Latest news with #NewAustrianTunnellingMethod
India.com
2 hours ago
- Business
- India.com
Bullen train project gains momentum as first phase of 21 km long tunnel..., will pass through...
(File) New Delhi: There is more good news about the much-awaited Mumbai-Ahmedabad bullet train project. The ambitious mission has achieved its first important milestone as a 21-km-long tunnel between Mumbai's Bandra-Kurla Complex (BKC) and Thane's Shilphata has been constructed. Which method has been used? A 2.7-km-long continuous tunnel section has been successfully completed using the New Austrian Tunneling Method (NATM). The National High Speed Rail Corporation Limited (NSSRCL) has given this information. This achievement is a significant leap in India's first bullet train project, which aims to connect Mumbai and Ahmedabad through a high-speed rail corridor. This will significantly reduce travel time and increase transport efficiency between the two financial centers. The 21-km long tunnel will be a crucial part of the high-speed rail corridor, of which 16 km will be constructed using tunnel boring machines (TBMs) and the remaining five km using the New Austrian Tunnelling Method (NATM), including the section between Shilphata and Ghansoli. What else does the tunnel include? The tunnel also includes a seven-km undersea section under the Thane creek. To expedite the tunnelling work in the NATM section, an additional operated intermediate tunnel (ADIT) was constructed, enabling simultaneous excavation from both Ghansoli and Shilphata ends. Out of the total NATM section, about 1.62 km has been excavated from the Shilphata side and the total progress is 4.3 km. What is the cost of this project? The NHSRCL said that extensive safety measures have been implemented at the site, including installation of ground settlement markers, piezometers, inclinometers, strain gauges and biometric access control systems. These are designed to ensure safe and controlled tunnelling work without affecting nearby infrastructure or habitations. However, sources said that TBM machines have not yet been received from the companies for the construction of the 16-km-long tunnel, while the shafts and other equipment for these machines are in place. The total cost of the Mumbai-Ahmedabad High Speed Rail Corridor project has been estimated at Rs 1.08 lakh crore. As per the shareholding pattern, the central government will pay Rs 10,000 crore to NHSRCL, while Gujarat and Maharashtra have to pay Rs 5,000 crore each.
India Gazette
2 days ago
- General
- India Gazette
2.7 km long continuous tunnel completed with first breakthrough in 21 km tunnel between BKC and Shilphata
Shilphata (Maharashtra) [India] July 11 (ANI): On July 9, the first breakthrough was achieved in the 21 km long tunnel being constructed between Bandra-Kurla Complex (BKC) and Shilphata in Maharashtra, marking the successful completion of a 2.7 km continuous tunnel section. Out of the total 21 km tunnel, 5 km is being constructed using the New Austrian Tunnelling Method (NATM) between Shilphata and Ghansoli, while the remaining 16 km will be built using Tunnel Boring Machines (TBMs). The tunnel also includes a 7 km long undersea section beneath Thane Creek. To expedite tunnelling in the NATM portion, an Additionally Driven Intermediate Tunnel (ADIT) was constructed, allowing simultaneous excavation towards Ghansoli and Shilphata sides. So far, about 1.62 km has been excavated from the Shilphata side, and the total progress in the NATM section stands at approximately 4.3 km. Comprehensive safety measures have been implemented at the site, including ground settlement markers, piezometers, inclinometers, strain gauges, and biometric access control systems to ensure safe and controlled tunnelling activities without disturbing nearby structures. The work on the Mumbai-Ahmedabad high-speed bullet train project is going on in full swing in Maharashtra, with major structural and tunnelling milestones being achieved, according to the National High-Speed Rail Corporation Limited (NHSRCL) said on Saturday. According to the NHSRCL, work on all three elevated stations in the state, Thane, Virar, and Boisar, is advancing swiftly, and the first slabs for Virar and Boisar stations have recently been cast. Across the alignment, pier foundations and pier works are underway at various locations, with approximately 44 km of piers cast to date. In the Palghar district, viaduct construction has also commenced using full-span box girder launching technology, starting from the Dahanu area. Additionally, the excavation of seven mountain tunnels in the Palghar district is actively in progress, demonstrating the project's engineering scale and complexity. Bridge construction has also kicked off at three major rivers: Vaitarna, Ulhas, and Jagani, further contributing to the corridor's critical infrastructure. An important component of the project is the 21-kilometre-long underground and undersea tunnel connecting the Mumbai Bullet Train station at Bandra-Kurla Complex (BKC) to Shilphata. Of the 21 km tunnel, 16 km is being excavated using Tunnel Boring Machines (TBMs), while 5 km is being executed using the New Austrian Tunnelling Method (NATM). The tunnel includes a 7 km undersea stretch beneath Thane Creek, marking a significant feat in Indian tunnelling history. So far, approximately 4.1 km of tunnel heading has been achieved through NATM from the Shilphata site, and two concurrent faces have been developed from the ADIT portal. In terms of vertical construction, base slab casting at the Vikhroli shaft (56 meters deep) and Sawli shaft (39 meters deep) has been completed. Additionally, sludge treatment plants are being installed at shaft locations, and the Mahape tunnel lining casting yard is actively producing tunnel lining segments. For the under-construction Mumbai Bullet Train station at Bandra Kurla Complex, 80% of the excavation work has been completed. Base slab casting at 100 ft below ground level has already started at both ends of the station site, NHSRCL added. (ANI)
Time of India
2 days ago
- Business
- Time of India
Mumbai-Ahmedabad Bullet Train Tunnel Breakthrough: A Milestone in High-Speed Rail, ET Infra
Advt Advt By , ETInfra The National High Speed Rail Corporation Limited (NHSRCL) announced the first breakthrough in the 21-kilometre tunnel being constructed between Bandra-Kurla Complex (BKC) in Mumbai and Shilphata in Thane for the Mumbai-Ahmedabad bullet train breakthrough, achieved on Wednesday, marks the successful completion of a 2.7-kilometre continuous tunnel section utilising the New Austrian Tunnelling Method (NATM).The 21-kilometre tunnel is a critical component of the high-speed rail corridor . Of its total length, 16 kilometres will be constructed using Tunnel Boring Machines (TBMs), while the remaining 5 kilometres, particularly between Shilphata and Ghansoli, will employ the NATM. Notably, the tunnel also includes a 7-kilometre undersea section beneath Thane Creek, presenting a unique engineering accelerate tunneling in the NATM portion, an Additional Driven Intermediate Tunnel (ADIT) was constructed. This strategic approach enabled simultaneous excavation from both the Ghansoli and Shilphata far, approximately 1.62 kilometres have been excavated from the Shilphata side, bringing the cumulative NATM progress to 4.3 NHSRCL has implemented comprehensive safety measures at the site to ensure secure and controlled tunneling operations, safeguarding nearby infrastructure and habitats. These measures include the installation of ground settlement markers, piezometers, inclinometers, strain gauges, and biometric access control this breakthrough is a significant step, sources indicate that TBMs for the 16-kilometre section are yet to be received from manufacturers, although the necessary shafts and other equipment for launching these machines are already in total estimated cost for the Mumbai-Ahmedabad High Speed Rail Corridor project stands at ₹1.08 lakh crore. The funding structure involves the Union government contributing ₹10,000 crore to the NHSRCL, with Gujarat and Maharashtra each contributing ₹5,000 crore. The remainder of the project cost will be covered by a loan from Japan, offered at a highly favourable interest rate of 0.1 per cent.
Hindustan Times
2 days ago
- Business
- Hindustan Times
Mumbai-Ahmedabad bullet train work records first major breakthrough: 2.7 km tunnel completed
The first breakthrough in the 21-km tunnel being constructed between Bandra-Kurla Complex (BKC) in Mumbai and Shilphata in Thane for the Mumbai-Ahmedabad bullet train project has been achieved, the National High Speed Rail Corporation Limited (NHSRCL) said on Thursday. This achievement marks a significant leap forward in India's first bullet train project.(@RailMinIndia) The first breakthrough in the 21 km long tunnel was recorded on Wednesday, an NHSRCL release informed. With this, a 2.7 kilometre continuous tunnel section has been successfully completed using the New Austrian Tunnelling Method (NATM), the release added. This achievement marks a significant leap forward in India's first bullet train project, aimed at connecting Mumbai and Ahmedabad with a high-speed rail corridor, drastically reducing travel time and enhancing transport efficiency between the two financial hubs, it said. "The 21-kilometre tunnel will be a key part of the high-speed rail corridor, with 16 km being constructed using Tunnel Boring Machines (TBMs), and the remaining 5 km through the New Austrian Tunnelling Method (NATM), especially between Shilphata and Ghansoli. Significantly, the tunnel also features a 7 km undersea section beneath Thane Creek," it said. "To expedite tunnelling in the NATM portion, an Additionally Driven Intermediate Tunnel (ADIT) was constructed, which enabled simultaneous excavation from both Ghansoli and Shilphata ends. Of the total NATM section, approximately 1.62 km has been excavated from the Shilphata side, and the cumulative progress stands at 4.3 km," the release informed. Comprehensive safety measures have been implemented at the site, including installation of ground settlement markers, piezometers, inclinometers, strain gauges, and biometric access control systems, the NHSRCL said. These are designed to ensure safe and controlled tunnelling operations without impacting nearby infrastructure or habitats, it added. Sources, however, said TBMs are yet to be received from companies for the construction of the 16-km-long tunnel, though shafts and other equipment to launch these machines are in place. The total cost of the Mumbai-Ahmedabad High Speed Rail Corridor project is pegged at ₹1.08 lakh crore. As per the shareholding pattern, the Union government is to pay ₹10,000 crore to the NHSRCL, while Gujarat and Maharashtra are to pay ₹5,000 crore each. The rest is to be paid by Japan through a loan at 0.1 per cent interest.
Economic Times
2 days ago
- Business
- Economic Times
Mumbai-Ahmedabad bullet train: First breakthrough in 21 km tunnel achieved, says NHSRCL
The first breakthrough in the 21-km tunnel being constructed between Bandra-Kurla Complex (BKC) in Mumbai and Shilphata in Thane for the Mumbai-Ahmedabad bullet train project has been achieved, the National High Speed Rail Corporation Limited (NHSRCL) said on first breakthrough in the 21 km long tunnel was recorded on Wednesday, a NHSRCL release informed. With this, a 2.7 kilometre continuous tunnel section between has been successfully completed using the New Austrian Tunnelling Method (NATM), the release added. This achievement marks a significant leap forward in India's first bullet train project, aimed at connecting Mumbai and Ahmedabad with a high-speed rail corridor, drastically reducing travel time and enhancing transport efficiency between the two financial hubs, it said. "The 21-kilometre tunnel will be a key part of the high-speed rail corridor, with 16 km being constructed using Tunnel Boring Machines (TBMs), and the remaining 5 km through the New Austrian Tunnelling Method (NATM), especially between Shilphata and Ghansoli. Significantly, the tunnel also features a 7 km undersea section beneath Thane Creek," it said. "To expedite tunnelling in the NATM portion, an Additionally Driven Intermediate Tunnel (ADIT) was constructed, which enabled simultaneous excavation from both Ghansoli and Shilphata ends. Of the total NATM section, approximately 1.62 km has been excavated from the Shilphata side, and the cumulative progress stands at 4.3 km," the release safety measures have been implemented at the site, including installation of ground settlement markers, piezometers, inclinometers, strain gauges, and biometric access control systems, the NHSRCL are designed to ensure safe and controlled tunnelling operations without impacting nearby infrastructure or habitats, it however, said TBMs are yet to be received from companies for construction of the 16-km long tunnel, though shafts and other equipment to launch these machines are in place. The total cost of Mumbai-Ahmedabad High Speed Rail Corridor project is pegged at Rs 1.08 lakh crore. As per the shareholding pattern, the Union government to pay Rs 10,000 crore to the NHSRCL, while Gujarat and Maharashtra are to pay Rs 5,000 crore each. The rest is to be paid by Japan through a loan at 0.1 per cent interest.
