Tide barrier

Abstract

The utility model discloses a kind of dam bodies of tide prevention, including dam body and the slope set on dam body surface, multiple groups of linear distribution's buffer assembly are provided on the slope, the buffer assembly includes two fixedly connected with the support on slope, rotating plug-in shaft is arranged between two supports, multiple circumferential distribution's plate blade is fixedly connected on the shaft, when water flow impact is on plate blade, plate blade rotates with shaft, to achieve buffering purpose.In the utility model, when external force acts, plate blade can rotate with rotating shaft, impact force is dispersed by rotation angle, most of impact energy is absorbed by elastic buffer structure, avoid impact force directly transmitting to dam body main body, reduce the abrasion and crack of dam body sea-facing surface, convert tide impact from destructive external force into controllable mechanical movement.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy engineering technology, specifically relating to a tidal dam. Background Technology

[0002] Tides are a natural phenomenon caused by the periodic rise and fall of global sea levels due to the gravitational pull of the moon and sun, combined with the centrifugal force generated by the Earth's rotation. In simple terms, it is the regular rise and fall of the tide.

[0003] The movement of water during high and low tides (especially high-speed reciprocating flow) continuously impacts the seaward side, toe, and foundation of the dam, which is the main cause of surface damage. During high tide, the high-speed water flow (with a velocity of 1-3 m / s) carries mud, sand, gravel, and other debris, continuously impacting the seaward side of the dam (such as concrete facing and riprap slope), which will cause wear and tear on the concrete surface over time. During low tide, the water flows out from below the dam, carrying away the loose soil (such as sand and silt layers) at the base of the dam, forming "dam foundation scouring". Mild scouring will cause slight settlement of the dam, such as a drop of 1-3 cm in the dam crest elevation, and the appearance of cracks.

[0004] Chinese patent application number 202011328270.7 discloses an overflow dam, comprising dam shoulders laterally spaced opposite each other on both banks of a river, and a dam foundation and dam body located between the two dam shoulders. The dam body is rotatably supported on the two dam shoulders by struts laterally arranged along the river channel. The struts are located between the bottom and top of the dam body, and the dam foundation is located downstream of the dam body and positioned below the struts opposite to the bottom of the dam body. The dam body is designed as a lever structure with the struts as fulcrums, allowing it to automatically rotate when the water flow disrupts the dam body's torque balance, thus achieving automatic overflow at high water levels upstream of the dam body and keeping the upstream water level within an automatically controllable range. However, the technical solution disclosed in this patent document also fails to solve the aforementioned technical problem.

[0005] This invention provides a tidal dam body, with a particular focus on how to improve its protective effect. Utility Model Content

[0006] This utility model provides a tide-proof dam body, the purpose of which is to improve the protective effect.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tidal dam body, comprising a dam body and a slope provided on the surface of the dam body, wherein multiple buffer components are provided on the slope, each buffer component comprising two supports fixedly connected to the slope, a rotating shaft rotatably inserted between the two supports, multiple circumferentially distributed plate-shaped blades fixedly connected to the rotating shaft, a cover is provided on the support, and multiple elastic buffer structures are provided inside the cover, the elastic buffer structures being distributed circumferentially around the rotating shaft.

[0008] Preferably, the end of the support is fixedly connected to the cover, the inside of the cover is a cavity structure, the inner wall of the cavity structure is provided with circumferentially distributed grooves, the elastic buffer structure is provided inside the grooves, the end of the rotating shaft passes through the cavity structure, and the end of the rotating shaft is fixedly connected to a pushing block, which can compress the elastic buffer structure.

[0009] Preferably, the elastic buffer structure includes a spring fixedly connected to the inner wall of the slide groove and a compression block fixedly connected to the end of the spring. When the pushing block contacts the compression block, the compression block moves toward the inside of the slide groove, and the spring is compressed.

[0010] Preferably, the ends of the pushing block and the squeezing block that come into contact with each other are both arc-shaped structures.

[0011] Preferably, the dam body is a solid dam body constructed of concrete or masonry.

[0012] Preferably, the support is fixedly installed on the slope of the dam body by expansion bolts.

[0013] The anti-tidal dam of this utility model has the following beneficial effects: 1. In this utility model, when an external force is applied (such as tidal current impacting the dam body), the plate-shaped blades can rotate with the rotation axis, dispersing the impact force through the rotation angle. For example, the vertical impact is converted into a force along the rotation direction, and most of the impact energy is absorbed by the elastic buffer structure, avoiding the impact force being directly transmitted to the main body of the dam body, reducing wear and cracks on the seaward side of the dam body, and transforming the tidal impact from a destructive external force into a controllable mechanical motion. This not only significantly reduces the load on the dam body, but also flexibly adapts to tidal changes. It is especially suitable for estuaries and harbor areas with large tidal ranges and high sediment content in the water flow. It is a tidal protection solution that combines protection and economy.

[0014] 2. In this utility model, the dam body adopts a gravity dam design, and through the combination of embedded impermeable layer and anti-seepage core wall, the core is to enhance performance from two dimensions: anti-sliding stability and anti-seepage safety. It not only resists the horizontal thrust and seepage damage caused by tides, but also ensures the long-term durability of the dam body; the embedded impermeable layer enhances the anti-sliding ability of the dam foundation, and the self-weight of the gravity dam balances the thrust; the anti-seepage core wall blocks the internal seepage of the dam body, and the impermeable layer blocks the seepage of the dam foundation. The double anti-seepage prevents piping and landslides. Attached Figure Description

[0015] This manual includes the following figures, which illustrate the following: Figure 1 This is a front-view three-dimensional structural diagram of a tide-proof dam body proposed in this utility model; Figure 2 This is a rear-view three-dimensional structural diagram of a tide-proof dam body proposed in this utility model; Figure 3 This is a partial three-dimensional structural diagram of a tide-proof dam body proposed in this utility model; Figure 4 for Figure 3 Enlarged structural diagram at point A; The markings in the diagram are: 1. Dam body; 101. Slope; 2. Support; 3. Rotating shaft; 4. Plate-shaped blade; 5. Cover; 501. Slide groove; 6. Spring; 7. Compression block; 8. Pushing block. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of this utility model, and to facilitate its implementation.

[0017] like Figures 1 to 4 As shown, this utility model provides a tidal dam, including a dam body 1 and a slope 101 on the surface of the dam body 1. Multiple sets of linearly distributed buffer components are installed on the slope 101. Each buffer component includes two supports 2 fixedly connected to the slope 101, with a rotating shaft 3 rotatably inserted between the two supports 2. Multiple circumferentially distributed plate-shaped blades 4 are fixedly connected to the rotating shaft 3. When water flows and impacts the plate-shaped blades 4, the blades 4 rotate with the rotating shaft 3 to achieve the buffering purpose. Multiple plate-shaped blades 4 are provided, and all plate-shaped blades 4 are evenly distributed circumferentially with the axis of the rotating shaft 3 as the center line.

[0018] When external forces are applied, such as tidal water flow impacting the dam body 1, the water flow pushes the plate-shaped blades 4, which can rotate with the rotating shaft 3. The impact force is dispersed by the rotation angle, such as converting the vertical impact into a force along the rotation direction, and transforming the tidal impact from a destructive external force into a controllable mechanical motion. This not only significantly reduces the load on the dam body 1 and improves the protection effect, but also allows for flexible adaptation to tidal changes.

[0019] Reference Figure 3 and Figure 4 The support 2 is fixedly connected to a cover 5 at its end. The cover 5 has a hollow structure inside, and the inner wall of the hollow structure has circumferentially distributed grooves 501. An elastic buffer structure is set inside the grooves 501. The end of the rotating shaft 3 passes through the hollow structure and is fixedly connected to a pushing block 8. The pushing block 8 can compress the elastic buffer structure. Multiple elastic buffer structures are provided, and all elastic buffer structures are evenly distributed circumferentially with the axis of the rotating shaft 3 as the center line.

[0020] By absorbing most of the impact energy through an elastic buffer structure, the impact force is prevented from being directly transmitted to the main body of dam 1, reducing wear and cracks on the sea-facing side of dam 1. This is a tide protection solution that combines protection and economy.

[0021] Specifically, the elastic buffer structure includes a spring 6 fixedly connected to the inner wall of the slide 501 and a compression block 7 fixedly connected to the end of the spring 6. When the pushing block 8 contacts the compression block 7, the compression block 7 moves deeper into the slide 501, and the spring 6 is compressed.

[0022] When an external force is applied (such as tidal current impacting dam 1), the plate-shaped blades 4 rotate with the rotating shaft 3. The rotating shaft 3 drives the pushing block 8 to rotate synchronously. The pushing block 8 pushes and compresses the squeezing block 7, causing the squeezing block 7 to move deeper into the chute 501, thus compressing the spring 6. The spring 6 absorbs the impact energy through its own deformation. The elastic coefficient K of the spring 6 needs to be matched according to the tidal impact force. For example, K=2-5N / mm can absorb 80%-90% of the transmitted energy when compressed by 20-30mm. When the tide recedes, the impact force of the water flow disappears, the spring 6 rebounds, pushing the squeezing block 7 and the pushing block 8 back to their original positions, completing one energy conversion cycle without any energy residue or rebound.

[0023] Reference Figure 4 Both the pushing block 8 and the squeezing block 7 have an arc-shaped structure at their contact ends. When the pushing block 8 rotates and squeezes the squeezing block 7, the arc-shaped contact surface makes the contact-squeezing process gradual, and the force transmission is smoother.

[0024] Dam body 1 is a solid dam body made of concrete or masonry. Dam body 1 is embedded in the impermeable layer to a depth of ≥1 / 3 of the dam height, and is equipped with an anti-seepage core wall made of clay or asphalt.

[0025] Dam 1 adopts a gravity dam design and enhances its performance from two dimensions: anti-sliding stability and seepage prevention safety, through the combination of embedded impermeable layer and anti-seepage core wall. It resists the horizontal thrust and seepage damage caused by tides and ensures the long-term durability of dam 1. The embedded impermeable layer improves the anti-sliding capacity of the dam foundation and balances the thrust with the self-weight of the gravity dam. The anti-seepage core wall blocks the internal seepage of dam 1 and the impermeable layer blocks the seepage of the dam foundation. The double seepage prevention avoids piping and landslides.

[0026] Support 2 is fixedly installed on the slope 101 of dam body 1 by expansion bolts. The mechanical locking of expansion bolts achieves a stable connection between support 2 and dam body 1, while taking into account both ease of installation and resistance to pull-out and shear in tidal environments.

[0027] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A tidal dam, characterized in that: The dam includes a dam body (1) and a slope (101) on the surface of the dam body (1). Multiple buffer components are provided on the slope (101). Each buffer component includes two supports (2) fixedly connected to the slope (101). A rotating shaft (3) is rotatably inserted between the two supports (2). Multiple circumferentially distributed plate-shaped blades (4) are fixedly connected on the rotating shaft (3). A cover (5) is provided on the support (2). Multiple elastic buffer structures are provided inside the cover (5). The elastic buffer structures are distributed circumferentially around the rotating shaft (3).

2. The anti-tidal dam body according to claim 1, characterized in that: The end of the support (2) is fixedly connected to the cover (5). The cover (5) has a hollow structure inside. The inner wall of the hollow structure is provided with a circumferentially distributed groove (501). The elastic buffer structure is provided inside the groove (501). The end of the rotating shaft (3) extends into the hollow structure. The end of the rotating shaft (3) is fixedly connected to a push block (8). The push block (8) can squeeze the elastic buffer structure.

3. The anti-tidal dam body according to claim 2, characterized in that: The elastic buffer structure includes a spring (6) fixedly connected to the inner wall of the slide (501) and a compression block (7) fixedly connected to the end of the spring (6). When the pushing block (8) contacts the compression block (7), the compression block (7) moves toward the inside of the slide (501) and the spring (6) is compressed.

4. The anti-tidal dam body according to claim 3, characterized in that: The ends of the push block (8) and the squeeze block (7) that come into contact with each other are both arc-shaped structures.

5. A tidal dam body according to any one of claims 1 to 4, characterized in that: The dam body (1) is a solid dam body constructed of concrete or masonry.

6. A tidal dam body according to any one of claims 1 to 4, characterized in that: The support (2) is fixedly installed on the slope (101) of the dam body (1) by expansion bolts.

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