CN106013193A - Geomembrane cofferdam top structure and cofferdam heightening method - Google Patents
Geomembrane cofferdam top structure and cofferdam heightening method Download PDFInfo
- Publication number
- CN106013193A CN106013193A CN201610547613.6A CN201610547613A CN106013193A CN 106013193 A CN106013193 A CN 106013193A CN 201610547613 A CN201610547613 A CN 201610547613A CN 106013193 A CN106013193 A CN 106013193A
- Authority
- CN
- China
- Prior art keywords
- cofferdam
- geomembrane
- groove
- standby
- spare
- 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
Classifications
-
- 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
Abstract
The invention discloses a geomembrane cofferdam top structure used for resisting over-level flood and a cofferdam heightening method in the field of hydraulic and hydroelectric engineering. The geomembrane cofferdam top structure comprises a cofferdam body and a concrete anchoring structure arranged at the top of the cofferdam body. A groove penetrating the length direction of the whole cofferdam body is formed in the top of the anchoring concrete structure. A long enough spare geomembrane is arranged in the groove. One end of the spare geomembrane is fixed in the anchoring concrete structure and stored in the groove in a folded manner. Before flood comes, the spare geomembrane can be taken out, and then seepage-proofing bodies are adopted on the two sides of the spare geomembrane for fast heightening and pressing. Due to the fact that one end of the spare geomembrane is fixed in the original anchoring concrete structure, the seepage-proofing bodies and the spare geomembrane are fixed well after heightening. The geomembrane cofferdam top structure has the same seepage-proofing effect as that of an original cofferdam, and therefore the water retaining capacity of the whole cofferdam is increased, and the situation that when over-level flood happens, economic losses are caused due to the fact that the height of the cofferdam is not enough is avoided.
Description
Technical field
The present invention relates to Hydraulic and Hydro-Power Engineering field, particularly relate to a kind of geomembrane cofferdam top structure for resisting over-level flood and utilize this top
Portion's structure increases the method in cofferdam.
Background technology
When building Hydraulic and Hydro-Power Engineering, in order to make water conservancy project permanent construction dam can be maintained at dry construction on the ground, often through using cofferdam once
Blocking disconnected whole riverbed, downstream guided into by the water conservancy diversion outlet structure escape works outside allowing river by riverbed.Owing to earth rock cofferdam can make full use of local material, over the ground
Base strong adaptability, construction technology is simple, so the most preferentially selecting earth rock cofferdam in Practical Project, earth rock cofferdam is fine due to water penetration, needs
Carrying out Anti-seeping technology, in the seepage control measure of earth rock cofferdam, composite geo-membrane is cheap with it, and easy construction is widely used in seepage prevention of cofferdam, its
Form of construction work is to be laid on by geomembrane on Yu Shui inclined-plane, cofferdam, thus blocks river, prevents river from permeating cofferdam.But it is 3 grades or mistake for rank
4 grades of earth rock cofferdams that fruit is more serious afterwards, except strengthening inherently safe detection, outside automatic Hydrological Telemetry System is set up in reservoir area, also answer incorporation engineering special
Point does technology and economic analysis, and research uses to increase superelevation or arrange emergency spillway etc. resists the safety measure of over-level flood.
Summary of the invention
For the deficiencies such as seepage control measure difference after overcoming existing geomembrane cofferdam structure cannot resist over-level flood or increase cofferdam, skill to be solved by this invention
Art problem is: provide one can be easy to cofferdam and quickly increase, and the perfect geomembrane cofferdam top structure of seepage control measure and increase the side in cofferdam
Method.
The technical solution adopted for the present invention to solve the technical problems is: geomembrane cofferdam top structure, including weir, cofferdam body and be arranged on weir, cofferdam body
The concrete anchor fixing structure at top, the top of described anchoring xoncrete structure is provided with the groove running through body length direction, weir, whole cofferdam, in described groove
Being provided with the standby geomembrane of sufficient length, described standby geomembrane one end is fixed in anchoring xoncrete structure and stored collapsed is in described groove.
Further, it is provided with backfill fine sand in described groove and protects standby geomembrane for filling groove.
Further, the top open part of described groove is provided with cover plate.
The method utilizing this geomembrane cofferdam top structure to increase cofferdam, comprises the following steps, and first pulls out standby geomembrane from groove,
And it is at vertical or oblique tensioned state, and then stack impervious body in the both sides of standby geomembrane, finally impervious body is carried out compacting fixing, complete
In pairs cofferdam add high disposal.
The invention has the beneficial effects as follows: by the standby geomembrane of the top pre-plugged certain length at weir, cofferdam body, before flood arrives, desirable
Go out standby geomembrane, then use impervious body quickly cofferdam to be increased, owing to standby geomembrane one end is fixed on original anchoring xoncrete structure
In, so impervious body and geomembrane after increasing are fixed well, there is the anti-seepage effect identical with original cofferdam, thus add the gear in whole cofferdam
Outlet capacity, it is to avoid cause economic loss due to cofferdam insufficient height when there is over-level flood.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Being labeled as in figure, weir, 1-cofferdam body, 2-anchors xoncrete structure, 3-groove, the standby geomembrane of 4-, and 5-backfills fine sand, 6-cover plate.
Detailed description of the invention
The present invention is further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, the present invention includes weir, cofferdam body 1 and is arranged on the concrete anchor fixing structure 2 at body 1 top, weir, cofferdam, described anchoring concrete
The top of structure 2 is provided with the groove 3 running through weir, whole cofferdam body 1 length direction, is provided with the standby geomembrane 4 of sufficient length in described groove 3,
Described standby geomembrane 4 one end is fixed in anchoring xoncrete structure 2 and stored collapsed is in described groove 3.The geomembrane in common cofferdam is only on weir
Lay on the Yu Shui inclined-plane of body, be then fixed by the anchoring concrete at upper and lower two ends, if running into dangerous situation when needing cofferdam is increased,
The geomembrane at body top, weir cannot be carried out the most fixing, so good anti-seepage effect can not be accomplished, is seriously also possible to cause and increases collapsing of cofferdam.
The present invention thes improvement is that, the standby geomembrane 4 of pre-plugged one section in the anchoring xoncrete structure 2 at body 1 top, weir, original cofferdam, and it is long
Spend and choose according to local hydrologic regime, a certain degree of over-level flood can be resisted.
Owing to standby geomembrane 4 has certain thickness and elasticity, stored collapsed easily ejects in groove 3, it is possible to can be damaged, so
Be provided with in described groove 3 backfill fine sand 5 for filling groove 3, standby geomembrane 4 is embedded in groove 3, thus to its play protection make
With.
After a period of time that cofferdam constructs, owing to exposing to the sun and rain for a long time, the backfill fine sand 5 being easily caused in groove 3 hardens or by rain
Water washes away loss, and fine sand can increase certain difficulty to the engineering taking out geomembrane after hardening, it is possible at the top of the groove 3 of xoncrete structure 2
Opening part arranges cover plate 6, it is possible to standby geomembrane 4 is played more preferable protective effect.
When utilizing this geomembrane cofferdam top structure that cofferdam is increased, need to carry out according to the following steps, from groove 31, first pull out standby soil
Work film 4, and make standby geomembrane 4 be in vertical or oblique tensioned state, then the both sides heap at the standby geomembrane 4 of pull-out sets impervious body and presses
Fasten, thus effectively improve the height in cofferdam, owing to the lower end of standby geomembrane 4 is fixed in anchoring xoncrete structure 3, so after increasing
Cofferdam geomembrane stable, good seepage-proof property, and standby geomembrane 4 serves the protective effect to the impervious body after increasing the most to a certain extent,
Stabilizing it property is more preferable, improves the water-retaining capacity in whole cofferdam.
Present configuration is relatively simple, but is skillfully constructed, and improves and sets up the efficiency increasing cofferdam, and prevent by the way of pre-buried standby geomembrane
Ooze effective, Stability Analysis of Structures, increase the water-retaining capacity in cofferdam, it is to avoid the economic damage caused when there is over-level flood due to cofferdam insufficient height
Lose.
Claims (4)
1. geomembrane cofferdam top structure, including weir, cofferdam body (1) and the concrete anchor fixing structure (2) that is arranged on body (1) top, weir, cofferdam,
It is characterized in that: the top of described anchoring xoncrete structure (2) is provided with the groove (3) running through weir, whole cofferdam body (1) length direction, described groove
(3) being provided with the standby geomembrane (4) of sufficient length in, described standby geomembrane (4) one end is fixed in anchoring xoncrete structure (2) and rolls over
Fold and leave in described groove (3).
2. geomembrane cofferdam as claimed in claim 1 top structure, is characterized in that: is provided with backfill fine sand (5) in described groove (3) and is used for
Fill groove (3) and protect standby geomembrane (4).
3. geomembrane cofferdam as claimed in claim 2 top structure, is characterized in that: the top open part of described groove (3) is provided with cover plate (6).
4. the method utilizing the geomembrane cofferdam top structure described in claim 1,2 or 3 to increase cofferdam, is characterized in that, including following
Step: first pull out standby geomembrane (4) from groove (3), and be at vertical or oblique tensioned state, then in standby geomembrane (4)
Both sides stack impervious body, finally impervious body is carried out compacting fixing, completes cofferdam is added high disposal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547613.6A CN106013193A (en) | 2016-07-12 | 2016-07-12 | Geomembrane cofferdam top structure and cofferdam heightening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547613.6A CN106013193A (en) | 2016-07-12 | 2016-07-12 | Geomembrane cofferdam top structure and cofferdam heightening method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106013193A true CN106013193A (en) | 2016-10-12 |
Family
ID=57109323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610547613.6A Pending CN106013193A (en) | 2016-07-12 | 2016-07-12 | Geomembrane cofferdam top structure and cofferdam heightening method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106013193A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677980A (en) * | 2018-07-12 | 2018-10-19 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of upstream cofferdam that taking into account communication function increases method and structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1701792A1 (en) * | 1990-02-09 | 1991-12-30 | Научно-Исследовательский Институт Строительного Производства | Method for building embankment with film diaphragm |
| CN2533155Y (en) * | 2002-02-08 | 2003-01-29 | 杨学海 | Plate dam type secondary dyke |
| RU2309219C1 (en) * | 2006-03-10 | 2007-10-27 | Общество с ограниченной ответственностью "Русская инжиниринговая компания" | Earth-fill dam of frozen type |
| RU2377363C1 (en) * | 2008-07-22 | 2009-12-27 | Василий Петрович Ягин | Soil non-homogenuous fill dam |
| CN102011506A (en) * | 2010-11-23 | 2011-04-13 | 昆明理工大学 | Flood control buoyancy device for building |
| CN102966072A (en) * | 2012-11-14 | 2013-03-13 | 河海大学 | Construction method for treating widened and heightened engineering joint surfaces of dikes on soft clay foundation |
| CN205917708U (en) * | 2016-07-12 | 2017-02-01 | 中国电建集团成都勘测设计研究院有限公司 | A geomembrane cofferdam top structure for resisting flood that exceeds standard |
-
2016
- 2016-07-12 CN CN201610547613.6A patent/CN106013193A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1701792A1 (en) * | 1990-02-09 | 1991-12-30 | Научно-Исследовательский Институт Строительного Производства | Method for building embankment with film diaphragm |
| CN2533155Y (en) * | 2002-02-08 | 2003-01-29 | 杨学海 | Plate dam type secondary dyke |
| RU2309219C1 (en) * | 2006-03-10 | 2007-10-27 | Общество с ограниченной ответственностью "Русская инжиниринговая компания" | Earth-fill dam of frozen type |
| RU2377363C1 (en) * | 2008-07-22 | 2009-12-27 | Василий Петрович Ягин | Soil non-homogenuous fill dam |
| CN102011506A (en) * | 2010-11-23 | 2011-04-13 | 昆明理工大学 | Flood control buoyancy device for building |
| CN102966072A (en) * | 2012-11-14 | 2013-03-13 | 河海大学 | Construction method for treating widened and heightened engineering joint surfaces of dikes on soft clay foundation |
| CN205917708U (en) * | 2016-07-12 | 2017-02-01 | 中国电建集团成都勘测设计研究院有限公司 | A geomembrane cofferdam top structure for resisting flood that exceeds standard |
Non-Patent Citations (1)
| Title |
|---|
| 顾淦臣: "我国土石坝应用土工膜技术的新进展（续）", 《河海科技进展》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677980A (en) * | 2018-07-12 | 2018-10-19 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of upstream cofferdam that taking into account communication function increases method and structure |
| CN108677980B (en) * | 2018-07-12 | 2023-10-31 | 中国电建集团贵阳勘测设计研究院有限公司 | Upstream cofferdam heightening method and structure taking traffic function into consideration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205077453U (en) | Dam structure that panel rock -fill dam and upstream cofferdam combine | |
| CN103526724B (en) | The anchoring leakage preventing structure that a kind of reservoir bottom geomembrane is connected with storehouse week collector drain periphery fissure | |
| CN101761051B (en) | Assembled water pocket dam body | |
| CN102979061B (en) | Oblique membrane core wall earth and rockfill dam and anti-seepage body construction method thereof | |
| CN203429606U (en) | Sediment retaining bank reconstructed from temporary cofferdam | |
| CN204703179U (en) | A kind of composite geo-membrane sloping core cofferdam | |
| CN106368176B (en) | The high dam structure being built on earth material scarcity area deeply covered layer | |
| CN106149626A (en) | A kind of automatic river levee controlled flood with flood | |
| CN104314089A (en) | Method for composite geo-membrane sloping core cofferdam | |
| CN106013193A (en) | Geomembrane cofferdam top structure and cofferdam heightening method | |
| CN205917708U (en) | A geomembrane cofferdam top structure for resisting flood that exceeds standard | |
| CN105970882A (en) | Structure solving reverse osmosis water problem of dam body in construction process of concrete-faced rockfill dam and construction method thereof | |
| CN103938585A (en) | Arrangement structure of mixed dam composed of earth dams and gravity dam | |
| CN203080480U (en) | Upstream blanket structure of concrete face rockfill dam | |
| CN203096696U (en) | High and low composite backwater weir | |
| CN210636421U (en) | Underwater hollowing defect repairing device for navigation wall pile foundation of ship lock on gravel layer foundation | |
| CN105256763A (en) | Diking method based on bamboo raft frame structure | |
| CN205329632U (en) | Utilize geotechnique to fill provisional manger plate dykes and dams of irritating bag and construction of steelframe support system | |
| CN103938590A (en) | Tide sand protection dike | |
| CN207452923U (en) | Gather the seepage prevention of cofferdam structure of cut-pff wall and composite geo-membrane | |
| CN104947630A (en) | Over-current slag collecting weir for water conservancy and hydropower engineering and construction method thereof | |
| CN206667186U (en) | A kind of impervious watertight structure in Hydraulic and Hydro-Power Engineering | |
| CN205894016U (en) | Automatic river levee with flood flood control | |
| CN204849791U (en) | Structure of earth rock cofferdam prevention of seepage system | |
| CN206157755U (en) | Carry on anti - seepage prevention of dam foundation system of straining structure of double -deck level in deep overburden high dam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20161012 |