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Φ8780mm Tunnel Digging Machine , Earth Pressure Balance Shield Earth Drilling Machine

China National Complete Plant & Tools Co. Ltd.

Φ8780mm Tunnel Digging Machine , Earth Pressure Balance Shield Earth Drilling Machine

Brand Name : CSSC

Model Number : Φ8780mm

Certification : CE,ISO

Place of Origin : China

MOQ : 1 set

Price : Negotiation

Supply Ability : 1 set per 6 months

Delivery Time : 6 months after contact signed

Packaging Details : Reinforced with wooden case or section steels

Product Name : Shield Machine

Application : Rail Transit Construction

Size : Φ8780mm

Type : Earth Pressure Balance

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Φ8780mm Earth Pressure Balance Shield Machine

For more information please feel free to contact us at 8613436940854


1) Excavation diameter is large, suitable for high-speed inter city rail transit tunnel construction.

2) Keep the earth pressure, maintain the soil of excavation face stability, construction safety.

3) In the loose aquifer in construction of deep buried long tunnel technology and good economy etc.

4) Special measures such as soil improvement and other special measures can be taken in permeable stratum such as sandy soil, and the adaptability of geological condition is good.

5) Keep the earth pressure, speed control, and maintain the cutting volume of excavated volume phase equilibrium, the surface subsidence control precision.

6) Shield machine's advance, unearthed, assembled lining and so on the entire process to realize the automation work, the construction speed is quick, the labor intensity is low.

7) Construction site is small, does not affect the underground pipelines and other facilities, the construction of no noise and disturbance, the impact on the ground traffic is small.


1) Artificial earth fill.

2) Silty clay, mushy soil, fine sand, medium sand, coarse sand, round-gravle layer and silt under quaternary strata.

3) The rock stratum for halo weathering, high weathering and weak weathering of conglomerate sandstone and pebbly sandstone under paleogene system.


PositionProject NameParameter
Complete MachineLength of Main Engine11050mm

Length of Main Engine

(include Back-up)

Excavation DiameterΦ8820mm
Maximum Thrust72000KN
Supply Power10KV±10%×50Hz
External DiameterΦ8780mm
Internal DiameterΦ8560mm
Length of Cutter Ring900mm
Length of Support Ring5435mm
Length of Tail Ring4715mm
Clearance of Tail Ring30mm
Seal of Tail Ring

3+1 ranks


Cutter headCutterhead Aperture Ratio30%
TypePanel Type
Excavation DiameterΦ8820mm
Cutter144 pcs
Periphery Protect Cutter12 pcs
Cutter Box Protect Cutter30 pcs
Abrasive Detect Cutter2 pcs
Injection Hole Protect Cutter8 pcs
Single Edge Disc Cutter40 pcs
Double Edges Disc Cutter5 pcs
Center Disc Cutter4 pcs

Main Drive

Supporting ModeIntermediate Support
Cutterhead Motor



Working Torque10046KN·m
SpeedInfinite Speed Variation
Driving ModeElectrical Motor Drive
Revolution DirectionLeft/Right
Unlocking Torque12056KN·m

Product Tags:

shield tunneling machine


tunnel drilling machine

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