HOME > Product line > For Civil Engineering > Entrance Seal for Tunnel Shield
Operator can stay a distance from the D-Wall when pressurizing the tube; it will be safe and easier for operating.
Entrance Seal can be designed applying to different kinds of tunnel shape such as DOT, MF, Rectangular, etc., and also to the portion with which is difficult to deal on shield machine, such as grouting convex.
- RIPP （PDF・1.5MB）
- RIPP TUBE （PDF・0.5MB）
- Movable Bulkhead Method （PDF・0.6MB）
- FPAS （PDF・0.8MB）
- Dogleg-seal （PDF・0.5MB）
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- Entrance Seal with Self-Seal function for TBM Launch
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- Performance will be more excellent If Tube added.
(1) Grouting convex on machine
(2) Corner of the Rectangular Tunnel
(3) Connection of Arc on DOT, MF Shape of tunnel
(4) Bottom of the machine
(5) Circumference
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- Entrance Seal for the Arrival, machine will be reuse.
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- Tube will be pressurized to keep perfect sealing during shield machine’s movement.
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- Grouting convex on machine will also be sealed when Tube pressurized.
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- It is very safe to operate the Tube at a distance from the D-Wall.
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- Entrance & Exit seal equipment of automatic-seal style.
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- The seal is stored and operates by the tube pressurization.
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- The sealing can be used even by high ground-water pressure, because it is reinforced with the steel plate.
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- At the area of Backfilling device, still the seal is possible by pressurizing the tube.
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- Because the tube can be managed by remote controled, it is safety for worker.
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- Absorbing deflection and movement between structure and tunnel.
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- The rubber seal is not penetrated by bolts and keeps good sealing performance.
Heterotaxy can be absorbed under high water pressure.
As Group Company, the rubber rings of VICTAULIC Joints are all supplied by Mutsubishi Rubber, details please connect web site of the VICTAULIC.
