On October 30, workers from the Hindustan Construction Company – OSJC Moscow Metrostroy JV began lowering parts of T-58 – their first of two Terratec tunnel boring machines (TBM) into the Chhatrapati Shivaji Terminus (CST) Station’s northern end for constructing a part of Mumbai Metro’s new 33.5 km Line-3’s tunnels.
This Ø6.68m 817 tonne dual-mode TBM successfully passed factory acceptance testing (FAT) in July 2017 and arrived at the city’s port in mid September. The HCC-OSJC JV plans to complete assembly towards the end of November. Once done, it’ll excavate 3817m for the up-line tunnel from CST → Kalbadevi → Girgaon → Grant Road → Mumbai Central as part of the 4.049 km package UGC-02 (Chhatrapati Shivaji Terminal Station – Mumbai Central’s TBM receiving shaft).
Its sister machine (T-59) passed factory acceptance tests in mid-October and is currently on its way to Mumbai. The first TBM on the entire project (S-1073) will begin tunneling works today – stay tuned for a follow up post.
For more updates, check out the Mumbai section of The Metro Rail Guy!