Delhi Metro achieves tunnelling breakthrough on Golden Line corridor
The Delhi Metro Rail Corporation (DMRC) has achieved a major construction milestone with a successful tunnelling breakthrough at Tughlakabad Railway Colony station on the upcoming Golden Line, part of Phase 4 of the metro expansion.According to a DMRC statement, the tunnel connects Maa Anandmayee Marg to Tughlakabad Railway Colony on the Tughlakabad-Aerocity corridor. The breakthrough was achieved by a Tunnel Boring Machine (TBM) after completing a 792-metre stretch in the presence of Delhi Health and Transport Minister Pankaj Kumar Singh, DMRC Managing Director Dr Vikas Kumar and other senior officials, it said.
advertisementThe corporation said TBMs are designed to bore through various soil and rock layers, while minimising disruption to the surface. They are especially effective in urban settings and have been used extensively in previous metro phases.
DMRC said the tunnel, located at an average depth of 18 metres, is one of two parallel tunnels being built for up and down movement on the corridor. The breakthrough on the second tunnel is expected by July 2025.A total of 566 tunnel rings, each with an inner diameter of 5.8 metres, were installed using the Earth Pressure Balancing Method (EPBM), the statement said. The precast concrete segments used in the tunnel lining were manufactured at a mechanised casting yard in Mundka and steam-cured for early strength.DMRC said the ground movement was carefully monitored during the tunnelling to avoid any surface settlement under existing structures.advertisementUnder Phase 4, 40.1 km of underground metro lines are being constructed, with the Tughlakabad-Aerocity corridor accounting for 19.3 km of that stretch, it added.The latest development marks another step forward in the ongoing expansion of the Delhi Metro network, aiming to enhance connectivity and ease urban transportation challenges in the national capital, it said.Must Watch
IN THIS STORY#Delhi Metro#Delhi
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India Today
6 hours ago
- India Today
Delhi Metro achieves tunnelling breakthrough on Golden Line corridor
The Delhi Metro Rail Corporation (DMRC) has achieved a major construction milestone with a successful tunnelling breakthrough at Tughlakabad Railway Colony station on the upcoming Golden Line, part of Phase 4 of the metro to a DMRC statement, the tunnel connects Maa Anandmayee Marg to Tughlakabad Railway Colony on the Tughlakabad-Aerocity corridor. The breakthrough was achieved by a Tunnel Boring Machine (TBM) after completing a 792-metre stretch in the presence of Delhi Health and Transport Minister Pankaj Kumar Singh, DMRC Managing Director Dr Vikas Kumar and other senior officials, it said. advertisementThe corporation said TBMs are designed to bore through various soil and rock layers, while minimising disruption to the surface. They are especially effective in urban settings and have been used extensively in previous metro phases. DMRC said the tunnel, located at an average depth of 18 metres, is one of two parallel tunnels being built for up and down movement on the corridor. The breakthrough on the second tunnel is expected by July 2025.A total of 566 tunnel rings, each with an inner diameter of 5.8 metres, were installed using the Earth Pressure Balancing Method (EPBM), the statement said. The precast concrete segments used in the tunnel lining were manufactured at a mechanised casting yard in Mundka and steam-cured for early said the ground movement was carefully monitored during the tunnelling to avoid any surface settlement under existing Phase 4, 40.1 km of underground metro lines are being constructed, with the Tughlakabad-Aerocity corridor accounting for 19.3 km of that stretch, it latest development marks another step forward in the ongoing expansion of the Delhi Metro network, aiming to enhance connectivity and ease urban transportation challenges in the national capital, it Watch IN THIS STORY#Delhi Metro#Delhi
Time of India
7 hours ago
- Time of India
Delhi Metro achieves tunnel breakthrough on Aerocity corridor
New Delhi: The underground tunnel between Maa Anandmayee Marg and Tughlaqabad railway colony station has been completed on the Tughlaqabad-Aerocity corridor of phase IV, also known as Golden Line. A tunnel boring machine (TBM) broke through on Saturday morning at Tughlaqabad railway colony station after boring a 0.79km-long tunnel. This tunnel breakthrough was achieved using a mammoth 96-metre-long TBM. Two parallel circular tunnels for up and down movement are being constructed on this stretch. The breakthrough on the other parallel tunnel is expected to be achieved in July 2025. The tunnel breakthrough occurred in the presence of transport minister Pankaj Kumar Singh and DMRC managing director Vikas Kumar. Singh said, "Going forward, we will further accelerate metro expansion and ensure that Delhi's citizens receive the quality infrastructure and services they truly deserve." This new tunnel was constructed at an average depth of around 18 metres. About 566 rings were installed in the tunnel, with an inner diameter of 5.8 metres. The tunnel was built using the proven technology of the earth pressure balancing method with a concrete lining made of precast tunnel rings. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like No dark spots, 10 years younger! Just take this from Guardian URUHIME MOMOKO Learn More Undo These tunnel rings were cast at a fully mechanised casting yard set up at Mundka. The concrete segments were cured with a steam curing system to achieve early strength. "All necessary safety precautions were taken during the construction of the tunnel below the existing built-up structures. Ground movements were monitored with highly sensitive instruments fixed on nearby structures, ensuring that there was no settlement anywhere," said Anuj Dayal, principal executive director of corporate communications at Delhi Metro Rail Corporation. As part of the phase-IV work approved so far, 40.11km underground lines are being constructed. The Aerocity-Tughlaqabad corridor has underground sections totalling 19.34km. A TBM is a machine used to excavate tunnels with a circular cross-section through various soil and rock strata. They can be designed to bore through anything from hard rock to sand. TBMs have revolutionised tunnelling work worldwide, enabling tunnels to be bored without disturbing buildings and other surface structures. TBMs are particularly useful for underground tunnelling work in congested urban areas. DMRC has been using TBMs for its tunnelling work since phase I. In phase III, when approximately 50km underground sections were built, about 30 TBMs were deployed in the national capital.
Hindustan Times
7 hours ago
- Hindustan Times
Delhi Metro's Golden Line corridor reaches key tunneling milestone
The Delhi Metro Rail Corporation (DMRC) on Friday completed a significant tunnelling milestone on the Aerocity–Tughlakabad corridor—also known as the Golden Line—after a Tunnel Boring Machine (TBM) broke through at Tughlakabad Railway Colony station. The breakthrough marked the completion of a 792-metre-long underground tunnel stretch excavated from Maa Anandmayee Marg, officials said. The tunnel, built at an average depth of 18 metres, is part of the 19.3-kilometre underground alignment of the corridor, which spans 23.6 kilometres in total. Once complete, it is expected to bolster east-west connectivity in South Delhi and provide a seamless interchange with the Violet Line at Tughlakabad. The event was attended by Delhi's health and transport minister Dr Pankaj Kumar Singh, DMRC managing director Dr Vikas Kumar, and other senior officials. A parallel tunnel for the up and down movement is expected to be completed by July 2026. 'This breakthrough is not just a technical achievement but a symbol of renewed momentum,' said Singh. 'What was once stalled is now moving at full speed. Today's event serves both as an inspection and a celebration. Going forward, we will further accelerate metro expansion and ensure that Delhi's citizens receive the quality infrastructure and services they truly deserve,' minister Singh added. The Aerocity–Tughlakabad stretch forms one of three corridors under construction as part of DMRC's Phase-4 expansion. The other two include the Janakpuri West–RK Ashram extension of the Magenta Line and the Majlis Park–Maujpur extension of the Pink Line, officials said. While the Pink Line extension is expected to be completed by the end of 2025, the Golden Line and Magenta Line corridors are scheduled for completion by mid-2026. Anuj Dayal, principal executive director of corporate communications at DMRC, said that ground movement during excavation was carefully monitored using precision instruments fixed to nearby buildings to avoid any structural disturbances or surface settlement.
