Recent advancements in rock cutting and tunnel boring machine (TBM) performance have underscored the importance of optimising cutter design, operational parameters and understanding rock fracture ...

The study of disc cutter wear in tunnel boring machines (TBMs) is fundamental to optimising both the economic and operational performance of subterranean construction projects. Disc cutter wear ...

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.

Next year, the first modern tunnel-boring machines ever used in New Jersey will arrive in North Bergen to begin drilling the first mile of the $16 billion Gateway Tunnel through the rocky Palisades.

A colossal project to reduce traffic in the underground tunnels connecting the Virginia cities of Norfolk and Hampton just had a big breakthrough — literally. Since 1957, the two cities have been ...

VIRGINIA BEACH — Now that the anchor’s away, expansion work at the Chesapeake Bay Bridge-Tunnel is back at full bore. Burrowing of a new tunnel to help carry more vehicles between Virginia Beach and ...