CN212896234U - Connection structure of bank spillway slow-leveling section and steep groove section - Google Patents
Connection structure of bank spillway slow-leveling section and steep groove section Download PDFInfo
- Publication number
- CN212896234U CN212896234U CN202021470400.6U CN202021470400U CN212896234U CN 212896234 U CN212896234 U CN 212896234U CN 202021470400 U CN202021470400 U CN 202021470400U CN 212896234 U CN212896234 U CN 212896234U
- Authority
- CN
- China
- Prior art keywords
- section
- energy dissipation
- bottom plate
- slow
- side wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 34
- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 238000005273 aeration Methods 0.000 claims abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 210000001503 Joints Anatomy 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 230000000875 corresponding Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003628 erosive Effects 0.000 abstract description 2
- 238000009412 basement excavation Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 241000191896 Rana sylvatica Species 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
Images
Abstract
The utility model discloses a connection structure of a bank spillway slow-level section and a steep groove section, which adopts a woqun section and an energy dissipation section to connect the bank spillway slow-level section and the steep groove section; the Woqi section is positioned at the upstream side of the energy dissipation section, the Woqi section bottom plate and the Woqi section side wall are respectively connected with the slow section bottom plate and the side wall, and the energy dissipation section bottom plate and the energy dissipation section side wall are respectively connected with the steep groove section bottom plate and the side wall; an aeration drop sill is arranged on the upstream side of the bottom plate of the wonder section, a ventilation vertical shaft is arranged at the contact position of the aeration drop sill and the side wall of the wonder section, and a ventilation opening is arranged at the bottom of the ventilation vertical shaft. This scheme can fully aerify the rivers of leaking down, effectively avoids wonderful section rivers because the violent decline of centrifugal force effect pressure produces the negative pressure and the surface construction unevenness easily plays the cavitation erosion phenomenon that the local pressure drop leads to and takes place, and simultaneously, the setting of energy dissipation section can fully dissipate the energy to the rivers of leaking down, reduces the flood discharge and atomizes, reduces the rivers velocity of flow of leaking down of spillway exit, reduces energy dissipation building corresponding engineering volume.
Description
Technical Field
The utility model belongs to the technical field of hydraulic and hydroelectric engineering, especially, relate to a bank spillway is slow flat section and abrupt groove section connection structure.
Background
For flexible dams such as face dams, earth and rockfill dams, core dams and the like, spillways are often arranged at the bank side to ensure the safety of dam structures in order to discharge flood exceeding the regulation and storage capacity of reservoirs or reduce reservoir water level. When the topography of the position of the spillway is changed from slow to steep, the shoreside spillway is usually provided with a slow-level section and a steep groove section for adapting to the change of topography conditions and reducing the excavation supporting engineering quantity of the spillway, and the slow-level section and the steep groove section are connected by the Woqi section, so that the transition of the bottom plate is smooth, and bad flow state is avoided.
According to the standard requirement, the bottom plate of the Woqi section adopts a parabolic structure, the pressure of water flow is reduced violently under the action of centrifugal force, negative pressure is easy to generate, and if the surface of the parabolic structure is uneven due to construction, local pressure drop is easy to cause by the convex body on the surface of the bottom plate, the cavitation phenomenon can be promoted. Therefore, reasonable measures should be taken to avoid cavitation erosion in the wonder stage so as to ensure the safety of the spillway structure. In addition, the bank spillway usually adopts a tail end energy dissipation mode, namely a drift bucket or an absorption basin is arranged at an outlet, and the downward discharge water flows through the drift bucket or the absorption basin to dissipate energy and then flows back to the downstream river channel. However, for high-speed downward water flow, the influence of trajectory jet energy dissipation on the production and life of downstream residents and slope protection is large due to flood discharge atomization and pit depth, and the work load of excavation, pouring and the like is large due to long energy dissipation of the stilling pool, so that the construction difficulty and the project investment are increased. Therefore, how to reduce the flow velocity at the outlet of the bank spillway is the key point for reducing the structural size of the flip bucket or the stilling basin, reducing the scouring depth of the downstream riverbed and reducing the support range and the engineering quantity of the bank slopes on both banks.
SUMMERY OF THE UTILITY MODEL
To the shortcoming of conventional bank spillway slow flat section and abrupt groove section linkage segment and terminal energy dissipation, the utility model aims at providing a bank spillway slow flat section and abrupt groove section connection structure to overcome prior art's not enough.
In order to achieve the above object, the utility model adopts the following technical scheme:
a connection structure of a bank spillway slow-level section and a steep groove section adopts a Woqi section and an energy dissipation section to connect the bank spillway slow-level section and the steep groove section; the Woqi section is positioned at the upstream side of the energy dissipation section, the Woqi section bottom plate and the Woqi section side wall are respectively connected with the slow section bottom plate and the side wall, and the energy dissipation section bottom plate and the energy dissipation section side wall are respectively connected with the steep groove section bottom plate and the side wall; an aeration drop sill is arranged on the upstream side of the bottom plate of the wonder section, a ventilation vertical shaft is arranged at the contact position of the aeration drop sill and the side wall of the wonder section, and a ventilation opening is arranged at the bottom of the ventilation vertical shaft.
Furthermore, the bottom plate surface of the woolly section adopts a parabolic structure, and the bottom foundation is arranged into a regular inclined plane.
Furthermore, a tail ridge is arranged at the tail end of the energy dissipation section to form a stilling pool structure.
Furthermore, structural transverse joints are arranged among the slow flat section, the Woqi section, the energy dissipation section and the steep groove section, and red copper water stopping is arranged at the structural transverse joints.
Compared with the prior art, the utility model discloses following effect has:
firstly, the aeration flip bucket and the ventilation vertical shaft are arranged at the head end of the woqun section, so that the downward discharge water flow can be fully aerated, and the cavitation phenomenon caused by negative pressure generated by the violent pressure reduction of the woqun section water flow under the action of centrifugal force and local pressure drop easily generated by the uneven local convex body of the surface construction can be effectively avoided.
And secondly, the energy dissipation section is connected behind the wonder section, so that the discharged water flow can be fully dissipated, the flood discharge atomization is reduced, the flow velocity of the discharged water flow at the outlet of the spillway is reduced, the scouring of a tail end energy dissipation building and a natural river bed is effectively reduced, the corresponding engineering quantity of excavation supporting and structures of a flip bucket or a stilling basin at the tail end of the spillway is reduced, and the influence on other buildings of a downstream river channel is reduced.
Thirdly, the structural transverse joints are arranged among the slow flat sections, the pile-fermentation sections, the energy dissipation sections and the steep groove sections, damage to the structure caused by reasons such as temperature stress and uneven settlement of the foundation is avoided, red copper water stopping is arranged at the structural transverse joints, and seepage damage to water flow is avoided.
Drawings
FIG. 1 is a plan view of the present invention;
fig. 2 is an axial sectional view of the present invention.
Description of reference numerals: 1-wodge section bottom plate; 2-wodge section side walls; 3-aerating and dropping threshold; 4-a ventilation shaft; 5-energy dissipation section bottom plate; 6-energy dissipation section side wall; 7-end ridge; 8-structural transverse seams; 9-a vent; 10-red copper water stop; 11-a gentle flat section; 12-steep groove section.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, the present invention includes the following components: 1, a wonder section bottom plate; 2, a Woodfrog section side wall; 3 aerating and dropping threshold; 4, ventilating a vertical shaft; 5, an energy dissipation section bottom plate; 6 energy dissipation section side walls; 7, a tail ridge; 8, transverse seam of structure; 9, a vent; 10 red copper water stop. The main implementation mode is as follows:
the bank spillway slow-level section 11 and the steep groove section 12 are connected by a Woqi section and an energy dissipation section, the Woqi section is located at the upstream side of the energy dissipation section, a Woqi section bottom plate 1 and a Woqi section side wall 2 are respectively connected with a slow-level section 11 bottom plate and a side wall, an energy dissipation section bottom plate 5 and an energy dissipation section side wall 6 are respectively connected with a steep groove section 12 bottom plate and a side wall, and the height of each side wall can be determined through hydraulic calculation.
An aeration drop sill 3 is arranged on the upstream side of the bottom plate 1 of the wonder section, a ventilation vertical shaft 4 is arranged at the contact position of the aeration drop sill 3 and the side wall 2 of the wonder section, a vent 9 is arranged at the bottom of the ventilation vertical shaft 4, and when water flows leak from the aeration drop sill 3, sufficient aeration corrosion reduction can be carried out.
The surface of the bottom plate 1 at the Woqi section adopts a parabolic structure to ensure the flow state of water flow, and the bottom foundation is provided with a regular inclined plane according to the actual condition on the premise of ensuring the thickness of the bottom plate, so that foundation excavation, structural reinforcement binding and concrete pouring construction are facilitated.
The tail end of the energy dissipation section is provided with the tail ridge 7 to form a stilling basin structure, so that the downward flow is fully dissipated, the flow velocity of the downward flow is reduced, and the corresponding project amount of the energy dissipation building at the tail end of the spillway is reduced.
Set up the horizontal seam 8 of structure between slow flat section 11, the woqu section, energy dissipation section and steep groove section 12 each section to avoid reasons such as temperature stress, the uneven settlement of basis to cause the destruction of structure, and set up red copper stagnant water 10 in the horizontal seam 8 department of structure, avoid the infiltration of rivers to destroy.
Of course, the above is only the specific application example of the present invention, and the present invention has other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope claimed by the present invention.
Claims (4)
1. The utility model provides a bank spillway is slow even section and abrupt groove section connection structure which characterized in that: the connection structure adopts a Woqi section and an energy dissipation section to connect the bank spillway slow-level section (11) with the steep groove section (12); the cascade section is positioned at the upstream side of the energy dissipation section, a bottom plate (1) of the cascade section and a side wall (2) of the cascade section are respectively connected with a bottom plate and a side wall of the slow flat section (11), and a bottom plate (5) of the energy dissipation section and a side wall (6) of the energy dissipation section are respectively connected with a bottom plate and a side wall of the steep groove section (12); an aeration drop sill (3) is arranged on the upstream side of the bottom plate (1) of the woodd section, a ventilation vertical shaft (4) is arranged at the contact position of the aeration drop sill (3) and the side wall (2) of the woodd section, and an air vent (9) is arranged at the bottom of the ventilation vertical shaft (4).
2. The shore spillway slow-level section and steep groove section connecting structure according to claim 1, characterized in that: the surface of the bottom plate (1) of the woqun section is of a parabolic structure, and the bottom foundation is arranged into a regular inclined plane.
3. The shore spillway slow-level section and steep groove section connecting structure according to claim 1, characterized in that: and a tail sill (7) is arranged at the tail end of the energy dissipation section to form a stilling pool structure.
4. The shore spillway slow-level section and steep groove section connecting structure according to claim 1, characterized in that: structural transverse joints (8) are arranged among the slow flat sections (11), the Woqi sections, the energy dissipation sections and the steep groove sections (12), and red copper water stops (10) are arranged at the structural transverse joints (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021470400.6U CN212896234U (en) | 2020-07-23 | 2020-07-23 | Connection structure of bank spillway slow-leveling section and steep groove section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021470400.6U CN212896234U (en) | 2020-07-23 | 2020-07-23 | Connection structure of bank spillway slow-leveling section and steep groove section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212896234U true CN212896234U (en) | 2021-04-06 |
Family
ID=75292884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021470400.6U Active CN212896234U (en) | 2020-07-23 | 2020-07-23 | Connection structure of bank spillway slow-leveling section and steep groove section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212896234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114606906A (en) * | 2022-03-29 | 2022-06-10 | 中国水利水电科学研究院 | Device for controlling water flow state in front pool of inverted siphon water inlet |
-
2020
- 2020-07-23 CN CN202021470400.6U patent/CN212896234U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114606906A (en) * | 2022-03-29 | 2022-06-10 | 中国水利水电科学研究院 | Device for controlling water flow state in front pool of inverted siphon water inlet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112281770B (en) | Flood discharge structure adopting bottom hole and surface hole combined flood discharge and energy dissipation | |
| CN102900054A (en) | River bank-like flood spillway | |
| CN101538840B (en) | Trajectory jet type energy dissipater in absorption basin | |
| CN210002360U (en) | kinds of mountain gorge damming flood discharge structure | |
| CN212896234U (en) | Connection structure of bank spillway slow-leveling section and steep groove section | |
| CN204982814U (en) | Power that disappears structure in low water head dam low reaches riverbed | |
| CN201933472U (en) | Dam structure utilizing flaring piers and dam face small flip buckets to jointly discharge flood and dissipate energy | |
| CN109098152B (en) | Anti-cavitation facility of ladder overflow dam | |
| CN202913400U (en) | River bank spillway | |
| CN214738637U (en) | Water outlet structure of power plant | |
| CN111809579B (en) | Self-aeration ternary hydraulic jump stilling basin | |
| CN211690240U (en) | Bottom flow energy dissipation structure for small-opening discharge of gate dam | |
| CN211948311U (en) | Combined impact energy dissipation box structure | |
| CN209603031U (en) | A kind of patch angle experimental rig applied to slit | |
| CN111424620A (en) | Hydraulic energy dissipation structure and method | |
| CN110284468A (en) | A kind of flood-discharge energy-dissipating structure for high flow rate non-pressure tunnel | |
| CN111058422A (en) | Water blocking and draining structure | |
| CN110593221A (en) | Fold-line type flip bucket at outlet of bank spillway/flood discharge tunnel | |
| CN215290013U (en) | Stilling pool structure for enhancing hydraulic jump energy dissipation | |
| CN217974257U (en) | Space energy dissipation and aerated spillway structure | |
| CN217078657U (en) | From aeration space diffusion flip bucket structure | |
| CN212896232U (en) | Reduce pond structure that disappears of bottom plate pulsating pressure | |
| CN211849318U (en) | Anti-blocking spillway | |
| CN213296282U (en) | Energy dissipation and aeration structure for high and steep spillway chute | |
| CN216130077U (en) | Combined type flow-picking energy dissipation device suitable for narrow riverbed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |