India is set to get its first undersea tunnel as part of the bullet train corridor being developed between Mumbai and Ahmedabad. The corridor which covers a distance of 508 kms will have a 21 km underground link from BKC to Kalyan Shilphata in Maharashtra out of which 7 km will be under the Thane creek, 1.8 km under the sea bed and the remaining under the mangroves marshland on either side of the creek.
The National High-Speed Rail Corporation Limited (NHSRCL) invited bids for the construction of the corridor while issuing a tender on Tuesday (23 April). The tender for construction of tunnelling works includes testing and commissioning for double line high-speed railway.
It requires the use of a tunnel boring machine (TBM) and the new Austrian tunnelling method (NATM) for constructing the tunnels. The tender requires the project to be completed within 1,280 days or 3.5 years. Read More
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