CN205917708U - A geomembrane cofferdam top structure for resisting flood that exceeds standard - Google Patents
A geomembrane cofferdam top structure for resisting flood that exceeds standard Download PDFInfo
- Publication number
- CN205917708U CN205917708U CN201620730091.9U CN201620730091U CN205917708U CN 205917708 U CN205917708 U CN 205917708U CN 201620730091 U CN201620730091 U CN 201620730091U CN 205917708 U CN205917708 U CN 205917708U
- Authority
- CN
- China
- Prior art keywords
- cofferdam
- geomembrane
- reserve
- flood
- weir body
- 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.)
- Active
Links
Landscapes
- Revetment (AREA)
Abstract
The utility model discloses a geomembrane cofferdam top structure for resisting flood that exceeds standard in hydraulic and hydroelectric engineering field, including the cofferdam weir body and the anchor concrete structure of setting at cofferdam weir body top, anchor concrete structure's top is equipped with the recess that runs through whole cofferdam weir body length direction, be equipped with the reserve geomembrane of enough length in the recess, reserve geomembrane one end is fixed in anchor concrete structure and folding leaving in in the recess, before the flood arrives, can take out reserve geomembrane, then adopt the prevention of seepage body to increase fast and compress tightly in reserve geomembrane both sides, because reserve geomembrane one end is fixed in original anchor concrete structure, so the body of the prevention of seepage after increasing and reserve geomembrane are fixed good, have the prevention of seepage effect the same with original cofferdam to increased the manger plate ability in whole cofferdam, avoided causing economic loss because the cofferdam height is not enough when taking place to exceed standard the flood.
Description
Technical field
This utility model is related to Hydraulic and Hydro-Power Engineering field, and more particularly, to a kind of geomembrane for resisting over-level flood encloses
Weir top structure.
Background technology
When building Hydraulic and Hydro-Power Engineering, in order that water conservancy project permanent construction dam can be maintained at dry construction on the ground, past
Toward by disconnected whole riverbed is once blocked using cofferdam, allow river by riverbed outside water conservancy diversion outlet structure escape works guide downstream into.Due to
Earth rock cofferdam can make full use of local material, and to ground strong adaptability, construction technology is simple, thus usually excellent in Practical Project
First select earth rock cofferdam, earth rock cofferdam due to water penetration very well, needs to carry out Anti-seeping technology, in the seepage control measure of earth rock cofferdam
In, composite geo-membrane is cheap with it, and easy construction is widely used in seepage prevention of cofferdam, and its form of construction work is to lay geomembrane
On the Yu Shui inclined-plane of cofferdam, thus blocking river, prevent river infiltration cofferdam.But for rank be 3 grades or accident consequence tighter
4 grades of earth rock cofferdams of weight, except strengthening inherently safe detection, set up outside automatic Hydrological Telemetry System in reservoir area, also answer incorporation engineering
Feature does technology and economic analysis, and research is arranged using the safety that increase superelevation or setting emergency spillway etc. resist over-level flood
Apply.
Utility model content
For overcoming existing geomembrane cofferdam structure cannot resist over-level flood or increasing the deficiency such as seepage control measure difference behind cofferdam,
Technical problem to be solved in the utility model is: provides one kind can be easy to cofferdam and quickly increases, and seepage control measure is perfect
Geotechnological film cofferdam top structure.
This utility model solves its technical problem and be the technical scheme is that to enclose for the geomembrane resisting over-level flood
Weir top structure, including cofferdam weir body and the anchoring xoncrete structure being arranged on cofferdam Yan Ti top, described anchoring concrete knot
The top of structure is provided with the groove running through whole cofferdam weir body length direction, is provided with the standby geotechnique of sufficient length in described groove
Film, described standby geomembrane one end is fixed in anchoring xoncrete structure and stored collapsed is in described groove.
It is further to be provided with backfill fine sand in described groove and be used for filling the groove standby geomembrane of protection.
It is further that the top open part of described groove is provided with cover plate.
The beneficial effects of the utility model are: by the standby geotechnique of the top pre-plugged certain length in cofferdam weir body
Film, before flood arrives, be can be taken off standby geomembrane, then quickly cofferdam is increased using impervious body, due to standby soil
Work film one end is fixed in original anchoring xoncrete structure, so the impervious body after increasing and geomembrane are fixed well, has
With original cofferdam identical anti-seepage effect, thus increased the water-retaining capacity in whole cofferdam, it is to avoid occur over-level flood when by
Cause economic loss in cofferdam insufficient height.
Brief description
Fig. 1 is this utility model structural representation.
In figure is labeled as, 1- cofferdam weir body, and 2- anchors xoncrete structure, 3- groove, the standby geomembrane of 4-, and 5- backfill is thin
Sand, 6- cover plate.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further illustrated.
As shown in figure 1, this utility model includes cofferdam weir body 1 and the anchoring concrete knot being arranged on cofferdam weir body 1 top
Structure 2, the top of described anchoring xoncrete structure 2 is provided with the groove 3 running through whole cofferdam weir body 1 length direction, in described groove 3
It is provided with the standby geomembrane 4 of sufficient length, described standby geomembrane 4 one end is fixed in anchoring xoncrete structure 2 and folds and deposits
It is placed in described groove 3.The geomembrane in common cofferdam is only laid, then by the anchor of upper and lower ends on the Yu Shui inclined-plane of weir body
Gu concrete is fixed, if run into dangerous situation and need cofferdam is increased, the geomembrane at weir body top cannot be carried out very
Good fixation, so good anti-seepage effect can not be accomplished, is seriously also possible to cause and increases collapsing of cofferdam.
Of the present utility model the improvement is that, bury in advance in the anchoring xoncrete structure 2 at original cofferdam weir body 1 top
If one section of standby geomembrane 4, its length is chosen according to local hydrologic regime, can resist a certain degree of over-level flood and be
Can.Use process of the present utility model is, when needing cofferdam is increased, first pulls out standby geomembrane 4 from groove 31,
Then the both sides heap in the standby geomembrane 4 of pull-out sets impervious body and is fixed, thus effectively improving the height in cofferdam, by
It is fixed in anchoring xoncrete structure 3 in the lower end of standby geomembrane 4, so the cofferdam geomembrane after increasing is stable, antiseepage is imitated
Really good, and standby geomembrane 4 also serves the protective effect to the impervious body after increasing to a certain extent so as to stability
More preferably, improve the water-retaining capacity in whole cofferdam.
Because standby geomembrane 4 has certain thickness and elasticity, stored collapsed easily ejects in groove 3 it is possible to meeting
Being damaged, so be provided with backfill fine sand 5 in described groove 3 to be used for filling groove 3, standby geomembrane 4 being embedded in groove 3
In, thus protective effect is played to it.
After a period of time that cofferdam constructs, due to exposing to the sun and rain for a long time, the backfill being easily caused in groove 3 is thin
Husky 5 is hardened or washed away loss by rainwater, certain difficulty can be increased to the engineering taking out geomembrane after fine sand is hardened it is possible to
In the top open part setting cover plate 6 of the groove 3 of xoncrete structure 2, standby geomembrane 4 can be played with more preferable protection and make
With.
This utility model structure is relatively simple, but is skillfully constructed, and is improve and set up by way of pre-buried standby geomembrane
Increase the efficiency in cofferdam, and good seepage-proof property, Stability Analysis of Structures, increase the water-retaining capacity in cofferdam, it is to avoid exceeded flood is occurring
The economic loss being caused due to cofferdam insufficient height during water.
Claims (3)
1. it is used for resisting the geotechnological film cofferdam top structure of over-level flood, including cofferdam weir body (1) be arranged on cofferdam weir body (1)
The anchoring xoncrete structure (2) at top, is characterized in that: the top of described anchoring xoncrete structure (2) is provided with runs through whole cofferdam
The groove (3) of weir body (1) length direction, is provided with the standby geomembrane (4) of sufficient length, described standby soil in described groove (3)
Work film (4) one end is fixed in anchoring xoncrete structure (2) and stored collapsed is in described groove (3).
2. the geotechnological film cofferdam top structure for resisting over-level flood as claimed in claim 1, is characterized in that: described groove
(3) it is provided with backfill fine sand (5) in be used for filling groove (3) the standby geomembrane of protection (4).
3. the geotechnological film cofferdam top structure for resisting over-level flood as claimed in claim 2, is characterized in that: described groove
(3) top open part is provided with cover plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620730091.9U CN205917708U (en) | 2016-07-12 | 2016-07-12 | A geomembrane cofferdam top structure for resisting flood that exceeds standard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620730091.9U CN205917708U (en) | 2016-07-12 | 2016-07-12 | A geomembrane cofferdam top structure for resisting flood that exceeds standard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205917708U true CN205917708U (en) | 2017-02-01 |
Family
ID=57875882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620730091.9U Active CN205917708U (en) | 2016-07-12 | 2016-07-12 | A geomembrane cofferdam top structure for resisting flood that exceeds standard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205917708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013193A (en) * | 2016-07-12 | 2016-10-12 | 中国电建集团成都勘测设计研究院有限公司 | Geomembrane cofferdam top structure and cofferdam heightening method |
-
2016
- 2016-07-12 CN CN201620730091.9U patent/CN205917708U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013193A (en) * | 2016-07-12 | 2016-10-12 | 中国电建集团成都勘测设计研究院有限公司 | Geomembrane cofferdam top structure and cofferdam heightening method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205077453U (en) | Dam structure that panel rock -fill dam and upstream cofferdam combine | |
| CN103510493B (en) | Low overflow dam cave depot type hydropower station | |
| CN102979061B (en) | Oblique membrane core wall earth and rockfill dam and anti-seepage body construction method thereof | |
| CN102409640A (en) | Passive-drainage emergency rescue method in case of earth-rock dam break | |
| CN105735208B (en) | Dykes and dams super standard flood flood diversion siphon pipe band group | |
| CN204703179U (en) | A kind of composite geo-membrane sloping core cofferdam | |
| CN213867863U (en) | General industrial solid waste storage and disposal site structure based on abandoned mine | |
| CN203429606U (en) | Sediment retaining bank reconstructed from temporary cofferdam | |
| CN106149626A (en) | A kind of automatic river levee controlled flood with flood | |
| CN205917708U (en) | A geomembrane cofferdam top structure for resisting flood that exceeds standard | |
| CN201165666Y (en) | Flexible netted check dam | |
| CN107761668A (en) | A kind of strand Bin Ku makes ground type bank protection structure and its construction process | |
| CN105603942B (en) | Dykes and dams super standard flood flood diversion siphon pipe band | |
| CN105970882A (en) | Structure solving reverse osmosis water problem of dam body in construction process of concrete-faced rockfill dam and construction method thereof | |
| CN209584969U (en) | A kind of water conservancy construction protective slope structure | |
| CN106013193A (en) | Geomembrane cofferdam top structure and cofferdam heightening method | |
| CN206173891U (en) | River protection is with ecological protection slope | |
| CN204000745U (en) | A kind of bulwark | |
| CN205576835U (en) | Multistage soil property flood diversion dykes and dams of bursting certainly of geosynthetic material protection | |
| CN205822132U (en) | A kind of flowing waters protective slope structure | |
| CN203096696U (en) | High and low composite backwater weir | |
| CN103938585A (en) | Arrangement structure of mixed dam composed of earth dams and gravity dam | |
| CN211898197U (en) | Water retaining structure for water conservancy and hydropower | |
| CN210122706U (en) | Check dam structure of hydraulic and hydroelectric engineering | |
| CN203080480U (en) | Upstream blanket structure of concrete face rockfill dam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |