Slurry injection technique of sleeve valve tube of cloth bag

A sleeve valve pipe grouting and sleeve valve pipe technology, which is applied in the direction of soil protection, sheet pile walls, construction, etc., can solve the problems affecting the construction quality, reduce the effect of soil squeezing, avoid grouting, and increase the strength of foundation soil Effect

Active Publication Date: 2010-02-10
CRCC HARBOR & CHANNEL ENG BUREAU GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The embankment retaining wall was displaced by 18-21cm during the grouting of the foundation sleeve valve pipe under the side slope of another embankment, and the rapid flow groove on the slope surface was broken into 3-4 sections, with a maximum crack of 3cm, which affected the construction quality

Method used

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  • Slurry injection technique of sleeve valve tube of cloth bag
  • Slurry injection technique of sleeve valve tube of cloth bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 The schematic diagram of the sleeve valve pipe shown in the figure is to make a cloth bag sleeve valve pipe. Use geological drilling rigs and other equipment to drill a hole with a diameter of not less than 10cm, and insert the sleeve valve pipe installed with a cloth bag and a plastic drainage board into the drill hole. The cloth bag can be made of geotextile. Wait for production, fix 1 to 2 plastic drainage boards along the depth direction on the outside of the cloth bag, and temporarily fix the cloth bag and plastic drainage boards on the sleeve valve pipe every 0.5m with adhesive tape; and take measures to prevent the cloth bags and plastic drainage boards from sinking into the holes Inside; pour the casing material into the cloth bag, pour the casing material from the bottom of the hole upwards, and use the iron wire to close the bag opening after the pure casing material flows out from the hole, and continue to pour the casing material to make the ...

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PUM

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Abstract

The invention relates to a slurry injection technique of a sleeve valve tube of a cloth bag, which is developed on the basis of a regular slurry injection technique for the sleeve valve tube and has the characteristics that the cloth bag having the same length as the sleeve valve tube is sleeved on the sleeve valve tube; one to two plastic drainage plates are fixed outside the cloth bag in the depth direction; sleeve shell material is injected into the cloth bag after the sleeve valve tube with the cloth bag and the plastic drainage plates is inserted into drilling holes and then constructingis carried out according to a regular slurry injection method of the sleeve valve tube. The technique can avoid slurry leaking and flowing phenomena and is beneficial to forming a column body. The plastic drainage plates are arranged, thereby quickly discharging partial water in slurry liquid, dissipating the super-static pore water pressure of injection slurry in a foundation, effectively reducing the soil squeezing effect and increasing the foundation soil strength.

Description

technical field [0001] The invention relates to a soft soil foundation reinforcement technology, in particular to a bag sleeve valve pipe grouting technology, which is a new technology improved on the basis of the conventional sleeve valve pipe grouting technology, and belongs to the technical field of foundation and foundation engineering construction . Background technique [0002] Sleeve valve pipe grouting technology, as a mature and advanced grouting process, is widely used in foundation pit curtain, foundation and dam reinforcement projects, and has a very broad application prospect; sleeve valve pipe grouting is the The sleeve valve type grouting pipe is lowered into the formation through the borehole, and the segmental grouting process is adopted to make the grout enter the formation more evenly under pressure conditions, so as to achieve the purpose of segmental controllable and uniform diffusion of the grout in the formation. The construction process of the sleeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D3/10
Inventor 刘吉福许发明王业荣李翔
Owner CRCC HARBOR & CHANNEL ENG BUREAU GRP
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