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.
China's largest shield tunneling machine cutter head, with a record-breaking diameter of 16.64 meters, descended at the construction site of the Haitai Yangtze River Tunnel in East China's Jiangsu ...
VIRGINIA BEACH, Va. — After multiple delays, including a 9-month delay involving a century-old anchor, the Chesapeake Bay ...
On April 17, Mary the Tunnel Boring Machine emerged through the headwall at the Hampton end of the HRBT. Exactly six months ...
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China unveils 5,000 metric ton-heavy tunnel boring machine with largest-diameterChina has completed the production of its largest tunnel-boring ... river dams. The machine is 476 feet long and weighs about ...
Chennai: ‘Adyar', the tunnel- boring ... the last 300 metres, the machine encountered hard rock, making the process slower and more demanding. Cutting tools (cutter heads) were replaced several ...
TERRATEC, a manufacturer of tunnel boring machines (TBMs ... if necessary. The machine's CutterHead is fitted with 15in heavy-duty back-loading disc cutters and is driven by variable frequency ...
After multiple delays, including a 9-month delay involving a century-old anchor, the Chesapeake Bay Bridge-Tunnel (CBBT ... and caused damage to the machine cutter head. CBBT officials said ...
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