NEW DELHI: Afcons Infrastructure has emerged because the lowest bidder for development of a 21-km-long tunnel, together with India’s first 7-km-long undersea tunnel, in Maharashtra for the Mumbai-Ahmedabad bullet educate challenge. The tunnel can be built in 5 years, indicating that operation of the primary bullet educate at the stretch is probably not imaginable earlier than mid-2028.
“The financial bids of two technically qualified bidders were opened and Afcons Infrastructure Limited has quoted the lowest bid,” the National High Speed Rail Corporation (NHSRCL) stated in a remark. Afcons has quoted Rs 6,397.3 crore for the challenge.
The tunnel can be constructed between the underground station at Bandra-Kurla Complex and Shilphata in Maharashtra and the undersea tunnel will go thru Thane Creek. It can be a unmarried tube tunnel to deal with dual tracks for each up and down trains. As according to the challenge, 39 apparatus rooms at 37 places may also be built adjacent the tunnel location.
Officials stated to build this, tunnel uninteresting machines (TBMs) with a cutter head of 13.1 meter diameter can be used. In the case of metro rail and mass transit methods, in most cases 5-6 meter diameter cutter heads are used for construction tunnels in city spaces. While 3 TBMs can be used for setting up 16km of the tunnel portion, the rest 5km can be finished thru New Austrian Tunneling Method (NATM).
The tunnel can be about 25-65 meters deep from the bottom degree and the inner most development level can be 114 meters underneath Parsik Hill close to Shilphata.
railway minister Ashwini Vaishnav had knowledgeable Parliament that they’d accomplished about 32.9% of development in Gujarat and 13.7% in Maharashtra on this formidable challenge. He stated, “Till now, out of total 352km elevated viaduct, approximately 257km of piling, 180km of foundation, 155km of pier and 37km of girder launching have been completed in Gujarat and Dadra and Nagar Haveli.”
The railway ministry expects the primary trial run of the bullet educate on a 50-km portion in Gujarat in 2026.
“The financial bids of two technically qualified bidders were opened and Afcons Infrastructure Limited has quoted the lowest bid,” the National High Speed Rail Corporation (NHSRCL) stated in a remark. Afcons has quoted Rs 6,397.3 crore for the challenge.
The tunnel can be constructed between the underground station at Bandra-Kurla Complex and Shilphata in Maharashtra and the undersea tunnel will go thru Thane Creek. It can be a unmarried tube tunnel to deal with dual tracks for each up and down trains. As according to the challenge, 39 apparatus rooms at 37 places may also be built adjacent the tunnel location.
Officials stated to build this, tunnel uninteresting machines (TBMs) with a cutter head of 13.1 meter diameter can be used. In the case of metro rail and mass transit methods, in most cases 5-6 meter diameter cutter heads are used for construction tunnels in city spaces. While 3 TBMs can be used for setting up 16km of the tunnel portion, the rest 5km can be finished thru New Austrian Tunneling Method (NATM).
The tunnel can be about 25-65 meters deep from the bottom degree and the inner most development level can be 114 meters underneath Parsik Hill close to Shilphata.
railway minister Ashwini Vaishnav had knowledgeable Parliament that they’d accomplished about 32.9% of development in Gujarat and 13.7% in Maharashtra on this formidable challenge. He stated, “Till now, out of total 352km elevated viaduct, approximately 257km of piling, 180km of foundation, 155km of pier and 37km of girder launching have been completed in Gujarat and Dadra and Nagar Haveli.”
The railway ministry expects the primary trial run of the bullet educate on a 50-km portion in Gujarat in 2026.