The much-awaited tunnel boring machines to build the country’s first undersea rail tunnel for the Mumbai-Ahmedabad high-speed bullet train project are on their way and will be delivered at the Jawaharlal Nehru Port Trust in Mumbai on Monday, sources said.
The customised TBM was manufactured by the German company Herrenknecht in its unit based in China.
Officials said that these TBMs are among the largest and most expensive in the country, with a diameter of 13.1 meters, one of the biggest ever to be used in any rail project in India.
Usually, TBMs with cutter heads of 5 or 6 meter diameter are used for urban tunnels used in the MRTS Metro system.
The package C2 of the Mumbai-Ahmedabad High Speed Rail Project, under which the undersea tunnel comes, is being executed by Afcons Infrastructure Ltd. The whole package involves a 20.37 km-long tunnel.
“Of this, 4.8 km has been completed through the New Austrian Tunnelling Method (NATM) in September 2025, while the remaining 15.489 km wil​The much-awaited tunnel boring machines to build the country’s first undersea rail tunnel for the Mumbai-Ahmedabad high-speed bullet train project are on their way and will be delivered at the Jawaharlal Nehru Port Trust in Mumbai on Monday, sources said.
The customised TBM was manufactured by the German company Herrenknecht in its unit based in China.
Officials said that these TBMs are among the largest and most expensive in the country, with a diameter of 13.1 meters, one of the biggest ever to be used in any rail project in India.
Usually, TBMs with cutter heads of 5 or 6 meter diameter are used for urban tunnels used in the MRTS Metro system.
The package C2 of the Mumbai-Ahmedabad High Speed Rail Project, under which the undersea tunnel comes, is being executed by Afcons Infrastructure Ltd. The whole package involves a 20.37 km-long tunnel.
“Of this, 4.8 km has been completed through the New Austrian Tunnelling Method (NATM) in September 2025, while the remaining 15.489 km wil ​Latest News [ SOBAN NEWS: International and National ]
