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Reinforcement technology of reinforced concrete tunnel lining steel plate

A technology of reinforced concrete and steel plates, applied in tunnel lining, tunnel, shaft lining, etc., can solve problems such as unsatisfactory effect and leakage

Inactive Publication Date: 2010-06-23
STATE GRID XINYUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effects are not satisfactory, especially for serious leakage and high requirements for tunnel quality, the above-mentioned technical measures cannot meet the requirements.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The invention provides a reinforced concrete tunnel inner lining steel plate reinforcement technology capable of effectively treating seepage water in the tunnel.

[0014] A reinforced concrete tunnel lining steel plate reinforcement technology, it comprises the following steps:

[0015] a. Divide the 6mm thick steel plate into small pieces of 3.33m×1.25m, and transport them to the construction site after being bent and formed in the processing plant;

[0016] b. Grind and chisel the concrete surface until the new surface is completely exposed, then connect compressed air to blow off the dust, and use sandblasting to remove embroidery on both sides of the steel plate;

[0017] c. Lay out and drill holes on the substrate concrete and steel plate surface, assemble, weld, pre-embed expansion bolts or anchor rods, etc.;

[0018] d. Use perfusion-type hydrophilic epoxy structural adhesive, and use WSS sealant to seal all parts that are prone to loss of adhesive, so as to pr...

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Abstract

The invention discloses a reinforcement technology of a reinforced concrete tunnel lining steel plate by which a reinforced concrete surface can be better bonded with a steel plate surface. The steel plate assembles an embedded expansion bolt or an anchor rod to ensure firm rigid connection; pouring hydrophilic epoxy structural adhesive is adopted to seal each position which is easy to lose adhesive by WSS sealant so as to prevent glue solution from draining and ensure glue pouring compactness; fine repairing and glue pouring are carried out to ensure compactness; after a structure is solidified, the steel plate is assembled and welded to satisfy the stress requirement of the tunnel structure, which does not affect fluid-crossed sections basically; and polishing, cleaning and paint make-up are adopted to prolong the service life and greatly improve the leakage effect of a tailrace tunnel, and the leakage amount approaches to zero.

Description

technical field [0001] The invention belongs to the technical fields of construction of pressure tunnels, highway tunnels, and railway tunnels of water conservancy and hydropower projects, and particularly relates to a reinforced concrete tunnel lining steel plate reinforcement technology. Background technique [0002] When tunnels or tunnels pass through caves or pass underground, because there may be a large number of dominant or hidden water sources near the tunnel construction area, such as groundwater, the tunnel may be affected by water leakage, which will damage the structure of the tunnel. safety impact. At present, most of the prevention and control of leakage is based on the three-dimensional finite element analysis of the tunnel structure, and the leakage area is reinforced by bonding steel, glue pouring technology, and semi-analytical finite element calculation of the steel plate external pressure instability technology. Reinforcement trapping. However, the eff...

Claims

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Application Information

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IPC IPC(8): E21D11/15E21D11/38E21D21/00
Inventor 张涛毛羽张玉伟左厉邵立群
Owner STATE GRID XINYUAN
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