The National High Speed Rail Corporation invited bids Friday for the development of a 21-km underground tunnel in Maharashtra for the bullet prepare venture, an official assertion mentioned, in a sign that the marquee venture has crossed land acquisition hurdles within the state.
The tunnel is the most important and most complicated piece of civil engineering work for the 502-km Ahmedabad-Mumbai bullet prepare hall. A 7-km stretch of the tunnel will probably be underneath the ocean.
Non-availability of land in Maharashtra was a significant cause the tender was cancelled in 2021.
As reported by The Indian Express earlier this month, the work on the venture has picked up tempo after the change in authorities in Maharashtra, with tenders which had been beforehand floated and withdrawn being renewed once more. This is the third try and get this tender off the block. The first time the tender was floated was in 2019, but it surely didn’t discover any takers. The second time was in November 2021.
To be constructed over an estimated interval of 5 years, the tunnel will run between the underground station at Bandra-Kurla Complex — the Mumbai station — and Shilphata in Thane district. It will probably be constructed utilizing a boring machine and
“the New Austrian Tunnelling Method (NATM)”, in line with the tender doc.
The tender is open to Indian in addition to Japanese corporations. Indian corporations can also tie up with worldwide firms and vie for the contract, officers mentioned.
The 7-km undersea tunnel at Thane creek would be the first such tunnel to come back up within the nation. It will probably be a single-
tube tunnel that accommodates twin tracks. The part will embody the development of 39 gear rooms at 37 areas adjoining the tunnel location.
This tunnel will probably be about 25 to 65 metres deep from the bottom stage and the deepest building level will probably be 114 metres beneath the Parsik hill close to Shilphata.
The final date for bid submission is January 19 subsequent yr.
With the change in authorities, officers declare that almost 96 per cent of the land for the venture has been acquired within the state.