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Drip-irrigation maintenance method for shield work shaft lining wall

A technology for lining walls and working wells, applied in shaft lining, tunnel lining, shaft equipment, etc., can solve the problems of poor maintenance effect, reduce formwork turnover time, affect moisture retention effect, etc., achieve less possibility of damage, avoid concrete Excessive temperature, avoiding the effect of interruption of wall maintenance

Inactive Publication Date: 2019-11-22
CCCC FIRST HARBOR ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conservation with mold will reduce the turnaround time of formwork and increase the project cost to a large extent; watering maintenance needs continuous watering to keep the concrete in a wet state, and construction in dry areas and high temperature weather will cause a lot of waste of water resources; curing with curing agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] A drip irrigation maintenance method for a lining wall of a shield working well, specifically comprising the following steps:

[0033] 1) Transport the maintenance tools (maintenance buckets, PVC water pipes, plastic films, geotextiles, wooden strips) to the site; fill the maintenance buckets with water for maintenance;

[0034] 2) After the lining wall is poured, remove the formwork, use the M16 nut embedded on the top of the wall to install the screw, the screw length is ≥ 10cm, the spacing is not more than 1.5m, and then install (horizontally) 5cm × 5cm wood on the upper part of the screw;

[0035] 3) Open the PVC hose according to the spacing of 30cm, the aperture is 2mm, and the aperture size is appropriately adjusted according to the water pressure in the pipe, that is, when the height difference between the maintenance bucket and the maintenance wall is large, the aperture should be appropriately reduced; The pipe is hung under the screw, so t...

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Abstract

The invention discloses a drip-irrigation maintenance method for a shield work shaft lining wall. The drip-irrigation maintenance method comprises the following steps: (1) water for maintenance is prepared; (2) screw rods and battens are mounted on the lining wall; (3) a maintenance water pipe is hung, one end of the maintenance water pipe is connected with the water for maintenance, a maintenancevalve is opened, the surface of concrete is wetted, a maintenance thin film is hung on the battens, and a geotechnical cloth is hung on the outer side of the maintenance thin film; and (4) the wall surface geotechnical cloth is fixed and tightly attached to the wall surface. According to the drip-irrigation maintenance method for the shield work shaft lining wall, compared with traditional maintenance modes such as watering and spraying, the continuity and heat-preservation and moisturizing effects of wall body maintenance can be ensured, manpower is further saved, the using amount of the maintenance water is decreased, and the drip-irrigation maintenance method has the advantages that the method is simple and convenient, operation is easy and convenient, dismounting and mounting are easy, recycling can be realized, the cost is saved, the environment is protected, and the concrete maintenance effect is improved.

Description

technical field [0001] The invention relates to a drip irrigation maintenance method for the lining wall of a shield working well, and belongs to the technical field of highway construction. Background technique [0002] Inadequate early maintenance of the lining wall will cause dehydration on the surface of the structure or excessive cooling rate, which will have an adverse effect on the concrete structure. Since the wall is a vertical structure and the surface cannot store water, it is difficult to guarantee the quality of maintenance with conventional maintenance. On the one hand, the surface of the concrete wall loses water too quickly; on the other hand, the conventional maintenance causes the concrete to cool down faster, resulting in cracks in the concrete structure generation. Conventional methods are generally mold curing, watering curing, brushing curing agent curing, simple pasting film curing. Conservation with mold will reduce the turnaround time of formwork a...

Claims

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Application Information

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IPC IPC(8): E21D11/00E21D11/10
CPCE21D11/003E21D11/10E21D11/102
Inventor 夏国光卢海超
Owner CCCC FIRST HARBOR ENG
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