Tunnel Boring Systems
Tunnel Boring Machines (TBMs) are used to install 48-96-in. OD jacking pipe and are interiorly controlled by an operator. TBMs excavate soil at the face of the bore when hydraulic motors rotate the inner drum, the cutter head excavates and soil is transported via conveyor and haul unit for disposal from the launch shaft. The pipe laser in the launch shaft projects a laser point on the cutter face for the operator to monitor and make steering corrections as necessary. For extended length drives, the AZ100 Total Guidance System is used for tunnel navigation. The all-in-one Tunnel Boring System easily adapts to any jacking pipe with an appropriately sized TBM, yoke and skid sections. A complete Tunnel Boring System is comprised of a TBM, pump unit, yoke, skid, haul unit, conveyor, pipe laser and often a bentonite pump.