Φ8780mm Earth Pressure Balance Shield Machine
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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
|Complete Machine||Length of Main Engine||11050mm|
Length of Main Engine
|Length of Cutter Ring||900mm|
|Length of Support Ring||5435mm|
|Length of Tail Ring||4715mm|
|Clearance of Tail Ring||30mm|
|Seal of Tail Ring|
|Cutter head||Cutterhead Aperture Ratio||30%|
|Periphery Protect Cutter||12 pcs|
|Cutter Box Protect Cutter||30 pcs|
|Abrasive Detect Cutter||2 pcs|
|Injection Hole Protect Cutter||8 pcs|
|Single Edge Disc Cutter||40 pcs|
|Double Edges Disc Cutter||5 pcs|
|Center Disc Cutter||4 pcs|
|Supporting Mode||Intermediate Support|
|Speed||Infinite Speed Variation|
|Driving Mode||Electrical Motor Drive|