CN215977139U

CN215977139U - Ecological overflow weir

Info

Publication number: CN215977139U
Application number: CN202121760261.5U
Authority: CN
Inventors: 艾志强; 刘伟; 罗跃辉; 吴优; 杨颢宇; 姬思雨; 孙永康; 古宇翔
Original assignee: Yunnan Institute Of Water Conservancy And Hydropower Investigation And Design
Current assignee: Yunnan Institute Of Water Conservancy And Hydropower Investigation And Design
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-03-08
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses an ecological overflow weir, which comprises an overflow dam and a sand washing gate, wherein the overflow dam is connected with the sand washing gate, the sand washing gate is arranged on the horizontal plane and is vertical to a river bank at one side of a river channel, the overflow dam and the river channel form an angle of 30 degrees, the angle direction of the overflow dam is opposite to the water flow direction, one side of the overflow dam opposite to the sand washing gate is a fishway, and the overflow dam is mainly used for water blocking and aeration; after overflowing from the overflow weir, the water finally flows into the fishway to replenish the fishway, thereby creating conditions for fish migration. The 30-degree angle mainly has the energy dissipation effect, and the gravel in the fishway has a certain energy dissipation effect after water flows into the fishway. The fishway can be used as a fish migration channel, and meanwhile, ecological flow is discharged downwards in a dry period.

Description

Ecological overflow weir

Technical Field

The utility model relates to the field of overflow weirs, in particular to an ecological overflow weir.

Background

The overflow weir of current structure only possesses the function of water blocking aeration, and can block off the riverbed, can accumulate and can not the migratory, and ecological flow can not let off down in the withered period, and when sand volume was big in addition, can cause overflow weir to block up the inefficacy.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an ecological overflow weir, which solves the ecological problems and solves the defects in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an ecological overflow weir, includes overflow dam and sand washing floodgate, and the overflow dam is connected with the sand washing floodgate, and the sand washing floodgate sets up perpendicular to one side bank of river course on the horizontal plane, and the overflow dam is 30 jiaos with the river course, and its angular direction sets up with the rivers direction in opposite directions, and one side of overflow dam for the sand washing floodgate is the fishway.

Preferably, the overflow dam is of a slope structure at one side of the fishway.

Preferably, the fishway is provided with gravels at the end position of the overflow dam, the gravels are vertically arranged, the height of the gravels is consistent with that of the overflow dam, and gaps exist among the gravels.

Preferably, gravels are distributed and placed in the fishway.

The beneficial effect of adopting above technical scheme is: the overflow dam is mainly used for water blocking and aeration; after overflowing from the overflow weir, the water finally flows into the fishway to replenish the fishway, thereby creating conditions for fish migration. The 30-degree angle mainly has the energy dissipation effect, and the gravel in the fishway has a certain energy dissipation effect after water flows into the fishway. The fishway can be used as a fish migration channel, and meanwhile, ecological flow is discharged downwards in a dry period.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Wherein, the water channel is 1-river channel, the overflow dam is 2-overflow dam, the sand washing gate is 3-sand washing gate, the fishway is 4-fishway, and the gravel is 5-gravel.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 shows a specific embodiment of the utility model: the utility model provides an ecological overflow weir, includes overflow dam and sand washing floodgate, and the overflow dam is connected with the sand washing floodgate, and the sand washing floodgate sets up perpendicular to one side bank of river course on the horizontal plane, and the overflow dam is 30 jiaos with the river course, and its angular direction sets up with the rivers direction in opposite directions, and one side of overflow dam for the sand washing floodgate is the fishway.

One side of the overflow dam, which is positioned on the fishway, is of a slope structure, gravels are placed at the end position of the fishway, the gravels are placed in the vertical direction, the height of the gravels is consistent with that of the overflow dam, gaps exist among the gravels, and the gravels are distributed in the fishway.

The leftmost side is the sand sluice gate, and flood season can regard as the flood discharge floodgate simultaneously, and the middle is the overflow dam, and the overflow dam becomes 30 degrees contained angles with the river course, and the structure is concrete structure. The overflow dam is mainly used for water blocking and aeration; after overflowing from the overflow weir, the water finally flows into the fishway to replenish the fishway, thereby creating conditions for fish migration. The 30-degree angle mainly has the energy dissipation effect, and the gravel in the fishway has a certain energy dissipation effect after water flows into the fishway. The fishway can be used as a fish migration channel, and meanwhile, ecological flow is discharged downwards in a dry period.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. An ecological overflow weir is characterized by comprising an overflow dam and a sand washing gate, wherein the overflow dam is connected with the sand washing gate, the sand washing gate is arranged on a horizontal plane and is vertical to a bank on one side of a river channel, the overflow dam and the river channel form an angle of 30 degrees, the angle direction of the overflow dam is opposite to the water flow direction, and one side of the overflow dam opposite to the sand washing gate is a fishway; the overflow dam is of a slope structure at one side of the fishway; gravel is placed at the end position of the overflow dam in the fishway, the gravel is placed in the vertical direction, the height of the gravel is consistent with that of the overflow dam, and gaps exist among the gravel; gravels are distributed in the fishway.