CN214530557U - Stepped spillway - Google Patents
Stepped spillway Download PDFInfo
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- CN214530557U CN214530557U CN202120192110.8U CN202120192110U CN214530557U CN 214530557 U CN214530557 U CN 214530557U CN 202120192110 U CN202120192110 U CN 202120192110U CN 214530557 U CN214530557 U CN 214530557U
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- energy dissipation
- overflow
- board
- spring
- stepped spillway
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- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 62
- 230000000694 effects Effects 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000009991 scouring Methods 0.000 abstract description 5
- 238000011144 upstream manufacturing Methods 0.000 abstract description 3
- 239000004576 sand Substances 0.000 description 10
- 239000011435 rock Substances 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 4
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of hydraulic structure and specifically relates to a cascaded overflow way is related to, it includes to set up the overflow launder on the dam body along the overflow direction, the tank bottom of overflow launder is provided with a plurality of layers degressive step by step, every layer all be provided with the dissipation structure who is used for offsetting rivers impact force on the step, dissipation structure is including slope setting accept the board, the upper surface of accepting the board is towards the upstream of overflow direction, accept the board with be provided with energy dissipation spring between the step, just energy dissipation spring's length direction with the lower surface of accepting the board is perpendicular to each other. This application has the effect of improving the energy dissipation, reduces the dynamics of scouring away to the low reaches river course, also improves the deformation coordination ability of spillway and dam body simultaneously to the effect of result of use has been improved.
Description
Technical Field
The application relates to the field of hydraulic construction, in particular to a stepped overflow channel.
Background
Earth dams, especially silty dams, have a great role in hydraulic engineering and are commonly built in small-area trenches in water and soil erosion areas for holding floods, blocking sand and making fields with silts.
With the frequent occurrence of water damage events of the check dam in recent years, an overflow channel is usually arranged on the dam body to reduce the risk of dam-over and dam-breaking.
And the energy dissipation effect of the overflow channel structure in the prior art is poor, so that the downstream river channel is greatly scoured, and meanwhile, the deformation coordination capability of the overflow channel and the dam body cannot be improved, so that the use effect is reduced.
SUMMERY OF THE UTILITY MODEL
In order to improve the energy dissipation effect, reduce the scouring force degree to the low reaches river course, also improve the deformation coordination ability of overflow way and dam body simultaneously to result in the use has been improved, this application provides a cascaded overflow way.
The application provides a cascaded overflow way adopts following technical scheme:
a stepped overflow channel comprises an overflow groove arranged on a dam body along an overflow direction, wherein the bottom of the overflow groove is provided with a plurality of layers of steps which decrease gradually, and each layer of step is provided with an energy dissipation structure for offsetting the impact force of water flow.
Through adopting above-mentioned technical scheme, during the use, when rivers were gone up along the overflow way down the runner step, rivers were the parabola form and assaults the dissipation structure on, thereby subduct the power consumption through the dissipation structure, when water fell from the step on a plurality of layers, the velocity of flow greatly reduced of rivers, so, improve the energy dissipation effect, reduce the scouring strength to the low reaches river course, also improve the deformation coordination ability of overflow way and dam body simultaneously to the result of use has been improved.
Preferably, the energy dissipation structure comprises a bearing plate which is obliquely arranged, the upper surface of the bearing plate flows upwards in the overflow direction, an energy dissipation spring is arranged between the bearing plate and the step, and the length direction of the energy dissipation spring is perpendicular to the lower surface of the bearing plate.
Through adopting above-mentioned technical scheme, when rivers are the parabola form and strike and accept the board on, accept the board and transmit the energy dissipation spring with the impact force on, thereby the energy dissipation spring takes place to rock and subducts the power consumption, so simple structure reduces the cost.
Preferably, the step is further provided with a guide rod, the energy dissipation spring is sleeved on the guide rod, the bearing plate is provided with a movable hole, the guide rod movably penetrates through the movable hole, and in a natural state, one end, far away from the step, of the energy dissipation spring is located above the bearing plate.
Through adopting above-mentioned technical scheme, when accepting the board and receiving the impact force of rivers, the energy dissipation spring takes place to slide, and the energy dissipation spring rocks along the length direction of guide bar, so improves stability, takes place crooked and the condition that the damage appears when avoiding the energy dissipation spring to receive too big impact force simultaneously.
Preferably, the number of the energy dissipation springs is three, and the three energy dissipation springs are surrounded to form a triangular shape.
Through adopting above-mentioned technical scheme, the shape that three energy dissipation spring encloses to establish and forms is triangle-shaped, and triangle-shaped has stability to effectively improve the stability in the use of accepting the board.
Preferably, the bearing plate is provided with a plurality of pressure relief holes.
Through adopting above-mentioned technical scheme, the setting of pressure-reducing vent can be with the direct water conservancy diversion of partial rivers to low reaches to accelerate the throughput of rivers when not influencing the energy dissipation effect.
Preferably, one end of the overflow groove close to the upstream river channel is further provided with an on-off structure, the on-off structure comprises an accommodating groove arranged at the bottom of the overflow groove, the inner side of the accommodating groove is matched with a lifting plate in a sliding and inserting manner, and the lifting plate is lifted or lowered through the lifting structure.
Through adopting above-mentioned technical scheme, during the use, adjust the height of lifter plate through elevation structure to can adjust the inflow of rivers, and then control the size to the impact force that rivers produced to the energy dissipation structure.
Preferably, elevation structure is including setting up the support frame on the dam body, it runs through and is provided with the actuating lever to rotate on the support frame, the actuating lever passes through the driving piece drive, the lifter plate upper end is provided with the screw thread regulation hole, the lower extreme threaded connection of actuating lever in the screw hole.
Through adopting above-mentioned technical scheme, start the driving piece, the driving piece drives the actuating lever and rotates, and the lower extreme screw thread rotation of actuating lever stretches into in the screw thread regulation hole to pull up the lifter plate, and then reduce the size of overflow launder, so simple structure, stability is good.
Preferably, each layer of step surface all is provided with the speed reduction sand grip, and the length direction and the overflow direction of speed reduction sand grip are mutually perpendicular.
Through adopting above-mentioned technical scheme, the degree of undulation on step surface has been improved through setting up of speed reduction sand grip to play the effect that further plays and slows down the velocity of water.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the energy dissipation structure is used, when water flows onto the steps of the lower flow channel along the overflow groove, the water flows impact the energy dissipation structure in a parabolic shape, energy consumption is reduced through the energy dissipation structure, and when water falls from the steps of a plurality of layers, the flow velocity of the water flows is greatly reduced, so that the energy dissipation effect is improved, the scouring strength on a downstream river channel is reduced, and meanwhile, the deformation coordination capability of the overflow channel and the dam body is also improved, and the use effect is improved;
2. the arrangement of the pressure reducing holes can directly guide partial water flow to the downstream, so that the passing rate of the water flow is increased while the energy dissipation effect is not influenced;
3. when accepting the board and receiving the impact force of rivers, the energy dissipation spring takes place to slide, and the energy dissipation spring rocks along the length direction of guide bar, so improves stability, takes place the crooked condition that appears damaging when avoiding the energy dissipation spring to receive too big impact force simultaneously.
Drawings
Fig. 1 is a schematic view of the overall structure of an embodiment of a stepped spillway of the present application.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
Description of reference numerals: 1. a dam body; 11. an overflow trough; 12. accommodating grooves; 2. a step; 21. a deceleration convex strip; 3. a bearing plate; 31. a pressure relief vent; 32. a movable hole; 4. an energy dissipation spring; 5. a guide bar; 6. an on-off structure; 61. a lifting plate; 611. a threaded adjustment hole; 62. a support frame; 63. a drive rod; 64. a drive member.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses cascaded overflow way. Referring to fig. 1, the stepped overflow channel comprises an overflow groove 11 arranged on a dam body 1 along an overflow direction, a plurality of layers of steps 2 decreasing step by step are arranged at the bottom of the overflow groove 11, and an energy dissipation structure for counteracting the impact force of water flow is arranged on the upper surface of each layer of step 2.
Referring to fig. 1 and 2, specifically, the energy dissipation structure includes an inclined receiving plate 3, the length of the receiving plate 3 is smaller than that of the step 2 and is located above the middle position of the step 2, the upper surface of the receiving plate 3 flows upward in the overflow direction, an energy dissipation spring 4 is arranged between the receiving plate 3 and the step 2, the length direction of the energy dissipation spring 4 is perpendicular to the lower surface of the receiving plate 3, one end of the energy dissipation spring 4 is fixedly connected with the step 2, the other end of the energy dissipation spring 4 is fixedly connected with the lower surface of the receiving plate 3, meanwhile, a plurality of pressure reduction holes 31 are arranged on each receiving plate 3, and the pressure reduction holes 31 can directly guide part of water flow to the downstream, so that the water flow passing rate is increased while the energy dissipation effect is not affected.
Referring to fig. 1 and 2, in the present embodiment, the number of the energy dissipating springs 4 may be three, so that the number of the energy dissipating springs 4 is large, thereby providing a larger supporting force to the receiving plate 3. And three energy dissipation spring 4 encloses the shape of establishing and forming and is the triangle-shaped form, wherein, two energy dissipation spring 4's height is the same, these two energy dissipation spring 4 set up along this length direction interval of accepting board 3, and these two energy dissipation spring 4 are close to the position department of accepting the higher one side of board 3, another energy dissipation spring 4 height is lower, this an energy dissipation spring 4 is close to the middle part position department of accepting the lower one side of board 3, so, three energy dissipation spring 4 is triangle-shaped and arranges, and this three energy dissipation spring 4 wholly is located the middle part position department of accepting the board 3 lower surface, and triangle-shaped has stability, thereby effectively improve the stability in the use of accepting board 3.
Referring to fig. 1 and 2, simultaneously, still be provided with guide bar 5 on step 2, every energy dissipation spring 4 all cup joints on guide bar 5, the one end of guide bar 5 and the last fixed surface of step 2 are connected, accept and be provided with the movable hole 32 on the board 3, the other end activity of guide bar 5 runs through the movable hole 32, and under natural state, the one end that energy dissipation spring 4 kept away from step 2 is located and accepts the top of board 3, when accepting the board 3 and receiving the impact force of rivers, energy dissipation spring 4 takes place to slide, energy dissipation spring 4 rocks along the length direction of guide bar 5, so improve stability, avoid energy dissipation spring 4 to take place the crooked condition that appears damaging when receiving too big impact force simultaneously.
Referring to fig. 1, in addition, an on-off structure 6 is further disposed at one end of the overflow chute 11 close to the upstream river, the on-off structure 6 includes an accommodating groove 12 disposed at the bottom of the overflow chute 11, the length of the accommodating groove 12 is the same as the width of the overflow chute 11, an elevating plate 61 is slidably inserted into and engaged with the inner side of the accommodating groove 12, the height of the elevating plate 61 is the same as the depth of the accommodating groove 12, and the elevating plate 61 is lifted or lowered by the elevating structure.
Referring to fig. 1, specifically, elevation structure is including setting up support frame 62 on dam body 1, and support frame 62 is the type of falling U, the both ends fixed connection of support frame 62 in the both sides of overflow launder 11 on dam body 1, and support frame 62 is kept away from the side of dam body 1 and is rotated and run through and be provided with drive lever 63, and drive lever 63 is vertical to be set up, and drive lever 63 passes through driving piece 64 drive, and driving piece 64 can be the motor. The upper end of the lifting plate 61 is provided with a screw thread adjusting hole 611, the screw thread adjusting hole 611 is located at the middle position of the upper surface of the lifting plate 61, and the lower end of the driving rod 63 is screwed into the screw hole.
Referring to fig. 2, in addition, can also be provided with speed reduction sand grip 21 at the upper surface of every layer of step 2, the cross-section of speed reduction sand grip 21 is the hemisphere, and the length direction and the overflow direction mutually perpendicular of speed reduction sand grip 21, the quantity of speed reduction sand grip 21 on every layer of step 2 can be two in this embodiment, two speed reduction sand grips 21 set up along the even interval of width direction on step 2 upper surface, the degree of fluctuation on step 2 surface has been improved through setting up of speed reduction sand grip 21, thereby play the effect of further slowing down the velocity of water flow.
The implementation principle of the stepped overflow channel in the embodiment of the application is as follows: during the use, adjust the height of lifter plate 61 through driving piece 64, thereby adjust the inflow of rivers, rivers along the overflow launder when going up to runner down step 2, rivers are the parabola impact and accept on the board 3, accept the board 3 and transmit the impact force to energy dissipation spring 4, thereby energy dissipation spring 4 takes place to rock and subducts the power consumption, when water falls down from step 2 on a plurality of layers, the velocity of flow greatly reduced of rivers, thus, improve the energy dissipation effect, reduce the scouring force to the low reaches river course, also improve the deformation coordination ability of overflow way and dam body 1 simultaneously, thereby the result of use has been improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A stepped spillway, comprising: the overflow trough comprises an overflow trough (11) arranged on a dam body (1) along the overflow direction, wherein a plurality of layers of steps (2) decreasing step by step are arranged at the bottom of the overflow trough (11), and an energy dissipation structure for offsetting the impact force of water flow is arranged on each layer of step (2).
2. The stepped spillway of claim 1, wherein: the energy dissipation structure comprises a bearing plate (3) which is obliquely arranged, the upper surface of the bearing plate (3) flows upwards in the overflow direction, an energy dissipation spring (4) is arranged between the bearing plate (3) and the step (2), and the length direction of the energy dissipation spring (4) is perpendicular to the lower surface of the bearing plate (3).
3. The stepped spillway of claim 2, wherein: still be provided with guide bar (5) on step (2), energy dissipation spring (4) cup joint on guide bar (5), be provided with movable hole (32) on accepting board (3), guide bar (5) activity runs through movable hole (32), and under natural state, energy dissipation spring (4) are kept away from the one end of step (2) is located accept the top of board (3).
4. The stepped spillway of claim 2, wherein: the three energy dissipation springs (4) are arranged, and the three energy dissipation springs (4) are arranged in a surrounding mode and are in a triangular shape.
5. The stepped spillway of claim 2, wherein: the bearing plate (3) is provided with a plurality of pressure reducing holes (31).
6. The stepped spillway of claim 1, wherein: the overflow launder (11) is close to the one end in upper reaches river course still is provided with on-off structure (6), on-off structure (6) including set up in holding tank (12) of overflow launder (11) tank bottom, the inboard slip grafting cooperation of holding tank (12) has lifter plate (61), lifter plate (61) promote or descend through the lifter structure.
7. The stepped spillway of claim 6, wherein: the lifting structure comprises a supporting frame (62) arranged on the dam body (1), a driving rod (63) penetrates through the supporting frame (62) in a rotating mode, the driving rod (63) is driven by a driving piece (64), a thread adjusting hole (611) is formed in the upper end of the lifting plate (61), and the lower end of the driving rod (63) is connected to the thread adjusting hole (611) in a threaded mode.
8. The stepped spillway of claim 1, wherein: the surface of each layer of the step (2) is provided with a speed-reducing convex strip (21), and the length direction of the speed-reducing convex strip (21) is perpendicular to the overflow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120192110.8U CN214530557U (en) | 2021-01-23 | 2021-01-23 | Stepped spillway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120192110.8U CN214530557U (en) | 2021-01-23 | 2021-01-23 | Stepped spillway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214530557U true CN214530557U (en) | 2021-10-29 |
Family
ID=78346321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120192110.8U Active CN214530557U (en) | 2021-01-23 | 2021-01-23 | Stepped spillway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214530557U (en) |
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2021
- 2021-01-23 CN CN202120192110.8U patent/CN214530557U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240617 Address after: Unit 4-1, Building 3, Chengzhou Industrial Zone, No. 146 Baozhou Street, Fengze District, Quanzhou City, Fujian Province, 362000 Patentee after: Fujian Lvlin Municipal Garden Co.,Ltd. Country or region after: China Address before: Shop 205, building D, Hubin commercial street, Yangdong country garden, Dongcheng Town, Yangdong District, Yangjiang City, Guangdong Province, 529900 Patentee before: Guangdong Bainian Jiye water conservancy and Hydropower Construction Co.,Ltd. Country or region before: China |