CN208183679U - A kind of underflow energy dissipation structure - Google Patents
A kind of underflow energy dissipation structure Download PDFInfo
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- CN208183679U CN208183679U CN201820259566.XU CN201820259566U CN208183679U CN 208183679 U CN208183679 U CN 208183679U CN 201820259566 U CN201820259566 U CN 201820259566U CN 208183679 U CN208183679 U CN 208183679U
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- underflow
- dissipation structure
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Abstract
The utility model is a kind of underflow energy dissipation structure.It include slope diffuser, sudden expansion section, beginning energy dissipating section, turnaround section, end energy dissipating section, changeover portion, wherein slope diffuser is spread since beginning, diffuser front end is equipped with sudden expansion section, sudden expansion section connects turnaround section, and one section straight section is respectively arranged before and after turnaround section according to landform, straight section is beginning energy dissipating section and end energy dissipating section, and end energy dissipating section connects changeover portion.The underflow energy dissipation structure of the utility model uses the structure of bend stilling pond, it is the improvement structure that will be let out after slot turning and underflow energy dissipation combination, in narrow terrain, it avoids trajectory nappe and directly washes away the energy dissipating of bank slope and atomization flow to the long lasting effect of adjacent building, suitable for the high flow rate water flow at extreme terrain.
Description
Technical field
It is especially a kind of for being limited in hydraulic engineering by narrow landform the utility model relates to a kind of underflow energy dissipation structure
Underflow energy dissipation structure in the tunnel of system, belongs to the innovative technology of underflow energy dissipation structure.
Background technique
The common energy dissipation type of hydraulic engineering chooses the forms such as stream, underflow and surface current, and the mostly use of sluicing tunnel chooses stream and disappears
Energy, followed by energy dissipation by hydraulic jump.When outlet elevation is higher than or close to the level of tail water, and landform, geological conditions allow, using expansion
It is both economical rationally to dissipate formula flip trajectory bucket, this energy dissipation type is widely used in domestic and international flood discharge, sand discharge tunnel.When tunnel and river
When angle is smaller, beveling defrlector bucket also can be used, bank slope is washed away with mitigating.When outlet elevation is close to the level of tail water,
Also the underflow energy dissipation by hydraulic jump after diffusion can be used.Water flows through horizontal proliferation section, then continues laterally to expand by curve diffuser, slope section
Enter stilling pond after dissipating.This energy dissipation type energy dissipating is relatively more abundant, steady, but general excavated volume is larger, and the construction time is longer,
Material utilization amount is more, and cost is higher.It is conventional but when encountering extreme terrain (such as downstream river course narrow, exist compared with mitre etc.)
Energy dissipation type is just difficult to reach effect of energy dissipation.
Summary of the invention
The purpose of this utility model is that considering the above problem and providing a kind of underflow energy dissipation structure, the utility model is kept away
Exempt from trajectory nappe and directly washes away bank slope and atomization flow to the long lasting effect of adjacent building, suitable for the height at extreme terrain
The energy dissipating of flow velocity water flow is that a kind of structure is simple, convenient and practical underflow energy dissipation structure.
The technical solution of the utility model is: the underflow energy dissipation structure of the utility model, includes slope diffuser, prominent
Expand section, beginning energy dissipating section, turnaround section, end energy dissipating section, changeover portion, wherein slope diffuser is spread since beginning, diffuser
Front end is equipped with sudden expansion section, and sudden expansion section connects turnaround section, and respectively arranges one section straight section, straight section before and after turnaround section according to landform
It is beginning energy dissipating section and end energy dissipating section, end energy dissipating section connects changeover portion.
The underflow energy dissipation structure of the utility model use bend stilling pond structure, be will let out slot turning and underflow type disappear
Improvement structure after capable of combining avoids trajectory nappe and directly washes away bank slope and atomization flow to neighbouring in narrow terrain
The long lasting effect of building, suitable for the energy dissipating of the high flow rate water flow at extreme terrain, curve type stilling pond is in large and medium-sized water at present
Rarely has utilization in sharp engineering.The utility model is that a kind of structure is simple, convenient and practical underflow energy dissipation structure.
Detailed description of the invention
Fig. 1 is the plan view of the utility model；
Fig. 2 is longitudinally arranged schematic diagram for the utility model.
Specific embodiment
Embodiment:
The structural schematic diagram of the utility model is as shown in Figure 1, 2, and the underflow energy dissipation structure of the utility model includes oblique
Slope diffuser 1, sudden expansion section 2, beginning energy dissipating section 3, turnaround section 4, end energy dissipating section 5, changeover portion 6, wherein slope diffuser 1 is from the beginning
End starts to spread, and diffuser front end sets sudden expansion section 2, and sudden expansion section 2 connects turnaround section 4, and according to landform in the 4 each cloth in front and back of turnaround section
One section straight section is set, straight section is beginning energy dissipating section 3 and end energy dissipating section 5, and end energy dissipating section 5 connects changeover portion 6.
In the present embodiment, above-mentioned 1 extent of horizontal projection L1=48m of diffuser, using C25 globality U-type groove structure, side wall is thick
1.0m.3 ° of diffusion angle, 3.5~8.5m of clear span.
Above-mentioned 2~5 sections of side walls use C25 pH-static method structure, barricade always high 13m, wall top average thickness 2.0m；
Base plate thickness 1.0m, 12.5~20m of width.
In the present embodiment, above-mentioned sudden expansion section 2 widens 4.0m to the left.3 overall length L2 of above-mentioned sudden expansion section 2 and beginning energy dissipating section=
35m, mean breadth 15m.Turning radius R=200m of above-mentioned turnaround section 4,3=10m of average length L.Above-mentioned end energy dissipating section 5 is flat
Long L4=18m, clear span 20m.Above-mentioned changeover portion 6 is L5=20m long, mean breadth 20m, and end connects underwater bed, and two sides use
Gravity Retaining Wall structure, the high 4.0~2.0m of barricade.The slope slope ratio 1:3.75 of above-mentioned slope diffuser 1, bottom plate thickness 2.0m.
In the present embodiment, the junction of above-mentioned 1 end of slope diffuser and beginning energy dissipating section 3 is that 3.0m high falls bank, is increased
Effect of energy dissipation.Energy dissipater is segmented according to 10~20m long arrangement 20mm parting.
The utility model uses the underflow energy dissipation structure comprising bend, and diffuser is U-type groove, and stilling pond abutment wall is weight
Formula barrier wall structure.Slope diffuser is used to be spread with 3 ° of angles, expands flow width to greatest extent, and dispersing water flow energy increases
Into the energy dissipating efficiency after stilling pond.Beginning energy dissipating section water flow slows down water flow and directly impacts turning to the preliminary energy dissipating of incident water flow
Section abutment wall, is reduced excessive.Stilling pond is straight with river after having turned, and water flow is relatively steady.The utility model structure uses curved road type
Underflow stilling basin structure, have many advantages, such as land occupation less, energy dissipating sufficiently, influence smaller during operation, be suitable in narrow terrain
Energy dissipating construction.
The bend underflow energy dissipation structure of the utility model solves the flood-discharge tunnel Energy Dissipator Design in narrow terrain,
It avoids simultaneously and chooses manifold formula and directly wash away bank slope and atomization flow to the long lasting effect of adjacent building.
Claims (9)
1. a kind of underflow energy dissipation structure, it is characterised in that include slope diffuser, sudden expansion section, beginning energy dissipating section, turnaround section,
End energy dissipating section, changeover portion, wherein slope diffuser is spread since beginning, and diffuser front end is equipped with sudden expansion section, sudden expansion Duan Lian
Switch through curved segment, and respectively arrange one section straight section before and after turnaround section according to landform, straight section is beginning energy dissipating section and end energy dissipating
Section, end energy dissipating section connect changeover portion.
2. underflow energy dissipation structure according to claim 1, it is characterised in that above-mentioned diffusion segment length 50m, using C25 entirety
Property U-type groove structure, side wall thickness 1.0m, 3 ° of diffusion angle, 3.5~8.5mm of width.
3. underflow energy dissipation structure according to claim 1, it is characterised in that the broadening 4.0m of above-mentioned sudden expansion section.
4. underflow energy dissipation structure according to claim 2, it is characterised in that above-mentioned sudden expansion section beginning energy dissipating segment length 35m,
Mean breadth 15m.
5. underflow energy dissipation structure according to claim 1, it is characterised in that turning radius R=200m of above-mentioned turnaround section,
Long 10m.
6. underflow energy dissipation structure according to claim 1, it is characterised in that the clear span 20m of above-mentioned end energy dissipating section, it is long
18m。
7. underflow energy dissipation structure according to claim 1, it is characterised in that the width of above-mentioned changeover portion is 20m, connection
Lower reache.
8. underflow energy dissipation structure according to any one of claims 1 to 7, it is characterised in that above-mentioned slope diffuser it is oblique
Slope slope ratio 1:3.75, bottom plate thickness 2.0m.
9. underflow energy dissipation structure according to claim 8, it is characterised in that above-mentioned slope diffuser end disappears with beginning
The junction of energy section is that 3.0m high falls bank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820259566.XU CN208183679U (en) | 2018-02-15 | 2018-02-15 | A kind of underflow energy dissipation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820259566.XU CN208183679U (en) | 2018-02-15 | 2018-02-15 | A kind of underflow energy dissipation structure |
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| CN208183679U true CN208183679U (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820259566.XU Expired - Fee Related CN208183679U (en) | 2018-02-15 | 2018-02-15 | A kind of underflow energy dissipation structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960571A (en) * | 2022-06-13 | 2022-08-30 | 中国电建集团中南勘测设计研究院有限公司 | Pressure water delivery pipeline bend sudden-expansion structure of pumped storage power station |
| CN115726330A (en) * | 2022-11-29 | 2023-03-03 | 四川大学 | Bow-shaped internally-tangent aerator |
-
2018
- 2018-02-15 CN CN201820259566.XU patent/CN208183679U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960571A (en) * | 2022-06-13 | 2022-08-30 | 中国电建集团中南勘测设计研究院有限公司 | Pressure water delivery pipeline bend sudden-expansion structure of pumped storage power station |
| CN115726330A (en) * | 2022-11-29 | 2023-03-03 | 四川大学 | Bow-shaped internally-tangent aerator |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 526040 Room 1901-1909, First Stage of Agile Plaza, 83 District, West Side of Xin'an Road, Duanzhou District, Zhaoqing City, Guangdong Province Patentee after: GUANGDONG ZHONGHAO SURVEY AND DESIGN CONSULTING Co.,Ltd. Address before: 526040 Room 1901-1909, First Stage of Agile Plaza, 83 District, West Side of Xin'an Road, Duanzhou District, Zhaoqing City, Guangdong Province Patentee before: ZHAOQING WATER RESOURCES AND HYDROPOWER SURVEY AND DESIGN INSTITUTE CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181204 Termination date: 20220215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |