TBM IN SOFT GROUND
TBM IN SOFT GROUND TBM IN SOFT GROUND
Course in Tunnelling and Tunnel Boring MachineKurs w zakresie drążenia tuneli oraz maszyny drążącejFOAM: FOAM INJECTION RATEfoamFoam Injection Rate (FIR):screw conveyorFIR regulates amount of foamFIR correlates with pore volumeFIR = volume foam / volume soilFIR correlates with advance ratebelt conveyor
Course in Tunnelling and Tunnel Boring MachineKurs w zakresie drążenia tuneli oraz maszyny drążącejFOAM:FOAM EXPANSION RATEAdditive (2 - 5%)Foam Expansion Rate (FER):FER regulates qualityWater (95 - 98%)FER 14:11 Liquidlow FER = wet foamhigh FER = dry foamFER = volume foam/volume liquid13 air
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Course in Tunnelling and Tunnel Boring MachineKurs w zakresie drążenia tuneli oraz maszyny drążącejFOAM: FOAM <strong>IN</strong>JECTION RATEfoamFoam Injection Rate (FIR):screw conveyorFIR regulates amount of foamFIR correlates with pore volumeFIR = volume foam / volume soilFIR correlates with advance ratebelt conveyor
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