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Full-hole one-time rapid grouting construction method

A construction method and grouting technology, which are used in earth-moving drilling, shaft equipment, wellbore lining, etc., can solve the problems of inappropriate operation, time-consuming grouting cycle, poor sealing of grouting wall, etc. Ideal effect, reduced thickness effect

Active Publication Date: 2018-03-06
CHINA RAILWAY 18TH BUREAU GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Whether it is the forward type or the backward type, the grout cannot be spread evenly, and the number of holes is large. The grout-stop wall is made of molded concrete, which is thick and unsuitable for operation. The entire grouting cycle takes a long time, and the sealability of the grout-stop wall is poor. It is not easy to chisel off in the later stage, the adjustable range of grout setting time is small, the grouting effect has certain limitations, and the surface uplift value is relatively large during the grouting process

Method used

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  • Full-hole one-time rapid grouting construction method

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Embodiment 1

[0052] The research and development is based on the curtain grouting construction of ultra-shallow buried tunnels passing through urban main roads under the condition of water-rich and weak surrounding rock near the sea;

[0053] A tunnel passes through an urban traffic artery and is close to the viaduct pier. The surface traffic flow is large and the pipelines are dense. There are more than 20 pipelines in 6 categories, and there are some unknown pipelines;

[0054] The burial depth of this lower penetration section is shallow (5.4-14.3m), and the strata in the vault area are mainly miscellaneous fill, silt, residual soil, fully weathered granite, and it is connected with sea water, so the self-stabilizing ability is poor, and the maximum daily water inflow is 1700m. 3 , the entire tunnel is below the constant water level;

[0055] The whole grouting process is as follows:

[0056] ① Hole layout: The excavation section is 58.99 square meters, and the upper half section is gr...

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Abstract

The invention discloses a full-hole one-time rapid grouting construction method. The full-hole one-time rapid grouting construction method comprises the processes of hole distribution, manufacturing of a grouting pipe, material compounding, grouting and the like. Full-hole one-time grouting is achieved, the full-hole one-time rapid grouting construction method is suitable for textures of backfillsoil, muddy soil, a riprap layer, a sand layer, a full-differentiation layer and a strong-differentiation layer, and the grouting effect is good.

Description

technical field [0001] The invention relates to a one-time rapid grouting construction method for a full hole. Background technique [0002] Grouting technology has been widely used in the field of tunnel construction in my country, especially in over-weathering troughs, broken zones, water-rich and weak surrounding rock grouting to block water, and strengthen strata; the types include full-section, half-section, peripheral and local curtain injection Grouting, single-hole grouting, etc.; the main grouting methods are forward and backward, and the grouting wall is made of formwork concrete, with a thickness of more than 2m; the form of hole layout is full-section, upper half-section, full-section, peripheral or local Curtain grouting holes, the whole grouting cycle is long, and the grouting effect also has certain limitations. The effect of hole grouting is worthy of our further in-depth study and experiment. [0003] The traditional grouting technology is mainly based on dou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
CPCE21D11/105
Inventor 高海东史鹏飞范旭阳郭彦兵赵涛郑涛孟妍
Owner CHINA RAILWAY 18TH BUREAU GRP CO LTD
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