ZT Series Dual-Mode TBM

 EPB/SPB Dual-Mode Shield

EPB/SPB Dual-Mode Shield

The dual-mode shield possesses both advantages of EPB and SPB, it is used in wide geological condition with clay, sandy soil, soft & hard compound stratum and rich water stratum. It owns both the good geology adaptability and using economical efficiency. Under EPB mode, it uses chamber’s muck to balance the tunnel face’s pressure and deliver muck with screw conveyor. Under SPB mode, it uses chamber’s slurry to balance the tunnel face’s pressure and deliver muck with slurry pipe. According to user’s construction demand, the two modes can be switched freely in the tunnel.
Product Type:ZTSE6250

ItemParameter
excavation modeEPB/SPB
excavation diameter6280 mm
total length105 m
Min. curve radius250 m
driving typehydraulic
articulation typepassive articulation
total power1500 kW
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