Multifunctional ecological weir

Abstract

The utility model relates to the field of hydraulic engineering, in particular to a multifunctional ecological weir. The multifunctional ecological weir comprises a weir body, a water turning hopper, a traffic bridge, a water diversion channel and a stilling pool, the weir body is a water retaining building and achieves the basic functions of damming and water stopping, and the traffic bridge is arranged above the weir body and allows vehicles and pedestrians to pass through; the center of the downstream of the weir body is provided with a plurality of stages of water overturning buckets capable of automatically overturning, the left side and the right side of each water overturning bucket are connected with the wing walls on the two sides of the weir body respectively, and the water overturning buckets are overturned into slopes to form fishways for biological migration during water drainage; a water diversion channel is arranged on one side of the weir body to guarantee production and domestic water of downstream villages, and a stilling pool is arranged on the downstream of the weir body to prevent a downstream river channel from being scoured. On the basis that a traditional water conservancy facility guarantees river channel flood discharge scouring safety, harmony of water ecology and water landscapes is considered, and good comprehensive benefits are obtained.

Description

Technical Field

[0001] The utility model relates to the field of water conservancy projects, in particular to a multifunctional ecological weir. Background Art

[0002] The construction of traditional weirs is mainly used in water conservancy fields such as irrigation, river control and flood control projects. The main functions are to regulate water flow, control water levels, protect downstream and utilize water resources. However, the construction of weirs blocks the natural river channel, causing changes in the flow pattern of the river channel, siltation, and blocking the natural migration channel of aquatic organisms. Therefore, it is necessary to overcome the existing technical problems and construct a multifunctional ecological weir structure that can freely and flexibly rotate and release water on the basis of the single water retaining function of the traditional weir to form a biological migration channel and water landscape. Utility Model Content

[0003] The purpose of the utility model is to provide an ecological weir with beautiful plane and facade shapes and multiple functions such as traffic passage, water supply, fish passage and ecological release, in response to the problems existing in the existing weirs, which can be widely used in the fields of water conservancy, transportation and environmental engineering.

[0004] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0005] The multifunctional ecological weir comprises a weir body, a water diversion channel, a water turning bucket and an energy dissipation pool. The weir body is a water retaining structure, which realizes the basic function of damming and holding back water: a multi-level automatically flipping water turning bucket is arranged in the center of the downstream of the weir body, and each level of the water turning bucket is provided with one. The left and right sides of the water turning bucket are respectively connected to the wing walls on both sides of the weir body. When the water in the water turning bucket is full, it turns over to discharge water, forming a series slope fishway for biological migration and creating a waterfall landscape; after the water discharge is completed, the water turning bucket returns to its initial horizontal position and stores water again; a water diversion channel is arranged on one side of the weir body to ensure the production and living water for the downstream villages; an energy dissipation pool is arranged downstream of the weir body to prevent scouring of the downstream river channel.

[0006] Preferably, the water-turning bucket is in the shape of an ellipsoidal shell with a "large upper opening and a small lower opening"; the water-turning bucket is an eccentric mass body.

[0007] Preferably, the left and right sides of each level of the water bucket are fixedly connected with a rotating shaft, the wing wall is fixedly connected with a rolling bearing, and the rotating shaft is rotatably connected to the wing walls on both sides through the rolling bearing; the upper and lower level water buckets are independent of each other.

[0008] Preferably, an ecological flow discharge hole is provided in the middle of the weir body to replenish the downstream ecological flow all year round and also serve as a fish passage hole.

[0009] Preferably, a traffic bridge is provided above the weir body for vehicles and pedestrians to pass through when the water level is low, and for flood water from upstream to flow through when the water level is high.

[0010] The construction method of the present utility model includes the following steps:

[0011] S1. Determine the height of the traffic bridge, the height of the weir crest, and the orifice size of the ecological flow discharge hole according to the downstream discharge, and comprehensively determine the width of the weir crest according to the pedestrian traffic requirements;

[0012] S2. Set the elevation and size of the intake channel orifice lower than the orifice elevation of the ecological flow discharge hole according to the elevation of the ecological flow discharge hole and the diversion flow;

[0013] S3. Determine the morphological structure size of the tipping bucket and the fixed position of the rotating shaft according to the tipping conditions such as the downstream discharge and the change of the center of gravity of the stored water, to meet the functional requirements of "tipping when empty and overturning when full";

[0014] S4. Determine the number and fixed position of the tipping buckets according to the planar layout, height, and structural size of the weir;

[0015] S5. Determine the length and depth of the stilling basin according to the downstream flood discharge and velocity.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The multi-functional ecological weir of the present utility model provides solutions for the transformation of water conservancy projects from traditional flood control to aspects such as water resource allocation, water environment improvement, and river and lake health restoration.

[0018] The present utility model has the following multiple functions:

[0019] (1) By setting a tipping bucket device that automatically flips with the change of the center of gravity after storing water, the water is discharged freely and flexibly, forming a biological migration channel and a water landscape.

[0020] (2) By setting ecological flow discharge holes, the ecological flow downstream of the weir is guaranteed, and the continuity of the river habitat is maintained.

[0021] (3) By setting a dedicated intake channel to allocate and divert the downstream discharge, water resources are fully utilized to ensure the domestic drinking water source for the residents of downstream villages.

[0022] (4) By setting a traffic bridge above the weir body, it can be used for vehicles and pedestrians to pass through usually and can pass water during the flood period, integrating transportation with water conservancy projects, saving land and funds. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the planar structure diagram of the present utility model;

[0024] Figure 2 is Figure 1 the sectional view of

[0025] Figure 3 is the elevation structure diagram of the ecological weir;

[0026] Figure 4 is the structural diagram of a rolling bearing;

[0027] Figure 5 is the flow chart of the construction method of the present utility model.

[0028] In the figure: 1 - weir body; 2 - ecological flow discharge hole; 3 - diversion channel; 4 - water turning bucket; 5 - rotating shaft; 6 - rolling bearing; 7 - wing wall; 8 - stilling basin; 9 - traffic bridge. Specific implementation manners

[0029] To make the purpose and technical solutions of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings.

[0030] As Figures 1 to 4 shown, a multifunctional ecological weir of the present utility model includes a weir body 1, an ecological flow discharge hole 2, a diversion channel 3, a water turning bucket 4, a rotating shaft 5, a rolling bearing 6, a wing wall 7, a stilling basin 8, and a traffic bridge 9. The weir body 1 is a water retaining structure for realizing the function of raising water level. An ecological flow discharge hole 2 is arranged in the middle of the weir body 1 to discharge water all year round to supplement the downstream ecological flow and also serve as a fish passage; a multi-stage "ellipsoidal shell" water turning bucket 4 that can automatically turn is arranged in the center of the downstream of the weir body 1. The left and right sides of each stage of the water turning bucket 4 are fixedly connected with a rotating shaft 5. A rolling bearing 6 is fixedly connected to the wing wall 7. The rotating shaft 5 is rotatably connected to the wing walls 7 on both banks through the rolling bearing 6; the upper and lower stages of the water turning bucket 4 are independent of each other; the water turning bucket 4 is connected to the wing wall 7 through the rotating shaft 5 and the rolling bearing 6. After the water turning bucket 4 is filled with water, the center of gravity continuously rises. When the center of gravity is higher than the height of the rotating shaft 5, the water turning bucket 4 automatically turns, sequentially transporting the water volume. After the water drops, the flow velocity is reduced. At the same time, after the water turning bucket 4 is tilted, it turns into a slope, reducing the height difference between each stage of the water turning bucket 4 to form a biological migration channel; when the water turning bucket 4 has completed water discharge and the center of gravity is lower than the height of the rotating shaft 5, the water turning bucket 4 returns to its initial position to form a water storage landscape. A traffic bridge 9 is arranged on the upper part of the weir body 1, allowing vehicles and pedestrians to pass during the dry season and directly passing through floodwater during the flood season to increase the water passing section; a diversion channel 3 is arranged on one side of the weir 1 to divert and distribute water resources in proportion for the domestic use of the residents in the downstream villages; the stilling basin 8 slows down the flow velocity of the downstream water flow and adopts submerged energy dissipation.

[0031] As Figure 5 shown, the construction method of the present utility model includes the following steps:

[0032] S1. Determine the height of the traffic bridge 9, the crest height of the weir body 1, and the orifice size of the ecological flow discharge hole 2 according to the downstream discharge, and comprehensively determine the crest width according to the pedestrian traffic requirements;

[0033] S2. Set the elevation and dimensions of the three orifices of the diversion channel lower than the elevation of the two orifices of the discharge orifice for the ecological flow according to the elevation of the discharge orifice and the diversion flow rate.

[0034] S3. Determine the morphological structure dimensions of the tipping bucket 4 and the fixed positions of the rotating shaft 5 and the rolling bearing 6 according to the tipping conditions such as the discharged flow rate and the change of the center of gravity of the stored water, so as to meet the functional requirements of "tipping when empty and overturning when full".

[0035] S4. Determine the number and fixed positions of the tipping buckets 4 according to the plane layout, height and structural dimensions of the weir body 1.

[0036] S5. Determine the length and depth of the stilling basin 8 according to the discharged flood flow rate and velocity.

[0037] The above are only the preferred embodiments of the present utility model, and do not impose any formal restrictions on the present utility model. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. Multifunctional ecological weir, characterized in that: It includes a weir body, a water tipping bucket, a water diversion channel, and an energy dissipation pool. The weir body is a water-blocking structure. A multi-level automatically flipping water tipping bucket is arranged in the center of the downstream of the weir body. Each level of the water tipping bucket is provided with one. The left and right sides of the water tipping bucket are respectively connected to the wing walls on both sides of the weir body. When the water in the water tipping bucket is full, it flips and discharges water to form a series slope fishway for biological migration and produce a waterfall landscape; after the water discharge is completed, the water tipping bucket returns to the initial horizontal position and then stores water; a water diversion channel is arranged on one side of the weir body to ensure the production and living water for the downstream villages; an energy dissipation pool is arranged downstream of the weir body to prevent scouring of the downstream river channel.

2. The multifunctional ecological weir according to claim 1, characterized in that: The shape of the water-turning bucket is an ellipsoidal shell with a large upper opening and a small lower opening; the water-turning bucket is a mass eccentric body.

3. The multi-functional ecological weir according to claim 1, characterized in that: The left and right sides of each level of the water bucket are fixedly connected with a rotating shaft, the wing wall is fixedly connected with a rolling bearing, and the rotating shaft is connected to the wing walls on both sides through the rolling bearing; the upper and lower water buckets are independent of each other.

4. The multi-functional ecological weir according to claim 1, characterized in that: An ecological flow spillway is provided in the middle of the weir body to replenish the downstream ecological flow all year round and also serve as a fish passage hole.

5. The multi-functional ecological weir according to claim 1, characterized in that: A traffic bridge is arranged above the weir body for vehicles and pedestrians to pass through when the water level is low and for floods from upstream to flow through when the water level is high.

6. The multifunctional ecological weir according to claim 4, characterized in that: The orifice bottom elevation of the water diversion channel is lower than the orifice bottom elevation of the ecological flow spillway.

Images