Delhi metro completes one of the underground tunnels between south extension and lajpat nagar
The Delhi Metro Rail Corporation (DMRC) today completed work of one of the longest tunnels of the Phase 3 corridors with a tunnel boring machine (TBM) breaking through at Lajpat Nagar after boring a 1565 m long tunnel from South Extension.
The tunnel on the under construction Majlis Park – Shiv Vihar corridor is the second longest tunnel of the third phase of expansion. The longest tunnelling drive of this phase would be from Nizamuddin to Ashram on the same corridor with a length of 1691 mtrs.
The tunnel from South Extension to Lajpat Nagar is one of the twin tunnels being constructed for the up and down movement of trains. It has a diameter of 5.8 mtrs for the movement of standard gauge trains.
During the course of construction of the tunnel, the Tunnel Boring Machine crossed through the thickly populated areas of Kotla and Defence Colony, which required very thorough instrumentation and monitoring. The maximum depth of the tunnel in this drive was approx. 21m in the Defence Colony Area.
The Lajpat Nagar Metro station is being developed into a major interchange hub where commuters will be able to change trains between the Faridabad – Kashmere Gate corridor (currently operational between Badarpur and ITO) and the Majlis Park – Shiv Vihar corridor of Phase 3. A 90 mtr long foot over bridge will connect the existing elevated station with the new underground facility. More than 54,000 commuters are expected to use the station next year.
The Majlis Park – Shiv Vihar Metro section is a 58.596 km long corridor which will cover most of the localities along the arterial Ring Road of the national capital. This entirely standard gauge section is expected to be operational by the end of 2016. 19.117 kms of underground lines with 12 underground stations are being constructed in this corridor.