CN205530306U - Earth rock cofferdam prevention of seepage geomembrane and concrete cofferdam's connection structure - Google Patents
Earth rock cofferdam prevention of seepage geomembrane and concrete cofferdam's connection structure Download PDFInfo
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- CN205530306U CN205530306U CN201620060955.0U CN201620060955U CN205530306U CN 205530306 U CN205530306 U CN 205530306U CN 201620060955 U CN201620060955 U CN 201620060955U CN 205530306 U CN205530306 U CN 205530306U
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Abstract
Earth rock cofferdam prevention of seepage geomembrane and concrete cofferdam's connection structure, including backing plate, geomembrane, clay prevention of seepage bed course, prevention of seepage transition bed course, the earth rock cofferdam weir body and the concrete cofferdam weir body, the earth rock cofferdam weir body is arranged for perpendicular water flow direction, the concrete cofferdam weir body is for arranging in the same direction as water flow direction, the earth rock cofferdam weir body and the concrete cofferdam weir body link to each other, be equipped with the geomembrane near earth rock cofferdam weir body axis location, the geomembrane overlays at concrete cofferdam weir body surface face through the backing plate, the backing plate is equipped with monolithic or polylith, the backing plate is fixed at concrete cofferdam weir body surface face, prevention of seepage transition bed course has been filled to the geomembrane both sides, clay prevention of seepage bed course has been filled between the prevention of seepage transition bed course and the concrete cofferdam weir body. The utility model discloses simple structure, construction convenience, there are higher economic nature and security.
Description
Technical field
This utility model relates to seepage prevention of cofferdam processing technology field, is specifically related to a kind of seepage control for rock-earth cofferdam geomembrane and coagulation fortifield village
The attachment structure on weir.
Background technology
In the Hydraulic and Hydro-Power Engineering stage diversion construction of wide riverbed, usual Parallel to the flow direction cofferdam uses concrete cofferdam, vertical water
Flow path direction cofferdam use earth rock cofferdam, and earth rock cofferdam construction period ordinary water level with lower caldding layer frequently with concrete cut antiseepage,
Construction period ordinary water level above weir body is frequently with geomembrane anti-seepage.Seepage prevention of cofferdam system close time, will relate to earth rock cofferdam and
Concrete cofferdam seepage prevention system connectivity problem, if earth rock cofferdam uses geomembrane anti-seepage, relates to geomembrane and coagulation fortifield village
Weir connectivity problem.Conventional connection treatment measures mainly have in the impervious body arranging concrete key-wall insertion earth rock cofferdam, construct
Journey is complicated, difficulty of construction is high, investment is big.
Utility model content
This utility model is the problem existed for prior art, it is provided that a kind of seepage control for rock-earth cofferdam geomembrane and concrete cofferdam
Attachment structure, reduce technical difficulty, easy construction, reduction engineering cost, increase the antiseepage purpose such as safely.
The technical solution of the utility model is: the attachment structure of seepage control for rock-earth cofferdam geomembrane and concrete cofferdam, include 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
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 and concrete cofferdam weir body phase
Even；Being provided with geomembrane 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, and backing plate is fixed on surface, concrete cofferdam weir, and backing plate can be bolted on concrete cofferdam
Surface, 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；Geomembrane both sides are filled
There is antiseepage transition bed course, between antiseepage transition bed course and concrete cofferdam weir body, filled clay core bed course.
When described backing plate is provided with polylith, geomembrane is laid for folding, between different masses backing plate and backing plate and coagulation fortifield village
Geomembrane all it is folded with between the body of weir, weir.
In clay core bed course, geomembrane is provided with geomembrane stretching, extension joint.Geomembrane stretch joint for the U-shaped folding of geomembrane one layer or
Multilamellar forms.Filling or during differential settlement when cofferdam is uneven, geomembrane stretches and energy-conservation enough better adapts to deformation, it is to avoid
Seepage prevention system pulls open formation crack.
The beneficial effects of the utility model are: attachment structure of the present utility model is simple, easy construction, investment reduction, have higher
Safety.Simplify the connected mode of geomembrane and concrete cofferdam, it is to avoid easily cause current during conventional method construction and lead to
Cross the problem that the space between geomembrane and concrete cofferdam occurs seepage.
Accompanying drawing explanation
Fig. 1 is floor map of the present utility model；
Fig. 2 is elevational schematic view of the present utility model；
Fig. 3 is the structural representation that this utility model geomembrane 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 the accompanying drawings this utility model is further described.
As shown in Figure 1 to Figure 3, a kind of seepage control for rock-earth cofferdam geomembrane and the attachment structure of concrete cofferdam, including backing plate 1, soil
Work film 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 arranged for Transverse to the flow direction, and concrete cofferdam weir body 8 is arranged for Parallel to the flow direction, earth rock cofferdam weir body 7 and coagulation
Earth cofferdam weir body 8 is connected；Being provided with geomembrane 2 near earth rock cofferdam weir body 7 axial location, geomembrane 2 is pressed by backing plate 1
Being attached to body 8 surface, concrete cofferdam weir, backing plate 1 is provided with 2 pieces, and backing plate 1 is fixed on concrete cofferdam weir by expansion bolt 6
Body 8 surface；Antiseepage transition bed course 4 has been filled in geomembrane 2 both sides, between antiseepage transition bed course 4 and concrete cofferdam weir body 8
Fill clay core bed course 3.
Geomembrane 2 is laid for folding, and is all folded with geotechnique between backing plate 1 and between backing plate 1 and concrete cofferdam weir body 8
Film 2.
Geomembrane 2 in clay core bed course 3 is provided with geomembrane and stretches joint 5.It is that geomembrane 2 is in U that geomembrane stretches joint 5
Type folds 3 layers and forms.Filling or during differential settlement when cofferdam is uneven, geomembrane stretches joint 5 and can better adapt to become
Shape, it is to avoid seepage prevention system pulls open formation crack.
This utility model a kind of seepage control for rock-earth cofferdam geomembrane and the attachment structure of concrete cofferdam to be embodied as step as follows:
(1) first having constructed concrete cofferdam weir body 8, earth rock cofferdam weir body 7 uses geomembrane 2 antiseepage, and geomembrane 2 uses
Composite geo-membrane.Successively install along with earth rock cofferdam weir body 7 successively raising during this utility model construction.
(2) electric impact drill is used to bore at concrete cofferdam weir body 8 and seepage control for rock-earth cofferdam geomembrane 2 connecting partBolt hole, spacing 10cm, guarantee body 8 surfacing of concrete cofferdam weir during boring, and install in the borehole
A set of M10 expansion bolt 6.
(3) wooden backing plate 1 is holed, the size of boring, spacing and concrete cofferdam weir body 8 are holed identical.To time with wood insole
Plate 1 plate face and edges of the periphery carry out cutting so that it is smooth, it is to avoid because geomembrane 2 is poked by injustice.
(4) geomembrane 2 is folded, make between two pieces of wooden backing plates 1, wooden backing plate 1 and concrete cofferdam weir body 8 it
Between all clip geomembrane 2.In clay core bed course 3, geomembrane 2 is provided with geomembrane stretching, extension joint 5, and it is soil that geomembrane stretches joint 5
The U-shaped folding of work film 23 layers forms.Filling or during differential settlement when cofferdam is uneven, geomembrane stretches joint 5 can be more
Adaptive deformation well, it is to avoid seepage prevention system pulls open formation crack.
(5) nut of bolt is installed, and firmly makes wooden backing plate 1 and concrete cofferdam weir body 8 fit tightly.
(6) around attachment structure, fill highly plastic clay, form clay core bed course 3；Antiseepage is filled in geomembrane 2 both sides
Cross bed course 4, clay core bed course 3 and antiseepage transition bed course 4 to raise along with earth rock cofferdam weir body 7 synchronizes successively place mat, often pad
One layer with regard to grinding compacting one layer, until it reaches earth rock cofferdam weir body 7 design height.
(7) raising along with earth rock cofferdam weir body 7, successively earth rock cofferdam bank protection 10 and the soil stone of construction earth rock cofferdam upstream side encloses
Weir bank protection bed course 9.
Claims (4)
1. seepage control for rock-earth cofferdam geomembrane and the attachment structure of concrete cofferdam, include backing plate (1), geomembrane (2), clay
Antiseepage bed course (3), antiseepage transition bed course (4), earth rock cofferdam weir body (7), concrete cofferdam weir body (8), it is characterised in that:
Described earth rock cofferdam weir body (7) is that Transverse to the flow direction is arranged, described concrete cofferdam weir body (8) is Parallel to the flow direction
Arranging, earth rock cofferdam weir body (7) is connected with concrete cofferdam weir body (8), near earth rock cofferdam weir body (7) axial location
Being provided with geomembrane (2), described geomembrane (2) overlays on body (8) surface, concrete cofferdam weir by backing plate (1), described
Backing plate (1) be provided with monolithic or polylith, backing plate (1) is fixed on body (8) surface, concrete cofferdam weir, geomembrane (2) two
Antiseepage transition bed course (4) has been filled in side, has filled clay and prevent between antiseepage transition bed course (4) and concrete cofferdam weir body (8)
Ooze bed course (3).
Seepage control for rock-earth cofferdam geomembrane the most according to claim 1 and the attachment structure of concrete cofferdam, it is characterised in that:
Described backing plate (1) is fixed on body (8) surface, concrete cofferdam weir by bolt (6).
A kind of seepage control for rock-earth cofferdam geomembrane the most according to claim 1 and the attachment structure of concrete cofferdam, its feature exists
In: when described backing plate (1) is provided with polylith, geomembrane (2) for fold lay, between different masses backing plate (1) and
Geomembrane (2) all it is folded with between backing plate (1) and concrete cofferdam weir body (8).
Seepage control for rock-earth cofferdam geomembrane the most according to claim 3 and the attachment structure of concrete cofferdam, it is characterised in that:
The described geomembrane (2) in clay core bed course (3) is provided with geomembrane and stretches joint (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620060955.0U CN205530306U (en) | 2016-01-21 | 2016-01-21 | Earth rock cofferdam prevention of seepage geomembrane and concrete cofferdam's connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620060955.0U CN205530306U (en) | 2016-01-21 | 2016-01-21 | Earth rock cofferdam prevention of seepage geomembrane and concrete cofferdam's connection structure |
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| Publication Number | Publication Date |
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| CN205530306U true CN205530306U (en) | 2016-08-31 |
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| CN201620060955.0U Active CN205530306U (en) | 2016-01-21 | 2016-01-21 | Earth rock cofferdam prevention of seepage geomembrane and concrete cofferdam's connection structure |
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| CN (1) | CN205530306U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544570A (en) * | 2016-01-21 | 2016-05-04 | 浙江省水利水电勘测设计院 | Connecting structure for earth rock cofferdam seepage-proof geomembrane and concrete cofferdam |
| CN108035368A (en) * | 2017-12-07 | 2018-05-15 | 中铁二十局集团第六工程有限公司 | A kind of mud riverbed combined cofferdam and its construction method |
-
2016
- 2016-01-21 CN CN201620060955.0U patent/CN205530306U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544570A (en) * | 2016-01-21 | 2016-05-04 | 浙江省水利水电勘测设计院 | Connecting structure for earth rock cofferdam seepage-proof geomembrane and concrete cofferdam |
| CN108035368A (en) * | 2017-12-07 | 2018-05-15 | 中铁二十局集团第六工程有限公司 | A kind of mud riverbed combined cofferdam and its construction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |