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Concrete with-mold backfill grouting system and grouting method for vault of tunnel

A grouting system and concrete technology, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems of high investment in equipment, long construction period, backfilling and grouting in empty areas, etc. The effect of good connection performance and excellent self-leveling performance

Pending Publication Date: 2018-07-24
CHINA RAILWAY 19TH BUREAU GRP 3RD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a tunnel vault concrete belt-form backfill grouting system and a grouting method thereof, which solves the technical problems of large investment in equipment, long construction period and incomplete backfill grouting in the void area existing in the existing backfill grouting method

Method used

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  • Concrete with-mold backfill grouting system and grouting method for vault of tunnel
  • Concrete with-mold backfill grouting system and grouting method for vault of tunnel

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Embodiment Construction

[0018] The present invention is described in detail below in conjunction with accompanying drawing:

[0019] A tunnel vault concrete belt mold backfill grouting system, comprising a primary lining 4, a waterproof layer 5 is arranged in the primary lining 4, a secondary lining trolley 6 is arranged directly below the primary lining 4, and a secondary lining platform A secondary lining concrete 9 is poured between the vault of the vehicle 6 and the waterproof layer 5, and a cavity 11 is provided between the secondary lining concrete 9 above the vault of the secondary lining trolley 6 and the waterproof layer 5. A backfill grouting port 7 is provided on the vault of the lining trolley 6, and a flange 8 is provided on the backfill grouting port 7, and the end of the backfill grouting pipe 1 is inserted into the backfill grouting port 7 through the flange 8 Among them, the port of the backfilling grouting pipe 1 is attached to the waterproof layer 5 of the primary lining, and a cro...

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Abstract

The invention discloses concrete with-mold backfill grouting system and grouting method for a vault of a tunnel. The problems which exist in an existing backfill grouting way and that a device is manyin investment, the construction period is long and the backfill grouting of a disengagement area is incompact are solved. A vault of a secondary lining trolley (6) is provided with a backfill grouting opening (7); the end of a backfill grouting pipe (1) passages through a ring flange (8) and then is inserted into the backfill grouting opening; a port of the backfill grouting pipe is top-stuck ona primarily lined waterproof layer (5); a polytetrafluoroethylene tape is wound on the outer side of a crisscross grouting groove (3); a polytetrafluoroethylene tape is stuck on a pipe orifice of thebackfill grouting pipe; a pressure sensor (13) is arranged in a pipe orifice of the lower end of the backfill grouting pipe; the pipe orifice of the lower end of the backfill grouting pipe is connected with a connecting sleeve; (16); the lower end of the connecting sleeve is connected with a grout delivery pipe (18) and a grouting pump; backfill grouting grout is arranged in the grouting pump. thedefect of a cavity in a secondarily lined vault is eliminated to the maximum extent.

Description

technical field [0001] The invention relates to a tunnel secondary lining concrete backfilling grouting system, in particular to a secondary lining concrete pouring and backfilling grouting system and a grouting method for one-time completion. Background technique [0002] In tunnel construction, after the surrounding rock is excavated, the supporting steel frame is installed on the surrounding rock interface of the section first, and then the concrete is sprayed to form a primary lining. When the primary lining reaches the standard strength, the waterproof board construction is carried out. After the waterproof board construction is completed , drive the secondary lining trolley into place. The vault of the secondary lining trolley is generally provided with a concrete pouring port and a backfill grouting port. Generally, there are two concrete pouring ports, which are respectively arranged at the front end and the rear end of the trolley vault. After the secondary lining ...

Claims

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Application Information

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IPC IPC(8): E21D11/10
CPCE21D11/10E21D11/105
Inventor 赵立财
Owner CHINA RAILWAY 19TH BUREAU GRP 3RD
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