CN210049213U

CN210049213U - Spillway layering energy dissipation chute

Info

Publication number: CN210049213U
Application number: CN201920687953.8U
Authority: CN
Inventors: 胡娟; 刘昊
Original assignee: PowerChina Zhongnan Engineering Corp Ltd
Current assignee: PowerChina Zhongnan Engineering Corp Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-02-11
Anticipated expiration: 2029-05-15

Abstract

The utility model discloses an overflow spillway layering energy dissipation chute, include along the at least two-stage chute that overflow spillway arranged, the bottom of chute at different levels sets up stilling pond (2, 4) respectively, and the stilling pond water outlet end of first to n-1 st level chute sets up tail mound weir (5), and the stilling pond water outlet end of nth level chute sets up tail mound (6). The tail pier weir is in the shape of a practical weir, a wide top weir or a hump weir. The utility model discloses fall into the at least two-stage chute of arranging along the spillway with the chute, carry out the successive layer energy dissipation, alleviate the washing away of bottom stilling basin and riverbed effectively, alleviate the harm to other buildings in low reaches river course.

Description

Spillway layering energy dissipation chute

Technical Field

The utility model relates to an overflow spillway chute, especially an overflow spillway layering energy dissipation chute.

Background

In water conservancy and hydropower engineering, a spillway is a common water outlet structure, and a chute is an important component of the spillway. The spillway is divided into a shoreside spillway and a riverbed spillway. The spillway chute at the bank side is often long, the investment of the spillway is mainly concentrated on the spillway chute, and therefore the arrangement of the spillway chute is very important. For the long chute, because the length is long and the potential energy is large, if energy dissipation is directly carried out on the bottom, huge scouring can be caused on bottom energy dissipation buildings and riverbeds, and other buildings of a downstream riverway can be damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, it is not enough to overcome prior art, provides one kind and can realize the successive layer energy dissipation, effectively alleviates the spillway layering energy dissipation chute to the washing away of bottom energy dissipation building and riverbed.

In order to solve the technical problem, the utility model provides an overflow spillway layering energy dissipation chute, include along the at least two-stage chute that overflow spillway arranged, the bottom of the chute at different levels sets up the stilling pool respectively, and the stilling pool water outlet end of first to the nth-1 st stage chute sets up the tail mound weir, and the stilling pool water outlet end of nth stage chute sets up the tail mound.

Further, the tail pier weir is in the shape of a utility weir, a broad top weir or a hump weir.

The utility model discloses to let out the whole chute that falls into the chute more than the two-stage of chute, every level of chute sets up the stilling pond respectively, and the stilling pond water outlet end of first to nth-1 level chute sets up tail mound weir, and the stilling pond water outlet end of nth level chute sets up the tail mound to utilize the chutes at different levels to carry out the energy dissipation section by section, make the energy that reaches the final level stilling pond as far as possible little. The tail pier weir is not only a tail structure of the stilling pool and a part of an energy dissipation structure, but also a starting point of a next-stage chute, and is made into a weir shape, so that the overflowing can be smooth.

Compared with the prior art, the utility model has the advantages of:

(1) energy dissipation is carried out layer by layer, so that the scouring of the bottom stilling basin and the riverbed is effectively reduced, and the damage to other buildings of the downstream riverway is reduced.

(2) The landform is fully utilized for arrangement, and the excavation amount and the investment are reduced.

Drawings

Fig. 1 is a longitudinal sectional view of the present invention.

In the figure: 1-first stage draining groove; 2-a stilling pool; 3-second stage draining; 4-a stilling pool; 5, a tail pier weir; 6-tail pier.

Detailed Description

The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.

For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.

Example 1:

as shown in fig. 1, the utility model discloses spillway layering energy dissipation chute embodiment includes first order chute 1, stilling pool 2, tail mound weir 5, second level chute 3, stilling pool 4, tail mound 6 etc.. The first-stage chute 1 and the second-stage chute 3 are arranged along the water flow direction of the spillway, the bottom of the first-stage chute 1 is provided with a stilling pool 2 and a tail pier weir 5, the bottom of the second-stage chute 3 is provided with a stilling pool 4 and a tail pier 6, and energy dissipation is carried out section by section through the first-stage chute 1 and the second-stage chute 3, so that the energy reaching the last-stage stilling pool 4 is as small as possible. The shape of the tail pier weir 5 is a practical weir, a broad top weir or a hump weir, the tail pier weir 5 is not only the tail structure of the stilling pool 2 and is used as a part of an energy dissipation structure, but also the starting point of the next-level chute (the second-level chute 3), and the tail pier weir 5 is made into a weir shape, so that the weir can be smoothly overflowed.

In the above embodiment, the two-stage chute is taken as an example for explanation, but it is obvious that the present invention is not limited to the two-stage chute, and in the specific implementation, n-stage chutes and n-stage stilling pools may be provided as required, where n is an integer greater than 2.

The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.

Claims

1. The layered energy dissipation spillway comprises at least two levels of spillways arranged along the spillway, and is characterized in that stilling ponds (2 and 4) are respectively arranged at the bottoms of the levels of spillways, the water outlet ends of the stilling ponds of the first to (n-1) th levels of spillways are provided with tail pier weirs (5), and the water outlet end of the stilling pond of the nth level of spillway is provided with a tail pier (6).

2. The spillway layered energy dissipation chute of claim 1, wherein the tail pier weir is in the form of a utility weir, a wide top weir or a hump weir.