Namma Metro tunnel boring machine Tunga sets new record in Bengaluru
8 months ago

Namma Metro tunnel boring machine Tunga sets new record in Bengaluru

The Hindu  

Namma Metro’s Tunnel Boring Machine Tunga has set a new record. In July, Tunga tunnelled through 308 metres, surpassing the previous record of 273 metres set by TBM Urja in May 2022, according to Bangalore Metro Rail Corporation Limited. This surpasses the previous record of 273 metres set by TBM Urja between Cantonment and Pottery Town in May 2022.” BMRCL has deployed nine TBMs for the construction of Namma Metro lines across Bengaluru. Having commenced its final drive on February 3, Tunga has already tunnelled 469 metres of the total 938-metre target.

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History of this topic

Work on 7.8 km metro tunnel starts with launch of boring at Chennai's Kolathur
1 month, 1 week ago

Work on 7.8 km metro tunnel starts with launch of boring at Chennai's Kolathur

New Indian Express  

CHENNAI: The work on the 7.8km underground tunnel under corridor 5 began on Wednesday with the launch of the tunnel boring machine ‘Kurinji’ which will bore a 246m tunnel from Kolathur Ramp towards Kolathur Station and is expected to finish by June. The second TBM, Mullai, is expected to arrive by the end of March and will begin tunnelling adjacent …

A walk through Namma Metro’s Pink Line tunnel
1 month, 2 weeks ago

A walk through Namma Metro’s Pink Line tunnel

The Hindu  

The 21-km-long Pink Line of Namma Metro, stretching from Nagawara to Gottigere, is nearing completion, according to Subrahmanya Gudge, Chief Engineer of Bangalore Metro Rail Corporation Ltd.. Amid the metro fare hike fiasco, BMRCL took reporters to see the work of a metro tunnel below Kamaraj Road on Monday, where the tracks have been laid and civil work is going …

Phase 4: DMRC completes work on 2.65-km-long underground tunnel
3 months, 4 weeks ago

Phase 4: DMRC completes work on 2.65-km-long underground tunnel

New Indian Express  

NEW DELHI: The Delhi Metro Rail Corporation has completed the longest underground tunnel on the Tughlakabad-Aerocity corridor of Phase-IV, marking a significant milestone in its ongoing expansion. The tunnel stretches between the Tughlakabad Airforce Launching Shaft and Maa Anandmayee Marg, the DMRC said in a statement on Wednesday. A 105-metre-long tunnel boring machine broke through at Maa Anandmayee Marg station …

China's Largest Tunnel Boring Machine Rolls Off Production Line in Changsha
5 months ago

China's Largest Tunnel Boring Machine Rolls Off Production Line in Changsha

China Daily  

China's largest tunnel boring machine is rolled off the production line in Changsha, Hunan province. The machine, with a diameter of 16.64 meters, is the largest TBM designed in the country and will be used for building a tunnel across the Yangtze River linking Nantong and Suzhou in Jiangsu province.

Nation's largest TBM rolls off assembly line
5 months ago

Nation's largest TBM rolls off assembly line

China Daily  

China's self-developed tunnel boring machine with the biggest diameter is rolled off the production line in Changsha, Central China's Hunan province, Oct 31, 2024. China's largest tunnel boring machine — with a diameter of 16.64 meters — rolled off the production line in Changsha, Hunan province on Thursday. The machine, weighing around 5,000 metric tons and 145 meters long, is …

TBM Tunga achieves breakthrough after tunnelling 936.6 metres in Bengaluru
6 months, 4 weeks ago

TBM Tunga achieves breakthrough after tunnelling 936.6 metres in Bengaluru

The Hindu  

Bangalore Metro Rail Corporation Limited’s Tunnel Boring Machine Tunga achieved a breakthrough on September 4 after tunnelling 936.6 metres between Kadugondanahalli station and Nagawara station’s South Cut and Cover Shaft. In July, TBM Tunga, which was working on the Pink Line of Namma Metro, had set a new record by tunnelling 308 metres between K.G. It surpassed the previous record …

DMRC Completes 865-metre Tunnel For Tughlakabad-Aerocity Metro Corridor
7 months, 1 week ago

DMRC Completes 865-metre Tunnel For Tughlakabad-Aerocity Metro Corridor

News 18  

Delhi Metro Rail Corporation has completed the tunnel work between Chhatarpur and Chhatarpur Mandir station on the Golden Line of Tughlakabad-Aerocity Corridor. Delhi Lieutenant Governor VK Saxena and Transport Minister Kailash Gehlot attended the ceremony held on the occasion of the completion of the tunnel work. 97-meter-long tunnel boring machine was used to build the tunnel between Chhatarpur and Chhatarpur …

Namma Metro’s Pink Line tunnelling deadline at risk due to rocky terrain challenges
9 months, 3 weeks ago

Namma Metro’s Pink Line tunnelling deadline at risk due to rocky terrain challenges

The Hindu  

The two Tunnel Boring Machines working on the underground section of the Pink Line for the Bengaluru Metro from Kalena Agrahara to Nagawara might not meet the tunnelling deadline of August 2024 because of rocky terrain. Tunga and Bhadra, two tunnel boring machines, are excavating the last section of the underground Pink Line. The Pink Line, stretching over 21.26 km …

Mumbai-Ahmedabad Bullet Train On Right Track: Ghansoli Tunnel Excavation Complete
10 months ago

Mumbai-Ahmedabad Bullet Train On Right Track: Ghansoli Tunnel Excavation Complete

News 18  

In a significant development for the Mumbai-Ahmedabad bullet train project, a 394-meter-long Additionally Driven Intermediate Tunnel at Ghansoli has been successfully excavated. The 26-meter-deep inclined ADIT will support the construction of a 3.3-km tunnel segment using the New Austrian Tunnelling Method, allowing simultaneous tunnelling approximately 1.6 meters on each side. These include Surface Settlement Points, Optical Displacement Sensors or tilt …

Bengaluru’s Namma Metro completes 12 years of transit: A journey through slow milestones and challenges
1 year, 5 months ago

Bengaluru’s Namma Metro completes 12 years of transit: A journey through slow milestones and challenges

The Hindu  

On Friday, Namma metro completes its 12th anniversary since the inauguration of its first operational stretch in 2011, Reach 1, connecting M.G. The operation of Namma Metro, which had been conceptualised nearly two decades prior to its launch, marked a pivotal step forward in Bengaluru’s transportation infrastructure. Delays and missed deadlines However, South India’s first metro rail faced numerous challenges, …

Chennai Metro’s phase II project tunnelling work picking up pace
1 year, 10 months ago

Chennai Metro’s phase II project tunnelling work picking up pace

The Hindu  

One of the first tunnel boring machines that began boring in the city from north Chennai for Chennai Metro Rail Ltd.’s phase II project is expected to reach its first destination next month. Two TBMs — Anaimalai and Servarayan – will create a tunnel from Madhavaram to Venugopal Nagar under Corridor 5 of the ₹61,843-crore phase II project. According to …

Ramlila Maidan - Agra Fort Metro station tunnel link completed
1 year, 11 months ago

Ramlila Maidan - Agra Fort Metro station tunnel link completed

Hindustan Times  

Tunnelling work linking Ramlila Maidan with Agra Fort Metro Station as part of priority corridor of Agra Metro Rail Project, has been completed. TBM Yamuna emerging at the Agra Fort Metro Station in Agra recently Uttar Pradesh Metro Rail Corporation claimed it as a major breakthrough in record time. The press statement issued by public relations office of UPMRC claimed …

Safety inspection of K.R. Puram-Whitefield metro line completed
2 years, 1 month ago

Safety inspection of K.R. Puram-Whitefield metro line completed

The Hindu  

The statutory inspection of the K.R. Puram to Whitefield metro line by the Commissioner of Metro Railway Safety Abhai Kumar Rai was completed on Friday, February 24. Mr. Rai and his team inspected the 13.71 km stretch built under phase II of Namma Metro, which is part of the extended purple line from Baiyappanahalli to Whitefield line. Tunnel Boring Machine …

72% of Pink Line tunnel works completed; four out of nine tunnel boring machines done with task, says BMRCL
2 years, 1 month ago

72% of Pink Line tunnel works completed; four out of nine tunnel boring machines done with task, says BMRCL

The Hindu  

The Bangalore Metro Rail Corporation Ltd. has completed 72% of tunnel work under phase II of Namma Metro. To build the tunnel network, the BMRCL had deployed nine tunnel boring machines. Two packages almost complete Anjum Parwez, MD of BMRCL, said: “The tunnel works of two packages awarded to L&T from Shaadi Mahal on Tannery Road to Rashtriya Military School …

Metro Rail to take up tunnelling work in Greenways Road soon
2 years, 4 months ago

Metro Rail to take up tunnelling work in Greenways Road soon

The Hindu  

Chennai Metro Rail Ltd.’s tunnelling work will now be taken up in southern parts of the city as a tunnel boring machine will be deployed at Greenways Road early next month. After phase 1 and phase 1 extension, the ₹61,843-crore phase 2 project of Chennai Metro Rail network will run to a length of 118.9 km, connecting several key areas …

Special tunnel boring machines to be deployed for Chennai Metro’s phase II project
2 years, 5 months ago

Special tunnel boring machines to be deployed for Chennai Metro’s phase II project

The Hindu  

As the city gets ready to witness massive tunnelling operations for the next few years for the 118.9-km phase II project, Chennai Metro Rail Ltd. plans to deploy two specialised machines for handling some portions of the underground work. This is because the transport utility is anticipating some challenging geological conditions and plans to use two special tunnel boring machines. …

Chennai Metro to deploy made in India tunnel boring machines for Phase II project
2 years, 8 months ago

Chennai Metro to deploy made in India tunnel boring machines for Phase II project

The Hindu  

Chennai Metro Rail Ltd. is all set to deploy made in India tunnel boring machines for its Phase II project. According to CMRL officials, of the 23 TBMs to be used in the project, 12 would be from Tamil Nadu, five from China, one from Germany and one from Pune respectively. The status of four TBMs is not known yet …

In a first for Namma Metro, Urja drills 27 meters in single day
2 years, 11 months ago

In a first for Namma Metro, Urja drills 27 meters in single day

The Hindu  

In a first for the Namma Metro project, Tunnel Boring Machine Urja drilled a distance of 27 meters on April 25. There are nine TBMs deployed to build a tunnel network for a distance of 14 km under the phase II of Namma Metro project. “Favourable geographical conditions, continuous supervision, and skilled manpower who change rings are prominent factors for …

Namma Metro: Tunnel boring machine emerges at Shivajinagar
3 years, 6 months ago

Namma Metro: Tunnel boring machine emerges at Shivajinagar

The Hindu  

The tunnel boring machine Urja emerged at Shivajinagar on Wednesday morning after covering a distance of 855 metres. Jubilant metro workers who have been part of the tunnel work for over a year cheered loudly as the head of the TBM emerged at the under-construction Shivajinagar underground station on the Pink Line from Kalenga Agrahara to Nagawara. Bangalore Metro Rail …

Namma Metro adds 6 stations to Purple Line
3 years, 7 months ago

Namma Metro adds 6 stations to Purple Line

The Hindu  

After waiting for years, commuters will finally be able to travel on Namma Metro’s extended Purple Line from Mysuru Road to Kengeri when it commences operations on August 30 morning. Chief Minister Basavaraj Bommai and Union Minister for Housing and Urban Affairs Hardeep Singh Puri inaugurated the extended line on August 29 and flagged off a train at Nayandahalli Metro …

One more Mumbai Metro tunnel digger on the way, work begins in November
7 years, 6 months ago

One more Mumbai Metro tunnel digger on the way, work begins in November

Hindustan Times  

The tunnelling work for a 4.5km section between Azad Maidan and Grant Road of the Colaba-Bandra-SEEPZ Metro-3 underground corridor will commence by early November. The tunnel boring machine for the section has been shipped from China and would be arriving in Mumbai next week, Mumbai Metro Rail Corporation officials said. The TBM for the section will arrive in this week …

BMRCL to commence speed trials on Reach 3 soon
11 years, 10 months ago

BMRCL to commence speed trials on Reach 3 soon

The Hindu  

With the work on Namma Metro stretch between Peenya and Sampige Road Station almost complete, Bangalore Metro Rail Corporation Ltd. has decided to conduct full-speed trial of trains between Peenya and Sriramapura stations from June 10. The remaining distance of about 1 km between Sriramapura and Sampige Road Station will undergo speed trials from July 8, a BMRCL press release …

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