Work on the Patna Metro Rail project is well underway
RAILWAYS & METRO RAIL

Work on the Patna Metro Rail project is well underway

The Patna Metro Rail project's construction is currently in full swing. Once the first of four Tunnel Boring Machines (TBMs) named Mahavir was lowered at the Moin-Ul-Haq metro station with a 1,494 m drive length in the direction of Patna University station, it made a significant advancement. With this, the Patna Metro's tunnelling project officially starts. The TBM device will be used to complete the underground tunnelling project.

The TBM Mahavir weighs approximately 420 MT, which is equal to the weight of 60 elephants. Together with the backup gantries, it consists of a cutter head, front shield, middle shield, and tail shield. The TBM's main body is around 9 metres long, and its entire EPB is about 95 metres long. The excavation diameter is 6,650 mm, with the precast ring lining with an outer diameter of 6,350 mm and inner diameter of 5,800 mm. The Chinese Railway Construction Heavy Industrial Corporation Ltd. (CRCHI) designed and produced these TBM machines.

The TBM Mahavir bearing with serial number DZ1090 was first put together on the ground before being lowered into the cradle with the aid of Mega Lifts. Strand jacks with a combined lifting capability of 325 MT were used to raise it. The TBM at the metro station has been lowered using a total of four strand jacks. The cradle will be raised by the Mega lift and then pushed up to the TBM lowering point (Launching Shaft). After skidding, the TBM will be lowered into the shaft, which is approximately 16 m below ground level.

On February 17, 2019, Prime Minister Narendra Modi laid the foundation stone for the projected Rs 133.65 billion Patna Metro rail project. It will have two corridors Danapur to Mithapur; and Patna Railway Station to New ISBT. After the Patna Metro project is finished, public transportation will be made easier in the city and its surrounding areas.

The Patna Metro Rail project's construction is currently in full swing. Once the first of four Tunnel Boring Machines (TBMs) named Mahavir was lowered at the Moin-Ul-Haq metro station with a 1,494 m drive length in the direction of Patna University station, it made a significant advancement. With this, the Patna Metro's tunnelling project officially starts. The TBM device will be used to complete the underground tunnelling project. The TBM Mahavir weighs approximately 420 MT, which is equal to the weight of 60 elephants. Together with the backup gantries, it consists of a cutter head, front shield, middle shield, and tail shield. The TBM's main body is around 9 metres long, and its entire EPB is about 95 metres long. The excavation diameter is 6,650 mm, with the precast ring lining with an outer diameter of 6,350 mm and inner diameter of 5,800 mm. The Chinese Railway Construction Heavy Industrial Corporation Ltd. (CRCHI) designed and produced these TBM machines. The TBM Mahavir bearing with serial number DZ1090 was first put together on the ground before being lowered into the cradle with the aid of Mega Lifts. Strand jacks with a combined lifting capability of 325 MT were used to raise it. The TBM at the metro station has been lowered using a total of four strand jacks. The cradle will be raised by the Mega lift and then pushed up to the TBM lowering point (Launching Shaft). After skidding, the TBM will be lowered into the shaft, which is approximately 16 m below ground level. On February 17, 2019, Prime Minister Narendra Modi laid the foundation stone for the projected Rs 133.65 billion Patna Metro rail project. It will have two corridors Danapur to Mithapur; and Patna Railway Station to New ISBT. After the Patna Metro project is finished, public transportation will be made easier in the city and its surrounding areas.

Next Story
Infrastructure Urban

India To Invest $37 Billion To Boost Petrochemical Capacity

India is set to become a major global player in the petrochemicals industry, driven by a planned capital expenditure of $37 billion (Rs 3.1 trillion) aimed at reducing import dependency and enhancing self-sufficiency, according to S&P Global Ratings.In its latest report titled “First China, Now India: Self-Sufficiency Goals Will Add To Petrochemicals Supply”, S&P said India’s large-scale capacity expansion—mirroring China’s earlier push—will likely intensify oversupply pressures in Asia’s petrochemical markets.Currently the world’s third-largest petrochemical consumer a..

Next Story
Infrastructure Transport

Indian Railways Expands Global Exports Of Rail Equipment

Indian Railways has announced that it is rapidly emerging as a global exporter of railway equipment, including bogies, coaches, locomotives, and propulsion systems, under the government’s ‘Make in India, Make for the World’ initiative.According to an official statement, India’s railway products are now reaching over 16 international markets, reflecting the country’s growing capacity to design, develop, and deliver world-class rail solutions.Metro coaches have been exported to Australia and Canada; bogies to the United Kingdom, Saudi Arabia, France, and Australia; propulsion systems t..

Next Story
Infrastructure Transport

RailTel Awards Rs 163 Million Contract To RTNS Technology

RailTel Corporation of India Limited (RailTel), a Mini Ratna Public Sector Undertaking, has awarded a domestic work order worth Rs 163 million to RTNS Technology Private Limited.The contract, issued on 30 September 2025, involves the supply and installation of equipment and related services for one of RailTel’s key customers. The project underscores RailTel’s commitment to advancing technology and communication infrastructure through collaboration with domestic system integrators.RTNS Technology Private Limited, an ISO-certified system integrator, provides comprehensive solutions for perim..

Advertisement

Subscribe to Our Newsletter

Get daily newsletters around different themes from Construction world.

STAY CONNECTED

Advertisement

Advertisement

Advertisement

Talk to us?