CN216865045U - Open air-doped well type spillway on spillway at top of rock-fill dam and rock-fill dam - Google Patents
Open air-doped well type spillway on spillway at top of rock-fill dam and rock-fill dam Download PDFInfo
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- CN216865045U CN216865045U CN202122725258.6U CN202122725258U CN216865045U CN 216865045 U CN216865045 U CN 216865045U CN 202122725258 U CN202122725258 U CN 202122725258U CN 216865045 U CN216865045 U CN 216865045U
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Abstract
The utility model discloses an open aerated well-type chute of a spillway at the top of a rock-fill dam and the rock-fill dam, wherein the open aerated well-type chute of the spillway at the top of the rock-fill dam comprises a chute body and an air inlet chute, the chute body comprises a bottom plate and two side walls, and the two side walls are respectively arranged at two sides of the bottom plate; the air inlet grooves are formed in the inner sides of the two side walls and are vertical grooves, and the air inlet grooves are used for introducing air. The air inlet groove is directly arranged on the side wall, and air enters the air inlet groove from top to bottom and is mixed into water flow, so that the negative pressure cavitation of the overflow surface can be reduced, the cavitation damage can be prevented, the structure is simplified, the project amount is reduced, and the manufacturing cost is reduced. The utility model is used in the field of hydraulic engineering.
Description
Technical Field
The utility model relates to the field of hydraulic engineering, in particular to an open aerated well type chute for a spillway at the top of a rock-fill dam and the rock-fill dam.
Background
The concrete faced rockfill dam foundation has strong topographic applicability and high cost performance, and is one of the dam retaining structures widely applied at present. When the reservoir adopts a concrete faced rockfill dam to retain water, a low and low dumb port is usually selected to modify a spillway, or when the bank slope of the dam is relatively slow and the topographic and geological conditions are good, the spillway can also be selected to be constructed on the bank slope of the dam so as to discharge redundant flood. However, when the reservoir terrain has no short and low openings and the slopes on both sides of the dam are high and steep, the excavation of the spillway on the bank slope of the dam shoulder can bring about the problems of huge earthwork engineering, high slope management, large-area ecological damage, water and soil conservation, huge waste of soil, huge construction cost and the like. The spillway on the top of the face rockfill dam is the spillway built on the top of the face rockfill dam, so that the dam can retain water and discharge flood, and the problems can be well solved.
At present, the spillway chute of the overflow panel dam on the top of the dam is designed in a segmented mode, a gas inlet well is additionally arranged outside a side wall, and aeration is carried out through connection of a vent hole and a negative pressure area below water flow of the chute. The air inlet well has the advantages of complex structure, large engineering quantity, influence on appearance and increase of manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an open aerated well type spillway of a spillway on the top of a rock-fill dam, which can simplify the structure, reduce the work load and reduce the manufacturing cost.
The utility model also provides a rock-fill dam with the open aerated well type spillway at the top of the rock-fill dam.
According to a first aspect of the utility model, the open aerated well type spillway chute at the top of the rock-fill dam comprises: the tank body comprises a bottom plate and two side walls, wherein the two side walls are respectively arranged on two sides of the bottom plate; the air inlet grooves are arranged on the inner sides of the two side walls and are vertical grooves, and the air inlet grooves are used for introducing air.
The open aerated well type spillway of the spillway at the top of the rock-fill dam according to the embodiment of the utility model at least has the following beneficial effects: the air inlet groove is directly arranged on the side wall, air enters the discharge groove from top to bottom through the air inlet groove and then is mixed into water flow, negative pressure cavitation of the overflow surface can be reduced, cavitation damage can be prevented, the structure is simplified, the project amount is reduced, and the manufacturing cost is reduced.
According to some embodiments of the utility model, the top ends of the air inlet slots are flush with the top ends of the side walls, and the bottom ends of the air inlet slots are flush with the top end of the bottom plate.
According to some embodiments of the utility model, the number of the grooves is two or more, the two or more grooves are distributed in a stepped manner in a segmented manner, each groove has an upstream end and a downstream end, the upstream end of the bottom plate is horizontally arranged, and the downstream end of the bottom plate is obliquely arranged.
According to some embodiments of the utility model, the air inlet groove is disposed at an upstream end of the side wall.
According to some embodiments of the utility model, the upstream end is provided with a limit ridge, and the limit ridge is connected with the downstream end of the last groove body in a jogged manner.
According to some embodiments of the utility model, a water guide gentle slope is arranged at the downstream end of the side wall, and the water guide gentle slope inclines towards the inside of the groove body.
According to a second aspect of the present invention, the rock-fill dam comprises the open aerated well type spillway at the top of the rock-fill dam of the first embodiment, and further comprises a dam body, wherein the dam body is provided with two side surfaces, one side surface is an upstream water retaining side, the other side surface is a spillway side, and the open aerated well type spillway at the top of the rock-fill dam is arranged at the spillway side.
According to some embodiments of the utility model, the rock-fill dam further comprises an overflow control section, the overflow control section is arranged at the top of the dam body and connected with the groove body at the most upstream, and the overflow control section is provided with an overflow weir which is in a protruding structure.
According to some embodiments of the utility model, the rock-fill dam further comprises a deflecting section, the deflecting section is arranged at the bottom of the dam body and connected with the groove body at the most downstream position, the top of the deflecting section is a smooth concave surface, and a deflecting bucket is arranged at one end, far away from the groove body, of the deflecting section.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a top view of an open aerated well type spillway for a spillway at the top of a rock-fill dam in accordance with an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is an overall cross-sectional view of a rock-pushing dam according to an embodiment of the present invention.
Reference numerals:
the structure comprises a trough body 100, a bottom plate 110, side walls 120, an air inlet trough 200, an upstream end 130, a downstream end 140, a limit sill 150, a water guide gentle slope 160, a rock-fill dam 300, a dam body 310, an overflow control section 320, an overflow weir 321, a deflecting section 330 and a deflecting bucket 331.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to the orientation description, such as the directions of up, down, front, rear, left, right, etc., may be based on those shown in the drawings, only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 3, the utility model provides an open aerated well type spillway for a spillway at the top of a rock-fill dam, comprising a trough body 100 and an air inlet trough 200, wherein the trough body 100 comprises a bottom plate 110 and two side walls 120, and the two side walls 120 are respectively arranged at two sides of the bottom plate 110; the air inlet grooves 200 are disposed at inner sides of the two side walls 120, the air inlet grooves 200 are vertical grooves, and the air inlet grooves 200 are used for introducing air.
The air inlet grooves 200 are directly formed in the side walls 120, air enters the air inlet grooves 200 from top to bottom and is mixed into water flow, and therefore the negative pressure cavitation of the overflow surface and the cavitation damage can be avoided, the structure is simplified, the engineering quantity is reduced, and the manufacturing cost is reduced.
In some embodiments of the present invention, the top end of the air intake slot 200 is flush with the top end of the side wall 120, and the bottom end of the air intake slot 200 is flush with the top end of the bottom plate 110.
Through the top that makes air inlet duct 200 in the top parallel and level of side wall 120, the bottom of air inlet duct 200 and the top parallel and level of bottom plate 110 can guarantee that the air of air inlet duct 200 enters from side wall 120 top, flows out air inlet duct 200 from the top of bottom plate 110, alright guarantee that the air from top to bottom gets into in the air inlet duct 200 to mix rivers.
In some embodiments of the present invention, there are more than two troughs 100, the two troughs 100 are distributed in a stepwise manner, each trough 100 has an upstream end 130 and a downstream end 140, the upstream end 130 of the bottom plate 110 is horizontally disposed, and the downstream end 140 of the bottom plate 110 is obliquely disposed.
The trough body 100 adopts the stepped distribution of segmentation more than two, can make the rivers energy dissipation, in order to avoid when the flood discharge, the flood discharge rivers are too fast, can erode the low reaches river course, so the level sets up bottom plate 110 in the upper reaches end 130 department of trough body 100, make a plurality of discharge slots connect the back and form the stepped form of segmentation, at the stepped form of each discharge slot junction, alright make the energy dissipation of flood discharge rivers effectively, simultaneously can be at two trough body 100 junctions, rivers when through inertia outflow, form the negative pressure zone between rivers below and the bottom plate 110, enable the air to get into through air inlet tank 200.
In some embodiments of the present invention, the air intake slots 200 are disposed at the upstream end 130 of the sidewall 120.
When water flows through the joint of the two tank bodies 100, the water flow leaves the bottom plate 110 of the previous tank body 100 through inertia, at the moment, a negative pressure area is formed between the lower part of the water flow and the bottom plate 110 and is lower than the external air pressure, a pressure difference is formed at the moment, air enters the negative pressure area below the water flow through the air inlet groove 200 and is mixed into the water flow, and when the water flow returns to the bottom plate 110 of the next tank body 100 again, the water layer close to the bottom plate 110 is mixed naturally, so that cavitation damage can be prevented.
In some embodiments of the present invention, the upstream end 130 is provided with a limit threshold 150, and the limit threshold 150 is engaged with the downstream end 140 of the previous slot 100.
The limiting ridges 150 can support and block the soil and stones of the upstream dam body on one hand, and can limit the horizontal relative movement of the last chute body 100 on the other hand.
In some embodiments of the present invention, the downstream end 140 of the side wall 120 is provided with a water guiding gentle slope 160, and the water guiding gentle slope 160 inclines towards the inside of the tank body 100.
The water guide gentle slope 160 inclines inwards, so that the effect of guiding water flow to flow inwards at the joint of the two groove bodies 100 can be achieved, the air inlet groove 200 is prevented from being blocked, and air can smoothly enter a negative pressure area below the water flow through the air inlet groove 200.
The utility model also provides a rock-fill dam 300, which comprises the open aerated well-type discharge chute of the spillway on the top of the rock-fill dam and a dam body 310, wherein the dam body 310 is provided with two side surfaces, one side is an upstream water retaining side, the other side is a discharge chute side, and the open aerated well-type discharge chute of the spillway on the top of the rock-fill dam is arranged on the discharge chute side.
In some embodiments of the present invention, the rock-fill dam 300 further includes an overflow control section 320, the overflow control section 320 is disposed at the top of the dam body 310, the overflow control section 320 is connected to the groove body 100 at the most upstream, the overflow control section 320 is provided with an overflow weir 321, and the overflow weir 321 is a protruding structure.
The raised configuration of the weir 321 is higher than the normal storage level so that when the water level rises, water flows naturally over the weir 321 to discharge the flood.
In some embodiments of the present invention, the rock-fill dam 300 further includes a deflecting section 330, the deflecting section 330 is disposed at the bottom of the dam body 310, the deflecting section 330 is connected to the trough body 100 at the most downstream, the top of the deflecting section 330 is a smooth concave surface, and a deflecting bucket 331 is disposed at one end of the deflecting section 330 away from the trough body 100.
When the upstream flood discharge water flows to the trajectory deflecting section 330, the water flow velocity is high, so that the water flow is prevented from scouring the downstream river channel, energy dissipation is needed, and the water flow can fly upwards along the trajectory deflecting bucket 331 under the action of inertia after passing through the concave surface at the top of the trajectory deflecting section 330, and finally, the water flow collides with the downstream water surface, so that the energy dissipation effect is achieved.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (9)
1. An open aerated well type chute of a spillway at the top of a rock-fill dam, comprising:
the tank body comprises a bottom plate and two side walls, wherein the two side walls are respectively arranged on two sides of the bottom plate;
the air inlet grooves are arranged on the inner sides of the two side walls and are vertical grooves, and the air inlet grooves are used for introducing air.
2. The open aerated well type spillway chute of a rock-fill dam crest spillway of claim 1, wherein: the top end of the air inlet groove is flush with the top end of the side wall, and the bottom end of the air inlet groove is flush with the top end of the bottom plate.
3. The open aerated well type spillway chute of a rock-fill dam crest spillway of claim 1, wherein: the cell body has more than two, more than two the cell body is the cascaded distribution of segmentation, every the cell body has upstream end and low reaches end, the upstream end level of bottom plate sets up, the low reaches end slope of bottom plate sets up.
4. The open aerated well type spillway drain of a rock-fill dam crest spillway of claim 3, wherein: the air inlet groove is formed in the upstream end of the side wall.
5. The open aerated well type spillway chute of a rock-fill dam crest spillway of claim 3, wherein: the upstream end is provided with a limit ridge, and the limit ridge is connected with the downstream end of the last groove body in an embedded mode.
6. The open aerated well type spillway chute of a rock-fill dam crest spillway of claim 3, wherein: and a water guide gentle slope is arranged at the downstream end of the side wall and inclines towards the interior of the groove body.
7. A rock-fill dam, comprising: the open aerated well-type chute for a spillway at the top of a rock-fill dam comprising any one of claims 1 to 5, further comprising a dam body having two sides, one of which is an upstream retaining side and the other of which is a chute side, wherein the weir-type chute of the spillway at the top of the rock-fill dam is disposed at the chute side.
8. The rock-fill dam of claim 7, wherein: the rock-fill dam further comprises an overflow control section, the overflow control section is arranged at the top of the dam body and connected with the groove body at the most upstream, and an overflow weir is arranged on the overflow control section and is of a protruding structure.
9. The rock-fill dam of claim 7, wherein: the rock-fill dam is characterized by further comprising a deflecting section, the deflecting section is arranged at the bottom of the dam body and connected with the groove body at the most downstream position, the top of the deflecting section is a smooth concave surface, and a deflecting bucket is arranged at one end, far away from the groove body, of the deflecting section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122725258.6U CN216865045U (en) | 2021-11-08 | 2021-11-08 | Open air-doped well type spillway on spillway at top of rock-fill dam and rock-fill dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122725258.6U CN216865045U (en) | 2021-11-08 | 2021-11-08 | Open air-doped well type spillway on spillway at top of rock-fill dam and rock-fill dam |
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| Publication Number | Publication Date |
|---|---|
| CN216865045U true CN216865045U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122725258.6U Active CN216865045U (en) | 2021-11-08 | 2021-11-08 | Open air-doped well type spillway on spillway at top of rock-fill dam and rock-fill dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216865045U (en) |
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2021
- 2021-11-08 CN CN202122725258.6U patent/CN216865045U/en active Active
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