DMRC achieves the first stretch of tunnel of its phase-4 project

06 Jan 2022 CW Team

On Friday, the Delhi Metro Rail Corporation (DMRC) acquired an important milestone as the first stretch of tunnel of its phase-4 project got finished.

Anuj Dayal, Executive Director (corporate communications), DMRC, told the media that the tunnelling stretch was completed at Krishna Park Extension on the Janakpuri West – RK Ashram Marg corridor, which is an extension of the Magenta Line (Botanical Garden-Janakpuri West).

Dayal said that a Tunnel Boring Machine (TBM) broke through the 1.4 km stretch on Friday in the presence of DMRC’s managing director Mangu Singh. The main tunnelling work on this stretch started in April after achieving the initial dr4e. Despite many restrictions imposed by the Covid-19 pandemic, work was continued, and this significant milestone could be attained, he said, adding that a 73 m long TBM was utilised for the purpose.

He said that two parallel tunnels for up and down movement were being made on this stretch, which is a part of the 2.2 km long underground section between Janakpuri West and Keshopur. He said that tunnelling work on the other parallel tunnel would start shortly. The new tunnel is a continuation of the earlier Magenta line tunnel and has been constructed at a depth of about 14 to 16 m.

More than a thousand rings have been set up in the tunnel. It has an inner diameter of 5.8 m. The tunnel alignment moves along the Outer Ring Road and below the multi-storeyed constructed structures. The tunnel has been constructed with the Earth pressure balancing method, with concrete lining made up of precast tunnel rings. These concrete segments were fixed with a steam curing system to attain early strength.

All required safety precautions were taken while developing the tunnel, he said. As part of the phase-4 work nodded so far, approximately 27 km of underground lines will be built comprising the 7.7 km underground stretch, which is a part of the Janakpuri West –RK Ashram Marg corridor.

Image Source

Also read: Delhi metro phase 4 gets six bidders for RSS AMS electrification

On Friday, the Delhi Metro Rail Corporation (DMRC) acquired an important milestone as the first stretch of tunnel of its phase-4 project got finished. Anuj Dayal, Executive Director (corporate communications), DMRC, told the media that the tunnelling stretch was completed at Krishna Park Extension on the Janakpuri West – RK Ashram Marg corridor, which is an extension of the Magenta Line (Botanical Garden-Janakpuri West). Dayal said that a Tunnel Boring Machine (TBM) broke through the 1.4 km stretch on Friday in the presence of DMRC’s managing director Mangu Singh. The main tunnelling work on this stretch started in April after achieving the initial dr4e. Despite many restrictions imposed by the Covid-19 pandemic, work was continued, and this significant milestone could be attained, he said, adding that a 73 m long TBM was utilised for the purpose. He said that two parallel tunnels for up and down movement were being made on this stretch, which is a part of the 2.2 km long underground section between Janakpuri West and Keshopur. He said that tunnelling work on the other parallel tunnel would start shortly. The new tunnel is a continuation of the earlier Magenta line tunnel and has been constructed at a depth of about 14 to 16 m. More than a thousand rings have been set up in the tunnel. It has an inner diameter of 5.8 m. The tunnel alignment moves along the Outer Ring Road and below the multi-storeyed constructed structures. The tunnel has been constructed with the Earth pressure balancing method, with concrete lining made up of precast tunnel rings. These concrete segments were fixed with a steam curing system to attain early strength. All required safety precautions were taken while developing the tunnel, he said. As part of the phase-4 work nodded so far, approximately 27 km of underground lines will be built comprising the 7.7 km underground stretch, which is a part of the Janakpuri West –RK Ashram Marg corridor. Image Source Also read: Delhi metro phase 4 gets six bidders for RSS AMS electrification

Infrastructure Energy

23 Oct 2025

GAIL to Set Up Bengaluru CBG Plant Under New Concession Pact

GAIL (India) Limited has signed a 20-year concession agreement with the Bengaluru City Municipal Corporation (BBMP) to set up a compressed biogas (CBG) plant in the city. The project, expected to produce around 10 tonnes of CBG daily, will utilise municipal solid waste as feedstock, contributing to clean energy generation and efficient waste management. The CBG produced will be used in GAIL’s City Gas Distribution network to promote cleaner fuel usage. The initiative aligns with the government’s Sustainable Alternative Towards Affordable Transportation (SATAT) scheme and GAIL’s broader ..

Infrastructure Energy

23 Oct 2025

Uttarakhand HC Lifts 31-Year Ban on ONGC’s Contractual Hiring

The Uttarakhand High Court has lifted a 31-year-old ban on the Oil and Natural Gas Corporation (ONGC) from hiring contractual workers, a restriction imposed in 1993. The decision enables ONGC’s Dehradun establishment to employ personnel on a contractual basis to meet operational requirements. The long-standing prohibition had limited ONGC’s ability to fill vacancies in its technical and administrative departments, often leading to project delays and higher dependence on outsourcing. With the court’s directive, the public sector enterprise can now proceed with temporary recruitments whil..

Infrastructure Energy

23 Oct 2025

JSW Energy’s Utkal Unit Bags 400 MW, 25-Year Power Supply Deal

JSW Energy Limited announced that its subsidiary, JSW Energy (Utkal) Limited, has secured a Letter of Award (LoA) from Karnataka’s Power Company of Karnataka Limited (PCKL) for the supply of 400 MW of electricity for 25 years. The agreement is part of a competitive bidding process for long-term procurement of power to meet the state’s growing energy demand. The 400 MW capacity will be supplied from JSW Energy’s upcoming thermal power project in Odisha. This development strengthens JSW Energy’s presence in the southern market and aligns with its strategy to enhance long-term contracte..