Digging tunnels has become easier and safer thanks to custom-designed tunnel-boring machines. Tunnel-boring machines (TBMs) could be the ultimate power tool. They're monstrous, weighing millions of ...

Bhopal (Madhya Pradesh): The second Tunnel Boring Machine (TBM) to dig the metro tunnel will be launched this month. Its installation process has been completed and the launch is awaited. It will be ...

Chinese and Russian construction workers have completed the first large-diameter tunnel boring work by a Chinese company in the European market, when a tunnel boring machine (TBM) dug through a ...

Add Yahoo as a preferred source to see more of our stories on Google. Pictures show HS2 launching a 316-tonne machine component that will dig its way under west London. A crane was seen lowering part ...

Tunnel boring machine (TBM) Urvi has been disassembled 17m below the ground and is being lifted part by part for extensive overhauling ahead of its final assignment. TBM Urvi’s disassembled cutterhead ...

The largest tunnel boring machine (TBM) ever used on a UK rail project, has been launched as part of the first phase of construction on HS2 – the high-speed rail connection set to run between London ...

The TBM will erect precast concrete liners positioned to within millimeters as the tunnel is dug. During digging, pressure in front of and around the cutting head will be maintained at 4.5 bar to ...