CN202945574U - Self-healing water stop structure for composite geo-membrane impervious structure - Google Patents
Self-healing water stop structure for composite geo-membrane impervious structure Download PDFInfo
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- CN202945574U CN202945574U CN 201220585186 CN201220585186U CN202945574U CN 202945574 U CN202945574 U CN 202945574U CN 201220585186 CN201220585186 CN 201220585186 CN 201220585186 U CN201220585186 U CN 201220585186U CN 202945574 U CN202945574 U CN 202945574U
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Abstract
The utility model relates to a self-healing water stop structure for a composite geo-membrane impervious structure. By means of the self-healing water stop structure for the composite geo-membrane impervious structure, impermeable reliability of a composite geo-membrane used in an earth rock cofferdam is improved. The technical scheme includes that the self-healing water stop structure for the composite geo-membrane impervious structure is arranged on a river bed section and a bank slope anchorage section, wherein the river bed section comprises an impervious wall and a composite geo-membrane, and the bank slope anchorage section comprises a toe board, a concrete slab protection layer, a inverted filter and a composite geo-membrane. The self-healing water stop structure for the composite geo-membrane impervious structure is characterized in that a cohesionless padding area is arranged on the juncture of the impervious wall and the composite geo-membrane in the river bed section, a cohesionless padding area is arranged on the top of the joint of the toe board and the concrete slab protection layer, and the cohesionless padding area is composed of non-woven geotechnical cloth and coal ash, wherein the non-woven geotechnical cloth is knitted by stainless steel lining with holes, and the coal ash is padded in the non-woven geotechnical cloth. The self-healing water stop structure for the composite geo-membrane impervious structure is suitable for a composite geo-membrane impervious cofferdam or a composite geo-membrane impervious earth and rockfill dam.
Description
Technical field
The utility model relates to a kind of self-healing property water-stopping structure for the impermeable composite geomembrane structure.Be applicable to cofferdam or the earth and rockfill dam of impermeable composite geomembrane.
Background technology
Enforcement along with China's strategy to develop western regions, a collection of high dam, superelevation dam puts into operation successively in recent years, these engineerings adopt annual cofferdam, the tunnel diversion mode of stopping more, be accelerating construction progress, earth rock cofferdam is adopted in cofferdam, dam upstream and downstream more, is much the pattern of clad can formula sloping core impermeable composite geomembrane.But according to statistics, there is relatively serious seepage in the composite geo-membrane earth rock cofferdam of nearly half engineering, in case especially composite geo-membrane the part occurs draws and breaks badly, must form a funnelform penetrating passage.How to tackle composite geo-membrane and damage rear concentrative seepage and take corresponding pretreatment measure, be still the present problem that needs consideration.
Summary of the invention
The technical problems to be solved in the utility model is: for the problem of above-mentioned existence, provide a kind of self-healing property water-stopping structure that is used for the impermeable composite geomembrane structure of simple in structure, easy construction, improve the reliability that composite geo-membrane is used for seepage control for rock-earth cofferdam.
The technical scheme that the utility model adopts is: a kind of self-healing property water-stopping structure for the impermeable composite geomembrane structure, this water-stopping structure is arranged on river-bed section and bank slope anchoring section, river-bed section comprises the composite geo-membrane that the impervious wall that stands in earth rock cofferdam and an end and impervious wall top are fixing, is provided with loaded filter below composite geo-membrane; The bank slope anchoring section comprises toe board, concrete slab topping, loaded filter and composite geo-membrane, and composite geo-membrane is lining in the seam crossing of toe board and concrete slab topping, loaded filter be positioned at the concrete slab topping below, it is characterized in that:
River-bed section arranges funnelform inviscid packing area in the junction of impervious wall and composite geo-membrane, this packing area consists of by filling out flyash in knitting non-woven geotextile;
The bank slope anchoring section arranges hemispheric inviscid packing area at the top of toe board and concrete slab topping seam, and this packing area consists of by filling out flyash in the knitting non-woven geotextile cover of stainless steel inner lining with holes.
The transmission coefficient of described inviscid packing area is at least than the little order of magnitude of transmission coefficient of loaded filter.
The beneficial effects of the utility model are: the utility model arranges inviscid packing area at composite geo-membrane and impervious wall or toe board connecting portion, when composite geo-membrane damages, flyash in inviscid packing area is permeated current and is brought into the loaded filter district, and alluvial is around the crack, thereby reduce gradually leakage, improve the reliability that composite geo-membrane is used for seepage control for rock-earth cofferdam, and this self-healing property water-stopping structure is simple in structure, good reliability, easy construction and cost are low.
Description of drawings
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the structural representation of embodiment 2.
The specific embodiment
Embodiment 1: as shown in Figure 1, the present embodiment is river-bed section antiseepage self-healing property water-stopping structure, have composite geo-membrane 3, loaded filter 4 and impervious wall 5, wherein impervious wall 5 stands in earth rock cofferdam, composite geo-membrane 3 is placed in the cofferdam and an end is fixed in impervious wall 5 tops, is loaded filter 4 below this composite geo-membrane.In this example, in the top layout certain thickness inviscid packing area of composite geo-membrane 3 with the binding site of impervious wall 5, this packing area is made of powder filler coal ash 2 in knitting non-woven geotextile 1-1.Inviscid packing area is the inverted trapezoidal funnel-form, is beneficial to flyash and assembles and constructability to location of cracks.In the present embodiment, inviscid packing area transmission coefficient than the little order of magnitude of loaded filter 4 transmission coefficients, is beneficial to form larger osmotic pressure difference at least.
In case composite geo-membrane 3 occur the part draw break bad, by seam loaded filter 4 interceptions at the end, alluvial is around the crack, and is closely knit under the long term of infiltration under the osmotic pressure difference effect for flyash 2 in inviscid packing area, seepage discharge reduces gradually, reaches stagnant water effect.
Embodiment 2: as shown in Figure 2, the present embodiment is bank slope anchoring section self-healing property water-stopping structure, build the toe board 6 that is connected with earth rock cofferdam in the bank slope of earth rock cofferdam both sides, be provided with composite geo-membrane 3 in earth rock cofferdam, and an end of this composite geo-membrane is fixed in toe board 6.Be loaded filter 4 below composite geo-membrane 3, the above is concrete slab topping 7, and concrete slab topping 7 flushes with toe board 6 upper surfaces.
This example is at the top of composite geo-membrane 3 with toe board 6 binding sites; namely concrete slab topping 7 arranges inviscid packing area with the top of toe board 6 seam crossings; this packing area consists of (semicircular in shape) by powder filler coal ash 2 in the knitting non-woven geotextile cover of stainless steel inner lining with holes 1-2, protects the flyash in inviscid packing area not run off when the knitting non-woven geotextile cover of this stainless steel inner lining with holes is used for storehouse water change.In the present embodiment, inviscid packing area transmission coefficient than the little order of magnitude of loaded filter 4 transmission coefficients, is beneficial to form larger osmotic pressure difference at least.
Assemble to the bottom in order to be beneficial to flyash, this example is shaped with the inverted triangle breach at concrete slab topping 7 and toe board 6 seam crossing tops.
If composite geo-membrane 3 damages flyash 2 in inviscid packing area and seen through the crack by the infiltration current bring loaded filter 4 under the penetration effect, alluvial is around the crack and closely knit under the long term that is seeping water, and seepage discharge progressively reduces, and reaches stagnant water effect.
Claims (2)
1. self-healing property water-stopping structure that is used for the impermeable composite geomembrane structure, this water-stopping structure is arranged on river-bed section and bank slope anchoring section, river-bed section comprises the composite geo-membrane (3) that the impervious wall (5) that stands in earth rock cofferdam and an end and impervious wall top are fixing, is provided with loaded filter (4) below composite geo-membrane; The bank slope anchoring section comprises toe board (6), concrete slab topping (7), loaded filter (4) and composite geo-membrane (3); composite geo-membrane (3) is lining in the seam crossing of toe board (6) and concrete slab topping (7); loaded filter (4) be positioned at concrete slab topping (7) below, it is characterized in that:
River-bed section arranges funnelform inviscid packing area in the junction of impervious wall (5) and composite geo-membrane (3), and this packing area consists of by filling out flyash (2) in knitting non-woven geotextile (1-1);
The bank slope anchoring section arranges hemispheric inviscid packing area at the top of toe board (6) and concrete slab topping (7) seam, and this packing area consists of by filling out flyash (2) in the knitting non-woven geotextile cover of stainless steel inner lining with holes (1-2).
2. the self-healing property water-stopping structure for the impermeable composite geomembrane structure according to claim 1 is characterized in that: the transmission coefficient of described inviscid packing area is at least than the little order of magnitude of transmission coefficient of loaded filter (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585186 CN202945574U (en) | 2012-11-08 | 2012-11-08 | Self-healing water stop structure for composite geo-membrane impervious structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585186 CN202945574U (en) | 2012-11-08 | 2012-11-08 | Self-healing water stop structure for composite geo-membrane impervious structure |
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| Publication Number | Publication Date |
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| CN202945574U true CN202945574U (en) | 2013-05-22 |
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| CN 201220585186 Expired - Lifetime CN202945574U (en) | 2012-11-08 | 2012-11-08 | Self-healing water stop structure for composite geo-membrane impervious structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110011A (en) * | 2014-07-29 | 2014-10-22 | 葛洲坝集团第五工程有限公司 | Fly ash filling device for waterstop steel cover of surface layer of concrete faced rockfill dam and filling method thereof |
| CN104153322A (en) * | 2014-08-04 | 2014-11-19 | 河海大学 | Method for connecting high concrete face rockfill dam diaphragm wall with toe board on deep and thick overlay through membrane |
| CN105484206A (en) * | 2016-01-07 | 2016-04-13 | 中国电建集团华东勘测设计研究院有限公司 | Structure for eliminating reservoir bottom geomembrane impervous blanket reverse seepage pressure and construction method |
| CN106988237A (en) * | 2017-02-14 | 2017-07-28 | 中国葛洲坝集团第工程有限公司 | Conveyance Box Culvert bottom plate waterstop reinforces stopping means and construction method |
| CN109667242A (en) * | 2018-12-17 | 2019-04-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of face dam crack reparation structure |
| CN110593202A (en) * | 2019-09-26 | 2019-12-20 | 中国电建集团华东勘测设计研究院有限公司 | Water stop type suitable for inclined wall geomembrane cofferdam bank slope toe board construction joint |
| CN117306463A (en) * | 2023-09-13 | 2023-12-29 | 大连理工大学 | Design and construction method for inclined joint for improving deformation of water-stopping joint of upper panel dam of covering layer |
-
2012
- 2012-11-08 CN CN 201220585186 patent/CN202945574U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110011A (en) * | 2014-07-29 | 2014-10-22 | 葛洲坝集团第五工程有限公司 | Fly ash filling device for waterstop steel cover of surface layer of concrete faced rockfill dam and filling method thereof |
| CN104110011B (en) * | 2014-07-29 | 2016-05-04 | 中国葛洲坝集团第五工程有限公司 | For device and the method for filling of rock surface watertight seal steel cage perfusion powder coal ash |
| CN104153322A (en) * | 2014-08-04 | 2014-11-19 | 河海大学 | Method for connecting high concrete face rockfill dam diaphragm wall with toe board on deep and thick overlay through membrane |
| CN104153322B (en) * | 2014-08-04 | 2016-02-03 | 河海大学 | The method of attachment of film between thick backfill impervious wall and toe board on deep covering layer |
| CN105484206A (en) * | 2016-01-07 | 2016-04-13 | 中国电建集团华东勘测设计研究院有限公司 | Structure for eliminating reservoir bottom geomembrane impervous blanket reverse seepage pressure and construction method |
| CN106988237A (en) * | 2017-02-14 | 2017-07-28 | 中国葛洲坝集团第工程有限公司 | Conveyance Box Culvert bottom plate waterstop reinforces stopping means and construction method |
| CN109667242A (en) * | 2018-12-17 | 2019-04-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of face dam crack reparation structure |
| CN110593202A (en) * | 2019-09-26 | 2019-12-20 | 中国电建集团华东勘测设计研究院有限公司 | Water stop type suitable for inclined wall geomembrane cofferdam bank slope toe board construction joint |
| CN117306463A (en) * | 2023-09-13 | 2023-12-29 | 大连理工大学 | Design and construction method for inclined joint for improving deformation of water-stopping joint of upper panel dam of covering layer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Yongming Inventor after: Ren Jinming Inventor after: Chen Yonghong Inventor after: Liang Xianpei Inventor after: Chen Jiang Inventor after: Chi Fudong Inventor after: Hu Yongfu Inventor after: Wang Daoming Inventor before: Wang Yongming Inventor before: Ren Jinming Inventor before: Chen Yonghong Inventor before: Liang Xianpei |
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| COR | Change of bibliographic data | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 22 Patentee after: HYDROCHINA HUADONG ENGINEERING Corp.,Ltd. Address before: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 22 Patentee before: Hydrochina Hangzhou Engineering Corp. Address after: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 22 Patentee after: POWERCHINA HUADONG ENGINEERING Corp.,Ltd. Address before: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 22 Patentee before: HYDROCHINA HUADONG ENGINEERING Corp.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20160905 Address after: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 22 Patentee after: POWERCHINA HUADONG ENGINEERING Corp.,Ltd. Patentee after: HUANENG LANCANG RIVER HYDROPOWER Inc. Address before: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 22 Patentee before: POWERCHINA HUADONG ENGINEERING Corp.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130522 |
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| CX01 | Expiry of patent term |