Parts of TBM S1073, a more than 100m long Herrenknecht earth pressure balance (EPB) tunnel boring machine, made a touch-down at Mumbai Port on September 4 after getting shipped from Herrenknecht’s plant in Guangzhou, China.
The 700 tonne TBM successfully passed factory acceptance testing (FAT) in June 2017 and will be deployed by CEC-ITD Cem-TPL JV along with two others (S-1074, 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.
Over the next 45 days, the TBM’s parts will be transported overnight, lowered one by one into the Naya Nagar Shaft in Mahim (25m deep) and re-assembled for the start of tunneling works scheduled in the end of October.
More information and images of this TBM, shot during FAT in China, can be viewed here.
As of today 9 out of 17 TBMs have completed FAT – see a running list at the bottom of this post.
For more updates, check out the Mumbai section of The Metro Rail Guy!