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Grouting pipe and concrete defect repairing method

A technology for grouting pipes and concrete, which is applied in earthwork drilling, soil protection, wellbore lining, etc., and can solve problems such as easy falling and thin secondary lining

Active Publication Date: 2017-03-15
北京鸿锐嘉科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to provide a grouting pipe, which combines grouting and mechanical bolts and anchors, and anchors the injected grout and the original concrete into a stressed whole to solve the two problems in the prior art. The thickness of the lining is too thin and it is easy to fall off
[0012] The purpose of the present invention is to also provide a method for repairing concrete defects, which uses the above-mentioned grouting pipe, so that when repairing concrete defects, the problem of the secondary lining being too thin and easy to fall in the prior art can be solved

Method used

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  • Grouting pipe and concrete defect repairing method
  • Grouting pipe and concrete defect repairing method
  • Grouting pipe and concrete defect repairing method

Examples

Experimental program
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Effect test

Embodiment 1

[0073] This embodiment provides a grouting pipe, which includes an expansion grouting pipe, a conical head, a fastening screw, a thrust bearing, a fixed pressure plate and a wheel disc.

[0074] The expansion grouting pipe is a hollow cylinder with a plurality of grouting holes on its side wall; at least two gaps are opened on the side wall of one end of the expansion grouting pipe along its axial direction, and the other One end is provided with a thread for connecting the grouting machine; the thread can be an internal thread or an external thread, as long as the connection between the grouting fixed connection pipe of the grouting machine and the expansion grouting pipe can be realized, of course, the expansion The other end of the grouting pipe may not be provided with threads, and at this time, the other end of the expansion grouting pipe may be connected to the grouting fixed connection pipe of the grouting machine by welding or the like; in this embodiment, preferably T...

Embodiment 2

[0086] This embodiment provides a method for repairing concrete defects (punching first, then strengthening), that is, a grouting method using the grouting pipe described in Embodiment 1, which includes the following steps:

[0087] S10. Drilling of the second-lined concrete: After detecting the position of the cavity by radar or other means, punch holes in the part that needs to be reinforced by grouting. The diameter of the hole is 1-5mm larger than the expansion grouting pipe. Note: the depth of the hole must be certain To exceed the thickness of the second lining concrete here. The drilling depth is based on the actual design. One is that the depth does not exceed the design thickness of the lining, that is, it does not exceed the waterproof board; the other is that the depth penetrates the waterproof board and extends into the surrounding rock.

[0088] S20, apply bonding material in the hole: apply bonding glue in the hole punched in step S10, for bonding and fixing the ...

Embodiment 3

[0109] When the grouting pipe in embodiment 1 includes a reinforcing pipe, the concrete defect repair method (perforating first and then strengthening), that is, a grouting method using the grouting pipe described in embodiment 1, comprises the following steps :

[0110] S110. Drilling holes in the second-lined concrete: After detecting the position of the cavity by radar or other means, punch holes in the part that needs to be reinforced by grouting. To exceed the thickness of the second lining concrete here. The drilling depth is based on the actual design. One is that the depth does not exceed the design thickness of the lining, that is, it does not exceed the waterproof board; the other is that the depth penetrates the waterproof board and extends into the surrounding rock.

[0111] S120, apply bonding material in the hole: apply bonding glue in the hole punched in step S110, for bonding and fixing the expansion grouting pipe in the hole of the secondary lining concrete, ...

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Abstract

The invention discloses a grouting pipe. The grouting pipe comprises an expansion grouting pipe body, a conical head, a fastening threaded rod and a wheel disc. The expansion grouting pipe body is a hollow barrel body. The side wall of one end of the expansion grouting pipe body is provided with at least two notches in the axial direction of the side wall of one end of the expansion grouting pipe body. The conical head is a conical body of which the radius is gradually decreased from left to right. An inner threaded hole is formed in the central axis direction of the conical head. The fastening threaded rod is a metal rod with an outer thread. One end of the fastening threaded rod is screwed into the conical head, and the other end of the fastening threaded rod penetrates through the expansion grouting pipe body and is connected with the wheel disc. The invention further discloses a concrete defect repairing method.

Description

technical field [0001] The invention relates to a grouting pipe and a grouting process, in particular to a grouting pipe and a method for repairing concrete defects. Background technique [0002] Our country is a mountainous country, so the amount of tunnels is also very large. In the tunnel lining (secondary lining) construction, due to the special position of the vault, the construction may be due to the reservation of pouring and unreasonable setting of plugging holes, the slump of the pumped concrete is large, the pressure of the pumped concrete is not well controlled, and the concrete Shrinkage, uneven support and other reasons will inevitably cause the second-lined vault and the concrete primary support surface to not adhere closely, and the concrete capping of the arch is prone to voids and cavities. Due to secondary lining defects, the stress on the lining is uneven, which deteriorates the stress condition of the lining and changes the stress state of the lining des...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12E02D15/04E21D11/10
CPCE02D3/12E02D15/04E21D11/105
Inventor 佘海龙
Owner 北京鸿锐嘉科技发展有限公司
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