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• Tunnel boring machine earth pressure balance - ø 1.7 - 16 m | EPB Shield

Tunnel boring machine earth pressure balance - ø 1.7 - 16 m | EPB Shield

For soft, cohesive soils tunnel boring machines with earth pressure support are a preferred option. So called Earth Pressure Balance Shields (EPB) turn the excavated material into a soil paste that is used as pliable, plastic support medium. This makes it possible to balance the pressure conditions at the tunnel face, avoids uncontrolled inflow of soil into the machine and creates the conditions for rapid tunnelling with minimum settlement.

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