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Home > Bids returned for NHSRCL 21km tunnel

Bids returned for NHSRCL 21km tunnel

Tris Thomas

Written by Tris Thomas on 14/02/2023 in News

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India’s National High-Speed Rail Corporation Limited’s (NHSRCL) call for bids for the construction of a 21km tunnel on the Mumbai-Ahmedabad High-Speed Rail Corridor, has been answered by two companies reportsthe Indian Express – Afcons Infrastructure Limited and Larsen & Toubro Limited.

The tunnelling works for 21km long tunnel include a 7km long undersea tunnel using TBM and NATM on the Mumbai-Ahmedabad High Speed Rail corridor (Package No. MAHSR-C-2). The tunnel will run between a station at Bandra-Kurla Complex and Shilphata in the State of Maharashtra. The 7km undersea tunnel at Thane Creek will be the first undersea tunnel in the country.

The single tube tunnel will accommodate twin track for both-up and down track.  To construct the tunnel, TBMs with a cutterhead diameter of 13.1m will be used. Three TBMs will be used to bore some 16km of the tunnel with the remaining 5km constructed using NATM.

This tunnel will be about 25 – 65m deep with the deepest construction point approx. 114m below the Parsik hill near Shilphata.

Map 01 1

Map 01 1

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