Delhi Metro Achieves Major Tunnelling Milestone on Golden Line

04 Mar 2025 CW Team

Engineering Feat and Challenges The tunnel, designed for parallel circular tunnels for up and down movement, was built at an average depth of 26 m, reaching a maximum depth of 36 metres at some points. Featuring 1,048 tunnel rings with an inner diameter of 5.8 metres, this segment stands as one of Delhi Metro’s deepest underground passages.

Constructed using the Earth Pressure Balancing Method (EPBM), the tunnel components were manufactured at a mechanised casting yard in Mundka and steam-cured to accelerate strength development. The tunnelling operation, which began on December 4, 2023, overcame challenging geological conditions, including steep gradients, mica, and hard rock formations. Notably, damage to the screw auger necessitated its replacement during construction, adding complexity to the project.

Phase 4 Expansion and Future Prospects As part of Phase 4, DMRC is developing 40.109 km of underground lines, with the Aerocity-Tughlakabad corridor spanning 19.343 km. This expansion will enhance connectivity, reduce congestion, and improve public transport infrastructure in Delhi NCR.

Industry and Market Outlook The Delhi Metro’s Phase 4 expansion underscores the increasing investment in urban transit projects, reflecting India’s commitment to sustainable and efficient mass transport. As more Indian cities embrace metro networks, the demand for advanced tunnelling technologies, urban rail infrastructure, and smart mobility solutions will continue to rise. With metro projects playing a crucial role in urban development, initiatives like the Golden Line are expected to boost real estate values, commercial activity, and overall urban efficiency in the coming years.

The Delhi Metro Rail Corporation (DMRC) has successfully completed an underground tunnel between Chhatarpur Mandir and IGNOU Station as part of the Golden Line corridor under its ambitious Phase 4 expansion. This 1,475-m -long tunnel, constructed using a 97-m-long Tunnel Boring Machine (TBM), marks a significant breakthrough in connecting Tughlakabad and Aerocity. Engineering Feat and Challenges The tunnel, designed for parallel circular tunnels for up and down movement, was built at an average depth of 26 m, reaching a maximum depth of 36 metres at some points. Featuring 1,048 tunnel rings with an inner diameter of 5.8 metres, this segment stands as one of Delhi Metro’s deepest underground passages. Constructed using the Earth Pressure Balancing Method (EPBM), the tunnel components were manufactured at a mechanised casting yard in Mundka and steam-cured to accelerate strength development. The tunnelling operation, which began on December 4, 2023, overcame challenging geological conditions, including steep gradients, mica, and hard rock formations. Notably, damage to the screw auger necessitated its replacement during construction, adding complexity to the project. Phase 4 Expansion and Future Prospects As part of Phase 4, DMRC is developing 40.109 km of underground lines, with the Aerocity-Tughlakabad corridor spanning 19.343 km. This expansion will enhance connectivity, reduce congestion, and improve public transport infrastructure in Delhi NCR. Industry and Market Outlook The Delhi Metro’s Phase 4 expansion underscores the increasing investment in urban transit projects, reflecting India’s commitment to sustainable and efficient mass transport. As more Indian cities embrace metro networks, the demand for advanced tunnelling technologies, urban rail infrastructure, and smart mobility solutions will continue to rise. With metro projects playing a crucial role in urban development, initiatives like the Golden Line are expected to boost real estate values, commercial activity, and overall urban efficiency in the coming years.

Real Estate

06 Feb 2026

IGBC Green Karnataka Summit 2026 Highlights State’s Green Leadership

The CII Indian Green Building Council (IGBC) hosted the first IGBC Green Karnataka Summit 2026 in Bengaluru, bringing together government leaders, urban planners, developers, architects and industry stakeholders to deliberate on “Advancing Sustainability vis-à-vis Climate Resilience in Urban Built Karnataka”.Karnataka currently has 1,539 registered green building projects accounting for a cumulative 1.13 billion sq ft of certified green building footprint, ranking third in India by number of buildings adopting IGBC Green Building Ratings. The summit reinforced a collective shift from inte..

Infrastructure Transport

06 Feb 2026

MIC Electronics Bags First PAPIS Order from RCF Kapurthala

MIC Electronics has received a Letter of Acceptance (LoA) from Rail Coach Factory (RCF), Kapurthala, for its first order in the Passenger Announcement and Passenger Information System (PAPIS) segment, marking a new addition to the company’s railway electronics portfolio.The order was awarded following successful evaluation of the company’s bid by the competent authority. MIC Electronics said the scope of work will be executed in line with the agreed rate structure, delivery schedules, inspection requirements, warranty provisions and other standard terms and conditions prescribed by RCF.Com..

Infrastructure Urban

06 Feb 2026

Prozo Opens 1.5 Lakh Sq Ft Multi-Client Fulfilment Hub

Prozo has launched its largest multi-client fulfilment hub, a 1.5 lakh sq ft enterprise-grade facility at Horizon Industrial Parks, Gurugram, Haryana, strengthening its expanding national warehousing network. The new site is Prozo’s sixth multi-client facility in Haryana and eleventh in Northern India, within a network of over 50 fulfilment centres spanning 3 million sq ft.Designed as a model warehouse for North India, the facility combines high-specification infrastructure with Prozo’s proprietary technology stack to support complex and high-volume operations for enterprise, retail and D2..