CN214939924U

CN214939924U - Continuous energy dissipation structure of spillway

Info

Publication number: CN214939924U
Application number: CN202121806709.2U
Authority: CN
Inventors: 孟范璞
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2021-11-30
Anticipated expiration: 2031-08-04

Abstract

The utility model particularly relates to a structure of continuous energy dissipation of spillway belongs to hydraulic engineering technical field, and the problem that solve provides a structure of continuous energy dissipation of spillway, and the scheme of adoption is: the spillway dam, the spillway and the stilling basin are sequentially connected from top to bottom, side walls are fixed on two sides of the spillway, a plurality of steps are uniformly distributed on the spillway, and a plurality of rows of energy dissipation units are mounted on the steps; the energy dissipation units all include: the lower ends of the first plate and the second plate are fixed with the bottom surface of the spillway, the first plate and the second plate incline towards the downstream of water flow, the first plate and the second plate are arranged in a cross mode with the direction of the water flow, and the first plate and the second plate are provided with a plurality of rows of energy dissipation holes through which the water flow passes from top to bottom; the utility model discloses an energy dissipation unit carries out the energy dissipation to rivers and handles, and the effectual rivers of having avoided have avoided causing the threat of destruction to the low reaches building to the washing away of low reaches bank.

Description

Continuous energy dissipation structure of spillway

Technical Field

The utility model belongs to the technical field of hydraulic engineering, concretely relates to continuous energy dissipation's of spillway structure.

Background

In order to discharge the redundant water volume of the reservoir, prevent flood from overflowing the dam and losing work, ensure engineering safety, and meet the requirements of emptying the reservoir, controlling flood and the like, a spillway is generally arranged in a hydraulic junction. As a spillway arranged in water conservancy and hydropower engineering, the spillway not only can meet the flood discharge capacity, but also can ensure that the due energy dissipation effect can be fully exerted during the operation so as to avoid the scouring damage of the downstream riverbed and bank slope caused by the downward discharge water flow. At present, smooth overflow surfaces of step spillways are mostly designed into step shapes, on one hand, the roughness of water passing wall surfaces can be increased, on the other hand, a large amount of aeration can be carried out on water flow due to formed falling sills, so that the loss of the on-way capacity in the water flow discharging process is increased, and the downstream energy dissipation pressure is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art exists not enough, provides a continuous energy dissipation's of spillway structure, adds further energy dissipation unit on the basis of step bottom surface energy dissipation, especially when the rivers degree of depth is darker, carries out the functions such as shooting, aerify and reposition of redundant personnel to rivers through the energy dissipation unit and carries out the energy dissipation processing, and the effectual washing away of having avoided rivers to the low reaches bank has avoided leading to the fact the threat of destruction to the low reaches building.

In order to solve the technical problem, the utility model discloses a technical scheme be: a continuous energy dissipating structure for spillways, comprising: the energy dissipation device comprises a flood overflowing dam, a flood overflowing channel, side walls, steps, a stilling pool and energy dissipation units, wherein the flood overflowing dam, the flood overflowing channel and the stilling pool are sequentially connected from top to bottom, the side walls are fixed on two sides of the flood overflowing channel, a plurality of steps are uniformly distributed on the flood overflowing channel, and a plurality of rows of the energy dissipation units are mounted on the steps;

the energy dissipation units all include: the device comprises a first plate, a second plate and energy dissipation holes, wherein the lower ends of the first plate and the second plate are fixed with the bottom surface of a spillway, the first plate and the second plate incline towards the downstream of water flow, the first plate and the second plate are symmetrically arranged relative to the water flow direction, the first plate and the second plate are arranged in a crossed mode along the water flow direction, and the first plate and the second plate are provided with the energy dissipation holes through which multiple rows of water flow pass from top to bottom.

When water flows pass through the first plate or the second plate, because the first plate and the second plate are arranged in a direction crossed with the water flow and pass through friction barriers of the first plate and the second plate, two pairs of water flows of the first plate and the second plate carry out opposite-flushing energy dissipation, energy dissipation holes are formed in the first plate and the second plate, part of the water flows penetrate through the energy dissipation holes to flow downstream when the water flows impact the first plate and the second plate, the water flows are aerated and form rotational flow when penetrating through the energy dissipation holes, partial energy dissipation treatment is carried out on the water flows, the water flows from the upper end or the edge of the first plate or the second plate flow downstream after being subjected to split-flow and flip-jet, and the energy dissipation unit further dissipates the energy of the water flows.

And one adjacent sides of the first plate and the second plate are fixedly connected to form a folded plate-shaped structure, the included angle of the folded plate-shaped included angle of the first plate and the second plate towards one side of the flood overflow dam is less than 180 degrees, and the included angle of the first plate and the second plate towards one side of the flood overflow dam is 120-160 degrees.

The height of the first plate and the height of the second plate are respectively 1.5-2.5 times of the height of the step.

The single energy dissipation units on the steps are arranged in two rows and comprise front row energy dissipation units and rear row energy dissipation units, the front row energy dissipation units and the rear row energy dissipation units are arranged in the front and the rear, and the front row energy dissipation units and the rear row energy dissipation units are arranged in a staggered mode.

The energy dissipation unit further comprises a reinforcing frame, the reinforcing frame is fixed with the first plate and the second plate, and the reinforcing frame is used for enhancing the impact strength of the energy dissipation unit.

The reinforcing frame includes: the folding plate comprises three vertical rods and three cross rods, wherein the three vertical rods are arranged along the folded plate-shaped structures of the first plate and the second plate, and a plurality of cross rods are fixed between every two adjacent vertical rods.

The vertical rods and the transverse rods are made of steel bars, and the first plate and the second plate are made of the reinforcing frame and concrete in a pouring mode.

And the precast energy dissipation unit and the step are cast, molded and fixed.

The stilling pool is of a concave arc shape, a plurality of toe piers which are arranged at intervals are uniformly distributed at one end of the stilling pool facing the downstream, and the toe piers are used for further dissipating energy of water flow.

Compared with the prior art, the utility model following beneficial effect has.

One, the utility model discloses a two rows of crisscross energy dissipation units that set up around setting up on the step, especially when the rivers degree of depth is darker, carry out the functions such as jet, aerify and reposition of redundant personnel to rivers through the energy dissipation unit and carry out the energy dissipation and handle, effectually avoided rivers to the washing away of low reaches bank, avoided causing the threat of destruction to low reaches building.

Secondly, the utility model discloses an energy dissipation unit adopts the folded plate column structure that board one and board two formed, hinders and rubs rivers, with the back projecting of rivers reposition of redundant personnel, has carried out abundant energy dissipation to rivers and has handled.

Thirdly, the utility model discloses be provided with the energy dissipation hole on the folded plate that board one and board two formed, rivers are impacting partial rivers run through the energy dissipation hole downstream when board one and board two, and rivers aerify and form the whirl when running through the energy dissipation hole, carry out partial energy dissipation to rivers and handle.

Fourth, the utility model discloses a reinforcing frame and the concrete placement energy dissipation unit that forms of reinforcing bar formation, simple structure, easily shaping, when the step is built by laying bricks or stones, direct and step an organic whole are pour and are formed, make things convenient for the installation and the use of industrialization.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Figure 1 is the top view of the continuous energy dissipation structure of spillway of the present invention.

Fig. 2 is a schematic structural view of the continuous energy dissipation structure of the spillway of the present invention.

Fig. 3 is an enlarged view of the position a of the present invention.

Figure 4 is a side view of the energy dissipating unit of the present invention.

Figure 5 is the structure diagram of the energy dissipation unit of the present invention.

Fig. 6 is a schematic structural view of the reinforcing frame of the present invention.

In the figure: the spillway side wall is 1, the step is 2, the front row energy dissipation unit is 3, the rear row energy dissipation unit is 4, the spillway dam is 5, the stilling basin is 6, the toe pier is 7, the energy dissipation unit is 8, the energy dissipation hole is 9, the first plate is 10, the second plate is 11, the reinforcing frame is 12, the vertical rod is 13, the horizontal rod is 14, and the spillway is 15.

Detailed Description

The following is a further description with reference to specific examples.

A continuous energy dissipating structure for spillways, comprising: the energy dissipation device comprises a spillway dam 5, spillway channels 15, side walls 1, steps 2, a stilling pool 6 and energy dissipation units 8, wherein the spillway dam 5, the spillway channels 15 and the stilling pool 6 are sequentially connected from top to bottom, the side walls 1 are fixed on two sides of the spillway channels 15, a plurality of the steps 2 are uniformly distributed on the spillway channels 15, and a plurality of rows of the energy dissipation units 8 are arranged on the steps 2;

the energy dissipation units 8 each include: the spillway structure comprises a first plate 10, a second plate 11 and energy dissipation holes 9, the lower ends of the first plate 10 and the second plate 11 are fixed to the bottom surface of the spillway 15, the first plate 10 and the second plate 11 incline to the downstream of water flow, the first plate 10 and the second plate 11 are symmetrically arranged relative to the water flow direction, the first plate 10 and the second plate 11 are arranged in a crossed mode with the water flow direction, and the first plate 10 and the second plate 11 are provided with the energy dissipation holes 9 through which multiple rows of water flow pass from top to bottom.

The adjacent sides of the first plate 10 and the second plate 11 are fixedly connected to form a folded plate-shaped structure, and the included angle of the folded plate-shaped included angle of the first plate 10 and the second plate 11 towards one side of the flood discharge dam 5 is 120 degrees.

The heights of the first plate 10 and the second plate 11 are 2 times of the height of the single step 2.

The energy dissipation units 8 on the single step 2 are two rows and comprise front row energy dissipation units 3 and rear row energy dissipation units 4, the front row energy dissipation units 3 and the rear row energy dissipation units 4 are arranged in the front and rear direction, and the energy dissipation units 8 of the front row energy dissipation units 3 and the rear row energy dissipation units 4 are arranged in a staggered mode.

The energy dissipation unit 8 further comprises a reinforcing frame 12, the reinforcing frame 12 is fixed with the first plate 10 and the second plate 11, and the reinforcing frame 12 is used for enhancing the impact strength of the energy dissipation unit 8.

The reinforcing frame 12 includes: the folding plate comprises three vertical rods 13 and cross rods 14, the number of the vertical rods 13 is three, the three vertical rods 13 are uniformly arranged along the folded plate-shaped structures of the first plate 10 and the second plate 11, and a plurality of the cross rods 14 are fixed between every two adjacent vertical rods 13.

The vertical rods 13 and the cross rods 14 are made of steel bars, and the first plate 10 and the second plate 11 are formed by pouring the reinforcing frame 12 and concrete.

The precast energy dissipation unit 8 and the step 2 are cast, molded and fixed.

The stilling pool 6 is of a concave arc shape, and a plurality of toe blocks 7 arranged at intervals are uniformly distributed at one end of the stilling pool 6 facing the downstream.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. It will be apparent to those skilled in the art that modifications and improvements can be made to the above-described embodiments without departing from the spirit and scope of the invention. Accordingly, it will be appreciated that those skilled in the art, upon attaining an understanding of the foregoing may readily produce alterations to, variations of, and equivalents to these embodiments without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A continuous energy dissipation structure of spillway, comprising: the energy dissipation dam comprises a flood overflowing dam (5), flood overflowing tunnels (15), side walls (1), steps (2), a stilling pool (6) and energy dissipation units (8), wherein the flood overflowing dam (5), the flood overflowing tunnels (15) and the stilling pool (6) are sequentially connected from top to bottom, the side walls (1) are fixed on two sides of the flood overflowing tunnels (15), a plurality of the steps (2) are uniformly distributed on the flood overflowing tunnels (15), and a plurality of rows of the energy dissipation units (8) are mounted on the steps (2);

the energy dissipation units (8) each comprise: the device comprises a first plate (10), a second plate (11) and energy dissipation holes (9), wherein the lower ends of the first plate (10) and the second plate (11) are fixed to the bottom surface of a spillway (15), the first plate (10) and the second plate (11) incline to the downstream of water flow, the first plate (10) and the second plate (11) are symmetrically arranged relative to the water flow direction, the first plate (10) and the second plate (11) are arranged in a crossed mode with the water flow direction, and the first plate (10) and the second plate (11) are provided with the energy dissipation holes (9) through which multiple rows of water flow pass from top to bottom.

2. A continuous energy dissipating structure for spillways according to claim 1, characterized in that adjacent sides of the first (10) and second (11) panels are fixedly connected to form a folded plate structure, and the angle of the folded plate of the first (10) and second (11) panels is less than 180 ° towards the side of the spillway dam (5).

3. A spillway continuous energy dissipation structure according to claim 1 or 2, characterized in that the height of the first (10) and second (11) plates is 1.5-2.5 times the height of a single step (2).

4. A spillway continuous energy dissipation structure according to claim 1 or 2, characterized in that the energy dissipation units (8) on a single step (2) are arranged in two rows, including a front row of energy dissipation units (3) and a rear row of energy dissipation units (4), the front row of energy dissipation units (3) and the rear row of energy dissipation units (4) are arranged in front of each other, and the energy dissipation units (8) of the front row of energy dissipation units (3) and the rear row of energy dissipation units (4) are arranged in a staggered manner.

5. A spillway continuous energy dissipating structure according to claim 3, wherein the energy dissipating unit (8) further comprises a reinforcing frame (12), the reinforcing frame (12) being fixed to the first plate (10) and the second plate (11), the reinforcing frame (12) being used for enhancing the impact strength of the energy dissipating unit (8).

6. A continuous energy dissipating structure for spillways according to claim 5, wherein the reinforcing frame (12) comprises: montant (13) and horizontal pole (14), montant (13) are three, three montant (13) are followed the folded plate column structure of board one (10) and board two (11) evenly sets up, every adjacent two all be fixed with many between montant (13) horizontal pole (14).

7. A continuous energy dissipation structure for spillways according to claim 6, wherein the vertical rods (13) and the cross rods (14) are made of steel bars, and the first plate (10) and the second plate (11) are made of concrete and the reinforcing frame (12) by pouring.

8. A spillway continuous energy dissipating structure according to claim 7, characterized in that the pre-cast energy dissipating units (8) are cast fixed to the steps (2).

9. A continuous energy dissipation structure for spillways according to claim 1 or 8, characterized in that the stilling pool (6) is of a concave arc shape, and a plurality of spaced apart toe blocks (7) are uniformly distributed at the downstream end of the stilling pool (6).