Products

TBM SOFT / MIXED GROUND

For tunnelling projects in soft-ground or mixed geology with small overburden, generally carried out under cities, the TBM has to control accurately the pressure in the excavation face, which must be higher than the one inside the boring machine.

S65 171212 DJ 05
S73 181024 DJ 28

EARTH PRESSURE BALANCE MACHINE

The Earth Pressure Balance Shield Machine (EPBM) evacuates the material through a Screw Conveyor. The pressure in the front of the machine is controlled by regulating the advancing speed of the shield and the evacuation flow. The EPBM can work with or without pressure in the front in stable layers.

S112 230623 DJ 27
S112 230623 DJ 29

SLURRY SHIELD

The Slurry Shield TBM is suitable for excavating soils or mixed formations with high water content. This TBM is equipped with a Slurry System which controls the pressure in the excavation face by injecting pressurized slurry into the Cutter Chamber where the slurry is mixed with the excavated material. The mixture is pumped out of the Tunnel to a separation and recirculation plant.