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The Akkerman Guided Boring Machine (GBM) system offers customers accurate and extended drive lengths in various ground conditions for 4-48-in. (102 - 1,219 mm) OD pipe installations. The GBM provides the spoil removal process of the auger boring machine and the same level of accuracy as traditional microtunneling—all in one compact, multifaceted system. >> more

Microtunnel Boring Machines (MTBMs) in standard sizes of 30-96-in. (762-2,438 mm) OD, accurately install pipe in virtually any ground condition, especially in high levels of ground water. >> more

Tunnel Boring Machines (TBMs) and Boring Shields (BSs) are used to install 48-93-in. (1,219-2,362 mm) and 96-168-in. (2,438-4,267 mm) OD jacking pipe. Both systems 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 system for disposal in the launch shaft. The BS system excavates soil with a backhoe-type excavator at the face of the bore and is removed in the same manner as the TBMs. >> more

Earth Pressure Balance Machine (EPBMs) Systems install pipe by pipe jacking or segment erecting methods. EPBMs excavate soil while balancing machine and soil pressures to minimize ground settlement. With both methods, soil from the EPBM cutter chamber is injected with foam and slurry to balance the face pressure then removed through screw conveyors and a haul unit system. >> more