CN207891841U - A kind of flexible stop water reducing flow leakage rate at the side wall of water blocking curtain wall lower end - Google Patents
A kind of flexible stop water reducing flow leakage rate at the side wall of water blocking curtain wall lower end Download PDFInfo
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- CN207891841U CN207891841U CN201721699092.2U CN201721699092U CN207891841U CN 207891841 U CN207891841 U CN 207891841U CN 201721699092 U CN201721699092 U CN 201721699092U CN 207891841 U CN207891841 U CN 207891841U
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- water
- curtain wall
- blocking curtain
- water blocking
- side wall
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model discloses the flexible stop waters of flow leakage rate at a kind of side wall of reduction water blocking curtain wall lower end, including connects with water blocking curtain wall, shape and the matched fixed structure of water blocking curtain wall；Surface of the fixed structure far from the water blocking curtain wall and multiple flexibilities the being vertically arranged unit that blocks water are connect.The utility model structure is frivolous, is easy to construct, low cost, and can effectively reduce flow leakage at water blocking curtain wall side wall.
Description
Technical field
The utility model is related to flows at hydraulic and hydroelectric engineering field, especially a kind of reduction water blocking curtain wall lower end side wall to let out
The flexible stop water of leakage quantity.
Background technology
Water blocking curtain wall can be used for improving the temperature that sluices under large reservoir, slow down water at low temperature adverse effect, it can also be used to slow down sea
Numerous ecological engineering fields such as mouth salt water encroachment phenomenon.It can underwater operation in construction, it is not necessary to empty construction area water body, show
Work reduces construction cost.But when underwater operation, deep water underwater topography can not finely be corrected, this makes water blocking curtain wall
Gap is inevitably left between lower end side wall and landform, flow is caused to leak, influences the engineering effort of water blocking curtain wall.
How larger water blocking curtain wall size is, up to tens thousand of square meters.After the assembly of water blocking curtain wall is in place, side wall multidigit is in underwater
The position of tens meters or even up to a hundred meters depths, the prior art can not close gap under water.Therefore it need to be adopted before assembly
Measure is taken to reduce the leakage of flow at gap.
For large-scale water blocking curtain wall, operation platform is mostly the narrow long types structure such as pontoon bridge, and construction area is narrow.Water blocking curtain wall
When decentralization assembly, mostly lift.It is limited by execution conditions, is difficult to lift that volume is excessive, dress of preponderance in narrow platform
It sets, therefore is limited by execution conditions, waterproofing device must have characteristic that is frivolous, easily assembling.
The research of water blocking curtain wall is less at this stage, not yet proposes have in the industry for above-mentioned the problem of being revealed about side wall flow
The solution of effect.
Invention content
Technical problem to be solved in the utility model is, in view of the shortcomings of the prior art, it is frivolous to provide a kind of structure, is easy to
Construction, cost is relatively low, and can effectively reduce the stop water of flow leakage at water blocking curtain wall side wall.
In order to solve the above technical problems, technical solution used by the utility model is：A kind of reduction water blocking curtain wall lower end
The flexible stop water of flow leakage rate at side wall, including it is at least one it is being vertically arranged, connect with water blocking curtain wall bottom end it is soft
Property blocks water unit.
The flexibility unit that blocks water is connect by fixed structure with water blocking curtain wall bottom end, the fixed structure shape with
The water blocking curtain wall shape matching.Fixed structure can increase the structural strength of stop water.
In the utility model, the flexibility blocks water unit bottom end chinky altitude and water blocking curtain wall bottom end chinky altitude phase
Together.
By above structure, change the flaring fluidised form that water blocking curtain wall side wall is formed with landform, it is alternate to form sudden expansion-sudden contraction
Fluidised form.The fluidised form water body turbulent fluctuation is violent, flow head loss bigger.For an equal amount of gap, leakage can reduce about one
Half.
The flexibility stop water quantity is 1~5 set.Stop water quantity is more, and block-water effect is better, but blocks water knot
Structure quantity more increases, and the promotion of block-water effect is more limited, thus be set as 1~5 set it is relatively inexpensive, and can guarantee and preferably block water
Effect.
The flexibility unit that blocks water includes low permeability high-strength geotextile；Low permeability high-strength geotextile bottom end is arranged
Gravity anchor chain；The gravity anchor chain sewing is in the water penetration high-strength geotextile bottom end.Geotextiles structure is frivolous, gravity anchor chain
Geotextiles weight can be increased, prevent it from being washed open by flow.
Compared with prior art, it is had the beneficial effect that possessed by the utility model：The utility model structure is frivolous, is easy to apply
Work, low cost, and flow leakage at water blocking curtain wall side wall can be effectively reduced.
Description of the drawings
Fig. 1 is that the utility model water blocking curtain wall and stop water arrange vertical section schematic diagram；
Fig. 2 is the utility model flexibility stop water example structure figure.
Specific implementation mode
Embodiment the present embodiment relies on Guizhou clear water river third stock market water at low temperature harnessing project.Third stock market
It is the second level in the step hydropower station of 15, Wushui River mainstream, has many years regulation performance, reservoir operation scheme 475.00m maximum
Height of dam 185.5m, generating system by piloting water water inlet floor elevation 408.00m.After reservoir filling, reservoir area shows apparent temperature
Lamination, bottom storehouse water temperature are only 9.6 DEG C, and the temperature that causes to sluice under spring and summer season is less than water temperature under natural environment, to downstream fish
Oviposition breeding have an adverse effect.It, need to be on powerplant intakes for fish can be made to have suitable water temperature condition in the egg-laying season
Water blocking curtain wall, which is built, at trip about 250m improves the temperature that sluices under third stock market.Curve 2 is that water blocking curtain wall takes in power station in Fig. 1
Mouth of a river elevation is with the vertical section of lower part.
Place is built in water blocking curtain wall, underwater topography 1 is coating, complex shape.Existing engineering means are only capable of water blocking curtain
The chinky altitude of wall lower end and landform is reduced to 1m ~ 2m.According to numerical simulation calculation, in the May in temperature egg-laying season of fish reproduction,
The gap mean flow rate is about 0.42m/s, and water leakage is about 61m3/ s, unit width water leakage are about 0.84m2/s.In San Banxi
Reservoir area, bottom storehouse are water at low temperature, and the leakage of a large amount of water at low temperature has very big adverse effect to the water temperature improvement of water blocking curtain wall,
Therefore need to stop water be set in water blocking curtain wall bottom end.
Fig. 2 is the enlarged diagram of flexible stop water.The dead load is light, construction is simple, and cost is relatively low.The structure is logical
It crosses curved surface fixed structure 3 with water blocking curtain wall 2 to be connected, connection type is sewing, glued or hot weld.It is discharged in water blocking curtain wall bottom end
Mouthful downstream sets gradually 1 ~ 5 high intensity low permeability geotextiles 4, due to different engineerings main body water blocking member size not
Together, gap size is different, and hypsography is different, and the flow velocity at gap is also different, setting and water blocking of these factors to geotextiles 4
Effect will make a significant impact.Therefore the quantity of different engineering geotextiles and spacing difference are larger, it is difficult to show that relatively unifies determines
By.For now, geotextiles quantity and interval need to be obtained by numerical simulation calculation or model test.Geotextiles height regards should
Depending on locating water blocking curtain wall away from ground end landform, bottom leak gap is reduced as far as possible in principle.In geotextiles bottom end, gravity anchor is set
Chain 5 increases geotextiles weight, prevents it from being washed open by flow.Gravity anchor chain 5 is with high intensity low permeability geotextiles connection type
Sewing.
Stop water is simulated using vertical two dimensional model model, water flow inlet and outlet is pressure
Boundary, pressure difference are 0.005m heads.Only water blocking curtain wall, when the chinky altitude 2m of curtain wall bottom end, mean flow rate is at gap
0.36m/s, discharge per unit width 0.72m2/s.Increasing upper flexible stop water in water blocking curtain wall bottom, the element number that blocks water is 3,
Horizontal distance away from curtain wall bottom end is respectively 20m, 30m and 40m, and 10m is divided between the two neighboring unit that blocks water.Stop water bottom
It holds chinky altitude identical as water blocking curtain wall bottom end chinky altitude, is 2m.According to the flow field analysis of numerical simulation result, in the structure
Place consumes most of water flow dynamic energy, and mean flow rate is reduced to 0.22m/s, discharge per unit width to be reduced to 0.44m at gap2/ s, resistance
Gear has fallen 39% leakage flow.
As it can be seen that the present embodiment block-water effect is good, there is preferable promotional value.
Claims (8)
1. a kind of flexible stop water reducing flow leakage rate at the side wall of water blocking curtain wall lower end, which is characterized in that including at least
One be vertically arranged and water blocking curtain wall（2）The flexibility of bottom end connection blocks water unit；The flexibility unit that blocks water includes water penetration
Geotextiles（4）；The water penetration geotextiles（4）Gravity anchor chain is arranged in bottom end（5）.
2. the flexible stop water according to claim 1 for reducing flow leakage rate at the side wall of water blocking curtain wall lower end, special
Sign is, the flexibility unit that blocks water passes through fixed structure（3）With the water blocking curtain wall（2）Bottom end connects.
3. the flexible stop water according to claim 2 for reducing flow leakage rate at the side wall of water blocking curtain wall lower end, special
Sign is, the fixed structure（3）Shape and the water blocking curtain wall（2）Shape matches.
4. the flexible stop water according to claim 1 for reducing flow leakage rate at the side wall of water blocking curtain wall lower end, special
Sign is, the flexibility blocks water unit bottom end chinky altitude and the water blocking curtain wall（2）Bottom end chinky altitude is identical.
5. the flexible stop water according to claim 4 for reducing flow leakage rate at the side wall of water blocking curtain wall lower end, special
Sign is that the flexibility blocks water unit bottom end chinky altitude as 2m.
6. the flexibility of flow leakage rate blocks water knot at the reduction water blocking curtain wall lower end side wall according to one of Claims 1 to 5
Structure, which is characterized in that the flexibility block water element number be 1~5.
7. the flexible stop water according to claim 6 for reducing flow leakage rate at the side wall of water blocking curtain wall lower end, special
Sign is, the gravity anchor chain（5）Sewing is in the water penetration geotextiles（4）Bottom end.
8. the flexible stop water according to claim 1 for reducing flow leakage rate at the side wall of water blocking curtain wall lower end, special
Sign is, the flexibility element number that blocks water is 3, and two neighboring flexibility blocks water and is divided into 10m between unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721699092.2U CN207891841U (en) | 2017-12-08 | 2017-12-08 | A kind of flexible stop water reducing flow leakage rate at the side wall of water blocking curtain wall lower end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721699092.2U CN207891841U (en) | 2017-12-08 | 2017-12-08 | A kind of flexible stop water reducing flow leakage rate at the side wall of water blocking curtain wall lower end |
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| Publication Number | Publication Date |
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| CN207891841U true CN207891841U (en) | 2018-09-21 |
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| CN201721699092.2U Active CN207891841U (en) | 2017-12-08 | 2017-12-08 | A kind of flexible stop water reducing flow leakage rate at the side wall of water blocking curtain wall lower end |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104076A (en) * | 2017-12-08 | 2018-06-01 | 中国电建集团中南勘测设计研究院有限公司 | A kind of flexible stop water for reducing current leakage rate at the side wall of water blocking curtain wall lower end |
| CN110820667A (en) * | 2019-09-06 | 2020-02-21 | 山东鑫天河新材料科技有限公司 | Water retaining curtain and water retaining curtain cloth based on deepwater water blocking, underwater releasing device and method |
-
2017
- 2017-12-08 CN CN201721699092.2U patent/CN207891841U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104076A (en) * | 2017-12-08 | 2018-06-01 | 中国电建集团中南勘测设计研究院有限公司 | A kind of flexible stop water for reducing current leakage rate at the side wall of water blocking curtain wall lower end |
| CN108104076B (en) * | 2017-12-08 | 2023-10-31 | 中国电建集团中南勘测设计研究院有限公司 | Flexible water blocking structure for reducing water flow leakage quantity at side wall of lower end of water blocking curtain wall |
| CN110820667A (en) * | 2019-09-06 | 2020-02-21 | 山东鑫天河新材料科技有限公司 | Water retaining curtain and water retaining curtain cloth based on deepwater water blocking, underwater releasing device and method |
| CN110820667B (en) * | 2019-09-06 | 2023-12-12 | 山东鑫天河新材料科技有限公司 | Deepwater water blocking-based water blocking curtain, device and method for releasing water bottom |
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