Landscape ecological dam noise reduction structure

Abstract

The present invention discloses a landscape ecological dam noise reduction structure, comprising a dam body disposed transversely within a river channel and connected to the riverbanks on both ends. The side of the dam body facing upstream of the river channel serves as a vertically arranged upstream dam surface, while the side of the dam body facing away from the upstream of the river channel serves as an inclined downstream dam surface. The downstream dam surface is covered with a waterfall structure comprising a plurality of gradually decreasing steps, each step consisting of a plurality of connected fish-scale-shaped step units. A culvert extending along the riverbank is disposed between the dam body and the riverbank, and a flow control device is provided within the culvert. While enhancing the landscape effect, the present invention can also reduce the falling velocity of water through the fish-scale-shaped curved structure, thereby improving the dam body's energy dissipation effect on the falling water flow and reducing the noise of the falling water flow.

Description

Technical Field

[0001] The invention relates to the technical field of river resource development, in particular to a landscape ecological dam noise reduction structure. Background Art

[0002] Many projects incorporate river channel regulation into their environmental projects, such as building dams. These dams can create scenic water features and waterfalls, improving the river's ecological environment. These dams are often referred to as ecological dams. However, due to the water level difference between upstream and downstream of the dam, water release can generate significant noise pollution, affecting the landscape and viewing experience, and impacting the lives of nearby residents.

[0003] The current measure for silencing water retaining dams is mainly to reduce the water level difference upstream and downstream of the dam. This solution requires re-water storage after releasing water. If there is less water from upstream, it will take a long time to store water, causing the scenic water surface and scenic waterfall of the dam to be cut off, seriously affecting the landscape effect of the dam; and the water storage process may also cause the downstream river to be cut off, affecting the river water ecology. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a landscape ecological dam noise reduction structure with lower noise.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a landscape ecological dam noise reduction structure, including a dam body arranged horizontally in the river channel and connected to the river banks on both sides of the river channel at both ends, the side of the dam body facing the upstream of the river channel is a vertically arranged upstream dam surface, and the side of the dam body away from the upstream of the river channel is an inclined downstream dam surface, and the downstream dam surface is covered with a waterfall structure composed of a plurality of waterfall steps with decreasing heights, and each waterfall step is composed of a plurality of fish-scale step monomers connected together; a culvert arranged along the extension direction of the river bank is also provided between the dam body and the river bank of the river channel, and a flow control device is provided in the culvert.

[0006] Furthermore, the culvert is embedded in the river bank of the river, and an upstream inlet communicating with the upstream of the river and a downstream outlet communicating with the downstream of the river are respectively provided at both ends of the culvert.

[0007] Furthermore, both ends of the culvert are bent so that the upstream inlet and the downstream outlet are both arranged in a direction parallel to the dam body.

[0008] Furthermore, the end bend of the culvert located in the downstream direction of the river channel is an arc-shaped bend structure.

[0009] Furthermore, the flow control device is an air shield dam arranged in the culvert and close to the upstream direction of the river channel.

[0010] Furthermore, the air shield dam includes a shield plate, an airbag and a limiting belt. The bottom of the shield plate is movably connected to the culvert, and the top of the shield plate is connected to the culvert through a limiting belt. The airbag is arranged between the shield plate and the culvert and is connected to the air source through an inflation and exhaust pipe. The airbag drives the shield plate to rotate through its own inflation and exhaust action.

[0011] Furthermore, there is a height difference between the upstream inlet of the culvert and the inner cavity channel of the culvert, and the bottom surface height of the upstream inlet is greater than the bottom surface height of the inner cavity channel of the culvert.

[0012] Furthermore, the dam body is a concrete panel bonded sand and gravel structure.

[0013] Furthermore, the waterfall steps are staggered and arranged step by step, and the connection between adjacent step units in the upper waterfall step is directly opposite to the step units in the lower waterfall step.

[0014] Furthermore, it also includes an energy dissipation pool and an anti-scouring trough arranged in sequence in front of the downstream dam face.

[0015] The beneficial effects of the present invention are as follows: the present invention improves the dam body structure of the water retaining dam and arranges a fish-scale waterfall structure on the downstream dam surface of the dam body, thereby forming a fish-scale waterfall landscape on the dam body. While improving the landscape effect, the fish-scale arc structure can slow down the falling speed of the water flow, thereby improving the falling energy dissipation effect of the dam body on the water flow and reducing the noise of the waterfall water flow; at the same time, the present invention arranges a culvert between the end of the dam body and the river bank, and arranges a flow control device in the culvert to control the flow state between the upstream and downstream of the river channel, thereby effectively improving the energy dissipation and noise reduction effects; the present invention can couple shore hydrophilic trails, infinity swimming pools, kayaking, cultural leisure and entertainment, beach sand sculptures, fitness and extreme sports, live performances, fountains, music and lights, etc. with water surface landscape waterfalls, which has a positive promoting effect on promoting local ecological development, alleviating the living pressure of urban people, enhancing people's awareness of environmental protection, improving the quality of nearshore hydrophilic life, and improving the ecological environment of rivers and lakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A top view of the present invention;

[0017] Figure 2 is a side sectional view of the present invention;

[0018] Figure 3 is a floor plan implicit in the present invention;

[0019] Figure 4 is a cross-sectional view of the upstream inlet of the present invention;

[0020] The markings in the figure are: 100-river channel, 200-dam body, 210-upstream dam surface, 220-downstream dam surface, 300-water drop steps, 400-culvert, 410-upstream inlet, 420-downstream outlet, 510-shield, 520-airbag, 530-limiting belt, 540-inflating and exhaust pipe, 600-stilling pool, 700-anti-scouring trough. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "front", "rear", "left", "right", "up", "down", and "inside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description. They do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] like Figure 1 and Figure 2 As shown, the landscape ecological dam noise reduction structure disclosed in the present invention improves the structure of a dam body 200 located within a river channel 100. The side of the dam body 200 facing upstream of the river channel 100 is a vertical upstream dam surface 210, and the side of the dam body 200 facing away from the upstream of the river channel 100 is an inclined downstream dam surface 220. The two ends of the dam body 200 are connected to the banks of the river channel 100. The improved solution of the present invention adds a fish-scale-shaped waterfall structure to the downstream dam surface 220 of the dam body 200. At the same time, a culvert 400 is added between the end of the dam body 200 and the bank of the river channel 100, and a flow control device is installed in the culvert 400. The dam body 200 can be constructed of concrete panels bonded with sand and gravel, and the waterfall steps 300 can be constructed of reinforced concrete.

[0024] In the present invention, the drop structure is optimized, and arrayed drop units are arranged on the downstream dam surface 220 to form drop steps 300 with gradually decreasing heights; the shape of the drop units is as follows: Figure 1As shown, the water drop unit is a fish-scale structure with an arc-shaped end. Depending on the actual construction situation, the width of the water drop unit can be set to 2.0m, and the height of the water drop unit can be set to 0.5m. The array of multiple water drop steps 300 forms a water drop structure on the downstream dam surface 220 that resembles the scales on the surface of a fish. The present invention uses a fish-scale water drop structure to gradually buffer and dissipate the energy of the water overflowing from the top of the dam body 200, thereby reducing the falling speed and potential energy of the water flow, thereby achieving the effect of reducing noise. Furthermore, after using the fish-scale water drop units, the arcs around the water drop units can guide the falling water flow, causing the falling water to flow along the curved edges of the water drop units, presenting a unique curved water surface landscape on the downstream dam surface 220. The water flow cascades along the water drop steps 300 to form a three-dimensional multi-layered landscape waterfall, greatly enhancing the overall aesthetics of the landscape ecological dam noise reduction structure.

[0025] The waterfall steps 300 are arranged in a staggered pattern, with the connections between adjacent step units in the previous waterfall step 300 aligning with the step units in the next waterfall step 300. As the water overflowing from the top of the dam body 200 flows along the curved edges of the fish-scale-shaped waterfall units, its flow path lengthens and its flow rate changes, thereby dissipating energy and further improving noise reduction. Furthermore, the present invention incorporates a flow control device within the culvert 400. This device can be used to control the flow rate between the upstream and downstream sides of the river channel 100. By controlling the flow of water from the upstream side of the river channel 100 into the culvert 400, the water surface elevation of the scenic area is stabilized and the scenic effect is maintained. The flow control device can also be used to control the flow and adjust the flow pattern.

[0026] like Figure 1 As shown, an energy dissipation pool 600 and an anti-scouring groove 700 may be added to improve the energy dissipation effect of the falling water flow and the impact force of the water flow. The energy dissipation pool 600 and the anti-scouring groove 700 are sequentially arranged in front of the downstream dam surface 220.

[0027] like Figure 1 and Figure 3As shown, the culvert 400 used in the present invention is embedded within the bank of the river channel 100. The culvert 400 extends along the river bank from the upstream of the river channel 100 to the downstream of the river channel 100. The interior of the culvert 400 is a hollow inner cavity channel. The culvert 400 is provided with an upstream inlet 410 connected to the upstream of the river channel 100 and a downstream outlet 420 connected to the downstream of the river channel 100 at both ends. In order to reduce the flow rate of the water flowing from the upstream of the river channel 100 when entering the upstream inlet 410 of the culvert 400 and reduce the flow rate of the water flowing in the culvert 400 when flowing into the downstream of the river channel 100 from the downstream outlet 420, the culvert 400 is bent at both ends so that the upstream inlet 410 and the downstream outlet 420 are both arranged in a direction parallel to the dam body 200. Furthermore, the end bend of the culvert 400 located in the downstream direction of the river channel 100 is set as an arc-shaped bend structure, which can further reduce the flow rate of the water in the culvert 400 when it flows from the downstream outlet 420 into the downstream of the river channel 100.

[0028] like Figure 4 As shown, the present invention further optimizes the structure of the culvert 400, and sets the bottom height of the upstream inlet 410 to be greater than the bottom height of the inner cavity channel of the culvert 400, that is, there is a height difference between the upstream inlet 410 of the culvert 400 and the inner cavity channel of the culvert 400. Through the above structural improvement, the inner cavity channel of the culvert 400 and the upstream inlet 410 cooperate to play the role of a stilling pool, which plays a role in falling and dissipating energy for the water flow entering the culvert 400 from the upstream of the river channel 100. In addition, for rivers with a smaller longitudinal slope, because they have good shallow water conditions for lake formation, multi-level landscape ecological dam noise reduction structures can also be set in the river channel 100 to form a larger area of ​​staggered cascading water surface, which has a stronger sense of three-dimensional space in the landscape. The landscape ecological dam noise reduction structures can also be interconnected through the culvert 400 to control the flow as a whole.

[0029] The flow control device provided in the culvert 400 of the present invention is an air shield dam, which is provided in the culvert 400 near the upstream direction of the river channel 100, that is, at the upstream inlet 410 mentioned above. Figure 4As shown, the main structure includes a shield plate 510, an air bag 520, and a limiting belt 530. The bottom of the shield plate 510 is movably connected to the culvert 400, and the top of the shield plate 510 is connected to the culvert 400 via the limiting belt 530. The air bag 520 is disposed between the shield plate 510 and the culvert 400 and is connected to the air source via the inflation and exhaust pipe 540. The inflation and exhaust of the air bag 520 drives the shield plate 510 to rotate. When the flow rate of water entering the culvert 400 needs to be reduced, the air bag 520 is inflated by the air source to expand. The inflation of the air bag 520 lifts the shield plate 510, causing the bottom of the shield plate 510 to rotate around the connection with the culvert 400, and the top of the shield plate 510 to rise. The shield plate 510 blocks the upstream inlet 410, reducing the size of the channel through which water can flow, thereby reducing the flow rate of water entering the upstream inlet 410. When it is necessary to increase the flow rate of water entering the culvert 400, the air bag 520 is deflated through the inflation and exhaust pipe 540, so that the air bag 520 is deflated and shrunk, and the lifting force of the air bag 520 on the shield plate 510 is reduced, and the shield plate 510 rotates downward in the opposite direction. The shield plate 510 blocks the upstream inlet 410 in a smaller area, and the size of the channel through which the water can flow becomes larger, thereby achieving the effect of increasing the flow rate of water entering the upstream inlet 410.

[0030] Compared with existing water retaining dams, the landscape ecological dam noise reduction structure disclosed by the present invention can take advantage of natural geographical advantages, consider the influence of natural factors, add modern floodlighting, landscape, interactive participation, interpretation and other technologies in the process of river resource development and utilization, integrate with nature, highlight the unique local advantageous resources, comprehensively develop and utilize, and promote economic development. The present invention combines waterscape factors with real scenes, fully taps the resources of lakeshore scenic area, complements each other, and can also be combined with local culture to form an interactive experience with local cultural temperament, determine the positioning and theme of the scenic area, display specific history, show the urban pattern, economic development, social changes and market culture, engrave cultural imprints, and let tourists feel the unique local historical memory and charm in the wonderful water space. Furthermore, the regional landscape and the water surface can be cleverly combined, and local cultural characteristics and local resources can be implanted to form a natural landscape. The overall atmosphere is full of birdsong, flowers and cicadas chirping, flowers in spring and leaves in autumn, and core landscape elements such as early autumn ginkgo and lotus pond moonlight highlight the theme of viewing and interaction.

Claims

1. A landscape ecological dam noise reduction structure, comprising a dam body (200) disposed transversely within a river channel (100) and connected at both ends to the riverbanks on both sides of the river channel (100), wherein a side of the dam body (200) facing the upstream of the river channel (100) is a vertically disposed upstream dam surface (210), and a side of the dam body (200) facing away from the upstream of the river channel (100) is an inclined downstream dam surface (220), characterized in that: A waterfall structure is laid on the downstream dam surface (220) and is composed of a plurality of waterfall steps (300) arranged with gradually decreasing heights. Each waterfall step (300) is composed of a plurality of fish-scale-shaped step monomers connected together. A culvert (400) is also provided between the dam body (200) and the river bank of the river channel (100) and is arranged along the extending direction of the river bank. A flow control device is provided in the culvert (400). The culvert (400) is embedded in the riverbank of the river channel (100), and an upstream inlet (410) communicating with the upstream of the river channel (100) and a downstream outlet (420) communicating with the downstream of the river channel (100) are respectively provided at both ends of the culvert (400); the two ends of the culvert (400) are bent so that the upstream inlet (410) and the downstream outlet (420) are both arranged in a direction parallel to the dam body (200); the end bend of the culvert (400) located in the downstream direction of the river channel (100) is an arc-shaped bending structure; The flow control device is an air shield dam arranged in the culvert (400) and close to the upstream direction of the river channel (100); the air shield dam comprises a shield plate (510), an air bag (520) and a limiting belt (530); the bottom of the shield plate (510) is movably connected to the culvert (400), and the top of the shield plate (510) is connected to the culvert (400) via the limiting belt (530); the air bag (520) is arranged between the shield plate (510) and the culvert (400) and is connected to the air source via the inflation and exhaust pipe (540); the air bag (520) drives the shield plate (510) to rotate through its own inflation and exhaust action; There is a height difference between the upstream inlet (410) of the culvert (400) and the inner cavity channel of the culvert (400), and the bottom surface height of the upstream inlet (410) is greater than the bottom surface height of the inner cavity channel of the culvert (400); The dam body (200) is a concrete panel bonded sand and gravel structure; the waterfall step (300) is a reinforced concrete structure; The water drop steps (300) are arranged in a staggered manner, and the connection between adjacent step monomers in the water drop step (300) of the previous level is directly opposite to the step monomers in the water drop step (300) of the next level; It also includes a stilling pool (600) and an anti-scouring groove (700) which are sequentially arranged in front of the downstream dam surface (220).

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