CN101294378B - A flood discharge steep trough equipped with water flow counteracting energy dissipating sill - Google Patents
A flood discharge steep trough equipped with water flow counteracting energy dissipating sill Download PDFInfo
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- CN101294378B CN101294378B CN2008100447541A CN200810044754A CN101294378B CN 101294378 B CN101294378 B CN 101294378B CN 2008100447541 A CN2008100447541 A CN 2008100447541A CN 200810044754 A CN200810044754 A CN 200810044754A CN 101294378 B CN101294378 B CN 101294378B
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- water flow
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- flood discharge
- sill
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 5
- 238000009991 scouring Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
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Abstract
本发明公开的一种设置有水流对冲消能消力坎的泄洪陡槽，其特征在于该泄洪陡槽中沿水平方向设置有至少一道呈波折状的消力坎，且消力坎的高度低于收缩水深，靠近上游部分的高度小于位于下游部分的高度。由于本发明设计的泄洪陡槽中带有波折状的消力坎，因而可以改变陡槽中水流的流动方向和促进水流挑流，并利用水流自身的能量，再借用空气中的阻力，使下泄的水流在空中对冲碰撞，从而达到消能的效果，以减小泄洪道下游的消能压力和冲刷。本发明的设计不仅拓展了泄洪陡槽的适应范围，还特别适用于泄洪陡槽下游地基节理多，抗冲刷能量弱的工程。
The present invention discloses a flood discharge steep trough equipped with water flow counteracting energy dissipation sills, which is characterized in that at least one wave-shaped sill is arranged in the horizontal direction in the flood discharge sloping sill, and the height of the sills is low Due to the shrinkage water depth, the height near the upstream part is smaller than the height of the downstream part. Since the flood discharge steep trough designed by the present invention has a wave-shaped stilling sill, the flow direction of the water flow in the steep trough can be changed and the water flow can be promoted, and the energy of the water flow itself and the resistance in the air can be used to make the water discharge The water flow collides in the air, so as to achieve the effect of energy dissipation, so as to reduce the energy dissipation pressure and scour downstream of the spillway. The design of the invention not only expands the scope of application of the steep flood trough, but is also particularly suitable for projects with many foundation joints and weak anti-scouring energy downstream of the steep flood trough.
Description
Technical field
The invention belongs to the flood discharge chute technical field of band energy-dissipating installation, be specifically related to a kind of current disappear flood discharge chute of power bank of energy dissipating that liquidates that is provided with.
Background technology
The barrage of building in hydraulic engineering is no matter be that the interception current are used for generating electricity; still tackling the current retaining is used for supplying water, irrigating; all must consider needs when flood comes the exhaustless water yield is carried out the technical measures that wash with watercolours is let out, with the safety of protection power station and reservoir building.It is exactly flood releasing structures such as flood discharging groove, flood discharging tunnel, sluice that these technical measures are embodied in the hydraulic engineering.
In these flood releasing structures, the flood discharge chute is that the reservoir area wash with watercolours is let out unnecessary current a kind of flood releasing structure commonly used.Owing to all multifactor favors that enjoys such as it is built easily, construction cost economy, convenient managements.Even so, but the flood discharge chute requires the chute downstream that good geological conditions will be arranged, thereby in the utilization of flood discharge chute except considering that it should possess enough discharge capacities, also to guarantee its during operation self and to the safety of adjacent structure, and the stream that sluices properly is connected with former streamflow, the energy of stream self of avoiding down sluicing forms excessive impact to the river course, and the safety of barrage dam body and adjacent structure is constituted a threat to.So bad when the geological conditions in bottom land downstream, often be restricted in the design, thereby the energy dissipating of flood discharge chute is the critical bottleneck that the flood discharge chute can be widely used.
Summary of the invention
The objective of the invention is to be intended to solve the energy dissipating of flood discharge chute, and a kind of current disappear flood discharge chute of power bank of energy dissipating that liquidates that is provided with is provided, think that it can extensive use open bottleneck in the water construction thing.
Be a kind of current the disappear flood discharge chute of power bank of energy dissipating that liquidates that is provided with that reaches that the object of the invention provides, it is characterized in that along continuous straight runs is provided with the power that the disappears bank that is the setback shape at least together in this flood discharge chute, and the height of the power that disappears bank must be lower than the flood discharge chute depth of water, the current that so just can remain in the chute are torrent, thereby guarantee that current can arrive in the air in flip shot, reach best effect of energy dissipation
This power that disappears bank short, that be the setback shape is set in the flood discharge chute, the one, can cause the partial water flow resistance; The 2nd, can utilize the resistance of air with the current flip shot to aerial, eliminate the kinetic energy of current; The 3rd, the setback shape that utilizes the power bank arrangement that disappears is to change the direction of current, thereby utilize the energy of current self, the stream that sluices is aloft liquidated bump each other, reduce because high water level to the energy that the flow rate of water flow difference that low water stage produced is produced, reaches the effect of energy dissipating.
If the flood discharge chute is very long, generally speaking the energy that will eliminate will be big more, for satisfying the requirement of energy dissipating, the multiple tracks power bank that disappears can be set as required in chute.
In addition, more abundant for the current that guarantee flip shot collision, the setback shape that is that is provided with in the flood discharge chute provided by the invention disappears in the power bank height near upstream portion less than the height that is positioned at the downstream part.
The present invention has the following advantages:
1, owing to has the power that the disappears bank of setback shape in the flood discharge chute of the present invention's design, thereby can change the flow direction of current in the chute and promote current to choose stream, and utilize the energy of current self, relend and use airborne resistance, make down the current of the letting out collision that liquidates aloft, thereby reach the effect of energy dissipating, with the energy dissipating pressure that reduces the flood-relief channel downstream with wash away.
2, the power bank can increase the cross-section of river of current in the flood discharge chute because the setback shape of the present invention's design disappears, thereby can further reduce flow rate of water flow, reaches the effect of energy dissipation of chute.
3, the accommodation of flood discharge chute has not only been expanded in design of the present invention, and downstream the base pitch reason is many also to be specially adapted to the flood discharge chute, the engineering that the antiscour energy is weak.
Description of drawings
Fig. 1 is a main TV structure schematic diagram of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to the sectional structure schematic diagram;
Fig. 3 is the enlarged drawing of the power bank that disappears among Fig. 2.
The specific embodiment
Providing embodiment below in conjunction with accompanying drawing further specifies so that the present invention is made; but given embodiment can not be interpreted as limiting the scope of the invention, thereby nonessential improvement and adjustment that the professional and technical personnel has done according to the content and the design philosophy of the invention described above also should belong to protection scope of the present invention.
Embodiment
As shown in Figure 1, 2, present embodiment provides current the disappear flood discharge chute of power bank of energy dissipating that liquidates, be provided with the power that the disappears bank 2 that is the setback shape at least together along chute bottom surface horizontal direction in this flood discharge chute 1, present embodiment is the power that the disappears bank 2 that two roads of setting are the setback shape.The disappear height of power bank 2 of per pass should be lower than the depth of water of flood discharge chute 1, and it is near the height Z of upstream portion
1Should be less than the height Z that is positioned at the downstream part
2, see Fig. 3.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100447541A CN101294378B (en) | 2008-06-20 | 2008-06-20 | A flood discharge steep trough equipped with water flow counteracting energy dissipating sill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100447541A CN101294378B (en) | 2008-06-20 | 2008-06-20 | A flood discharge steep trough equipped with water flow counteracting energy dissipating sill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101294378A CN101294378A (en) | 2008-10-29 |
| CN101294378B true CN101294378B (en) | 2010-06-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100447541A Expired - Fee Related CN101294378B (en) | 2008-06-20 | 2008-06-20 | A flood discharge steep trough equipped with water flow counteracting energy dissipating sill |
Country Status (1)
| Country | Link |
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| CN (1) | CN101294378B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720170B (en) * | 2012-05-24 | 2014-10-15 | 四川大学 | Special stepped energy dissipater |
| CN107447719B (en) * | 2017-07-27 | 2019-05-10 | 武汉大学 | Method for eliminating cavitation erosion and vibration damage of arc gate bottom water seal and connecting parts |
| CN109082997B (en) * | 2018-07-03 | 2023-10-24 | 湖北水总水利水电建设股份有限公司 | Inter-mountain aqueduct energy dissipation device |
| CN109024492A (en) * | 2018-09-03 | 2018-12-18 | 桂林市水利电力勘测设计研究院 | Channel |
| CN113237631B (en) * | 2021-05-08 | 2021-12-21 | 中国水利水电科学研究院 | An urban water accumulation monitoring oscillation elimination structure and energy dissipation method based on bottom flow energy dissipation |
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2008
- 2008-06-20 CN CN2008100447541A patent/CN101294378B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101294378A (en) | 2008-10-29 |
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Granted publication date: 20100602 Termination date: 20130620 |