CN215105159U

CN215105159U - Stilling pool tail sill

Info

Publication number: CN215105159U
Application number: CN202120526900.5U
Authority: CN
Inventors: 张靖; 张庆华
Original assignee: Shandong Agricultural University
Current assignee: Shandong Agricultural University
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-12-10
Anticipated expiration: 2031-03-15

Abstract

The utility model belongs to the technical field of hydraulic structure design, a pool tail threshold disappears is disclosed, is provided with: the upper reaches flat slope section, upper reaches flat slope section low reaches is connected with the slope section, slope section lower extreme and absorption basin section are connected, be provided with multirow and rivers direction vertically stake in the absorption basin section, multirow stake adopts plum blossom stake formula arrangement mode. The pile column type tail sill stilling pool not only can increase a fish-passing sand-passing channel, increase water body exchange capacity, reduce back flow and secondary scouring effect behind the sill, but also can realize stilling pool energy dissipation formed in front of a pile, and simultaneously form a certain submergence degree for further energy dissipation and increase front backwater effect of the pile, so that a front row has a certain shielding effect on a rear row, the diffusion of front row wake flow can be restricted, and the diffusion of rear row wake flow can also be superposed with the front row effect; and energy dissipation can be realized by utilizing the energy of water flow passing through the pile group, so that the energy dissipation effect is improved.

Description

Stilling pool tail sill

Technical Field

The utility model belongs to the technical field of hydraulic structure design, especially, relate to a stilling pool tail threshold.

Background

At present: along with the needs of social development, urban development, environmental protection and the like, the thought provided for the industrial buildings is more diversified by combining the perfection of scientific theories such as hydraulics, theoretical mechanics and the like, the energy dissipation capacity of the original stilling pool is not enough to meet the requirements of functionality, ecology and comprehensiveness of the water conservancy reform development thought of the new era, and the existing stilling pool does not have the function of enriching a river channel, so that a novel sill type stilling pool type is urgently needed.

Through the above analysis, the problems and defects of the prior art are as follows: the energy dissipation capacity of the original stilling pool is not enough to meet the requirements of functionality, ecology and comprehensiveness of the water conservancy reform development idea in the new era, and the existing stilling pool does not have the function of enriching river channels.

The difficulty in solving the above problems and defects is: traditional entity tail sill absorption basin utilizes water jump dissipation water energy, has had more research, nevertheless because the physical property nature of tail sill, leads to the tail sill to meet rivers direct impact, the tail sill rear end forms certain backward flow district and easily appears cavitation phenomenon, has simultaneously influence water exchange, goes out pool rivers flow state difference, even because the local of tail sill is raised and is induced pool rivers to the secondary of river course and erode the scheduling problem. The application provides a novel sill type stilling pool type considering functionality, ecology and comprehensiveness on the basis of keeping the capacity of a traditional stilling pool.

The significance of solving the problems and the defects is as follows: solid tailgates remain the most commonly used type of tailgate. Although the tooth-shaped tail sill and the orifice plate tail sill are improved to a certain extent, the tooth-shaped tail sill and the orifice plate tail sill have respective problems, such as easy occurrence of local cavitation erosion, difficult sand passing, fish passing and the like; the pile column type sill absorption basin provided on the basis of the new types aims to further solve the problems of the sill and has certain scientific research significance.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists, the utility model provides a pool tail sill disappears.

The utility model discloses a realize like this, a pond sill that disappears is provided with: the device comprises an upstream flat slope section, wherein a slope section is connected to the downstream of the upstream flat slope section, the lower end of the slope section is connected with a stilling pool section, and a plurality of rows of piles vertical to the water flow direction are arranged in the stilling pool section.

Furthermore, the multiple rows of pile columns are arranged in a quincuncial pile type mode. The specific arrangement scheme is as follows: determining the position of a tail sill of the stilling pool according to the design specification of the solid stilling pool, and arranging a first row of piles; the second row, the third row, etc. are arranged at a distance. For convenient design and construction, odd rows (or even rows) are arranged in alignment, and adjacent rows are arranged in a staggered way, so that a quincuncial pile type arrangement mode is formed.

Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are: this kind of stake formula tail sill pool that disappears of this kind of novel proposed not only can play the increase and cross the husky passageway of fish, increases water exchange capacity, reduces backward flow behind the sill and secondary erodees the effect, realizes the pool energy dissipation that disappears that can form before the stake in addition, and the energy dissipation that usable rivers pass through stake crowd improves the energy dissipation effect again.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a plane layout view of a stilling pool tail sill provided by the embodiment of the utility model.

Fig. 2 is a cross-sectional layout view of the sill of the stilling pool provided by the embodiment of the present invention.

In the figure: 1. an upstream flat slope section; 2. a slope section; 3. a stilling pool section; 4. and (5) a pile.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

To the problem that prior art exists, the utility model provides a pool tail sill disappears, it is right below combining the figure the utility model discloses technical scheme makes detailed description.

As shown in fig. 1-2, the utility model provides a stilling pool tail threshold is provided with: the upper reaches flat slope section 1, upper reaches flat slope section low reaches is connected with

slope section

2, 2 lower extremes of slope section are connected with the pool section of exerting oneself 3, be provided with multirow and rivers direction vertically stake 4 in the pool section of exerting oneself 3, multirow stake 4 adopts plum blossom stake formula arrangement mode.

The utility model discloses when using, rivers take place the hydraulic jump in the absorption basin, take place the collision with stake 4 and form turbulent motion when the section of thick bamboo district of crossing, therefore produce the energy dissipation effect. Meanwhile, in order to further dissipate energy and increase the front water damming effect of the pile columns to form a certain submergence, the multiple rows of pile columns 4 adopt a quincuncial pile type arrangement mode, so that the front row has a certain shielding effect on the rear row, the diffusion of the front row wake flow is restricted, and the diffusion of the rear row wake flow is superposed with the front row effect.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.

Claims

1. The utility model provides a stilling pool tail threshold which characterized in that, stilling pool tail threshold is provided with:

an upstream flat slope section;

the lower part of the upstream flat slope section is connected with a slope section, the lower end of the slope section is connected with a stilling pool section, and a pile column vertical to the water flow direction is arranged in the stilling pool section.

2. The stilling pool tail sill of claim 1, wherein the rows of piles are arranged in a quincuncial pile arrangement.

3. A stilling pool sill according to claim 2, characterized in that a first row of piles is arranged; the second and third rows are arranged at a distance.

4. A stilling pool sill as claimed in claim 3, wherein the odd or even rows are in alignment and adjacent rows are staggered.

5. The stilling pool tail sill of claim 1, wherein a plurality of rows of piles perpendicular to the direction of water flow are provided in the stilling pool section.