The 47.2-ft diameter rock Robbins TBM used for the Niagara Tunnel project was the largest rock TBM in the world.
TAC – Rock Tunnelling Workshop, Sheraton Wall Centre Hotel, Vancouver, BC Jens Classen: Mechanical Excavation, 16.11.2013 Rock Cutting process. •The cutterhead of Hard Rock TBM´s are equipped with disc cutters.
A tunnel boring machine (TBM), also known as a "mole", is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata.They may also be used for microtunneling.
RETC is proud to present more than 21 technical sessions featuring the leading practitioners in the tunneling industry from across the U.S. The primary focus of the technical program is to add value to the industry through examination of the most innovative practices and products currently in use.
WITS SPECIAL EDITION - VOLUME I . A review of rock cutting for underground mining: past, present, and future . D. Vogt. Centre for Mechanised Mining Systems, University of the Witwatersrand Johannesburg, South Africa
KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.