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Pulse type grouting machine and double-liquid grouting construction method

A construction method and double-liquid grouting technology, which can be used in infrastructure engineering, roads, tracks, etc., and can solve problems such as low strength, poor underwater dispersion resistance, and slow coagulation speed.

Pending Publication Date: 2020-09-29
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a double-liquid grouting construction method, the grouting is dense and has no dead angle, the grouting effect is good, and the mixing efficiency and uniformity are improved, and the construction will not be affected by the blockage caused by the excessive condensation speed. ; Moreover, using the designed A and B components, the working time of the mixed slurry can be adjusted, which not only solves the problems of slow coagulation speed, low strength, and poor underwater dispersion resistance, but also does not cause pipe blockage due to excessive coagulation speed affect the construction

Method used

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  • Pulse type grouting machine and double-liquid grouting construction method
  • Pulse type grouting machine and double-liquid grouting construction method
  • Pulse type grouting machine and double-liquid grouting construction method

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Embodiment 1

[0087] A pulse type grouting machine, the pulse type grouting machine according to the present invention, includes a plurality of storage tanks 2, each storage tank 2 is respectively provided with a pressure device 1, and each storage tank 2 is respectively connected to one end of the mixing pipe 7 , a vibrator 8 is set on the mixing tube 7, the vibrator (8) is connected with the motor frequency regulator 9, a flow control valve 3 is respectively set between each storage tank 2 and the mixing tube 7, and the other end of the mixing tube 7 is grouted with the mixed slurry Tube 10 communicates.

[0088] Each storage tank 2 communicates with one end of the mixing tube 7 through a pipeline 4 , and the single liquid enters the mixing tube 7 from the storage tank 2 through the pipeline 4 .

[0089] The pressure device 1 and the flow control valve 3 are respectively connected with the control part 5 .

[0090] The mixed slurry grouting pipe 10 is connected to the grouting gun head 6...

Embodiment 2

[0100] A double liquid grouting construction method, comprising the following steps:

[0101] S1. After determining the grouting filling area where the foundation is voided, locate the borehole and clean it. The borehole is determined by the elastic wave radar after the void area and its depth of the foundation, according to the size of the area, according to the size of the area, the plum blossom pile type positioning borehole is carried out according to a certain density, and the hole is cleared with a high-pressure water gun, so that each grouting hole and The void area is connected. The diameter of the grouting hole is 25-35mm, and the hole density is 8-12 pcs / m 2 , the hole spacing is 0.30-0.35m, and the drilling depth should be such that the grouting hole is connected to the void area; the plum blossom pile type grouting holes connected to the void area are set for grouting. Compared with single-row hole grouting, it can The slurry is evenly distributed in the cavity l...

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Abstract

The invention provides a pulse type grouting machine and a double-liquid grouting construction method. The quincuncial pile type is adopted to arrange grouting holes; grouting is carried out on one point of a central area; grouting is dense without a dead angle, the grouting effect is excellent, the grouting pressure is low, and the grouting efficiency is high; and a cabin is unlikely to be blocked on the condition that the condensation rate of mixed slurry is higher. High and low pressure peak load shifting grouting of the pulse type grouting machine is used to realize premixing; secondary mixing in a mixing pipe and third-time in-depth mixing of a vibrator are realized; the grouting speed is controllable; and on the condition that the slurry is excellent in underwater dispersity resistance and high in cohesiveness, the mixing efficiency and the uniform degree are improved. A A-component single fluid and a B-component signal fluid are designed; the single fluid components can work fora long time; when the double fluid is mixed, the underwater dispersity resistance is high, the condensation and hardening rate is high, and the underwater rapid repairing demand of a railway tunnel foundation disengaging area is met; double-liquid grouting does not affect construction due to pipe blocking caused by excessively high condensation rate. The proportion of the component A and the component B can be controlled to adjust the working time of the mixed slurry.

Description

technical field [0001] The invention belongs to the field of underwater grouting repair and quick repair engineering in the empty area of ​​the track bed of a railway tunnel, and in particular relates to a pulse type grouting machine, a double-liquid grouting construction method, especially a quick-setting adjustable cement-based water The construction method of anti-dispersion rapid hardening grouting material. Background technique [0002] The working conditions faced by the rapid repair project are extremely complicated, and many of them involve underwater grouting repairs, such as the repair of the void of the railway tunnel track bed, the reinforcement of underwater pier columns, and the grouting of underground water-stop curtains. Taking the underwater repair project in the hollow area of ​​the railway tunnel track bed as an example, the existing grouting repair technology is mainly divided into two categories according to the material: organic polymer grouting technol...

Claims

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Application Information

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IPC IPC(8): E02D15/06E01B1/00
CPCE01B1/002E02D15/06
Inventor 郭小雄赵鹏马伟斌王志伟付兵先邹文浩常凯马超锋安哲立徐湉源李尧柴金飞许学良
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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