Delhi Metro Phase 4: DMRC Completes First 3 km Twin Tunnel Breakthrough | Details Inside

Delhi Metro: The Delhi Metro Rail Corporation (DMRC) has announced an update on the Phase 4 expansion of the Delhi Metro. DMRC has successfully completed the first twin tunnel breakthrough, marking a major milestone in this project. Metro twin tunnels, which are the longest constructed under this phase, extend approximately 3 kilometers.

The breakthrough occurred at Pulbangash Metro Station on Wednesday, with the twin tunnel boring machines (TBMs) Bhoomi and Srishti emerging simultaneously. These tunnels connect Derawal Nagar to Pulbangash on the Janakpuri West-R K Ashram corridor, an extension of the Magenta Line.

Metro twin tunnels Routes: 

The newly completed tunnels will enhance connectivity along the Janakpuri West-R K Ashram corridor, improving access for commuters in the region and further integrating the expanding Metro network.

In just over 14 months, the TBMs covered a length of approximately 2,997 meters at an average rate of 8.2 metres per tunnel per day, marking the longest tunnelling drive in DMRC Phase IV works. The event was attended by Dharmendra, Chief Secretary of Delhi, and Dr. Vikas Kumar, Managing Director of DMRC.

Anuj Dayal, Principal Executive Director of Corporate Communications at DMRC, highlighted the significance of this achievement, emphasizing the organisation’s commitment to providing safe and efficient transportation infrastructure for Delhi’s residents.

"Afcons is executing the DC-05 package that includes six underground stations, tunnelling of 14.4km including crossover, 10 cross passages, and 170m open and underground ramp. Today 3 km of twin tunnelling has been completed from Derawal Nagar to Pulbangash," the company said in a statement.

The tunnels, with an internal diameter of 5.8 metres, are equipped with six cross passages for passenger safety. The civil work for this section was carried out by contractor M/s Afcons. TBM Bhoomi began operations on June 18, 2023, followed by TBM Srishti on August 19, 2023.