giant 73-metre long machine at the job site. These tunnels will be located between Janakpuri West and Krishna Park Extension metro stations. The tunnelling work is being started from Vikaspuri in continuation of the Magenta line tunnel that has already been built for the Botanical Garden-Janakpuri West corridor. According to DMRC, the tunnel's alignment will be along the Outer Ring Road and nearly 27 km of underground tracks will be constructed. The tunnel will be built at a depth of around 14 to 16 metres and involves the installation of about 2,040 concrete rings. The inner diameter of each tunnel will be 5.8 metres. The entire tunnelling task is expected to be completed in approximately 15 months.