Construction method of reserved grouting pipe of tunnel vault

A construction method and technology of grouting pipe
CN104895585AInactive Publication Date: 2015-09-09CHINA RAILWAY 21ST BUREAU GROUP THE FOURTH ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA RAILWAY 21ST BUREAU GROUP THE FOURTH ENG
Publication Date
2015-09-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a construction method of a reserved grouting pipe of a tunnel vault. According to the technical scheme, the construction method comprises arranging waterproof fabrics on the primary supporting surface of a tunnel and binding secondary lining rebars; arranging a corrugated pipe with a hole in close attachment with the waterproof fabrics and enabling the corrugated pipe with the hole to penetrate a rubber bar; pouring secondary lining concrete and timely drawing the rubber bar at two ends; drawing out the rubber bar after initial setting is achieved and forming a secondary lining concrete vault grouting hole channel; grouting a reserved hole channel and enabling a vault cavity to be filled with grout after the grout passes through the small hole of the corrugated pipe with the hole. According to the construction method of the reserved grouting pipe of the tunnel vault, the grouting hole channel is reserved during tunnel construction and accordingly the grouting on the secondary concrete vault cavity can be rapidly achieved, the process of vault drilling after radar detection is omitted, the construction time is saved, the construction cost is reduced, and the construction quality of the tunnel concrete is ensured.
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Description

technical field

[0001] The invention relates to a construction method of a grouting pipe for a tunnel, in particular to a construction method for a grouting pipe reserved for a tunnel vault, and belongs to the field of road and bridge construction. Background technique

[0002] In tunnel construction, ground radar inspection must be carried out after the construction of lining concrete is completed, and one of the inspection items is voids and cavities behind the lining concrete. According to the test results of many tunnels in the past, voids and cavities generally have the highest probability of appearing in the vault, and the most voids and cavities are detected. Drill holes in the cavity, and then connect the grouting pipe for grouting, and each hole needs to drill two holes, one grouting hole and one grouting hole, which takes a long time and a lot of work, because the void And the cavity mostly occurs in the vault, so the main drilling and grouting work is also concen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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