DMRC sets to start 2nd leg of tunnelling on Magenta line

MD of DMRC, Mangu Singh, informed that the corporation is all set to start tunnelling work on a parallel tunnel on the Magenta line. It is a continuation of the Magenta line tunnel, which was constructed for the Botanical Garden – Janakpuri West corridor that is currently operational. The tunnel constructed is approximately 14 to 16 metres deep whereby over a thousand rings have been installed in the tunnel. It has an inner diameter of 5.8 metres. Currently, two parallel circular tunnels are being constructed for up and down movement on this stretch, which is a part of the 2.2km long underground section from Janakpuri West to Keshopur. The alignment of the tunnel runs along the Outer ring road. Executive Director of corporate communications, DMRC, Anuj Dayal informed that the tunnel has been built using earth pressure balancing method (EPBM) technology, with concrete lining made up of precast tunnel rings. As part of the works approved in phase 4 of the Delhi Metro project, about 27-km of underground lines will be constructed across the Janakpuri West-RK Ashram, Aerocity-Tughlaqabad and the Maujpur-Majlis Park corridors. The Janakpuri West – RK Ashram Marg corridor will have a 7.74-km long underground section.