CN105544570A - Connecting structure for earth rock cofferdam seepage-proof geomembrane and concrete cofferdam - Google Patents
Connecting structure for earth rock cofferdam seepage-proof geomembrane and concrete cofferdam Download PDFInfo
- Publication number
- CN105544570A CN105544570A CN201610040369.4A CN201610040369A CN105544570A CN 105544570 A CN105544570 A CN 105544570A CN 201610040369 A CN201610040369 A CN 201610040369A CN 105544570 A CN105544570 A CN 105544570A
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- China
- Prior art keywords
- cofferdam
- geomembrane
- concrete
- weir body
- earth
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2450/00—Gaskets
- E02D2450/10—Membranes
- E02D2450/105—Membranes impermeable
- E02D2450/106—Membranes impermeable for liquids
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Revetment (AREA)
Abstract
The invention discloses a connecting structure for an earth rock cofferdam seepage-proof geomembrane and a concrete cofferdam. The connecting structure comprises cushion plates, the geomembrane, clay seepage-proof cushion layers, seepage-proof transition cushion layers, an earth rock cofferdam body and a concrete cofferdam body. The earth rock cofferdam body is arranged in the direction perpendicular to water flow. The concrete cofferdam body is arranged in the direction of the water flow. The earth rock cofferdam body and the concrete cofferdam body are connected. The geomembrane is arranged at the position close to the axis of the earth rock cofferdam body and is attached to the surface of the concrete cofferdam body in a pressed manner through the cushion plates, wherein one or more cushion plates are arranged and fixed to the surface of the concrete cofferdam body. The two sides of the geomembrane are filled with the seepage-proof transition layers, and the parts between the seepage-proof transition layers and the concrete cofferdam body are filled with the clay seepage-proof cushion layers. The connecting structure is simple, convenient to construct and high in economical efficiency and safety.
Description
Technical field
The present invention relates to seepage prevention of cofferdam processing technology field, be specifically related to the syndeton of a kind of seepage control for rock-earth cofferdam geomembrane and concrete cofferdam.
Background technology
In the construction of wide riverbed Hydraulic and Hydro-Power Engineering stage diversion, usual Parallel to the flow direction cofferdam adopts concrete cofferdam, Transverse to the flow direction cofferdam adopts earth rock cofferdam, and earth rock cofferdam construction period ordinary water level often adopts concrete cut antiseepage with lower caldding layer, construction period ordinary water level above weir body often adopts geomembrane anti-seepage.When seepage prevention of cofferdam system is closed, earth rock cofferdam and concrete cofferdam seepage prevention system connectivity problem will be related to, if earth rock cofferdam adopts geomembrane anti-seepage, just relate to geomembrane and concrete cofferdam connectivity problem.Conventional connection handling measure mainly contains in the impervious body arranging concrete key-wall insertion earth rock cofferdam, and work progress is complicated, difficulty of construction is high, investment is large.
Summary of the invention
The present invention be directed to prior art Problems existing, provide the syndeton of a kind of seepage control for rock-earth cofferdam geomembrane and concrete cofferdam, reach and reduce technical difficulty, easy construction, reduction engineering cost, increase the antiseepage object such as safely.
Technical scheme of the present invention is: the syndeton of a kind of seepage control for rock-earth cofferdam geomembrane and concrete cofferdam, includes backing plate, geomembrane, clay core bed course, antiseepage transition bed course, earth rock cofferdam weir body, concrete cofferdam weir body; Earth rock cofferdam weir body is that Transverse to the flow direction is arranged, concrete cofferdam weir body is that Parallel to the flow direction is arranged, earth rock cofferdam weir body is connected with concrete cofferdam weir body; Geomembrane is provided with near body axis position, earth rock cofferdam weir, geomembrane overlays in surface, concrete cofferdam weir by backing plate, backing plate is provided with monolithic or polylith, backing plate is fixed on surface, concrete cofferdam weir, backing plate is by being bolted to surface, concrete cofferdam weir, bolt is preferably expansion bolt, and the block of backing plate is several to be set according to cofferdam water head before the weir; Antiseepage transition bed course has been filled in geomembrane both sides, has filled clay core bed course between antiseepage transition bed course and concrete cofferdam weir body.
When described backing plate is provided with polylith, geomembrane is laid for folding, between different masses backing plate and between backing plate and concrete cofferdam weir body, be all folded with geomembrane.
In clay core bed course, geomembrane is provided with geomembrane stretching, extension joint.It is that U-shaped folding one or more layers of geomembrane forms that geomembrane stretches joint.When cofferdam is uneven fill or differential settlement time, geomembrane stretches energy-conservation enough adaptive deformations better, avoids seepage prevention system to pull open and forms crack.
The invention has the beneficial effects as follows: syndeton of the present invention is simple, easy construction, investment reduction, have higher safety.Simplify the connected mode of geomembrane and concrete cofferdam, when avoiding conventional method construction, easily cause current, by the space between geomembrane and concrete cofferdam, the problem of seepage occurs.
Accompanying drawing explanation
Fig. 1 is floor map of the present invention;
Fig. 2 is elevational schematic view of the present invention;
Fig. 3 is the structural representation that geomembrane of the present invention stretches joint.
In figure: 1-backing plate; 2-geomembrane; 3-clay core bed course; 4-antiseepage transition bed course; 5-geomembrane stretches joint; 6-bolt; 7-earth rock cofferdam weir body; 8-concrete cofferdam weir body; 9-earth rock cofferdam bank protection bed course; 10-earth rock cofferdam bank protection.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1 to Figure 3, the syndeton of a kind of seepage control for rock-earth cofferdam geomembrane and concrete cofferdam, comprises backing plate 1, geomembrane 2, clay core bed course 3, antiseepage transition bed course 4, earth rock cofferdam weir body 7, concrete cofferdam weir body 8.Earth rock cofferdam weir body 7 is Transverse to the flow direction layout, and concrete cofferdam weir body 8 is that Parallel to the flow direction is arranged, earth rock cofferdam weir body 7 is connected with concrete cofferdam weir body 8; Be provided with geomembrane 2 near earth rock cofferdam weir body 7 axial location, geomembrane 2 is overlayed on concrete cofferdam weir body 8 surface by backing plate 1, and backing plate 1 is provided with 2 pieces, and backing plate 1 is fixed on body 8 surface, concrete cofferdam weir by expansion bolt 6; Antiseepage transition bed course 4 has been filled in geomembrane 2 both sides, has filled clay core bed course 3 between antiseepage transition bed course 4 and concrete cofferdam weir body 8.
Geomembrane 2 is laid for folding, between backing plate 1 and between backing plate 1 and concrete cofferdam weir body 8, be all folded with geomembrane 2.
Geomembrane 2 in clay core bed course 3 is provided with geomembrane and stretches joint 5.It is that U-shaped folding 3 layers of geomembrane 2 forms that geomembrane stretches joint 5.When cofferdam is uneven fill or differential settlement time, geomembrane stretches joint 5 can adaptive deformation better, avoids seepage prevention system to pull open and forms crack.
The concrete implementation step of the syndeton of the present invention's a kind of seepage control for rock-earth cofferdam geomembrane and concrete cofferdam is as follows:
(1) first constructed concrete cofferdam weir body 8, earth rock cofferdam weir body 7 adopts geomembrane 2 antiseepage, and geomembrane 2 adopts composite geo-membrane.Along with earth rock cofferdam weir body 7 successively raising is successively installed when the present invention constructs.
(2) electric impact drill is adopted to bore at concrete cofferdam weir body 8 and seepage control for rock-earth cofferdam geomembrane 2 connecting part
bolt hole, spacing 10cm, guarantees body 8 surfacing of concrete cofferdam weir, and installs a set of M10 expansion bolt 6 in the borehole during boring.
(3) wooden backing plate 1 is holed, the size of boring, spacing and concrete cofferdam weir body 8 are holed identical.Cutting is carried out to wooden backing plate 1 plate face and edges of the periphery, makes it smooth, avoid because geomembrane 2 is poked by injustice.
(4) geomembrane 2 is folded, make between two pieces of wooden backing plates 1, between wooden backing plate 1 and concrete cofferdam weir body 8, all clip geomembrane 2.In clay core bed course 3, geomembrane 2 is provided with geomembrane stretching, extension joint 5, and it is that U-shaped folding 3 layers of geomembrane 2 forms that geomembrane stretches joint 5.When cofferdam is uneven fill or differential settlement time, geomembrane stretches joint 5 can adaptive deformation better, avoids seepage prevention system to pull open and forms crack.
(5) nut of erection bolt, and firmly make wooden backing plate 1 and concrete cofferdam weir body 8 fit tightly.
(6) around syndeton, fill highly plastic clay, form clay core bed course 3; Antiseepage transition bed course 4 is filled in geomembrane 2 both sides, and clay core bed course 3 and antiseepage transition bed course 4 raise along with the synchronous successively place mat of earth rock cofferdam weir body 7, often pad one deck with regard to grinding compacting one deck, until reach earth rock cofferdam weir body 7 design height.
(7) along with earth rock cofferdam weir body 7 raises, the earth rock cofferdam bank protection 10 of earth rock cofferdam upstream side of successively constructing and earth rock cofferdam bank protection bed course 9.
Claims (4)
1. the syndeton of a seepage control for rock-earth cofferdam geomembrane and concrete cofferdam, include backing plate (1), geomembrane (2), clay core bed course (3), antiseepage transition bed course (4), earth rock cofferdam weir body (7), concrete cofferdam weir body (8), it is characterized in that: described earth rock cofferdam weir body (7) is Transverse to the flow direction layout, described concrete cofferdam weir body (8) is Parallel to the flow direction layout, earth rock cofferdam weir body (7) is connected with concrete cofferdam weir body (8), geomembrane (2) is being provided with near earth rock cofferdam weir body (7) axial location, described geomembrane (2) overlays on surface, concrete cofferdam weir body (8) by backing plate (1), described backing plate (1) is provided with monolithic or polylith, backing plate (1) is fixed on surface, concrete cofferdam weir body (8), antiseepage transition bed course (4) has been filled in geomembrane (2) both sides, clay core bed course (3) has been filled between antiseepage transition bed course (4) and concrete cofferdam weir body (8).
2. the syndeton of seepage control for rock-earth cofferdam geomembrane according to claim 1 and concrete cofferdam, is characterized in that: described backing plate (1) is fixed on surface, concrete cofferdam weir body (8) by bolt (6).
3. the syndeton of a kind of seepage control for rock-earth cofferdam geomembrane according to claim 1 and concrete cofferdam, it is characterized in that: when described backing plate (1) is provided with polylith, geomembrane (2) is laid for folding, between different masses backing plate (1) and between backing plate (1) and concrete cofferdam weir body (8), be all folded with geomembrane (2).
4. the syndeton of seepage control for rock-earth cofferdam geomembrane according to claim 3 and concrete cofferdam, is characterized in that: the geomembrane (2) in described clay core bed course (3) is provided with geomembrane and stretches joint (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040369.4A CN105544570A (en) | 2016-01-21 | 2016-01-21 | Connecting structure for earth rock cofferdam seepage-proof geomembrane and concrete cofferdam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040369.4A CN105544570A (en) | 2016-01-21 | 2016-01-21 | Connecting structure for earth rock cofferdam seepage-proof geomembrane and concrete cofferdam |
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| CN105544570A true CN105544570A (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610040369.4A Pending CN105544570A (en) | 2016-01-21 | 2016-01-21 | Connecting structure for earth rock cofferdam seepage-proof geomembrane and concrete cofferdam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469079A (en) * | 2018-10-31 | 2019-03-15 | 上海市政工程设计研究总院（集团）有限公司 | A kind of cofferdam connection structure |
| CN114855840A (en) * | 2022-06-01 | 2022-08-05 | 中国水利水电第八工程局有限公司 | Earth-rock cofferdam and concrete cofferdam connecting structure and construction method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201850553U (en) * | 2010-11-05 | 2011-06-01 | 中铁十三局集团有限公司 | Composite geomembrane weir core cofferdam |
| CN103243681A (en) * | 2013-05-16 | 2013-08-14 | 黄河勘测规划设计有限公司 | Flexible connection method for geomembrane for earth and rockfill dam seepage proofing and concrete building |
| CN203144967U (en) * | 2013-03-18 | 2013-08-21 | 中国水电顾问集团成都勘测设计研究院 | Connecting structure of high earth rock cofferdam anti-seepage earth material and concrete anti-seepage wall |
| CN104060580A (en) * | 2014-06-05 | 2014-09-24 | 河海大学 | Method for eliminating clamp effect on seepage-proofing film anchoring part of high film faced rockfill dam by compensating displacement |
| CN203866776U (en) * | 2014-04-11 | 2014-10-08 | 中国水电顾问集团国际工程有限公司 | Connecting structure of geomembrane and concrete building |
| WO2014166996A1 (en) * | 2013-04-09 | 2014-10-16 | Carpi Tech B.V. | Method and device for covering and waterproofing joints in hydraulic works |
| CN205530306U (en) * | 2016-01-21 | 2016-08-31 | 浙江省水利水电勘测设计院 | Earth rock cofferdam prevention of seepage geomembrane and concrete cofferdam's connection structure |
-
2016
- 2016-01-21 CN CN201610040369.4A patent/CN105544570A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201850553U (en) * | 2010-11-05 | 2011-06-01 | 中铁十三局集团有限公司 | Composite geomembrane weir core cofferdam |
| CN203144967U (en) * | 2013-03-18 | 2013-08-21 | 中国水电顾问集团成都勘测设计研究院 | Connecting structure of high earth rock cofferdam anti-seepage earth material and concrete anti-seepage wall |
| WO2014166996A1 (en) * | 2013-04-09 | 2014-10-16 | Carpi Tech B.V. | Method and device for covering and waterproofing joints in hydraulic works |
| CN103243681A (en) * | 2013-05-16 | 2013-08-14 | 黄河勘测规划设计有限公司 | Flexible connection method for geomembrane for earth and rockfill dam seepage proofing and concrete building |
| CN203866776U (en) * | 2014-04-11 | 2014-10-08 | 中国水电顾问集团国际工程有限公司 | Connecting structure of geomembrane and concrete building |
| CN104060580A (en) * | 2014-06-05 | 2014-09-24 | 河海大学 | Method for eliminating clamp effect on seepage-proofing film anchoring part of high film faced rockfill dam by compensating displacement |
| CN205530306U (en) * | 2016-01-21 | 2016-08-31 | 浙江省水利水电勘测设计院 | Earth rock cofferdam prevention of seepage geomembrane and concrete cofferdam's connection structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469079A (en) * | 2018-10-31 | 2019-03-15 | 上海市政工程设计研究总院（集团）有限公司 | A kind of cofferdam connection structure |
| CN114855840A (en) * | 2022-06-01 | 2022-08-05 | 中国水利水电第八工程局有限公司 | Earth-rock cofferdam and concrete cofferdam connecting structure and construction method thereof |
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Application publication date: 20160504 |