Delhi Metro Phase 4 Golden Line, Delhi Metro Phase 4 Latest News: The Delhi Metro Rail Corporation (DMRC) has achieved another milestone on its Golden Line. The DMRC's Golden Line stretches from Tughlakabad to Aerocity. Delhi Metro Phase 4 Tunneling On Saturday, the DMRC completed the 0.792-km-long tunnel between Maa Anandmayee Marg and Tughlakabad Railway colony station. Earlier this morning, the tunnel breakthrough was achieved using a mammoth 96-metre-long TBM (Tunnel Boring Machine). The DMRC is constructing two parallel circular tunnels for up and down movement on this stretch as part of the Aerocity–Tughlakabad corridor. The breakthrough on the other parallel tunnel is expected to be achieved in July 2025. DMRC Phase 4 Tunnel: Latest NewsThis new tunnel has been constructed at an average depth of approximately 18m. About 566 rings have been installed in the tunnel, with an inner diameter of 5.8m. The tunnel has been built using the proven technology of EPBM (Earth Pressure Balancing Method) with a concrete lining made of precast tunnel rings. These tunnel rings were cast at a fully mechanized casting yard set up at Mundka. The concrete segments were cured with a steam curing system to achieve early strength.Delhi Metro Phase 4 Underground TunnelAs part of the Phase 4 work approved so far, 40.109 km of underground lines are being constructed. The Aerocity-Tughlakabad corridor has underground sections totaling 19.343 km. Delhi Metro Tunneling ProcessThe Delhi Metro underground tunnels are being excavated using a TBM machine. 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 revolutionized tunneling work worldwide, enabling tunnels to be bored without disturbing buildings and other surface structures.DMRC has been using TBMs for its tunneling work since Phase 1. In Phase 3, when approximately 50 kilometres of underground sections were built, about 30 TBMs were deployed in the national capital.
Delhi Metro Phase 4 Golden Line: DMRC achieves another milestone on Tughlakabad-Aerocity corridor | LATEST UPDATE
