A double-hole double-fluid grouting method

A double-liquid grouting and grouting technology, which is applied in construction, infrastructure engineering, soil protection, etc., can solve the problems of short mixing time, affecting strength, and lack of strength, so as to increase the expansion area, improve the degree of fastening, and improve The effect of firmness

Active Publication Date: 2020-04-21
化学工业第一勘察设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) In the existing grouting technical scheme, there is insufficient mixing of the two grouting fluids, and the mixing time is short, thereby affecting the strength after mixing;
[0005] (2) In the process of grouting, it is often difficult to pull out the tube due to the backflow of the grout;
[0006] (3) In the existing grouting process, there is a lack of corresponding perforating devices, so that the grouting fluid cannot enter deeper formations, and further, the actual control area of ​​the grouting fluid is small, which is very important for improving the formation It is very disadvantageous in terms of firmness

Method used

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  • A double-hole double-fluid grouting method
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  • A double-hole double-fluid grouting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, the present invention provides a kind of two-hole two-fluid grouting method, comprises the steps:

[0035] S100. Drilling and pretreatment: Drilling the stratum that needs grouting through the drilling device, performing cementing treatment on the surface of the drilled hole after the drilling is completed, and performing secondary treatment on the surface of the drilled hole on the basis of the cementing. For secondary reinforcement, the depth of cementing is not less than 10m, and the extended length of solidification on the surface is 3m with the center of the borehole as the center;

[0036] S200. Install the grouting locking plate, drill the installation hole on the above-mentioned reinforced foundation, and install the grouting locking plate on the opening of the drilled hole by nailing the pile, and directly socket the two grouting locking plates grouting mounting hoop;

[0037] S300, double hole double liquid installation, install th...

Embodiment 2

[0045] Such as figure 1 As shown, the present invention provides a kind of two-hole two-fluid grouting method, comprises the steps:

[0046] S100. Drilling and pretreatment: Drilling the stratum that needs grouting through the drilling device, performing cementing treatment on the surface of the drilled hole after the drilling is completed, and performing secondary treatment on the surface of the drilled hole on the basis of the cementing. For secondary reinforcement, the depth of cementing shall not be less than 10m, and the extension length of solidification on the surface shall be 3.5m in radius with the borehole as the center;

[0047] S200. Install the grouting locking plate, drill the installation hole on the above-mentioned reinforced foundation, and install the grouting locking plate on the opening of the drilled hole by nailing the pile, and directly socket the two grouting locking plates grouting mounting hoop;

[0048] S300, double hole double liquid installation,...

Embodiment 3

[0056] Such as figure 1 As shown, the present invention provides a kind of two-hole two-fluid grouting method, comprises the steps:

[0057] S100. Drilling and pretreatment: Drilling the stratum that needs grouting through the drilling device, performing cementing treatment on the surface of the drilled hole after the drilling is completed, and performing secondary treatment on the surface of the drilled hole on the basis of the cementing. For secondary reinforcement, the depth of cementing is not less than 10m, and the extended length of solidification on the surface is 4m in radius with the borehole as the center;

[0058] S200. Install the grouting locking plate, drill the installation hole on the above-mentioned reinforced foundation, and install the grouting locking plate on the opening of the drilled hole by nailing the pile, and directly socket the two grouting locking plates grouting mounting hoop;

[0059] S300, double hole double liquid installation, install the fi...

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Abstract

The invention discloses a double-hole double-liquid grouting method. The double-hole double-liquid grouting method comprises the steps that a stratum requiring to be grouted is drilled through a drilling device and is reinforced; mounting holes are drilled in a reinforced foundation; grouting locking flitch plates and a grouting mounting hoop are mounted; a first grouting pipe, an exhaust pipe anda second grouting pipe are mounted through injection holes in the grouting mounting hoop; perforation and jetting are carried out through jetting devices mounted in the first grouting pipe and the second grouting pipe, and then, high-pressure grouting liquid connecting sleeves are connected with high-pressure grouting liquids; and the grouting pipes are lifted upwards, and the grouting process isrepeated till all grouting operation is completely achieved. According to the double-hole double-liquid grouting method, sufficient grouting pressure is provided, the grouting liquids of various types are uniformly mixed, pipe pulling is simple, the practical expansion area of the grouting liquids is increased, the fastening degree of the stratum after grouting is improved, grouting of various types can be carried out according to different stratum requirements, and different grouting curing requirements are met.

Description

technical field [0001] The invention relates to the technical field of grouting, in particular to a double-hole double-liquid grouting method. Background technique [0002] The double-liquid grouting method is aimed at improving the soil. On the one hand, it can increase the strength of the soil, and on the other hand, it can achieve the effect of water and leakage plugging. This construction method has become an indispensable construction method for foundation treatment and has been widely used. Its main principle is to use pressure to inject solidifiable slurry into the formation, and through the solidification of the slurry to form a cemented body or a slurry cemented body cemented with the formation, so as to achieve the purpose of strengthening geological stability. In the existing grouting device, for various complex formations, various types of double-liquid grouting materials need to be injected according to the actual situation of the project, so a variety of doubl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12
CPCE02D3/12
Inventor 鲁文东何林尹则刘胜军
Owner 化学工业第一勘察设计院有限公司
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