Bullet Train Project Advances With Assembly of Massive TBMs

The National High Speed Rail Corporation Limited (NHSRCL) on Sunday announced that the first Tunnel Boring Machine (TBM) cutterhead has been lowered at Vikhroli for the construction of a tunnel section of the Mumbai-Ahmedabad bullet train project.

According to an official release, the cutterhead has a diameter of 13.6 metres and weighs approximately 350 tonnes. Its lowering marks the final stage in the primary assembly of the TBM’s main shield for the high-speed rail corridor.

Officials said two massive TBMs, each weighing more than 3,000 tonnes, are currently being assembled for the construction of a 16-kilometre section of the 21-kilometre-long Mumbai tunnel.

The tunnel section includes a 7-kilometre undersea tunnel beneath Thane Creek, which is expected to become India’s first undersea rail tunnel.

The Mumbai-Ahmedabad high-speed rail corridor is India’s first bullet train project and is considered one of the country’s most ambitious transport infrastructure initiatives.

The project aims to significantly reduce travel time between Mumbai and Ahmedabad while introducing advanced high-speed rail technology in India.

Officials stated that the deployment of the TBMs marks an important engineering milestone in the project, especially for the technically challenging underground and undersea tunnel sections.

The bullet train corridor is being developed with technical collaboration from Japan and is expected to enhance connectivity, economic activity, and modern rail infrastructure in western India.