In a major boost to the bullet preparation project, the National High Speed Rail Limited (NHSRCL) has invited bids for the development of a 21 km tunnel that may join from Mumbai to Ahmedabad. This tunnel features a length of seven kilometers under the sea around the Thane Creek between Shilvata in Kalyan and Bandra Kurla Complex (BKC).
The deadline for submission of bids is January 19, 2023. Machine (TBM) and New Austrian Tunneling Technology (NATM). It will be a single-tube tunnel to accommodate two double tracks for each train going up and down. As part of the tender deal, 39 gear rooms could be built in 37 tunnel-side locations.
“The 21 km long tunnel may be circular with a depth of 25-65 m and the deepest may be 114 m under Parsik Hill near Shilvata. Special TBM machines with a cutter head width of 13.1 m can be used for this Project After preparing for 16 km run with three TBMs, NATM can be used for the remaining 5 km NHSRCL official stated that since the edge between Ghansoli and Shilphata tilts it requires NATM.
The tunnel begins at Shilphata , passing through Ghansoli and throughout Thane Creek and then entering Vikhroli before completion at BKC.
This project was expected to be completed by 2023 but due to land tenure obstacles and the Covid-19 pandemic, it has
Your complete route between Ahmedabad and Mumbai can have 12 stations – eight in Gujarat and 4 in Maharashtra.The stations in Gujarat are Vapi, Bilimora, Surat, Bharuch, Vadodara and Anand, Ahmedabad and Sabarmati while in Maharashtra these are BKC, Thane, Virar and Boisar.
In 2019, NHSRCL invited tenders for the first time and for Be no bidder has appealed. Bids were again floated in November 2021 for the underground tunneling works, but were canceled for administrative reasons.
In July of this year, bids for the design and development of the BKC underground station were launched. The final bidding date is October 20th.
The project was approved in December 2015 at an estimated price of ₹ 10.8 crore.