Mumbai: The MMRC (Mumbai Metro Rail Corporation) has received its first Tunnel Boring Machine (TBM) for the construction of the 33.5km long Colaba-Bandra-Seepz Metro-3 corridor.
MMRC, Managing Director, Ashwini Bhide said,”With the arrival of our first TBM we have kicked off our tunnelling activity, which is another most critical part of this project.”
MMRC has procured the TBM, weighing around 800 tonnes, from the German firm Herrenknecht AG from its manufacturing facility in Guangzhou, China.
She said,”In the next two years, 17 TBMs will be deployed for constructing the 33.5 km twin tunnels.”
This TBM is one of the three TBMs that would be used to construct 6.10 km long tunnels between Dharavi and Siddhivinayak stations with Shitla Devi and Dadar stations during October this year.
Bhide added,”The precast segments essential for forming a concrete ring inside the tunnel are already being manufactured at six different casting yards. About 40,000 segment rings are required for the entire project which will be cast in 65 moulds imported from France and Korea.”