Here's how the tunnel boring machine, or TBM, works: As the 200-ton TBM moves forward, a round cutter head studded with titanium teeth grinds into the tunnel face and splits large chunks off the rock.

On April 17, Mary the Tunnel Boring Machine emerged through the headwall at the Hampton end of the HRBT. Exactly six months later, she's starting her next journey: creating the twin eastbound ...

After multiple delays, including a 9-month delay involving a century-old anchor, the Chesapeake Bay Bridge-Tunnel (CBBT ...

Chennai Metro Rail's tunnel linking Light House with Thirumayilai for phase II project to be completed by September.

Liam Clarke and his father Graham are miners on a tunnel boring machine ... These machines will then be hauled out and decommissioned. Michael Greiner is the head of tunnelling at SCS JV.

On March 26th, 12.68m diameter TBM ‘Strong Foundation’ developed by China Railway Construction Heavy Industry Corporation ...

BENTONG: The two tunnel boring machines (TBM ... He noted that the TBM cutter heads from China are equipped with four torque cylinders and weigh 900 tonnes each. They are 25m long and have ...

BENTONG: The two tunnel boring machines (TBMs), which will excavate ... says Transport Minister Datuk Seri Dr Wee Ka Siong. With a cutter head diameter of 8.98m, the entire TBM will be 266m ...

The entire three levels of the tunnel boring machine have been cut till ... or in a 3-metre long cavern behind the machine’s cutting head, which falls beyond the 50 metre zone.