A tunnel boring machine (TBM) with a 13.1 metre wide cutter head will be used to dig India’s first undersea rail tunnel as part of the Mumbai Ahmedabad Bullet train project.
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://indianexpress.com/article/cities/mumbai/mumbai-coastal-road-project-tunnel-boring-machine-bullet-train-project-8659648/
Largest tunnel boring machine to be used for Mumbai-Ahmedabad bullet train project
indianexpress.comThe bullet train will consist of a 21km long tunnel between the underground station at Bandra-Kurla Complex and Shilphata in Maharashtra.