Fabricated water wave imitating permeable dam structure

Abstract

The utility model discloses an assembly type water wave imitating permeable dam structure which comprises a dam head component, a dam body component and a dam root back plate component, the dam body component comprises a plurality of unit components which are connected end to end in the longitudinal direction, the head end of the dam body component is connected with the dam head component, and the tail end of the dam body component is connected with a dam root back plate in a closed mode; each unit component comprises an upstream face, a downstream face, a dam top portion and a dam bottom portion which are connected in a surrounding mode, the interiors of the unit components penetrate in the longitudinal direction to form a water wave simulating permeable cavity, the transverse middle of each dam bottom portion protrudes upwards to form an arch support, and the two transverse sides of each dam bottom portion extend outwards to form dam toes; the dam head component and the dam body component are each provided with a water permeable mechanism. By adopting the water-wave-imitating structural form, the water pressure generated by water flow on the dam body can be effectively reduced, and the stability of the dam body can be improved; the fabricated structure is adopted, so that the site construction operation time can be shortened, the contradiction between construction and navigation is relieved, the project quality can be improved, and fine management and green construction are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waterway regulation engineering, in particular to an assembled water wave-imitation water-permeable dam structure. Background Art

[0002] In waterway management, dam projects are often used to adjust flow velocity and direction, narrow water flow, raise water levels, and adjust water surface gradients to slow down the scouring of embankments and key shoals, thereby protecting important embankments and shoals, forming stable waterway boundaries, and increasing water depths. Dams are divided into permeable dams and impermeable dams. Impermeable dams change the direction of water flow and have a diversion effect, while permeable dams allow water to pass through the dam body, reducing flow velocity, forming a slow flow, and achieving the purpose of promoting siltation. Traditional permeable dam structures mostly use prefabricated components with clear boundaries. Although they achieve the expected functions of permeable dams, they are prone to cause flow disorder around the dam body, severe scouring at the dam root, dam root, and downstream of the dam, and in severe cases, water damage may occur, causing damage to waterways, slopes, and aquatic habitats.

[0003] Therefore, it is necessary to develop an assembled water wave-mimicking permeable dam structure that can reduce the water resistance and the impact on the flow state of the water flow, and create a rich habitat for aquatic organisms. Summary of the invention

[0004] The purpose of the utility model is to solve the deficiencies of the above-mentioned background technology and to provide an assembled wave-like permeable dam structure which can reduce the water resistance, mitigate the impact on the flow state of the water, and create a rich habitat for aquatic organisms. It also has the advantages of effectively reducing the water pressure generated by the water flow on the dam body, improving the stability of the dam body, shortening the on-site construction operation time, alleviating the contradiction between construction and navigation, improving the quality of the project, and realizing refined management and green construction.

[0005] The technical solution of the utility model is: an assembled water wave-imitation permeable dam structure, characterized in that it includes a dam body component, a dam head component, and a dam root backboard component. The dam body component includes a plurality of unit components connected head to tail along the longitudinal direction, the head end of the dam body component is connected to the dam head component, and the tail end is closed and connected to the dam root backboard component.

[0006] Each of the unit components includes a water-facing surface, a water-receiving surface, a dam top and a dam bottom. The water-facing surface and the water-receiving surface are arranged opposite to each other in the transverse direction and gradually tilt upward and approach each other. The dam bottom bulges upward in the middle of the transverse direction to form an arch support. The water-facing surface, the water-receiving surface, the dam top and the dam bottom are enclosed and connected internally to form a water wave-simulating hollow cavity that penetrates longitudinally. Both transverse sides of the dam bottom extend outward to form a dam toe.

[0007] The bottom of the dam head component is open, and water permeable mechanisms are provided on the dam head component and the dam body component.

[0008] Preferably, the water-permeable mechanism on the unit components includes a first water-permeable hole arranged on the water-facing surface of each unit component, a second water-permeable hole on the water-receiving surface, a third water-permeable hole on the top of the dam, and a fourth water-permeable hole on the bottom of the dam. The first water-permeable hole and the second water-permeable hole are both longitudinally long strips, and the third water-permeable hole and the fourth water-permeable hole are both circular and vertically corresponding.

[0009] Furthermore, the top edge of the first water-permeable hole and the bottom edge of the second water-permeable hole are both flush with the top of the arch support.

[0010] Furthermore, the top of the dam is in an upward arch shape in the transverse direction, the third water-permeable hole is arranged in the transverse middle part of the top of the dam, and the aperture of the third water-permeable hole is smaller than the aperture of the fourth water-permeable hole.

[0011] Preferably, the dam head component includes a semi-arched dam head body, the tail end edge of the dam head body is correspondingly connected to the water-facing surface, the water-receiving surface and the dam top of the headmost unit component of the dam body component, and the dam head body shrinks and extends toward the head end in the longitudinal direction and is connected to a spherical arc-shaped end cover.

[0012] Furthermore, the water-permeable mechanism on the dam head component includes a fifth water-permeable hole arranged on the end cover and a sixth water-permeable hole on the dam head body. The fifth water-permeable hole and the sixth water-permeable hole are both circular holes, and the sixth water-permeable hole is longitudinally spaced at the top and both sides of the dam head body.

[0013] Furthermore, the number of the fifth water-permeable holes is , which are arranged in the horizontal middle of the end cover, and the aperture of the fifth water-permeable hole is larger than the aperture of the sixth water-permeable hole.

[0014] Preferably, the bottom of the water-facing surface and the water-retaining surface are connected to the dam toe on the same side by an arc transition, and the ratio of the vertical thickness of each dam toe to its transverse width is 0.3-0.4:1.

[0015] Preferably, the arch support is formed by an elliptical arc that is arranged with its major axis in the transverse direction and bulges upward, and the ratio of the minor axis to the major axis of the elliptical arc is 0.5-0.6:1.

[0016] Preferably, the water-facing surface and the water-receiving surface are laterally symmetrically inclined with a slope ratio of 1.5 to 2.5:1.

[0017] Preferably, the overall longitudinal length of the dam head component is about 3.5 to 4 times the dam height, and the dam head gradient is about 5%.

[0018] The beneficial effects of the utility model are:

[0019] 1. The cross-section of the water-wave-like permeable dam body components shrinks upward, which can enhance the stability and compression resistance of the dam body. The upward-raised dam top and the smoothly connected dam toe can better guide the water flow, and the dam toes on both sides can improve the anti-tilt and anti-sliding stability of the dam body;

[0020] 2. By setting the first water-permeable hole on the water-facing surface and the second water-permeable hole on the water-receiving surface as well as the arch support, the flow velocity of water entering the dam body can be slowed down, the sedimentation and the horizontal exchange of aquatic organisms can be promoted, the habitat of aquatic organisms can be created, and the turbulence of the downstream overturning of the dam body can be slowed down;

[0021] 3. The third water-permeable hole at the top of the dam and the fourth water-permeable hole at the bottom of the dam can connect the water flow inside and outside the dam body, promoting the vertical exchange of aquatic organisms. The fourth water-permeable hole at the bottom of the dam can also eliminate the buoyancy when the dam body is suspended, thereby improving the efficiency of dam construction;

[0022] 4. The hollow cavity that imitates water waves can make the inside of the dam body hollow, greatly saving the material of the dam body, reducing the weight of the dam body and the stress of the foundation, and reducing settlement; the imitation of water waves can smooth the water flow inside the dam body and promote the siltation of the silt inside the dam body;

[0023] 5. The semi-arched dam head component can smooth the water flow at the dam head. The water-permeable holes in different directions can guide the water flow into (leave) the interior of the dam head, balance the water pressure inside and outside the dam head, slow down the turbulence and water flow velocity, prevent local scouring caused by bypass flow and eddy current, and enhance the stability of the dam head.

[0024] 6. The water wave-mimicking permeable dam can control the permeability of the dam body by the size of the permeable holes, so as to control the flow velocity and cross-sectional flow in the project area, control the water level upstream of the dam body and adjust the water surface gradient.

[0025] 7. Each unit component of the dam head, dam root back plate and dam body can be prefabricated off-site. The use of prefabricated structure can not only shorten the on-site construction time and alleviate the contradiction between construction and navigation, but also improve the project quality and realize refined management and green construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional schematic diagram of the utility model

[0027] Figure 2 This is a three-dimensional schematic diagram of the utility model in which one unit component is omitted

[0028] Figure 3 A three-dimensional schematic diagram of a unit component

[0029] Figure 4 Schematic diagram of the cross section of the unit component

[0030] Figure 5 Schematic diagram of the longitudinal section of the unit component

[0031] Figure 6 Top view of unit component

[0032] Figure 7 Schematic diagram of the cross section of the dam head component

[0033] Figure 8 Schematic diagram of the longitudinal section of the dam head component

[0034] Fig. 9 Top view of the dam head component

[0035] Among them: 1-dam body component 2-unit component 3-dam head component 4-water wave imitating hollow cavity 5-water-facing surface 6-water-repelling surface 7-dam top 8-dam bottom 9-water-permeable mechanism (91-first water-permeable hole 92-second water-permeable hole 93-third water-permeable hole 94-fourth water-permeable hole 95-fifth water-permeable hole 96-sixth water-permeable hole) 10-arch support 11-dam toe 12-dam root back plate component 13-end cover 14-dam head body. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] like Figures 1 to 9 As shown, the utility model provides an assembled water wave-imitation permeable dam structure, including a dam body component 1, a dam head component 3, and a dam root back plate component 12. The dam body component 1 includes a plurality of unit components 2 connected head to tail along the longitudinal direction. The head end of the dam body component 1 is connected to the dam head component 3, and the tail end is closed and connected to the dam root back plate component 12. In this embodiment, the longitudinal direction refers to the dam length direction. Figure 5-6 , 8-9 left and right; transverse refers to the dam width direction, Figure 4 , 7 Left and right direction.

[0040] like Figures 4 to 6 As shown, each unit component 2 includes a water-facing surface 5, a water-receiving surface 6, a dam top 7 and a dam bottom 8. The water-facing surface 5 and the water-receiving surface 6 are arranged opposite to each other in the transverse direction and are symmetrically inclined and gradually approach each other upward. The dam top 7 is in the transverse direction of an upward arch arc, and the dam bottom 8 bulges upward in the transverse middle to form an arch support 10. The water-facing surface 5, the water-receiving surface 6, the dam top 7 and the dam bottom 8 are enclosed and connected to form an imitation water wave hollow cavity 4 that penetrates the unit component 2 in the longitudinal direction. Both sides of the dam bottom 8 extend outward in the transverse direction to form a dam toe 11. The water-facing surface 5, the bottom of the water-receiving surface 6 and the dam toe 11 on the same side are all smoothly transitionally connected.

[0041] In this embodiment, the symmetrical inclination and approach of the water-facing surface 5 and the water-retaining surface 6 make the cross section of the unit component 2 approximately isosceles trapezoidal, which enhances the stability and compression resistance of the dam body. The upwardly raised dam top 7 and the smoothly connected dam toe 11 can better guide the water flow, and the dam toes 11 on both sides can improve the anti-tilting and anti-slip stability of the dam body. The cross section of the water-wave-simulating hollow cavity 4 is approximately isosceles trapezoidal, and the dam bottom 8 is connected to the inner wall curve of the water-facing surface 5 and the water-retaining surface 6 in the water-wave-simulating hollow cavity 4. The water-wave-simulating hollow cavity 4 can make the interior of the dam body completely hollow, greatly saving the material of the dam body, reducing the weight of the dam body and the foundation stress, and reducing settlement. The upwardly raised water-simulating wave shape can smooth the water flow inside the dam body and promote the sedimentation inside the dam body.

[0042] In this embodiment, there are 7 unit components 2, which are connected head to tail in the longitudinal direction to form the dam body component 1, and the water wave-like hollow cavities 4 of all unit components 2 are connected longitudinally to form a whole. Figure 4 The ratio of the distance between the front and rear surfaces 5 and 6 in the middle and left directions exceeding the front and rear surfaces 6 on the same side is 0.3-0.4:1. The thickness of the back plate component 12 at the dam root is consistent with the thickness of the dam toe 11. The arch support 10 is formed by an elliptical arc with a long axis arranged in the transverse direction and bulging upward, and the ratio of the short axis to the long axis of the elliptical arc is 0.5-0.6:1. The front and rear surfaces 5 and 6 are symmetrically inclined at a slope ratio of 1.5-2.5:1.

[0043] In this embodiment, each unit component 2 of the dam body component 1 is provided with a water-permeable mechanism 9, and the water-permeable mechanism 9 of each unit component 2 includes a first water-permeable hole 91 arranged on the water-facing surface 5, a second water-permeable hole 92 on the water-receiving surface 6, a third water-permeable hole 93 on the dam top 7, and a fourth water-permeable hole 94 on the dam bottom 8. The first water-permeable hole 91 and the second water-permeable hole 92 are both longitudinally long strips, and the top edge of the first water-permeable hole 91 and the bottom edge of the second water-permeable hole 92 are both flush with the top of the arch support 10. The third water-permeable hole 93 and the fourth water-permeable hole 94 are both circular and vertically corresponding, and the third water-permeable hole 93 is arranged in the middle of the dam top 7 in the horizontal direction, and the aperture of the third water-permeable hole 93 is smaller than that of the fourth water-permeable hole 94.

[0044] The first water-permeable hole 91 can smoothly guide the water flow borne by the water-facing surface 5 into the water-wave-simulating hollow cavity 4, and the arch support 10 can change the direction of the water flow, slow down the water flow velocity, and guide the water flow to flow out from the second water-permeable hole 92 on the back surface 6, so that the water flow through the dam body component 1 is smoother, reducing the pressure of the front water flow on the dam body, promoting the lateral exchange of aquatic organisms, and slowing down the turbulence of the dam body downstream. The arch support 10 can slow down the flow velocity of the water entering the dam body, promote siltation, and create a habitat for aquatic organisms. The third water-permeable hole 93 on the top of the dam and the fourth water-permeable hole 94 at the bottom of the dam can connect the water flow inside and outside the dam body, promote the vertical exchange of aquatic organisms, and can also eliminate the buoyancy when the dam body is suspended, thereby improving the efficiency of dam body construction.

[0045] The dam head component 3 is an open bottom structure, including an arched dam head body 14, the tail end edge of which is correspondingly connected to the water-facing surface 5, the water-receiving surface 6, and the dam top 7 of the headmost unit component 2 of the dam body component 1, and the dam head body 14 shrinks and extends toward the head end in the longitudinal direction, and the head end is connected to a spherical arc end cap 13. The internal space of the dam head component 3 is connected to the water wave-imitation hollow cavity 4 of the dam body component 1.

[0046] The water-permeable mechanism 9 on the dam head component 3 includes a fifth water-permeable hole 95 arranged on the end cover 13 and a sixth water-permeable hole 96 of the dam head body 14. The fifth water-permeable hole 95 and the sixth water-permeable hole 96 are both circular holes, and the sixth water-permeable hole 96 is longitudinally spaced at the top and both sides of the dam head body 14.

[0047] In this embodiment, the number of the fifth water-permeable hole 95 is one, which is arranged in the middle of the end cover 13 in the horizontal direction, and the aperture of the fifth water-permeable hole 95 is larger than the apertures of all the sixth water-permeable holes 96. There are three sixth water-permeable holes 96 at the top of the dam head body 14 and four at each side. The longitudinal overall length of the dam head component 3 is about 3.5 to 4 times the dam height (the height of the connection with the dam body component 1), and the outer diameter of the dam head component 3 shrinks toward the head end so that the dam head gradient is about 5%.

[0048] In this embodiment, the dam head component 3 can smooth the water flow at the dam head. The fifth water permeable hole 95 and the sixth water permeable hole 96 are arranged in different directions, which can guide the water flow into (leave) the interior of the dam head component 3, balance the water pressure inside and outside the dam head component 3, slow down turbulence and water flow velocity, prevent local scouring caused by circumference and eddy currents, and enhance the stability of the dam head component 3.

[0049] The working principle of this embodiment is:

[0050] When water flows through the assembled water wave-imitation permeable dam structure of this embodiment from the water-facing side, the first permeable hole 91 can smoothly introduce the water flow into the water wave-imitation permeable cavity 4, and flow out from the second permeable hole 92 on the back water surface 6. The third permeable hole 93 and the fourth permeable hole 94 can connect the water flow inside and outside the dam body; the sixth permeable hole 96 on the water-facing side of the dam head component 3 can smoothly introduce the water flow into the dam head component 3, slow down the water flow rate, and flow out from the sixth permeable hole 96 on the back water side of the dam head component 3. The permeability involved in this embodiment can be controlled by the size of the permeable hole, so as to achieve the purpose of controlling the flow rate and cross-sectional flow in the engineering area, controlling the water level of the upstream of the dam body, and adjusting the water surface gradient.

Claims

1. An assembled water wave-imitation permeable dam structure, characterized in that: The dam body component (1) comprises a dam head component (3) and a dam root back plate component (12), wherein the dam body component (1) comprises a plurality of unit components (2) connected head to tail in the longitudinal direction, the head end of the dam body component (1) is connected to the dam head component (3), and the tail end is closedly connected to the dam root back plate component (12); Each of the unit components (2) comprises a water-facing surface (5), a water-receiving surface (6), a dam top (7) and a dam bottom (8); the water-facing surface (5) and the water-receiving surface (6) are arranged opposite to each other in the transverse direction and gradually tilt upward and approach each other; the dam bottom (8) bulges upward in the transverse middle to form an arch support (10); the water-facing surface (5), the water-receiving surface (6), the dam top (7) and the dam bottom (8) are connected and enclosed to form a water wave-simulating hollow cavity (4) penetrating in the longitudinal direction; and both transverse sides of the dam bottom (8) extend outward to form a dam toe (11); The bottom of the dam head component (3) is open, and water permeability mechanisms (9) are provided on the dam head component (3) and the dam body component (1).

2. The assembled water wave-imitation permeable dam structure according to claim 1, characterized in that: The water-permeable mechanism (9) on the dam body component (1) comprises a first water-permeable hole (91) arranged on the water-facing surface (5) of each unit component (2), a second water-permeable hole (92) on the water-receiving surface (6), a third water-permeable hole (93) on the dam top (7) and a fourth water-permeable hole (94) on the dam bottom (8), wherein the first water-permeable hole (91) and the second water-permeable hole (92) are both longitudinally long strips, and the third water-permeable hole (93) and the fourth water-permeable hole (94) are both circular and vertically corresponding.

3. The assembled water wave-imitation permeable dam structure according to claim 2 is characterized in that: The top edge of the first water-permeable hole (91) and the bottom edge of the second water-permeable hole (92) are both flush with the top of the arch support (10).

4. The assembled water wave-imitation permeable dam structure according to claim 2, characterized in that: The dam top (7) is in an upward arch shape in the transverse direction, the third water permeable hole (93) is arranged in the transverse middle part of the dam top (7), and the aperture of the third water permeable hole (93) is smaller than the aperture of the fourth water permeable hole (94).

5. The assembled water wave-imitation permeable dam structure according to claim 1, characterized in that: The dam head component (3) comprises an arched dam head body (14), the rear end edge of which is correspondingly connected to the water-facing surface (5), the water-receiving surface (6) and the dam top (7) of the headmost unit component (2) of the dam body component (1), and the dam head body (14) shrinks and extends toward the head end in the longitudinal direction and is connected to a spherical arc-shaped end cover (13).

6. The assembled water wave-imitation permeable dam structure according to claim 5, characterized in that: The water permeable mechanism (9) on the dam head component (3) comprises a fifth water permeable hole (95) arranged on the end cover (13) and a sixth water permeable hole (96) of the dam head body (14); the fifth water permeable hole (95) and the sixth water permeable hole (96) are both circular holes; and the sixth water permeable hole (96) is longitudinally spaced apart at the top and both sides of the dam head body (14).

7. The assembled water wave-imitation permeable dam structure according to claim 6, characterized in that: The number of the fifth water-permeable hole (95) is one, and the hole is arranged in the middle of the end cover (13) in the horizontal direction. The hole diameter of the fifth water-permeable hole (95) is larger than the hole diameter of the sixth water-permeable hole (96).

8. The assembled water wave-imitation permeable dam structure according to claim 1, characterized in that: The bottoms of the water-facing surface (5) and the water-receiving surface (6) are smoothly transitionally connected to the dam toes (11) on the same side, and the ratio of the vertical thickness of each dam toe (11) to its horizontal width is 0.3-0.4:

1.

9. The assembled water wave-imitation permeable dam structure according to claim 1, characterized in that: The arch support (10) is formed by an elliptical arc with a major axis arranged in the transverse direction and bulging upward, and the ratio of the minor axis to the major axis of the elliptical arc is 0.5-0.6:

1.

10. The assembled water wave-imitation permeable dam structure according to claim 1, characterized in that: The water-facing surface (5) and the water-receiving surface (6) are arranged to be inclined symmetrically in the transverse direction, and the slope ratio is 1.5 to 2.5:1.

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