The National Capital Regional Transport Corporation (NCRTC) has started the tunnelling work at Anand Vihar for India’s first regional rapid transit system (RRTS) corridor between Delhi, Ghaziabad and Meerut. A 90-meter long tunnel boring machine has started construction of a tunnel from Anand Vihar to the New Ashok Nagar side. The 82-km-long Delhi-Ghaziabad Meerut RRTS corridor will have 25 stations, including two depots and one stabling yard.
The TBM consists of a cutter head, front shield, middle shield, tail shield, erector, screw conveyor, and many other parts that help in boring the tunnels efficiently and the entire stretch of the corridor will be ready by 2025. Tunnel rings are being constructed with the help of tunnel segments by the TBM. The tunnel’s diameter is 6.5 metres and this particular TBM will build around 3km of the tunnel from Anand Vihar towards the New Ashok Nagar side.
Four TBMs will be launched from Anand Vihar station of which, two will be for a drive from Anand Vihar towards New Ashok Nagar side and two for a drive from Anand vihar towards the Sahibabad side. The construction of other launching shafts for the TBM launching towards the Sahibabad side is underway at the north side of Anand Vihar. The TBMs from Anand Vihar to Sahibabad will construct around 2 km of tunnels each and the retrieving shaft of the same is under construction at Vaishali near Sahibabad. Further, the underground stretches of the RRTS will have twin separate tunnels for the to and fro movement of trains. There will also be provisions of emergency escapes for commuters’ safety in case of any emergency with a cross-passage at around every 250 metres.