Engineers and Delhi metro construction workers during the tunnel break through for DMRC’s Golden metro line, at Vasant Kunj metro station, in New Delhi on Thursday.
| Photo Credit: ANI

Tunnelling work for Phase 4 of the Delhi Metro Corporation’s (DMRC) Golden line, between Kishangarh and Vasant Kunj stations, was completed on Thursday, a DMRC official said. The newly-tunnelled areas are a part of the Tughlakabad-Aerocity corridor.

According to the DMRC, the tunnel boring machine (TBM) successfully broke through at the Vasant Kunj station site in the presence of Union Minister of Housing and Urban Affairs and Power, Manohar Lal Khattar, and Tokhan Sahu, Minister of State for Housing and Urban Affairs.

A 91 m TBM completed the excavation of a 1,550 m tunnel at Vasant Kunj station. Two parallel circular tunnels are being built for up and down movement on this stretch. The second tunnel is expected to be completed by June, a senior DMRC official said.

The newly-built tunnel located at an average depth of 23 m consists of 1,107 tunnel rings, each with an inner diameter of 5.8 m, he added. 

As part of the approved Phase 4 expansion, the DMRC is constructing 40.109 km of underground metro lines. The Tughlakabad-Aerocity corridor alone includes 19.343 km of underground sections, the official added.