Delhi Metro completes 2.65 km underground tunnel in phase 4 of expansionThe Delhi Metro Rail Corporation (DMRC) completed the tunnelling for its longest underground tunnel (2.65 km) on the Tughlakabad-Aerocity corridor (Phase 4). The Tunnel Boring Machine (TBM) AMRIT, a 105-meter-long machine, finished the section between Tughlakabad Airforce Launching shaft and Maa Anandmayee Marg. This tunnel, one of two parallel structures...
more... for bi-directional operations, utilized the Earth Pressure Balancing Method (EPBM) with precast concrete linings made in Mundka. Construction involved navigating hard rock and relocating sewer lines, with rigorous safety measures including continuous ground movement monitoring. The second tunnel is expected to be completed by January 2025. The 2.65km tunnel, at an average depth of 16 meters, consists of 1894 rings (5.8 meters internal diameter). The Aerocity-Tughlakabad corridor is 19.343 km of the total 40.109 km of underground lines in Phase 4.
Delhi Metro Rail Corporation (DMRC) ne apne sabse lamba underground tunnel (2.65 kilometer) ka tunnelling kaam khatam kar diya hai, jo ki Tughlakabad-Aerocity corridor (Phase 4) par hai. 105-meter lamba Tunnel Boring Machine (TBM) AMRIT ne Tughlakabad Airforce Launching shaft aur Maa Anandmayee Marg ke beech ka section complete kiya...
more... hai. Yeh tunnel, bi-directional operations ke liye do parallel structures mein se ek hai, aur ismein Earth Pressure Balancing Method (EPBM) ka use kiya gaya hai, jismein Mundka mein banaye gaye precast concrete linings lage hain. Construction mein hard rock se navigate karna aur sewer lines ko relocate karna jaise challenges aaye, lekin strict safety measures, jaise continuous ground movement monitoring, rakha gaya. Dusra tunnel January 2025 tak complete hone ki ummeed hai. 2.65 kilometer lamba tunnel, 16 meter ki average depth par bana hai, aur ismein 1894 rings hain (5.8 meter internal diameter). Aerocity-Tughlakabad corridor, Phase 4 ke total 40.109 kilometer underground lines mein se 19.343 kilometer hai.