This past weekend, the Mumbai Metro Rail Corporation welcomed the delivery of two new tunnel boring machines (TBMs) from China for building different sections of Mumbai Metro’s 33.5 km Line-3 tunnels between Cuffe Parade and Aarey Colony. Parts of Herrenknecht’s TBM S1074 and Terratec’s T60 made a touchdown at the Mumbai Port one after the other, after having successfully completed factory acceptance tests (FAT) in August 2017.
This Ø6.61m Earth Pressure Balance (EPB) machine passed FAT on August 17 and will be deployed by CEC-ITD Cem-TPL JV along with two others (S-1073, S-1075) to construct twin tunnels on Line-3’s 6.081 km package UGC-04, between Dharavi – Worli, through TBM launch shafts located at Naya Nagar in Mahim and Siddhivinayak.
This Ø6.68m Earth Pressure Balance (EPB) machine passed FAT on August 12 and will be deployed by the J Kumar Infraprojects – China Railway Tunnel Group JV along with 2 other new dual mode rock TBMs (T61, T62) and 2 refurbished TBMs (S63, S64) to build twin tunnels on the line’s 4.94 km package UGC-05 (Dharavi Station – CSIA T1 TBM receiving shaft) and 4.45 km package UGC-06 (CSIA T1 Station – Marol Naka TBM receiving shaft).
With this development, 4 out of 17 TBMs are now in the city. TBM S1073, after getting lowered into the Nayanagar Shaft in September, is currently being assembled for package UGC-04 (Dharavi – Worli) while parts of TBM T58 are currently stationed adjacent to the CST Station’s north shaft for package UGC-02 (CST – Mumbai Central).
For more updates, check out the Mumbai section of The Metro Rail Guy!