CN207405596U - Suitable for the spillway combined energy dissipation structure of narrow river bed - Google Patents
Suitable for the spillway combined energy dissipation structure of narrow river bed Download PDFInfo
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- CN207405596U CN207405596U CN201721359891.5U CN201721359891U CN207405596U CN 207405596 U CN207405596 U CN 207405596U CN 201721359891 U CN201721359891 U CN 201721359891U CN 207405596 U CN207405596 U CN 207405596U
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- spillway
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- energy dissipation
- defrlector bucket
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Abstract
The utility model discloses a kind of spillway combined energy dissipation structures suitable for narrow river bed, and including the flood discharging groove being made of bottom plate and abutment wall and the defrlector bucket for being horizontally set on flood discharge trough floor end, the upper surface of the defrlector bucket bottom wall is arcwall face；In the flood discharge trough floor multistage energy dissipating step has been set up from its bottom.The utility model advantage is to set on energy dissipating step and defrlector bucket joint, the energy of rupture of the current flowed out from defrlector bucket is down in specified range, reduce flood discharging groove end current choose away from and scour hole depth, suitable for narrow and small riverbed, particularly width be below 50m riverbed；Effect of energy dissipation is good, reduces lower influence of the stream to flood discharging groove itself and surrounding building that sluice, has saved construction cost.
Description
Technical field
The utility model is related to spillway energy-dissipating structures, combine more particularly, to a kind of spillway suitable for narrow river bed and disappear
It can structure.
Background technology
In hydraulic engineering, since the flow energy flowed out from Flood Design Discharge for Spillway slot is larger, the scouring force that riverbed is subject to compared with
Greatly, it is very big to riverbed and its surrounding environment influence.Therefore, need to energy-dissipating installation be set in Flood Design Discharge for Spillway slot or exit, reduces
Outlet stream energy mitigates current and river is washed away, protects the building of river two sides.The energy dissipation measure of spillway mainly has
Two kinds of defrlector bucket and underflow stilling basin.During using defrlector bucket energy dissipating, defrlector bucket chooses current to aerial, makes dispersion of flow
And large quantity of air is mixed, underwater bed water cushion is later fallen into, the overflow chosen downstream washes away river bed water pad and forms punching hole, therefore needs
Larger arrangement space；During using energy dissipation by hydraulic jump, the projected depth of stiling basin compared with it is deep, length is larger, not only increase construction volume（I.e.
Amount of excavation）, excavation slope height is higher, construction cost is high, long construction period, it is also desirable to certain arrangement space.Therefore, use
Above-mentioned technical proposal cannot meet the energy dissipating demand of narrow river bed.How to design that a kind of arrangement space is small, effect of energy dissipation is good, to two
Bank effect on building is smaller and is suitable for the major issue that the spillway energy-dissipating installation of narrow river bed is those skilled in the art's research.
The content of the invention
The purpose of this utility model is to provide a kind of spillway combined energy dissipation structures suitable for narrow river bed, this, which is combined, disappears
Energy structure reduces construction cost, shortens construction period while effect of energy dissipation is ensured, is exported especially suitable for spillway
Place river valley is narrow, two sides are there are building and to washing away and excavating sensitive riverbed.
To achieve the above object, the utility model takes following technical proposals：
Spillway combined energy dissipation structure described in the utility model suitable for narrow river bed, including what is be made of bottom plate and abutment wall
Flood discharging groove and the defrlector bucket for being horizontally set on flood discharge trough floor end, the upper surface of the defrlector bucket bottom wall is arcwall face；
In the flood discharge trough floor multistage energy dissipating step has been set up from its bottom.
The length of the defrlector bucket is 10~15m, the radius of bottom wall arcwall face is 15~20m, central angle be 20 °~
30°。
The utility model advantage is to set on energy dissipating step and defrlector bucket joint, makes the current flowed out from defrlector bucket
Energy of rupture be down in specified range, reduce flood discharging groove end current choose away from and scour hole depth, especially suitable for narrow and small river
Bed（I.e. width is the riverbed of below 50m）；Effect of energy dissipation is good, reduces the lower stream that sluices to flood discharging groove itself and surrounding building
It influences, has saved construction cost.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
As shown in Figure 1, the utility model is suitable for the spillway combined energy dissipation structure of narrow river bed, including by bottom plate 1 and side
The flood discharging groove and be horizontally set on 1 end of flood discharge trough floor, the defrlector bucket 3 that length is 10~15m that wall 2 is formed, defrlector bucket 3
The upper surface of bottom wall is arcwall face, and arc radius surface is 15~20m, central angle is 20 °~30 °；From its bottom in flood discharge trough floor 1
Portion has set up multistage energy dissipating step 4.
During practice of construction, height, width and number of steps per rank energy dissipating step 4 by water levels of upstream and downstream is poor, riverbed width and
Geology orographic condition determines；Each parameter of defrlector bucket 3 is determined by the energy dissipating situation and engineering energy dissipating demand of energy dissipating step 4.
The Specific construction step of the utility model is as follows：
The first step, according to topographic and geologic, engineering characteristic, hub site, dam type, comprehensive with factors such as condition and economic indicators
Close consider simultaneously determine spillway layout pattern, and according to engineering order and spillway class of buildings determine design of spillway,
Check, the standard of flood under dissipation and scouring operating mode and letdown flow；
Second step just intends the number of steps and size of energy dissipating step 4 in Flood Design Discharge for Spillway slot according to spillway calculation formula, and
The energy dissipation rate in flood discharging groove under each feature operating mode of spillway is calculated according to this, then calculates the dependency structure and ruler of flood discharging groove
It is very little；
3rd step, according to the energy situation for proposing flood discharging groove exit current after energy dissipating step 4, design calculates stream nose of growing
The energy dissipation rate of bank 3, and the size of defrlector bucket 3 is calculated according to this；
4th step according to spillway layout and neighboring buildings situation, constantly adjusts 4 size of energy dissipating step and defrlector bucket 3
Dimensional parameters, until lower sluicing stream meets work arrangement demand；And pass through elevation computation and the excessive flood of physical experiments verification
Road combined energy dissipation effect.
Claims (2)
1. a kind of spillway combined energy dissipation structure suitable for narrow river bed, including by bottom plate（1）And abutment wall（2）The flood discharging groove of composition
Be horizontally set on flood discharge trough floor（1）The defrlector bucket of end（3）, it is characterised in that：The defrlector bucket（3）Bottom wall it is upper
Surface is arcwall face；The flood discharge trough floor（1）On from its bottom set up multistage energy dissipating step（4）.
2. it is suitable for the spillway combined energy dissipation structure of narrow river bed according to claim 1, it is characterised in that：It is described to choose stream nose
Bank（3）Length for 10~15m, the radius of bottom wall arcwall face is 15~20m, central angle is 20 °~30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721359891.5U CN207405596U (en) | 2017-10-21 | 2017-10-21 | Suitable for the spillway combined energy dissipation structure of narrow river bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721359891.5U CN207405596U (en) | 2017-10-21 | 2017-10-21 | Suitable for the spillway combined energy dissipation structure of narrow river bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207405596U true CN207405596U (en) | 2018-05-25 |
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ID=62320651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721359891.5U Active CN207405596U (en) | 2017-10-21 | 2017-10-21 | Suitable for the spillway combined energy dissipation structure of narrow river bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207405596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892588A (en) * | 2022-06-12 | 2022-08-12 | 中铁十四局集团第二工程有限公司 | Step-shaped flood discharge and sand discharge model test device and test method |
-
2017
- 2017-10-21 CN CN201721359891.5U patent/CN207405596U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892588A (en) * | 2022-06-12 | 2022-08-12 | 中铁十四局集团第二工程有限公司 | Step-shaped flood discharge and sand discharge model test device and test method |
| CN114892588B (en) * | 2022-06-12 | 2023-10-13 | 中铁十四局集团第二工程有限公司 | Step-shaped flood discharge and sand discharge model test device and test method |
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Address after: 450003 No. 109 Jinshui Road, Jinshui District, Henan, Zhengzhou Patentee after: Yellow River Survey Planning and Design Research Institute Co., Ltd. Address before: 450003 No. 109 Jinshui Road, Jinshui District, Henan, Zhengzhou Patentee before: Yellow River Engineering Consulting Co., Ltd. |