CN104674779A - Clogging prevention composite geotextile - Google Patents
Clogging prevention composite geotextile Download PDFInfo
- Publication number
- CN104674779A CN104674779A CN201510013630.7A CN201510013630A CN104674779A CN 104674779 A CN104674779 A CN 104674779A CN 201510013630 A CN201510013630 A CN 201510013630A CN 104674779 A CN104674779 A CN 104674779A
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- CN
- China
- Prior art keywords
- geotextiles
- aperture
- geotextile
- small
- particle diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0085—Geotextiles
- E02D2300/009—Geotextiles with multi-layer structure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
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
one, technical field
The present invention relates to field of civil engineering, particularly a kind of silting blocking composite earthwork cloth.
two, background technology
Anti-filter soil conservation is an important topic in hydraulic engineering, but soil conservation efficiency too increases the stifled possibility of what while improving, anti-filter even may be caused to lose efficacy, and generation is breached a dyke or the disastrous effect of piping.In order to prevent what from blocking up, current anti-filter soil conservation engineering mainly adopts two kinds of ways: the effective aperture 1, increasing anti-filter geotextiles.Usually the effective aperture of anti-filter geotextiles is made to be more than or equal to the twice of soil particle diameter.But the negative effect brought is soil conservation rate is obviously reduced to 60%; 2, the sandstone filtration beds of different-grain diameter is adopted.Shortcoming is that cost is high, the construction period is long, and floor space is large, and silting blocking effect is unstable.
three, summary of the invention
A kind of silting blocking composite earthwork cloth is the invention provides for the problems referred to above, its structure is: large aperture geotextiles, median pore radius geotextiles and small-bore geotextiles three layers of geotextiles superimposion form, the effective aperture of described large aperture geotextiles is more than or equal to 3 ~ 3.2 times of soil particle diameter, the effective aperture of described median pore radius geotextiles is more than or equal to 1.3 ~ 1.6 times of soil particle diameter, and the effective aperture of described small-bore geotextiles is more than or equal to 0.4 ~ 0.6 times of soil particle diameter.
A kind of silting blocking composite earthwork cloth, its structure is: large aperture geotextiles and the two-layer geotextiles superimposion of small-bore geotextiles form, the effective aperture of described large aperture geotextiles is more than or equal to 1.8 ~ 2 times of soil particle diameter, and the effective aperture of described small-bore geotextiles is more than or equal to 0.4 ~ 0.6 times of soil particle diameter.
The present invention uses like this: determine first as required to need to lay two-layer or three layers of geotextiles, as needs laying three layers of geotextiles, first large aperture geotextiles will be laid needing the place of filtering, then median pore radius geotextiles is laid, finally in laying small-bore geotextiles, finally at the strong sandy gravel of small-bore geotextile laying drainage, geotextiles is covered tightly real; As two-layer geotextiles laid by needs, needing the place of filtering first will lay large aperture geotextiles, then laying small-bore geotextiles, finally at the strong sandy gravel of small-bore geotextile laying drainage, geotextiles is being covered tightly reality.
Beneficial effect of the present invention is: the possibility that the geotextiles of different effective aperture is two-layer or three layers of geotextiles superposition minimizing what is stifled, and strengthen anti-filter effect, piping can not occur, soil conservation rate is high, can reach more than 95%; And cost is low, short construction period, volume is little.
Four, accompanying drawing explanation
Fig. 1 is the present invention three layers of geotextiles superimposion figure;
Fig. 2 is the present invention's two-layer geotextiles superimposion figure.
Detailed description of the invention
embodiment 1a kind of silting blocking composite earthwork cloth, its structure is: large aperture geotextiles, median pore radius geotextiles, geotextiles three layers of geotextiles superimposion in small-bore form, the effective aperture of described large aperture geotextiles is more than or equal to 3 times of soil particle diameter, the effective aperture of described median pore radius geotextiles is more than or equal to 1.3 times of soil particle diameter, and the effective aperture of described small-bore geotextiles is more than or equal to 0.4 times of soil particle diameter, and soil conservation rate can reach more than 98%.
embodiment 2a kind of silting blocking composite earthwork cloth, its structure is: large aperture geotextiles, median pore radius geotextiles, geotextiles three layers of geotextiles superimposion in small-bore form, the effective aperture of described large aperture geotextiles is more than or equal to 3.1 times of soil particle diameter, the effective aperture of described median pore radius geotextiles is more than or equal to 1.5 times of soil particle diameter, and the effective aperture of described small-bore geotextiles is more than or equal to 0.5 times of soil particle diameter, and soil conservation rate can reach more than 97%.
embodiment 3a kind of silting blocking composite earthwork cloth, its structure is: large aperture geotextiles, median pore radius geotextiles, geotextiles three layers of geotextiles superimposion in small-bore form, the effective aperture of described large aperture geotextiles is more than or equal to 3.2 times of soil particle diameter, the effective aperture of described median pore radius geotextiles is more than or equal to 1.6 times of soil particle diameter, and the effective aperture of described small-bore geotextiles is more than or equal to 0.6 times of soil particle diameter, and soil conservation rate can reach more than 95%.
embodiment 4a kind of silting blocking composite earthwork cloth, its structure is: large aperture geotextiles and the two-layer geotextiles superimposion of small-bore geotextiles form, the effective aperture of described large aperture geotextiles is more than or equal to 1.8 times of soil particle diameter, the effective aperture of described small-bore geotextiles is more than or equal to 0.4 times of soil particle diameter, and soil conservation rate can reach more than 97%.
embodiment 5a kind of silting blocking composite earthwork cloth, its structure is: large aperture geotextiles and the two-layer geotextiles superimposion of small-bore geotextiles form, the effective aperture of described large aperture geotextiles is more than or equal to 1.9 times of soil particle diameter, the effective aperture of described small-bore geotextiles is more than or equal to 0.5 times of soil particle diameter, and soil conservation rate can reach more than 96%.
embodiment 6a kind of silting blocking composite earthwork cloth, its structure is: large aperture geotextiles and the two-layer geotextiles superimposion of small-bore geotextiles form, the effective aperture of described large aperture geotextiles is more than or equal to 2 times of soil particle diameter, the effective aperture of described small-bore geotextiles is more than or equal to 0.6 times of soil particle diameter, and soil conservation rate can reach more than 97%.
Claims (2)
1. a silting blocking composite earthwork cloth, it is characterized in that: large aperture geotextiles, median pore radius geotextiles, geotextiles three layers of geotextiles superimposion in small-bore form, the effective aperture of described large aperture geotextiles is more than or equal to 3 ~ 3.2 times of soil particle diameter, the effective aperture of described median pore radius geotextiles is more than or equal to 1.3 ~ 1.6 times of soil particle diameter, and the effective aperture of described small-bore geotextiles is more than or equal to 0.4 ~ 0.6 times of soil particle diameter.
2. a silting blocking composite earthwork cloth, it is characterized in that: large aperture geotextiles and the two-layer geotextiles superimposion of small-bore geotextiles form, the effective aperture of described large aperture geotextiles is more than or equal to 1.8 ~ 2 times of soil particle diameter, and the effective aperture of described small-bore geotextiles is more than or equal to 0.4 ~ 0.6 times of soil particle diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013630.7A CN104674779A (en) | 2015-01-12 | 2015-01-12 | Clogging prevention composite geotextile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013630.7A CN104674779A (en) | 2015-01-12 | 2015-01-12 | Clogging prevention composite geotextile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104674779A true CN104674779A (en) | 2015-06-03 |
Family
ID=53310326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510013630.7A Pending CN104674779A (en) | 2015-01-12 | 2015-01-12 | Clogging prevention composite geotextile |
Country Status (1)
| Country | Link |
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| CN (1) | CN104674779A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739196A (en) * | 2017-02-22 | 2017-05-31 | 天鼎丰聚丙烯材料技术有限公司 | Composite earthwork cloth and preparation method thereof and manufacturing equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012048545A1 (en) * | 2010-10-14 | 2012-04-19 | Ng Ying Yuk | Nonwoven fabric, manufacturing method thereof and filters formed by it |
| CN202610514U (en) * | 2012-05-18 | 2012-12-19 | 山东泰鹏无纺有限公司 | Needle-punched non-woven cloth with progressive increase type filter fineness |
| US20140315017A1 (en) * | 2013-04-17 | 2014-10-23 | Richard Carter | Ground cover for containment barriers |
| CN104131412A (en) * | 2014-07-16 | 2014-11-05 | 东华大学 | Manufacturing method of composite structure soil engineering filter material |
| CN104132877A (en) * | 2014-07-16 | 2014-11-05 | 东华大学 | Apparatus for detecting filtering performance of geotextile, and method thereof |
-
2015
- 2015-01-12 CN CN201510013630.7A patent/CN104674779A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012048545A1 (en) * | 2010-10-14 | 2012-04-19 | Ng Ying Yuk | Nonwoven fabric, manufacturing method thereof and filters formed by it |
| CN202610514U (en) * | 2012-05-18 | 2012-12-19 | 山东泰鹏无纺有限公司 | Needle-punched non-woven cloth with progressive increase type filter fineness |
| US20140315017A1 (en) * | 2013-04-17 | 2014-10-23 | Richard Carter | Ground cover for containment barriers |
| CN104131412A (en) * | 2014-07-16 | 2014-11-05 | 东华大学 | Manufacturing method of composite structure soil engineering filter material |
| CN104132877A (en) * | 2014-07-16 | 2014-11-05 | 东华大学 | Apparatus for detecting filtering performance of geotextile, and method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739196A (en) * | 2017-02-22 | 2017-05-31 | 天鼎丰聚丙烯材料技术有限公司 | Composite earthwork cloth and preparation method thereof and manufacturing equipment |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |
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| RJ01 | Rejection of invention patent application after publication |