CN215290009U - Arch bridge ridge structure for reducing fluctuation of water surface of stilling pool - Google Patents
Arch bridge ridge structure for reducing fluctuation of water surface of stilling pool Download PDFInfo
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- CN215290009U CN215290009U CN202120342321.5U CN202120342321U CN215290009U CN 215290009 U CN215290009 U CN 215290009U CN 202120342321 U CN202120342321 U CN 202120342321U CN 215290009 U CN215290009 U CN 215290009U
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Abstract
The utility model provides an arch bridge bank structure for reducing fluctuation of stilling basin surface of water, include: the device comprises a water taking hole, an arch bridge ridge, a stilling basin, a differential tail ridge and a sea wall; a row of water taking holes are formed in the upstream end of the stilling pool; an arch bridge ridge is transversely arranged at the upstream section of the stilling pool, a differential tail ridge is transversely arranged at the tail end of the stilling pool, a sea lantern is laid at the downstream of the differential tail ridge, and the sea lantern is parallel to the arch bridge ridge. The utility model discloses an arch bridge bank structure for reducing stilling pool surface of water is undulant can eliminate most energy in the rivers, improves the flow state and the homogenization velocity of flow of rivers to reduce the washing away of rivers to stilling pool end and downstream river course, its simple structure, easily construction.
Description
Technical Field
The utility model belongs to the technical field of the rivers energy dissipation, concretely relates to be used for reducing undulant arched bridge bank structure of stilling pool surface of water.
Background
In hydroelectric engineering, a water taking hole is usually arranged for satisfying irrigation and drinking water for life, and when the water retaining height of the water taking hole is larger, a culvert type is generally adopted, and underflow energy dissipation is adopted. The culvert type water taking hole orifices are more concentrated in outflow, the Freund number of outlet water flow is lower, when the traditional stilling sill is additionally arranged in the stilling pool for dissipating energy, because the flow velocity of the orifices is higher, higher water fins are easily formed, when the height of the stilling pool tail sill is increased to form submerged water jump, the fluctuation of the water surface in the stilling pool is larger and unstable, the water surface is easy to greatly fall off after the stilling pool, and therefore, the tail end of the stilling pool and a downstream river channel are easily scoured.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is an object of the present invention to provide an arch bridge sill structure for reducing fluctuation of water surface of a stilling basin, which overcomes or at least partially solves or alleviates the above problems.
The utility model provides an arch bridge bank structure for reducing fluctuation of stilling basin surface of water, include: the device comprises a water taking hole, an arch bridge ridge, a stilling basin, a differential tail ridge and a sea wall; a row of water taking holes are formed in the upstream end of the stilling pool; an arch bridge ridge is transversely arranged at the upstream section of the stilling pool, a differential tail ridge is transversely arranged at the tail end of the stilling pool, a sea lantern is laid at the downstream of the differential tail ridge, and the sea lantern is parallel to the arch bridge ridge.
The utility model discloses optional characteristic below still having.
Optionally, the bottom surface of the stilling pool is horizontal, and the elevation of the bottom surface of the stilling pool is the same as the elevation of the bottom surface of the water taking hole.
Optionally, the cross section of the opening of the water taking hole is rectangular.
Optionally, the cross section of the bottom hole of the arch bridge sill is rectangular, the top of the arch bridge sill is a horizontal plane, the upstream surface and the downstream surface are vertical surfaces, and the number of holes is the same as the number of the water taking holes and corresponds to one another.
Optionally, the width of the hole at the bottom of the arch bridge sill is 0.6-0.7 times of that of the water taking hole; the height of the bottom hole of the arch bridge sill is 0.15-0.25 time of the height of the water taking hole; the total height of the arch bridge sill is 0.6-0.7 times of the height of the water taking hole.
Optionally, the upstream surface of the differential tail sill is an upright surface, the backside surface is an inclined surface, and the elevation of the low sill in the differential tail sill is not lower than the elevation of the bottom surface of the stilling pool.
Optionally, the top elevation of the sea dome is not higher than the elevation of the low threshold in the differential tail threshold, and the length of the sea dome is 0.5-1.0 times of the length of the stilling pool.
Optionally, the water taking hole, the arch bridge sill, the stilling pool and the differential tail sill are all of reinforced concrete structures; the sea wall is a steel reinforcement cage.
The arch bridge ridge structure for reducing the fluctuation of the water surface of the stilling pool of the utility model forms hydraulic jump in the stilling pool through the arch bridge ridge to eliminate most energy in water, and the water surface after the stilling pool is reduced through the differential tail ridge falls, thus being an energy dissipation facility for energy dissipation and smooth water flow state; the end of the stilling pool is a protective facility; after the water flow passes through two energy dissipaters and one protection facility, most energy in the water flow is eliminated, the flow state of the water flow is improved, and the flow speed is homogenized, so that the scouring of the water flow on the tail end of the stilling basin and a downstream river channel is reduced. The structure is simple, and the construction is easy.
Drawings
Fig. 1 is a schematic structural plan view of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a view in elevation of the reservoir of FIG. 1 at B-B;
FIG. 4 is an elevational view at C-C within the cell of FIG. 1;
fig. 5 is a view in elevation at D-D in the cell of fig. 1.
In the above figures: 1. a water taking hole; 2. an arch bridge ridge; 3. a stilling pool; 4. differential tail ridges; 5. and (5) sea management.
Detailed Description
The present invention is further illustrated by the following examples of one or more embodiments.
Example 1
Referring to fig. 1 and 2, an embodiment of the present invention provides an arch bridge sill structure for reducing fluctuation of a water surface of a stilling pool, including a water intake hole 1, an arch bridge sill 2, a stilling pool 3, a differential tail sill 4, and a sea wall 5; a row of water taking holes 1 are formed in the upstream end of the stilling pool 3; an arch bridge ridge 2 is transversely arranged at the upstream section of the stilling pool 3, a differential tail ridge 4 is transversely arranged at the tail end of the stilling pool 3, a sea membrane 5 is laid at the downstream of the differential tail ridge 4, and the sea membrane 5 is parallel to the arch bridge ridge 2.
When the water flow is actually used, when the water flow flows through the arch bridge sill 2, one part of the water flow continuously flows out from the holes at the bottom of the arch bridge sill 2 along the original direction, and the other part of the water flow is blocked by the arch bridge sill 2 and turns over from the top of the arch bridge sill 2 to flow to the downstream, so that on one hand, partial energy in the water flow is eliminated, on the other hand, the flow velocity distribution is homogenized, and the flow state is improved; the differential tail ridge 4 is an energy dissipation facility for dissipating energy and smoothing the flow state of water flow, and can dissipate most of energy in the water flow; the sea inundation 5 is a protective facility and can improve the anti-scouring capability of a downstream river channel; after the water flow passes through two energy dissipation devices, namely the arch bridge ridge 2 and the differential tail ridge 4, and the protection facility, namely the sea dam 5, smooth connection of the water flow of the stilling basin 3 and the water flow of a downstream river channel can be ensured. The utility model discloses an arch bridge bank structure for reducing stilling pool surface of water is undulant has eliminated most energy in the rivers, has improved the flow state and the homogenization velocity distribution of rivers, reduces the washing away of rivers to stilling pool end and downstream river course, its simple structure, easily construction.
Example 2
Referring to fig. 2, on the basis of the embodiment 1, the bottom surface of the stilling pool 3 is horizontal, and the elevation of the bottom surface of the stilling pool 3 is the same as that of the bottom surface of the water taking hole 1.
When in actual use, the stilling pool 3 adopts the technical scheme, so that the water flow of the water taking hole 1 can be smoothly connected with the water flow of the stilling pool 3.
Example 3
Referring to fig. 3, on the basis of the embodiment 1, the cross section of the opening of the water taking hole 1 is rectangular.
The water taking holes 1 are rectangular, so that construction is convenient, and outflow is uniform in open flow.
Example 4
Referring to fig. 2 and 4, on the basis of embodiment 1, the cross sections of the holes at the bottom of the arch bridge sill 2 are all rectangular, the top of the arch bridge sill 2 is a horizontal plane, the upstream surface and the downstream surface are both vertical surfaces, and the number of the holes is the same as that of the water taking holes 1 and corresponds to that of the water taking holes 1.
The width of the bottom hole of the arch bridge sill 2 is 0.6-0.7 times of that of the water taking hole 1; the height of the bottom hole of the arch bridge sill 2 is 0.15-0.25 time of the height of the water taking hole 1; the total height of the arch bridge ridge 2 is 0.6-0.7 times of the height of the holes 1 of the water taking holes.
When the water flow flowing out of the water taking hole 1 flows through the arch bridge ridge 2, one part of the water flow continuously flows out of the hole at the bottom of the arch bridge ridge 2 along the original direction, and the other part of the water flow is blocked by the arch bridge ridge 2 and turns over from the top of the arch bridge ridge 2 to flow to the downstream, so that partial energy in the water flow is eliminated, the flow rate is homogenized, and the flow state is improved.
Example 5
Referring to fig. 1, 2 and 5, on the basis of embodiment 1, the upstream surface of the differential tail sill 4 is an upright surface, the downstream surface is an inclined surface, and the elevation of the low sill in the differential tail sill 4 is not lower than the elevation of the bottom surface of the stilling pool 3.
The differential tail sill 4 can enable submerged hydraulic jump to be formed in the stilling pool, most energy in water flow is eliminated, in addition, when the water flow passes through the differential tail sill 4, the water flow respectively flows over the high sill and the low sill of the differential tail sill 4, the water surface falling behind the differential tail sill 4 can be reduced, and the scouring of the tail end of the stilling pool 3 and a downstream river channel is reduced.
Example 6
Referring to fig. 1 and 2, on the basis of embodiment 1, the top elevation of the sea dome 5 is not higher than the elevation of the low threshold in the differential tail threshold 4, the length of the sea dome 5 is 0.5-1.0 times of the length of the stilling pool 3, and the thickness of the sea dome 5 is not less than 1.5 m.
The technical scheme is adopted by the sea urchin 5, so that the scouring of the tail end of the absorption basin 3 can be effectively reduced, and the safety of the absorption basin 3 is protected.
Example 7
Referring to fig. 1, 2, 3, 4 and 5, in any one of the above embodiments, the water intake hole 1, the arch bridge sill 2, the stilling basin 3 and the differential tail sill 4 are all of reinforced concrete structures, and the sea wall 5 is a steel reinforcement cage.
In actual use, the water taking hole 1, the arch bridge sill 2, the stilling pool 3 and the differential tail sill 4 are all of reinforced concrete structures, so that the accuracy of building manufacture can be ensured, and the safety and the durability of the building are improved; the technical scheme that the sea uses a steel reinforcement cage is adopted in the sea dam 5, so that the deformation of a downstream river channel can be better adapted, and the safety of the stilling basin 3 is powerfully protected.
To sum up, the arrangement of the middle arch bridge ridge 2 of the utility model can eliminate partial energy in water flow, homogenize flow velocity distribution and improve flow state; the differential tail ridge 4 is arranged, so that submerged hydraulic jump can be formed in the stilling pool, most energy in water flow is eliminated, the water surface falling behind the stilling pool is reduced, and the energy dissipation device is energy dissipation equipment for dissipating energy and smoothing flow state of water flow; the downstream sea inundation 5 of the differential tail sill 4 is a protective facility, and the scouring of the downstream of the differential tail sill 4 can be reduced; after the water flow is adjusted by two energy dissipaters and one protective facility, the water flow of the stilling pool 3 can be smoothly connected with the water flow of a downstream river channel.
The utility model discloses can eliminate most energy in the rivers, improve the flow state and the homogenization velocity of flow distribution of rivers, reduce the washing away of rivers to the terminal and the downstream river course of absorption basin, its size is simple, easily the construction.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (8)
1. The utility model provides an arch bridge bank structure for reducing absorption basin surface of water is undulant which characterized in that: comprises a water taking hole (1), an arch bridge sill (2), a stilling basin (3), a differential tail sill (4) and a sea wall (5); a row of water taking holes (1) are formed in the upstream end of the stilling pool (3); the upper reaches section of stilling pool (3) transversely is provided with arched bridge bank (2), the end of stilling pool (3) transversely is provided with differential tail bank (4), differential tail bank (4) low reaches are laid out the sea man (5), sea man (5) with arched bridge bank (2) parallel.
2. The arch bridge sill structure for reducing water surface fluctuation of a stilling pool according to claim 1, characterized in that the bottom surface of the stilling pool (3) is horizontal, and the elevation of the bottom surface of the stilling pool (3) is the same as the elevation of the bottom surface of the water intake hole (1).
3. The arch bridge ridge structure for reducing the fluctuation of the water surface of the stilling pool according to the claim 1, wherein the cross section of the opening of the water taking hole (1) is rectangular.
4. The arch bridge sill structure for reducing the water surface fluctuation of the stilling basin as claimed in claim 1, wherein the cross section of the holes at the bottom of the arch bridge sill (2) is rectangular, the top of the arch bridge sill (2) is a horizontal plane, the upstream and the downstream are vertical planes, and the number of the holes is the same as the number of the water taking holes (1) and corresponds to one another.
5. The arch bridge sill structure for reducing the shifting of the water surface of the stilling pool according to claim 4, wherein the width of the bottom hole of the arch bridge sill (2) is 0.6-0.7 times of that of the water taking hole (1); the height of the bottom hole of the arch bridge sill (2) is 0.15-0.25 time of the height of the water taking hole (1); the total height of the arch bridge sill (2) is 0.6-0.7 times of the height of the water taking hole (1).
6. The arch bridge sill structure for reducing water surface fluctuation of a stilling pool according to claim 1, wherein the upstream surface of the differential tail sill (4) is an upright surface, the downstream surface is an inclined surface, and the elevation of the lower sill in the differential tail sill (4) is not lower than the elevation of the bottom surface of the stilling pool (3).
7. The arch bridge sill structure for reducing water surface fluctuation of a stilling pool according to claim 1, characterized in that the top elevation of the sea dome (5) is not higher than the elevation of the low sill in the differential tail sill (4), and the length of the sea dome (5) is 0.5-1.0 times the length of the stilling pool (3).
8. The arch bridge sill structure for reducing the water surface fluctuation of a stilling basin according to any one of claims 1 to 7, wherein the water taking hole (1), the arch bridge sill (2), the stilling basin (3) and the differential tail sill (4) are all reinforced concrete structures, and the sea dome (5) is a steel reinforcement cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120342321.5U CN215290009U (en) | 2021-02-07 | 2021-02-07 | Arch bridge ridge structure for reducing fluctuation of water surface of stilling pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120342321.5U CN215290009U (en) | 2021-02-07 | 2021-02-07 | Arch bridge ridge structure for reducing fluctuation of water surface of stilling pool |
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| Publication Number | Publication Date |
|---|---|
| CN215290009U true CN215290009U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120342321.5U Active CN215290009U (en) | 2021-02-07 | 2021-02-07 | Arch bridge ridge structure for reducing fluctuation of water surface of stilling pool |
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| CN (1) | CN215290009U (en) |
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2021
- 2021-02-07 CN CN202120342321.5U patent/CN215290009U/en active Active
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