CN210288303U - Dam body sluicing energy dissipation device - Google Patents
Dam body sluicing energy dissipation device Download PDFInfo
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- CN210288303U CN210288303U CN201920644787.3U CN201920644787U CN210288303U CN 210288303 U CN210288303 U CN 210288303U CN 201920644787 U CN201920644787 U CN 201920644787U CN 210288303 U CN210288303 U CN 210288303U
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Abstract
The utility model relates to a dam body sluicing energy dissipation device, which comprises two sluicing grooves which are poured and are distributed along the axis of a dam in a bilateral symmetry way in the downstream direction of the dam body, wherein the sluicing grooves are divided into an inlet section, a groove body section and an outlet section; the body section of the water drainage tank is arranged according to a certain curvature in a bending way and gradually descends according to a certain hydraulic slope, the inlet section of the water drainage tank is arranged in the dam body, the inlet section of the water drainage tank is positioned between the normal water storage level and the dead water level of the reservoir, the inlet section is provided with a gate, and the outlet section of the water drainage tank is positioned horizontally; a plurality of support columns vertical to the trough body section are arranged below the trough body section of the drainage trough, the other ends of the support columns are poured on the dam body, and a stilling pool with a certain submerged depth is arranged right below the outlet section of the drainage trough. The structure solves the problems that the influence of the water discharge energy dissipation on the downstream dam foundation impact is large and the downstream riverbed scouring is large, is beneficial to the stability of the dam foundation, and has simple structure and convenient construction.
Description
Technical Field
The utility model relates to a dam body sluicing energy absorber belongs to hydraulic engineering technical field.
Background
With the enhancement of basic theoretical research of hydraulic engineering in China and the improvement of hydraulic engineering construction technology, a large number of water retaining dams, such as gravity dams, arch dams, buttress dams and the like, are built in various places. The energy dissipation facilities of the dam foundation and the river channel are researched and paid more and more attention, and the energy dissipation effect influences the stability of the downstream dam foundation and the ecological environment of the downstream river channel. The prior energy dissipation mode comprises bottom flow energy dissipation, surface flow energy dissipation, trajectory energy dissipation, a bucket, and the like. These energy dissipation modes have characteristics and have suitable energy dissipation conditions, and engineering application is selected according to local actual conditions. The utility model provides a dam body sluicing energy dissipater utilizes the rivers that let down to strike each other and offsets some energy, and the water falls into the further energy dissipation of absorption basin.
SUMMERY OF THE UTILITY MODEL
The utility model provides a dam body sluicing energy dissipater has solved the sluicing energy dissipation and has impacted the big problem of influence, low reaches riverbed erodeing of low reaches dam foundation impact, has alleviateed the washing away of rivers of sluicing down to low reaches dam foundation, low reaches river course, simple structure moreover, construction convenience.
In order to reduce scouring to a dam foundation and maintain the ecological environment of a downstream river channel, the utility model relates to a dam body water drainage energy dissipation device, which comprises two water drainage grooves which are poured and distributed along the axis of the dam in a bilateral symmetry manner in the downstream direction of the dam body, wherein the water drainage grooves are divided into an inlet section, a groove body section and an outlet section; the body section of the water drainage tank is arranged according to a certain curvature in a bending way and gradually descends according to a certain hydraulic slope, the inlet section of the water drainage tank is arranged in the dam body, the inlet section of the water drainage tank is positioned between the normal water storage level and the dead water level of the reservoir, the inlet section is provided with a gate, and the outlet section of the water drainage tank is positioned horizontally; a plurality of support columns vertical to the trough body section are arranged below the trough body section of the drainage trough, the other ends of the support columns are poured on the dam body, and a stilling pool with a certain submerged depth is arranged right below the outlet section of the drainage trough. The structure realizes that part of energy is offset by utilizing the mutual impact collision of the discharged water flows of the left and right water discharge grooves of the dam body, and the water flows can dissipate energy after falling into the stilling basin, thereby being beneficial to the stability of the dam foundation and reducing the scouring of turbulent water flows to downstream river channels.
The water drainage tank is positioned between the normal water storage level and the dead water level, the gate is positioned at the inlet section of the water drainage tank, and the section of the water drainage tank is U-shaped or trapezoidal;
the groove body section is arranged according to a certain curvature, a certain hydraulic slope is gradually reduced, the position of the outlet section is horizontal, the left and right outlet sections are opposite to each other, and a certain distance is reserved between the opposite outlet sections;
a stilling pool with a certain submerged depth is arranged right below the water drainage tank;
and a plurality of support columns vertical to the trough body section are arranged below the trough body section of the drainage trough, and the other ends of the support columns are poured on the dam body.
The utility model discloses a working process is:
when the reservoir needs to be sluiced, the gate is opened to enable water flow to enter the sluiced groove, the water flow is discharged from the outlet section through the inlet section and the groove body section, the gravitational potential energy of the water flow is converted into kinetic energy, the water flow of the two outlet sections are collided at a certain flow velocity, according to the principles of momentum theorem and kinetic energy theorem, the water bodies counteract a part of energy and then are aerated in the air, and the water bodies fall into the stilling pool at a certain speed and then are subjected to energy consumption in modes of rolling, aeration, collision, friction, turbulent motion diffusion and the like.
Adopt a sluicing energy absorber, have following advantage:
1. the device utilizes the mutual collision of discharged water flows to offset part of energy, and a water body falls into a stilling pool for further energy dissipation;
2. the device has small impact force on the downstream dam foundation, and reduces the scouring of turbulent water flow on the downstream river channel;
3. the device has simple structure and convenient construction.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic elevation structure of the present invention.
Fig. 2 is a schematic plan view of the position of the water discharge groove of the present invention.
FIG. 3 and FIG. 4 are schematic sectional views of the water discharge tank of the present invention
Among them are: 1. the dam comprises a dam body, 2 parts of a water drainage tank, 3 parts of a gate, 4 parts of an inlet section, 5 parts of a tank body section, 6 parts of an outlet section, 7 parts of a support body, 8 parts of a stilling pool and 9 parts of downward drainage water flow.
Detailed Description
The present application relates to the following technical features: the dam comprises a dam body 1, a water drainage tank 2, a gate 3, an inlet section 4, a tank body section 5, an outlet section 6, a support body 7, a stilling pool 8 and a water body 9.
Fig. 1, 2, 3 and 4 show a dam body drainage energy dissipater, which comprises two drainage grooves which are cast in a direction inclined to the downstream direction of a dam body and are distributed along the axis of the dam in a bilateral symmetry manner, wherein the drainage grooves are divided into an inlet section, a groove body section and an outlet section; the body section of the water drainage tank is arranged according to a certain curvature in a bending way and gradually descends according to a certain hydraulic slope, the inlet section of the water drainage tank is arranged in the dam body, the inlet section of the water drainage tank is positioned between the normal water storage level and the dead water level of the reservoir, the inlet section is provided with a gate, and the outlet section of the water drainage tank is positioned horizontally; a plurality of support columns vertical to the trough body section are arranged below the trough body section of the drainage trough, the other ends of the support columns are poured on the dam body, and a stilling pool with a certain submerged depth is arranged right below the outlet section of the drainage trough. The structure realizes that part of energy is offset by utilizing the mutual impact collision of the discharged water flows of the left and right water discharge grooves of the dam body, and the water flows can dissipate energy after falling into the stilling basin, thereby being beneficial to the stability of the dam foundation and reducing the scouring of turbulent water flows to downstream river channels.
The water drainage tank is positioned between the normal water storage level and the dead water level, the gate is positioned at the inlet section of the water drainage tank, and the section of the water drainage tank is U-shaped or trapezoidal;
the groove body section is arranged according to a certain curvature, a certain hydraulic slope is gradually reduced, the position of the outlet section is horizontal, the left and right outlet sections are opposite to each other, and a certain distance is reserved between the opposite outlet sections;
a stilling pool with a certain submerged depth is arranged right below the water drainage tank;
and a plurality of support columns vertical to the trough body section are arranged below the trough body section of the drainage trough, and the other ends of the support columns are poured on the dam body.
The utility model discloses a working process is:
when the reservoir needs to be sluiced, the gate is opened to enable water flow to enter the sluiced groove, the water flow is discharged from the outlet section through the inlet section and the groove body section, the gravitational potential energy of the water flow is converted into kinetic energy, the water flow of the two outlet sections are collided at a certain flow velocity, according to the principles of momentum theorem and kinetic energy theorem, the water bodies counteract a part of energy and then are aerated in the air, and the water bodies fall into the stilling pool at a certain speed and then are subjected to energy consumption in modes of rolling, aeration, collision, friction, turbulent motion diffusion and the like.
Technical features not described in detail in the present application are prior art. The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present disclosure be covered by the claims of the present application.
Claims (3)
1. The utility model provides a dam body sluicing energy absorber which characterized in that: the method comprises the following steps of pouring two drainage grooves which are distributed along the axis of a dam in a bilateral symmetry manner in the downstream direction of the dam body, wherein the drainage grooves are divided into an inlet section, a groove body section and an outlet section; the body section of the water drainage tank is arranged according to a certain curvature in a bending way and gradually descends according to a certain hydraulic slope, the inlet section of the water drainage tank is arranged in the dam body, the inlet section of the water drainage tank is positioned between the normal water storage level and the dead water level of the reservoir, the inlet section is provided with a gate, and the outlet section of the water drainage tank is positioned horizontally; a plurality of support columns vertical to the trough body section are arranged below the trough body section of the drainage trough, the other ends of the support columns are poured on the dam body, and a stilling pool with a certain submerged depth is arranged right below the outlet section of the drainage trough.
2. A water drainage energy dissipater as claimed in claim 1, wherein: the section of the water drainage groove is U-shaped or trapezoidal.
3. A water drainage energy dissipater as claimed in claim 1, wherein: the outlet sections are right and left opposite to each other, and a certain distance is reserved between the opposite outlet sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920644787.3U CN210288303U (en) | 2019-05-04 | 2019-05-04 | Dam body sluicing energy dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920644787.3U CN210288303U (en) | 2019-05-04 | 2019-05-04 | Dam body sluicing energy dissipation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210288303U true CN210288303U (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920644787.3U Expired - Fee Related CN210288303U (en) | 2019-05-04 | 2019-05-04 | Dam body sluicing energy dissipation device |
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| Country | Link |
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| CN (1) | CN210288303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523179A (en) * | 2020-12-10 | 2021-03-19 | 王凯航 | Flood discharge device for water conservancy flood control engineering and use method |
| WO2022011567A1 (en) * | 2020-07-14 | 2022-01-20 | 嘉兴金喜莱科技有限公司 | Anti-impact dual-cavity impact-mitigation-type dissipation structure for bridge project and design method |
-
2019
- 2019-05-04 CN CN201920644787.3U patent/CN210288303U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022011567A1 (en) * | 2020-07-14 | 2022-01-20 | 嘉兴金喜莱科技有限公司 | Anti-impact dual-cavity impact-mitigation-type dissipation structure for bridge project and design method |
| CN112523179A (en) * | 2020-12-10 | 2021-03-19 | 王凯航 | Flood discharge device for water conservancy flood control engineering and use method |
| CN112523179B (en) * | 2020-12-10 | 2022-03-15 | 王凯航 | Flood discharge device for water conservancy flood control engineering and use method |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 Termination date: 20210504 |