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Slurry injection technique of double-valve sleeve valve tube of double-layer cloth bag

A sleeve valve pipe grouting and sleeve valve pipe technology, which is applied in construction, sheet pile walls, foundation structure engineering, etc., can solve the problems of long construction period and achieve the effects of shortening construction time, saving costs, and reducing the effect of soil extrusion

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

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Problems solved by technology

In addition, conventional sleeve valve pipe grouting needs to pour casing material, and wait for the casing material to solidify and increase in strength, and the construction period is longer

Method used

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  • Slurry injection technique of double-valve sleeve valve tube of double-layer cloth bag
  • Slurry injection technique of double-valve sleeve valve tube of double-layer cloth bag
  • Slurry injection technique of double-valve sleeve valve tube of double-layer cloth bag

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Experimental program
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Effect test

Embodiment 1

[0023] according to figure 1 As shown, use the integral plastic drainage board to make the drainage belt, the drainage width is about 3cm, and use the plastic pipe whose inner diameter is slightly larger than the outer diameter of the sleeve valve pipe and whose wall thickness is not less than the thickness of the drainage board to make the sleeve. The length of the sleeve is 20cm, and it is cut along the longitudinal direction A longitudinal groove about 1mm wider than the plastic drain. Fix the sleeve on the sleeve valve tube with glue, etc., the distance between the sleeves is 1.5-2m, and the longitudinal grooves of each sleeve should be in a straight line. Embed and fix the drainage belt in the longitudinal groove of the sleeve, fix the drainage belt with sealant and level the longitudinal groove of the sleeve, make a bag equal to the length of the sleeve valve tube, the volume of the bag is 0.6 to 0.9 times the grouting volume, the bag is divided into There are two inner...

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Abstract

The invention relates to a slurry injection technique of a double-valve sleeve valve tube of a double-layer cloth bag. For overcoming the defect of the slurry injection technique for a sleeve valve tube, the double-layer cloth bag made of PVC film and geotextile is sleeved on the sleeve valve tube and is firmly bound on the sleeve valve tube at the interval of 1.5-2 m by plastic buckles, and the plastic buckles are automatically opened under a certain pressure for forming a double-valve tube. The technique is directly used for injecting slurry, does not need sleeve shell material, is not easyto leak slurry, does not increase the water content of foundation soil, is easy to form a column body and has high construction efficiency. Meanwhile, a plastic drainage band is fixed on the outer wall of the sleeve valve tube by a sleeve barrel, thereby eliminating partial water in slurry liquid and reducing the soil squeezing effect.

Description

technical field [0001] The invention relates to a soft soil foundation grouting reinforcement technology, in particular to a double-valve double-bag grouting technology, which is innovated on the basis of the sleeve valve pipe grouting technology and belongs to the technical field of foundation and foundation engineering. Background technique [0002] The conventional sleeve valve pipe grouting technology construction process is: drilling → pouring casing material → inserting sleeve valve pipe → segmental grouting after the casing material reaches the specified strength. [0003] A large number of engineering practices have shown that the grout diffusion range of sleeve valve pipe grouting is difficult to control, usually cannot form a continuous pile body, and is prone to grout leakage. The grout injected into the foundation not only generates excess static pore water pressure in the foundation, but also increases the water content of the foundation soil. The soil squeezing...

Claims

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Application Information

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IPC IPC(8): E02D5/46
Inventor 黄腾彭志军谭祥韶
Owner CRCC HARBOR & CHANNEL ENG BUREAU GRP
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