EPBM Systems Product Guide0 pages

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Many cutter head configurations are available for The pipe jacking EPBM control console is located Spoils are mixed with foam and slurry to ease in

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optimum soil displacement from the EPBM face. inside the tunnel where operators have full excavation.

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control over all functions.The screw conveyor

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advances spoils into the haul unit dirt bucket.

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EARTH PRESSURE BALANCE SYSTEMS

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The Akkerman name has long been associated with industry

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leading projects. Earth Pressure Balance Machine (EPBM)

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systems have furthered our project realm while offering

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customers a U.S. manufactured product with the same level

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of reliability and service options that come with all of our

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equipment.

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The pipe jacking EPBM excavates spoil by balancing the

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machine face pressure with the soil pressure, thus minimizing

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ground settlement. Spoils from the cutter chamber are mixed

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with foam and slurry to balance the face pressure and are

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removed through the screw conveyors and haul system.

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Operators, in a control console, guide the machine and monitor

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targeting data, pressures, positions, speed, torque and flow

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to pilot an accurate course. A hydraulic jacking frame in the

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launch shaft advances the machine and when retracted, a new

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pipe section is inserted. Many custom cutter tools and drag bit

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configurations are available for the mixed face or soft ground

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bi-directional cutter head.

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station, segment handling, hydraulics, VFD, transformers, and

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blower cars.

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Akkerman EPBM systems, complex in design and performance,

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are custom built to suit project demands. We work closely

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with our customers, thoroughly analyzing the project and

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recommending a system, to complete the job efficiently and

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on budget.

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Thesegmenterecting EPBM is custom builttojobspecifkations.

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The main distinction between the pipe jacking EPBM and those

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designed for segment erecting is the machine's capability to

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install concrete segments, curved tunnels and extended drive

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lengths.The spoil removal process through a screw conveyor is

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essentially the same as other pipe jacking applications. A series

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of back-up cars follow behind the EPBM, housing the operator

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Many specialized back-up cars are needed to

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perform the complex operations of the segment

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erecting EPBM.

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The segment erector places tunneling segments The control console car is where the operator

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in the appropriate position then the EPBM monitors and adjusts all EPBM functions.

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advances off of the tunnel to move forward.

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