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Composite rubber vertical rod telescopic plug plate and use method thereof

A technology of compound rubber and plug board, which is applied in earth-moving drilling, lifting device, wellbore lining and other directions, can solve the problem of inconvenient installation of wooden boards or steel formwork, inconvenient installation of buried water stop belt, and easy damage to waterproof surrounding rock waterproof board and other problems, to achieve the effect of improving the sealing performance of the mold and the effect of closing the mold, improving the waterproof performance, and eliminating the hidden danger of water leakage in the tunnel.

Active Publication Date: 2017-08-18
SICHUAN HAODESI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many problems in this method: the workload of the working method of laying plank plugs at the end of the formwork trolley is large (it usually takes 4 people and 8 hours to lay a circle), and the removal of the mold is also troublesome; not only wastes a lot of Wood, the reuse rate of wood is low, and because the closing effect of wood is poor, there are also a large number of holes and leaks, especially in the reinforcement where it is not easy to seal, and other soft materials need to be used to plug the holes in the later stage. The problem of cement slurry leakage and waste cannot be avoided; wooden boards are used to close the mold, and the joints of the plug boards are too many, which directly leads to the extremely inconvenient installation of the buried waterstop, and it is necessary to install the buried waterstop along the The planks are folded so as to be closed in the mold, so it is easy to cause the misalignment of the position of the waterstop between the adjacent secondary lining pouring models, and the proper waterstop effect cannot be achieved; the corners of the planks are easy to damage the waterproof surrounding rock waterproof board, causing hidden dangers of water leakage and slurry leakage in the tunnel
However, it is also due to the existence of a reserved section of steel bar that no matter whether a wooden board or a steel formwork is used as the end formwork plug, it will affect the installation of the formwork, and there are problems of mold closing sealing and mold closing effect.
Therefore, technicians usually cut off the reserved steel bars during actual work, which causes inconvenience in the installation of wooden boards or steel formwork, and eventually leads to serious water and grout leakage in existing tunnels

Method used

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  • Composite rubber vertical rod telescopic plug plate and use method thereof
  • Composite rubber vertical rod telescopic plug plate and use method thereof
  • Composite rubber vertical rod telescopic plug plate and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] A composite rubber vertical pole telescopic plug plate, which includes a trolley 1, a rubber baffle, a back-mounted waterstop, and a waterstop 12. A support base 2 is fixedly connected to the trolley 1, and a lifting mechanism 8 is connected to the support base 2, through which the lifting mechanism 8 can push the rubber baffle above it. There are at least two groups of rubber baffles, and multiple groups of rubber baffles are stacked and arranged below the tunnel roof 11 from bottom to top. The back-adhesive waterstop is set between the tunnel roof 11 and the uppermost rubber baffle, and the waterstop 12 is set between two adjacent rubber baffles; if there is a reinforcement layer reserved on the previously poured concrete, it can The upper and lower layers of rubber baffles at the corresponding positions clamp the reinforcement layer.

Embodiment 2

[0074]On the basis of Embodiment 1, the telescopic mechanism adopts a manual lifting mechanism 8, which includes a fixed box 82, a fixed screw rod 81 and a fixed nut 83, and the fixed box 82 and the fixed nut 83 are installed in the support seat 2. The fixing nut 83 cannot rotate in the support seat 2 . The fixed box 82 and the fixed nut 83 can be connected as a whole, and can also be separated, as long as the fixed nut 83 cannot be rotated. The fixing screw 81 is sleeved in the fixing box 82 and the fixing nut 83 , the fixing screw 81 is threadedly connected with the fixing nut 83 , and the two ends of the fixing screw 81 pass through the upper surface and the lower surface of the support base 2 respectively. The upper end of the fixed screw 81 is connected with the bottom rubber baffle. By rotating the fixed screw 81, the fixed screw 81 can move along the axial direction of the fixed screw 81 on the support seat 2, thereby realizing the upward movement and downward movement ...

Embodiment 3

[0076] On the basis of Embodiment 1 or Embodiment 2, a lifting mechanism 7 is also provided. The lifting mechanism 7 is connected to the support base 2, and the lifting mechanism 7 is mainly used to fix the back-mounted waterstop on the 11 on top of the tunnel.

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Abstract

The invention discloses a composite rubber vertical rod telescopic plug plate and a use method thereof and belongs to the technical field of tunnel construction. By adoption of the composite rubber vertical rod telescopic plug plate and the use method thereof, the hidden dangers such as water leakage and slurry leakage of a tunnel are avoided. The telescopic plug plate comprises a trolley, a supporting base and rubber baffles. A back pasting type watertight strip is arranged between the tunnel roof and the uppermost layer rubber baffle. A watertight strip and / or a steel bar layer is arranged between every two adjacent rubber baffles. The supporting base is connected with a hoisting mechanism which is connected with the lowermost layer rubber baffle. The use method adopts the telescopic plug plate, and a lifting telescopic rod of a lifting mechanism is rotated, so that the connecting end of the lifting telescopic rod acts on the back pasting type watertight strip, and the back pasting type watertight strip is tightly attached to the tunnel roof to enable the watertight strips and the back pasting type watertight strip to be smoothly located between the second rubber baffle and the third rubber baffle as well as between the first rubber baffle and the tunnel roof correspondingly.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction and relates to a plug formwork for secondary lining of tunnels. Background technique [0002] Existing roads and railways are usually built using the new Austrian method, and in the construction of tunnels, after the excavation of the cave body is completed, a layer of concrete cave body protection layer with a thickness of about 370mm must be poured, and the trolley is used for the tunnel A device used in pouring concrete during construction. At present, the secondary lining of tunnels is mostly constructed by lining trolley mold construction method. In order to prevent the leakage of each secondary lining construction seam, a mid-buried rubber waterstop is designed and installed at the end of the secondary lining. When pouring the secondary lining with a trolley, a plug plate is required to close the mold between the formwork trolley and the surrounding rock. When closing the mold, ...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D11/38B66F11/00
CPCE21D11/102E21D11/38B66F11/00Y02E10/20
Inventor 李富友
Owner SICHUAN HAODESI NEW MATERIAL TECH CO LTD
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