Pressure hydro consolidation method of airtight vacuum membrane for loess foundation in collapsibility

A technology of collapsible loess and vacuum membrane, applied in infrastructure engineering, soil protection, construction, etc., can solve the problems of low reliability, low reliability, limited compaction effect, etc. Low cost of implementation and the effect of eliminating collapsibility

Inactive Publication Date: 2006-12-06
CHINA SIXTH METALLURGICAL CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have their own limitations, some methods are uneconomical, and some methods are not even reliable
For example, the soil cushion or lime soil cushion replacement method is only applicable to the situation when there will be no regional groundwater level rise and the building load is not large; The cracks and water seepage caused by the destruction of the structure are very serious, and the reliability is very low; the reinforced concrete pile method is very economical, and it is not suitable for dealing with foundations with thick loess coverage

Method used

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Examples

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Embodiment Construction

[0012] Example. Consolidation method of closed vacuum membrane pressure water for collapsible loess foundation. Before implementing this method, it should be determined whether the site belongs to collapsible soil. If it belongs to collapsible soil, it shall be treated according to this method. The judgment method is to measure the collapsibility coefficient of the soil samples of the proposed site through experiments. If the coefficient is greater than 0.015, it belongs to collapsible soil quality.

[0013] During specific implementation, consolidate according to the following steps;

[0014] a. Arrange soaking holes in the site. The diameter of the soaking holes is 250 mm, the hole distance is 1.5 meters, and the depth of the holes is determined according to the cover depth of the collapsible soil layer and the depth to be treated;

[0015] b. Put water into the immersion hole in the field, subject to the water can submerge the immersion hole;

[0016] c. Cover the site ...

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Abstract

A method for consolidating collapsible loess foundation includes laying out water-submerging holes on construction job site, sealing site by seal diaphragm and vacuuming sealed site to let soil be consolidated after is water fully injected in said holes.

Description

technical field [0001] The invention relates to a soil consolidation method, in particular to a closed vacuum membrane pressure water consolidation method for collapsible loess foundations. Background technique [0002] my country's loess covers a vast area, and many areas belong to collapsible loess. Engineering construction in collapsible loess areas, if the foundation is not handled properly, it is very easy to cause engineering accidents. Traditional treatment methods generally include soil cushion or lime-soil cushion replacement method, lime-soil or clay compaction pile method, reinforced concrete pile method, etc. These methods have their own limitations, some methods are uneconomical, and some methods are not even reliable. For example, the soil cushion or lime soil cushion replacement method is only applicable to the situation when there will be no regional groundwater level rise and the building load is not large; The cracks and water seepage caused by the damag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
Inventor 常建华
Owner CHINA SIXTH METALLURGICAL CONSTR
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