CN107630449A - A kind of degradable sand wick - Google Patents
A kind of degradable sand wick Download PDFInfo
- Publication number
- CN107630449A CN107630449A CN201710708768.8A CN201710708768A CN107630449A CN 107630449 A CN107630449 A CN 107630449A CN 201710708768 A CN201710708768 A CN 201710708768A CN 107630449 A CN107630449 A CN 107630449A
- Authority
- CN
- China
- Prior art keywords
- sand
- drain bag
- degradable
- wick
- sand drain
- 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.)
- Pending
Links
- 239000004576 sand Substances 0.000 title claims abstract description 70
- 230000015556 catabolic process Effects 0.000 claims abstract description 7
- 238000006731 degradation reaction Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 7
- 229920000954 Polyglycolide Polymers 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 238000009940 knitting Methods 0.000 claims description 2
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 2
- 239000004633 polyglycolic acid Substances 0.000 claims description 2
- 239000004626 polylactic acid Substances 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- 239000003356 suture material Substances 0.000 claims description 2
- 238000007596 consolidation process Methods 0.000 abstract description 13
- 238000007599 discharging Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229920006238 degradable plastic Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to a kind of degradable sand wick, including sand drain bag and the sand that is filled in sand drain bag, the sand drain bag are degradable.The invention provides a kind of degradable sand wick, the sand drain bag of degradable sand wick can voluntarily be degraded for 3 12 months according to requirement of engineering after discharging consolidation terminates, specific degradation time can be controlled by sand drain bag raw material mixed ratio difference, meet the duration needs of different engineerings.Sand in sand wick is after the constraint of no sand drain bag, in ground consolidation deformation process, directly dislocation or bad break, vertical drainage passage can become discontinuous, so as to continue discharging consolidation.After the degraded of sand drain bag, metro shield will not also be had an impact.
Description
Technical field
The present invention relates to Soft Ground field, more particularly, to a kind of degradable sand wick.
Background technology
Construction is carried out in soft soil foundation, is increasingly increased with the load of works, the requirement to deformation is more and more tighter,
So to utilize technological means to improve the bearing capacity of soft soil foundation, it is set to meet engine request.For at present, vacuum method is
One of the most frequently used method of Soft Ground, vertical drainage passage master when using this method discharging consolidation soft soil foundation
The selection wanted is sand wick and plastic draining board, but this vertical drainage body still has some shortcomings：Soft Ground is complete
Still it is retained in after in ground, continues discharging consolidation, cause settlement after construction.Although have in some existing patents of invention degradable
Plastic draining board, but this drain bar use degradable filter membrane elongation percentage, currently can not all meet《Marine traffic engineering plastics
Drain bar application technology code》(JTS_206-1-2009) to the strict regulations of the filter membrane elongation percentage of plastic draining board in.It can drop
Solution filter membrane elongation percentage, which crosses senior general, causes filter membrane to sink and be embedded into drain bar plate core in soil pressure effect, has a strong impact on drain bar
Water passing capacity, so as to influence the technique effect of discharging consolidation.Generally speaking, although having there is degradable row both at home and abroad
Water plate, but its technology is immature, it is impossible to meet strict technical requirements, still in the exploratory stage.And sand wick is to utilize bag
Interior sand is as drainage channel, and the requirement to sand pocket is relatively low, and the elongation percentage of degradation material has no significant effect to it.It is another
Aspect, in recent years, subway transportation are quickly grown, and vertical drainage during shield-tunneling construction in ground, which is known from experience, hinders shield process, to applying
Work causes to perplex.
The content of the invention
The present invention is retained in ground relaying to solve the sand wick that above prior art provides after discharging consolidation is completed
The continuous discharging consolidation that carries out causes settlement after construction and influences the technological deficiency of ground subsequent construction, there is provided a kind of degradable bag
Sand loading well.
To realize above goal of the invention, the technical scheme of use is：
A kind of degradable sand wick, including sand drain bag and the sand that is filled in sand drain bag, the sand drain bag are degradable.
Compared with prior art, the beneficial effects of the invention are as follows：
The invention provides a kind of degradable sand wick, the sand drain bag of degradable sand wick can be according to engineering need
Voluntarily to degrade within 3-12 months after discharging consolidation terminates, specific degradation time can be different by sand drain bag raw material mixed ratio
To control, meet the duration needs of different engineerings.Sand in sand wick deforms after the constraint of no sand drain bag in ground consolidation
During, directly dislocation or bad break, vertical drainage passage it can become discontinuous, so as to which discharging consolidation can not be continued.Sand drain bag drops
Xie Hou, metro shield will not also be had an impact.
Brief description of the drawings
Fig. 1 is the cross-sectional view of sand drain.
Fig. 2 uses schematic diagram for sand drain.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；
Below in conjunction with drawings and examples, the present invention is further elaborated.
Embodiment 1
As shown in figure 1, a kind of degradable sand wick, including sand drain bag 1 and the sand 2 that is filled in sand drain bag 1, it is described
Sand drain bag 1 is made up of degradation material, including PLA, polyglycolic acid, polypropylene fibre etc..
Wherein, sand drain bag 1 is in the cylindrical shape of two open ends, 1 knitting formings of sand drain bag, no seam；Or sand drain
Bag 1 is molded by being sutured after monolayer material doubling, and suture material 3 is degradation material；Its top and bottom knot or with degradable
Suture 4 tighten, form the vertical drainage passage of closure.Specifically used when, first sand 2 is packed into sand drain bag 1,
Then its top and bottom are knotted or tightened with degradable suture 4.1 a diameter of 7cm of sand drain bag, length is according to actual work
In journey depending on vertical drainage body construction depth, do not splice as far as possible in the longitudinal direction, closed if splicing with degradable linear slit.
Such as Fig. 2, the specifically used process of degradable sand wick is as follows, and sand drain is inserted vertically into soft soil foundation, and underground water is saturating
Cross sand drain bag 1 to enter in sand 2, in the presence of negative pressure of vacuum, discharged after being pumped down to sand bedding course, ground consolidation.In basement process
In period, the tensile strength and elongation of sand drain bag 1 keep constant, and during can guarantee that ground consolidation, sand drain does not misplace
Or bad break so that displacement hull draining is continuously unimpeded.Terminate in foundation treatment engineering in latter year, sand drain bag 1 starts to degrade, now
In the presence of soil pressure, the sand post that diameter only has 7cm can be squeezed and bad break, and vertical drainage body is discontinuous, and drainage disappears
Lose.After sand drain bag 1 is degraded, sand 2 is only left in ground, does not interfere with the shield process of subway.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (3)
1. a kind of degradable sand wick, including sand drain bag and the sand that is filled in sand drain bag, it is characterised in that：The sand drain
Bag is degradable.
2. degradable sand wick according to claim 1, it is characterised in that：Sand drain bag is made up of degradation material,
Including PLA, polyglycolic acid, polypropylene fibre.
3. degradable sand wick according to claim 1, it is characterised in that：The sand drain bag is in the circle of two open ends
Tubular, knitting forming of sand drain bag, no seam；Or sand drain bag is molded by being sutured after monolayer material doubling, suture material
For degradation material；Its top and bottom knot or tightened with degradable suture, form the vertical drainage passage of closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708768.8A CN107630449A (en) | 2017-08-17 | 2017-08-17 | A kind of degradable sand wick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708768.8A CN107630449A (en) | 2017-08-17 | 2017-08-17 | A kind of degradable sand wick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107630449A true CN107630449A (en) | 2018-01-26 |
Family
ID=61099641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710708768.8A Pending CN107630449A (en) | 2017-08-17 | 2017-08-17 | A kind of degradable sand wick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107630449A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962497A (en) * | 2020-08-14 | 2020-11-20 | 福建省欣硕景观绿化有限公司 | Foundation reinforcing structure and reinforcing structure installation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100645332B1 (en) * | 2006-07-11 | 2006-11-15 | 주식회사 상지엔지니어링 | Multiple rice straw drain for improving soft ground |
| CN101503875A (en) * | 2009-02-06 | 2009-08-12 | 孔清华 | Vacuum drainage sand wick soft ground processing method |
| CN202543888U (en) * | 2012-03-31 | 2012-11-21 | 仪征市振威无纺制品有限公司 | Environmental-friendly drainage board |
| CN204456062U (en) * | 2015-01-27 | 2015-07-08 | 江苏德盈土工材料有限公司 | A kind of environment-friendly type plastic band drain that can all degrade |
| CN205576889U (en) * | 2016-04-20 | 2016-09-14 | 浙江省水利水电勘测设计院 | Ecological drain bar of dumbbell shape of silt is prevented in quick drainage |
-
2017
- 2017-08-17 CN CN201710708768.8A patent/CN107630449A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100645332B1 (en) * | 2006-07-11 | 2006-11-15 | 주식회사 상지엔지니어링 | Multiple rice straw drain for improving soft ground |
| CN101503875A (en) * | 2009-02-06 | 2009-08-12 | 孔清华 | Vacuum drainage sand wick soft ground processing method |
| CN202543888U (en) * | 2012-03-31 | 2012-11-21 | 仪征市振威无纺制品有限公司 | Environmental-friendly drainage board |
| CN204456062U (en) * | 2015-01-27 | 2015-07-08 | 江苏德盈土工材料有限公司 | A kind of environment-friendly type plastic band drain that can all degrade |
| CN205576889U (en) * | 2016-04-20 | 2016-09-14 | 浙江省水利水电勘测设计院 | Ecological drain bar of dumbbell shape of silt is prevented in quick drainage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962497A (en) * | 2020-08-14 | 2020-11-20 | 福建省欣硕景观绿化有限公司 | Foundation reinforcing structure and reinforcing structure installation method |
| CN111962497B (en) * | 2020-08-14 | 2021-07-27 | 福建省欣硕景观绿化有限公司 | Foundation reinforcing structure and reinforcing structure installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180126 |