EARTH PRESSURE BALANCE MACHINE (EPBM)
Earth Pressure Balance Machine
Earth Pressure Balance Machine (EPBM) systems are complex in design and performance and are custom built to suit project parameters. EPBMs are capable of curves and extended lengths with extreme accuracy using a specialized guidance system. The Pipe Jacking EPBM and pipe sections are advanced by a hydraulic jacking frame in the launch shaft. The Segment Erecting EPBM positions segments to form a ring to build the tunnel. The EPBM advances itself off the previously built ring with hydraulic cylinders.