Clogging prevention composite geotextile

A technology of composite geotextile and geotextile, which is applied in the field of civil engineering to achieve the effects of small volume, high soil retention rate and low cost

Inactive Publication Date: 2015-06-03
青海富腾生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the negative impact is that the soil retention rate is significantly reduced to 60%; 2. Sand filter layers with different particle sizes are used
Disadvantages are high cost, long construction period, large floor area, and unstable anti-silting effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 4, an anti-silting composite geotextile, its structure is: a large-aperture geotextile and a small-aperture geotextile are superimposed and composited, and the effective aperture of the large-aperture geotextile is greater than or equal to the diameter of the soil particle 1.8 times, the effective aperture of the small-aperture geotextile is greater than or equal to 0.4 times the diameter of soil particles, and the soil retention rate can reach more than 97%.

Embodiment 2

[0013] Embodiment 5, an anti-silting composite geotextile, its structure is: a large-aperture geotextile and a small-aperture geotextile are superimposed and composited, and the effective aperture of the large-aperture geotextile is greater than or equal to the diameter of the soil particle 1.9 times, the effective aperture of the small-aperture geotextile is greater than or equal to 0.5 times the diameter of soil particles, and the soil retention rate can reach more than 96%.

Embodiment 3

[0014] Embodiment 6, an anti-silting composite geotextile, its structure is: a large-aperture geotextile and a small-aperture geotextile are superimposed and composited, and the effective aperture of the large-aperture geotextile is greater than or equal to the diameter of the soil particle 2 times, the effective aperture of the small-aperture geotextile is greater than or equal to 0.6 times the diameter of the soil particles, and the soil retention rate can reach more than 97%.

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PUM

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Abstract

The invention discloses clogging prevention composite geotextile and relates to the field of civil engineering. The clogging prevention composite geotextile is characterized by being composited of overlapping of a large-aperture geotextile body, a middle-aperture geotextile body and small-aperture geotextile body or composed of overlapping of the large-aperture geotextile body and the small-aperture geotextile body. The clogging prevention composite geotextile has the advantages that possibility of clogging is effectively reduced by overlapping of two layers or three layers of geotextile bodies of different apertures, reverse-filter effect is enhanced, piping never occurs, and soil conservation rate is high and can reach above 95%. The clogging preservation composite geotextile is low in cost, short in construction period and small in size.

Description

1. Technical field [0001] The invention relates to the field of civil engineering, in particular to an anti-silting composite geotextile. 2. Background technology [0002] Soil protection by reverse filtration is an important topic in water conservancy projects, but the improvement of soil protection efficiency also increases the possibility of clogging, and may even cause filter failure, resulting in embankment burst or piping. In order to prevent clogging, there are currently two main methods used in the filter soil protection project: 1. Increase the effective aperture of the filter geotextile. Generally, the effective pore size of the filter geotextile is greater than or equal to twice the diameter of the soil particle. However, the negative impact is that the soil retention rate is significantly reduced to 60%; 2. Sand filter layers with different particle sizes are used. The disadvantages are high cost, long construction period, large floor area, and unstable anti-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/00E02D3/10
CPCE02D3/005E02D2300/009
Inventor 邓洪
Owner 青海富腾生态科技有限公司
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