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Grouting construction treatment method

A treatment method and grouting technology, which are used in earth-moving drilling, wellbore lining, tunnel lining, etc., can solve the problems of the grouting pressure not meeting the design requirements, the small diffusion range of the slurry, and the poor grouting effect. The diffusion range is large, the grouting effect is good, and the effect of improving the effect

Active Publication Date: 2020-05-08
ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) The sealing effect of the traditional grouting construction method is not good, and it is easy to leak grout
[0008] (2) The grouting pressure of the traditional grouting construction method cannot meet the design requirements, the grouting range is small, and the grouting effect is not good

Method used

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Effect test

Embodiment 1

[0094] 1. Grouting parameters:

[0095] 1. Slurry diffusion radius: R=500mm for deep hole grouting;

[0096] 2. Grouting pressure: The initial pressure for deep hole grouting is 0.3-0.75MPa, and the final pressure is 1.0MPa. Under the final pressure state, when the grouting volume per minute is less than 3L or the grouting pressure gradually increases under the final pressure state Grouting can be stopped;

[0097] 3. Grouting slurry: the grouting material is cement-water glass slurry, and the setting time of the slurry is within 1 to 2 minutes;

[0098] Second, the grout wall construction:

[0099] 1. The initial section of grouting adopts the existing structure as the grouting wall.

[0100] 2. After the construction in the tunnel, temporary sealing shall be carried out. The sealing form is the same as the permanent sealing of the tunnel, and the thickness of the sealing shall not be less than 500mm.

[0101] Three, lead hole construction:

[0102] The grouting hole is ...

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Abstract

The invention belongs to the technical field of building, and discloses a grouting construction treatment method. The grouting construction treatment method comprises the following steps: determininggrouting parameters according to a practical condition, wherein a slurry diffusion radius R for deep-hole grouting is equal to 500 mm, initial grouting pressure for deep-hole grouting is 0.3-0.75 MPa,final pressure is 1.0 MPa, and grouting can be stopped while slurry inlet amount per minute is smaller than 3 L under a final pressure state or grouting pressure gradually increases under the final pressure state, and binary slurry is grouted as a grouting material, and the slurry setting time is within 1-2 minutes; adopting an existing structure as a wall for grouting, and performing construction treatment on the wall for grouting; drilling grouting holes by a ZLJ-2500 drilling machine, adopting a phi42 hollow drill stem to perform drilling construction, and performing grouting construction.The grouting construction treatment method disclosed by the invention is simple in process, is convenient to operate; and moreover, grouting pressure reaches design requirements, slurry diffusing range is great, the grouting effect is good, and a water and slurry leakage phenomenon is avoided.

Description

technical field [0001] The invention belongs to the technical field of construction, and in particular relates to a grouting construction treatment method. Background technique [0002] At present, the existing technology commonly used in the industry is as follows: grouting the rock and soil layer adjacent to the tunnel structure through the grouting pipe pre-buried in the tunnel box culvert structure or basement structural wall, plate or shield tunnel segment. After the grouting pipe, the unsolidified grout or groundwater outside the tunnel or basement will enter the tunnel along with the open pre-embedded grouting pipe, causing grout leakage and water seepage on the inner wall of the structure. Therefore measures should be taken to block. [0003] In order to solve the above problems, there are related technical patents, as follows: [0004] There is a patent for a grouting occluder and its plugging method (201910474102.X), which discloses a grouting occluder, which inc...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D11/38C04B28/26C04B111/70
CPCC04B28/26C04B2111/00724C04B2111/70E21D11/10E21D11/38C04B7/02C04B22/002
Inventor 王伟东张绍宽孙善辉张昆黄巍顾学建刘志权李伟杰张忠杰管蕾杨韦一吴孔勇赵洪彬张燕影曹晓飞段赛张志康陈希袁基林高长伟
Owner ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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