| Home > R & D and Technologies > Shield Tunneling Methods > J-DPLEX Shield |
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To realize further cost cut of machine and construction, we, together with Japan Institute of Wastewater Engineering Technology and machine manufacturer, started study in 1998 and developed jack-driven J-DPLEX as opposed to DPLEX driven by combination of motor and gear. J-DPLEX is developed by Daiho and successfuly applied to sewage tunnel project for the first time in the world.
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Technical Aspect & Advantages: |
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1) |
Flexible cutting section shapes: round, square, oval, rectangular, horse
shoe etc. (same as DPLEX) |
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2) |
Required cutter torque is smaller than conventional type and thus energy
saving |
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3) |
Long distance continuous excavation without changing bit |
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4) |
Easier chemical injection for ground stabilization from machine inside |
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5) |
Price is lower than other conventional type incl. DPLEX |
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6) |
Machine length is smaller than other conventional type enabling smaller
shaft |
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7) |
Power consumption for cutter drive is smaller than conventional type by
10~30%. |
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8) |
Easier transportation, assembly, disassembly and operation |
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Hydraulic jack's expansion & contraction
movement is changed into rotation
movement by crank. Rotation force is
transmitted to each driving axis through
connection disc.
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Jack drive system is superior in minimized power consumption and less by-products as well. |
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Due to reduced power consumption, shorter and compact machine, it became possible to reduce total construction cost substantially. |
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| Machine & Cutter Drive Portion for Higashi-Ogu 2~6 Chome Sewage Tunnel,Tokyo (2004) |
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