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Reinforcing protection treatment method for tunnel lining defects

A technology for lining and tunneling, which is applied in the field of tunnel lining concrete repair technology, and can solve problems such as less thickness of invasion, non-invasion, and falling off of lining concrete

Active Publication Date: 2020-12-04
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

[0008] The purpose of the present invention is to provide a reinforcement and protection treatment method for tunnel lining defects, which solves the problem that the lining concrete falls off or falls off locally, or the thickness of the large-area concrete is seriously insufficient, and the repaired part is required not to invade, or the thickness of the invasion must be very small problem, and accommodates the stripping action of train piston winds without causing joyrides or blows

Method used

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  • Reinforcing protection treatment method for tunnel lining defects
  • Reinforcing protection treatment method for tunnel lining defects
  • Reinforcing protection treatment method for tunnel lining defects

Examples

Experimental program
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Effect test

Embodiment 1

[0089] refer to figure 1 and figure 2 , this embodiment provides a treatment method for reinforcement and protection of tunnel lining defects, that is, a treatment method for serious defects such as falling blocks or falling off of railway tunnel lining, which is suitable for situations where there is no requirement for intrusion limit and the strength of concrete is slightly better. include:

[0090] S10. Lining concrete surface treatment

[0091] In this embodiment, in the area where the defects of the lining concrete 1 need to be treated, the surface protrusions or bosses of the lining concrete 1 are polished. For defects such as potholes (such as potholes with a diameter greater than 10cm) on the surface of the tunnel, it is necessary to use repair materials such as cement-based repair mortar, epoxy repair mortar, etc. to fill and repair until the surface concrete is smooth.

[0092] Alternatively, in the area where the defect treatment of the lining concrete is requir...

Embodiment 2

[0110] refer to image 3 with Figure 4 , this embodiment provides a reinforcement protection treatment method for tunnel lining defects, that is, a treatment method for railway tunnel lining to prevent serious defects such as falling blocks or falling off. include:

[0111] S10. Lining concrete surface treatment

[0112] In the area where the defect treatment of the lining concrete 1 is required, the surface protrusions or bosses of the lining concrete 1 are polished. For defects such as potholes (such as potholes with a diameter greater than 10cm) on the surface of the tunnel, it is necessary to use repair materials such as cement-based repair mortar, epoxy repair mortar, etc. to fill and repair until the surface concrete is smooth.

[0113] Alternatively, in the area where the defect treatment of the lining concrete is required, the floating soil on the surface of the lining concrete is cleaned, and the loose concrete blocks are removed to complete the surface treatment ...

Embodiment 3

[0130] refer to Figure 5 with Image 6 , this embodiment provides a reinforcement and protection treatment method for tunnel lining defects, that is, a treatment method for serious defects such as falling blocks or falling off of railway tunnel lining, which is suitable for cases where there is an invasion limit requirement and the concrete strength is slightly better, including :

[0131] S10, Second lining concrete surface treatment and grooving

[0132] In the area where the defect treatment of the lining concrete is required, the protrusions or bosses on the surface of the lining concrete are polished. For defects such as potholes (such as potholes with a diameter greater than 10cm) on the surface of the tunnel, it is necessary to use repair materials to fill and repair until the surface concrete is flat. The repair materials can be cement-based repair mortar or epoxy repair mortar.

[0133] Alternatively, in the area where the defect treatment of the lining concrete i...

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Abstract

The invention discloses a reinforcing protection treatment method for tunnel lining defects. The reinforcing protection treatment method comprises the steps that the surface of lining concrete is brushed, sprayed or smeared with a bonding material; at least one layer of reinforcing net is pasted on the surface of the lining concrete in the longitudinal or circumferential direction of the tunnel; and the reinforcing net is fixed to the tunnel lining through a reinforcing structure. According to the reinforcing protection treatment method for the tunnel lining defects, through combination of thereinforcing net and the reinforcing structure, that is, through a protection matching reinforcing rigid-flexible combination method, the problems of cracking and chipping of tunnel lining concrete, especially sudden falling of concrete with cold joints, are solved, the problem of safety risk of air blast falling caused by train wind of protective reinforcement measures is solved, and a key role is played in railway tunnel operation safety.

Description

technical field [0001] The invention relates to a tunnel lining concrete repair process, in particular to a treatment method for serious defects in the tunnel lining. Background technique [0002] Our country is a mountainous country, so the amount of tunnels is also very large. By the end of 2017, China Railway had put into operation 14,547 railway tunnels, with a total length of 15,326 kilometers. By the end of 2018, there were 17,738 road tunnels in China, with a total length of 17,236 kilometers. With the continuous increase of tunnel operation time, the internal quality hidden dangers of the tunnel lining gradually emerge under the interaction of various external environmental factors, resulting in the structural defects of the tunnel lining, and the structural defects of the tunnel directly affect the bearing capacity of the tunnel lining structure. The reduction will lead to structural deformation, and even catastrophic consequences such as rupture and collapse of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21F17/18
CPCE21D11/10E21D11/107E21D11/14Y02E10/20
Inventor 佘海龙耿春雷
Owner 北京鸿锐嘉科技发展有限公司
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