An assembled water-permeable dam for a landscape water body

Abstract

This utility model discloses a prefabricated permeable dam for landscape water bodies, belonging to the field of landscape water body ecological protection technology. It includes a permeable dam base and several filter dams; the filter dams are arranged perpendicular to the extension direction of the permeable dam base; the filter dams are spaced apart along the extension direction of the permeable dam base to separate the base and form multiple sedimentation zones. This utility model utilizes step-by-step filtration to ensure filtration effectiveness, allows for individual disassembly, cleaning, and reuse of filter units within the filter dams, thereby increasing the service life of the facility and reducing maintenance costs.

Description

Technical Field

[0001] This utility model belongs to the field of landscape water ecological protection technology, specifically relating to a prefabricated permeable dam for landscape water bodies. Background Technology

[0002] Urban landscape water bodies are an important component of the urban ecological and cultural environment, encompassing various forms such as artificial lakes, landscape rivers, and water feature ponds. Unlike large rivers and lakes far from populated areas, urban landscape water bodies are mainly shallow water bodies with irregular surface geometry, and generally rely on river water for replenishment. These water bodies typically suffer from insufficient water dynamics, slow flow velocity, weak self-purification capacity, and low environmental capacity. They are highly susceptible to accumulating silt and sediment carrying various pollutants during river water replenishment, and are difficult to self-repair.

[0003] Sediment, as a primary source of pollution, not only contains clay and debris but also adsorbs algae, bacteria, high-molecular-weight organic matter, and pollutants exceeding standards. These pollutants, after entering the lake area with replenished water, quickly adhere to the surface of valuable ornamental aquatic plants, clogging their roots, inhibiting photosynthesis, and even directly causing their death, severely damaging the ecological and aesthetic value of the landscape water body. To manage pollutants in such small rivers and water bodies, permeable dams are often constructed. Permeable dams are classified into ecological permeable dams, rockfill permeable dams, and segmented permeable dams, depending on their substrate and structural form. Due to their different construction methods, their advantages and disadvantages also vary.

[0004] For example, to avoid the damage to the river environment caused by the long construction period required for reinforced concrete support structures, a hybrid earth-rock ecological filter dam has been proposed. This involves directly adding gabion columns as supports to the existing river channel, then stacking different types of crushed stone such as limestone, volcanic rock, and clinoptilolite to form a filter layer for sediment filtration. Another example is a biological purification dam designed to remove pollutants such as ammonia nitrogen and phosphorus. This dam utilizes aggregates with biofilms filled within the gabions to purify and decontaminate the river water as it flows over the dam. However, these permeable dams, despite their different forms and directions of improvement, all share a common problem: their filter structures all employ multi-layered material stacking to form a relatively wide water-retaining structure. After long-term use, this type of water-retaining structure gradually becomes clogged by silt and pollutants, clogging the gaps between the filter media and the gabions. This leads to a gradual loss of the dam's permeability and filtration functions, resulting in a short lifespan. Furthermore, with the continuous accumulation of silt, the multi-layered filter structure becomes even more tightly bound, making disassembly and cleaning extremely difficult. This makes cleaning after clogging extremely challenging, and maintenance is almost equivalent to demolition and reconstruction, failing to meet the economic and convenience requirements for long-term management of landscape water bodies. Therefore, there is an urgent need for a prefabricated permeable dam that can solve the above problems for landscape water bodies. Utility Model Content

[0005] The object of the utility model is to provide an assembled permeable dam for landscape water bodies in view of the above deficiencies, aiming to solve the problems that the existing permeable dams are prone to blockage during long-term use, resulting in the gradual failure of the filtering function, and it is difficult to disassemble and clean after blockage, leading to the inability to be reused. To achieve the above object, the utility model provides the following technical solutions: An assembled permeable dam for landscape water bodies includes a permeable dam matrix and a plurality of filtering dam bodies; the arrangement direction of the filtering dam bodies is perpendicular to the extension direction of the permeable dam matrix; the plurality of filtering dam bodies are arranged at intervals along the extension direction of the permeable dam matrix to separate the permeable dam matrix and form a plurality of sedimentation areas.

[0006] Further, the filtering dam body includes a dam body main body and two side piers; the dam body main body includes a plurality of filtering body rows stacked in sequence from bottom to top; the filtering body row includes a plurality of filtering monomers arranged in sequence from left to right in the horizontal direction; the two side piers are symmetrically supported on the left and right sides of the permeable dam matrix, and the dam body main body is clamped between the two side piers.

[0007] Further, the filtering monomer includes a support outer shell and a wire cage; the outer contour of the support outer shell is rectangular; the wire cage is detachably fitted inside the support outer shell; the wire cage is filled with filter materials for filtering water bodies.

[0008] Further, the support outer shell includes a U-shaped plate and two support frames; the two support frames are respectively arranged on the front and rear sides of the U-shaped plate and can enable water bodies to pass through along the front and rear directions of the U-shaped plate.

[0009] Further, the shape of the support frame is "day" shaped.

[0010] Further, a plurality of lifting lugs are further provided on the inner wall of the top of the U-shaped plate.

[0011] Further, a partition is further provided inside the wire cage to divide the whole wire cage into upper and lower layers.

[0012] Further, the permeable dam matrix includes a horizontal base platform and two side walls; the horizontal base platform is clamped between the two side walls and is located below the filtering dam body; the side walls correspond to the side piers one by one, and one side of each side pier far from the dam body main body is connected to the corresponding side wall.

[0013] Further, a first structural joint is provided on the permeable dam matrix; the first structural joint is arranged in the front and rear direction and penetrates through the horizontal base platform to divide the horizontal base platform into two symmetric base platform half areas in the left and right direction.

[0014] Furthermore, a second structural joint is provided on the permeable dam base; the second structural joint is set along the left and right direction and penetrates the horizontal base and the two side walls, so as to divide the two base half-areas into four centrally symmetrical base sub-areas along the front and back direction, and divide the side walls into two side wall half-areas symmetrical along the front and back direction.

[0015] The beneficial effects of this utility model are: 1. This utility model uses multiple filter dams to intercept and filter silt and other pollutants in the water body step by step, and disperses and deposits them in each sedimentation zone to reduce the load on the permeable dam, avoid the rapid and excessive accumulation of silt in a single area leading to blockage, facilitate maintenance personnel to clean the silt in the sedimentation zone regularly, and extend the service life of the permeable dam.

[0016] 2. This utility model assembles several filter units to form the main body of the dam, which can be adapted to permeable dams of different sizes. Each filter unit can be disassembled, cleaned and reused individually, effectively solving the problem that existing permeable dams are difficult to disassemble and reuse after being blocked, thus reducing the use and maintenance costs of permeable dams. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ; Figure 3 This is a three-dimensional structural schematic diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of multiple stacked filter units in this utility model, wherein the filter media is not shown; Figure 5 This is a three-dimensional structural diagram of the filter unit in this utility model, wherein the filter media is not shown; In the attached diagram: 1. Permeable dam base; 2. Filter dam body; 3. Sedimentation zone; 4. Filter unit; 5. First structural joint; 6. Second structural joint; 11. Horizontal platform; 12. Side wall; 21. Main body of dam; 22. Side pier; 41. Support shell; 42. Wire cage; 411. U-shaped plate; 412. Support frame; 413. Lifting lug; 421. Partition. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0020] In the description of this utility model, "multiple" means two or more.

[0021] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0022] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0023] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0025] Example 1: See attached Figures 1-2A prefabricated permeable dam for a landscape water feature includes a permeable dam base 1 and several filter dam bodies 2. The filter dam bodies 2 are arranged perpendicular to the extension direction of the permeable dam base 1. The filter dam bodies 2 are spaced apart along the extension direction of the permeable dam base 1 to separate the permeable dam base 1 and form multiple sedimentation zones 3. As can be seen from the above structure, the permeable dam base 1, as the foundation of the entire prefabricated permeable dam, can be set as the water inlet of the landscape water feature. Specifically, it can be constructed by concrete pouring to provide a stable installation foundation for the filter dam bodies 2 and to provide support for them. Figure 2 It can be seen that the river water flows from left to right, and after being filtered by the permeable dam, it flows into the rightmost landscape water area. The height of the filter dam 2 is set according to the actual interception requirements, so that the water level in the river is lower than the height of the leftmost filter dam 2. Several filter dams 2 are arranged at intervals along the extension direction of the permeable dam base 1, and their arrangement is perpendicular to the extension direction of the permeable dam base 1. The multiple filter dams 2, together with the permeable dam base 1, separate multiple sedimentation zones 3 in the entire permeable dam.

[0026] Specifically, such as Figure 2 As shown, there are four filter dams 2. When the river water flows to the right and passes through the permeable dam, the river water first undergoes primary filtration through the leftmost filter dam 2, where some sediment is intercepted to the left of the filter dam 2. Then, the water enters the first sedimentation zone 3, where the water flow slows down and some sediment settles. After primary filtration, the water continues to the right, undergoes secondary filtration through the second filter dam 2, and enters the second sedimentation zone 3 where the flow slows down again and sediment settles. Then, the water continues to the right, undergoes secondary filtration through the third filter dam 2, and enters the third sedimentation zone 3 where the flow slows down again and sediment settles. Finally, the river water flows to the right through the fourth filter dam 2 and eventually flows into the landscape water area on the right. During this process, each filter dam 2 intercepts and filters sediment and pollutants in the water in stages, causing the sediment to be dispersed and deposited between each sedimentation zone 3. This reduces the load on the permeable dam and prevents rapid and excessive accumulation of sediment in a single area, facilitating regular cleaning of sediment in each sedimentation zone 3 by maintenance personnel. The width of the sedimentation zone 3 can be flexibly set to accommodate the needs of small machinery for cleaning. Compared to existing centralized sedimentation filter structures, the spaced-out filter dams 2 also reduce the likelihood of clogging by sediment during long-term use, making individual cleaning easier. Furthermore, because multiple filter dams 2 are installed, while maintenance personnel are cleaning one or more, the remaining filter dams 2 can still perform their filtering and interception functions. Maintenance personnel can disassemble and clean each filter dam 2 at different times according to its actual usage, ensuring the normal operation of the permeable dam.

[0027] Example 2: See attached Figures 1-5 Based on Embodiment 1, the filter dam 2 includes a dam body 21 and two side piers 22. The dam body 21 includes multiple rows of filter bodies stacked sequentially from bottom to top. Each row of filter bodies includes several individual filter units 4 arranged sequentially from left to right along the horizontal direction. The two side piers 22 symmetrically support the left and right sides of the permeable dam base 1, and sandwich the dam body 21 between the two side piers 22. As can be seen from the above structure, the dam body 21 is composed of several rows of filter bodies stacked together, and each row of filter bodies includes several individual filter units 4. Specifically, the arrangement can be arranged sequentially from left to right along the horizontal direction to form the bottom row of filter bodies, and then the second, third, ... Nth row of filter bodies can be stacked upwards. The number of filter bodies can be set according to the actual water height to be intercepted. The prefabricated dam body 21 is suitable for permeable dams of different sizes, and each individual filter unit 4 can be disassembled and cleaned individually and reused, reducing the use and maintenance costs of the permeable dam. Since the cross-section of the permeable dam base 1 is often similar to an inverted trapezoid that is wider at the top and narrower at the bottom, two side piers 22 are set on the left and right sides of the permeable dam base 1 to adapt to the shape of the permeable dam base 1 and to intercept sediment from the left and right sides of the dam body 21, preventing sediment from flowing directly into the sedimentation zone 3 located behind the dam body 21 without filtration, thus ensuring the filtration effect.

[0028] The filter unit 4 includes a supporting shell 41 and a mesh cage 42; the outer contour of the supporting shell 41 is rectangular; the mesh cage 42 is detachably fitted inside the supporting shell 41; the mesh cage 42 is filled with filter media for filtering water. From the above structure, it can be seen that... Figure 5 (a) is a structural schematic diagram of the supporting shell 41. The supporting shell 41 can be made of metal material, which can provide stable external support for the soft and easily deformable mesh cage 42, ensure the overall structural strength of the filter unit 4, and prevent the mesh cage 42 from being severely deformed due to the weight of the filter media or the impact of water flow. The outer contour of the supporting shell 41 is set as rectangular, which makes it easy to stack multiple filter units 4 to form a regular dam body 21, and also makes it easy to clean the filter units 4 individually by moving the supporting shell 41. Figure 5 (b) is a schematic diagram of the structure of the mesh cage 42. The mesh cage 42 is detachably fitted inside the support shell 41, and the mesh cage 42 is filled with filter media. In addition, if a filter unit 4 has completely lost its filtering capacity, the staff can complete the update and maintenance by separating the support shell 41 and the mesh cage 42, removing the old mesh cage 42, and then installing a new mesh cage 42 filled with filter media.

[0029] The support housing 41 includes a U-shaped plate 411 and two support frames 412; the two support frames 412 are respectively arranged on the front and rear sides of the U-shaped plate 411, and can allow water to pass through along the front and rear directions of the U-shaped plate 411. From the above structure, it can be seen that the U-shaped plate 411 of the support housing 41 has an upward opening, specifically including a bottom plate and side plates connected to its left and right sides, which can place the cage 42 therein and provide limits on the left and right sides. The two support frames 412 are respectively arranged on the front and rear sides of the U-shaped plate 411, and the front and rear sides of the U-shaped plate 411 are penetrated. Among them, the inside of the support frame 412 is hollow, and water can flow in through one support frame 412 along the front and rear directions, pass through the filter material in the cage 42, and then flow out backward through the other support frame 412, ensuring the smooth flow path of water and enabling the full contact between the filter material and water.

[0030] The shape of the support frame 412 is a "day" character shape. From the above structure, it can be seen that the "day" character-shaped support frame 412 is based on the "mouth" character structure and has an additional horizontal reinforcing rib. On the one hand, this setting can enhance the structural strength of the entire support frame 412, and on the other hand, it can also provide further limits on the front and rear sides of the cage 42. In addition, the shape of the support frame 412 can also be changed according to requirements, such as setting two obliquely crossed reinforcing ribs on the basis of the "mouth" character structure.

[0031] A number of lifting lugs 413 are also provided on the inner wall of the top of the U-shaped plate 411. From the above structure, it can be seen that by setting the lifting lugs 413 on the U-shaped plate 411, a crane can hook the lifting lugs 413 to lift the filtration unit 4, which is convenient for the installation, disassembly of the filtration unit 4, and also convenient for cleaning and maintenance.

[0032] A partition 421 that divides the entire cage 42 into upper and lower layers is also provided inside the cage 42. From the above structure, it can be seen that the partition 421 can divide the entire cage 42 into upper and lower layers, and the same or different filter materials can be filled in the upper and lower layers of the cage 42 to meet the water purification requirements. In addition, according to the water purification requirements, the filter material can be selected from common pebbles, gravels, or ecological filter materials that can purify ammonia nitrogen and phosphorus substances. This is prior art and will not be elaborated here.

[0033] Embodiment Three: See Appendix Figures 1-5Based on Embodiment 2, the permeable dam base 1 includes a horizontal platform 11 and two side walls 12. The horizontal platform 11 is sandwiched between the two side walls 12 and located below the filter dam body 2. Each side wall 12 corresponds to a side pier 22, and the side of each side pier 22 away from the main dam body 21 is connected to the corresponding side wall 12. As can be seen from the above structure, the horizontal platform 11 is parallel to the ground, and the side walls 12 are inclined or perpendicular to the ground. Through the cooperation of the horizontal platform 11 and the two side walls 12, a stable and flat installation space can be provided for the filter dam body 2. Furthermore, the two side walls 12 and the two side piers 22 of the filter dam body 2 form a one-to-one cooperative relationship. The side wall of each side pier 22 away from the main dam body 21 is fixedly connected to the inner side wall of the corresponding side wall 12, which not only intercepts sediment but also enhances the overall structural strength of the filter dam body 2.

[0034] A first structural joint 5 is provided on the permeable dam base 1. The first structural joint 5 is arranged along the front-to-back direction and penetrates the horizontal base 11, so as to divide the horizontal base 11 into two symmetrical base halves along the left-to-right direction. As can be seen from the above structure, when the number of permeable dam stages increases, a longer permeable dam base 1 is required. However, if the permeable dam base 1 is too long, it is prone to cracking due to concrete deformation and other factors. Therefore, by setting the first structural joint 5, the horizontal base 11 is divided into two symmetrical base halves along the left-to-right direction, thereby enabling the permeable dam base 1 to better adapt to changes in terrain and reduce the risk of cracking.

[0035] A second structural joint 6 is also provided on the permeable dam base 1. This second structural joint 6 is arranged in the left-right direction and penetrates the horizontal base 11 and the two sidewalls 12, dividing the two base half-sections into four centrally symmetrical base sub-sections in the front-back direction, and dividing the sidewalls 12 into two symmetrical sidewall half-sections in the front-back direction. As can be seen from the above structure, the provision of the second structural joint 6 can further improve the adaptability of the horizontal base 11 and sidewalls 12 to terrain changes, reduce the risk of cracking, and extend the service life of the permeable dam.

[0036] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A prefabricated permeable dam for a landscape water feature, characterized in that: It includes a permeable dam matrix (1) and several filter dams (2); the arrangement direction of the filter dams (2) is perpendicular to the extension direction of the permeable dam matrix (1); the several filter dams (2) are arranged at intervals along the extension direction of the permeable dam matrix (1) to separate the permeable dam matrix (1) and form multiple sedimentation areas (3).

2. The prefabricated permeable dam for landscape water bodies according to claim 1, characterized in that: The filter dam (2) includes a dam body main body (21) and two side piers (22); the dam body main body (21) includes multiple rows of filter bodies stacked in sequence from bottom to top; each row of filter bodies includes several filter monomers (4) arranged in sequence from left to right in the horizontal direction; the two side piers (22) are symmetrically supported on the left and right sides of the permeable dam matrix (1), and the dam body main body (21) is clamped between the two side piers (22).

3. The prefabricated permeable dam for landscape water bodies according to claim 2, characterized in that: The filter monomer (4) includes a support outer shell (41) and a wire cage (42); the outer contour of the support outer shell (41) is rectangular; the wire cage (42) is detachably fitted inside the support outer shell (41); the wire cage (42) is filled with filter media for filtering water bodies.

4. The prefabricated permeable dam for landscape water bodies according to claim 3, characterized in that: The support outer shell (41) includes a U-shaped plate (411) and two support frames (412); the two support frames (412) are respectively arranged on the front and back sides of the U-shaped plate (411), and can allow water bodies to pass through along the front and back directions of the U-shaped plate (411).

5. The prefabricated permeable dam for landscape water bodies according to claim 4, characterized in that: The shape of the support frame (412) is "day" shaped.

6. The prefabricated permeable dam for landscape water bodies according to claim 4, characterized in that: Several lifting lugs (413) are further provided on the inner wall of the top of the U-shaped plate (411).

7. The prefabricated permeable dam for landscape water bodies according to claim 3, characterized in that: A partition sheet (421) that divides the wire cage (42) into upper and lower layers as a whole is further provided inside the wire cage (42).

8. The prefabricated permeable dam for landscape water bodies according to claim 2, characterized in that: The permeable dam matrix (1) includes a horizontal base (11) and two side walls (12); the horizontal base (11) is clamped between the two side walls (12) and is located below the filter dam (2); the side walls (12) correspond to the side piers (22) one by one, and one side of each side pier (22) away from the dam body main body (21) is connected to the corresponding side wall (12).

9. The prefabricated permeable dam for landscape water bodies according to claim 8, characterized in that: A first structural joint (5) is provided on the permeable dam matrix (1); the first structural joint (5) is arranged in the front and back direction and penetrates through the horizontal base (11) to divide the horizontal base (11) into two symmetric base semi-regions in the left and right direction.

10. The prefabricated permeable dam for landscape water bodies according to claim 9, characterized in that: A second structural joint (6) is further provided on the permeable dam matrix (1); the second structural joint (6) is arranged in the left and right direction and penetrates through the horizontal base (11) and the two side walls (12) to further equally divide the two base semi-regions in the front and back direction to form four symmetric base sub-regions centered, and to divide the side walls (12) into two symmetric side wall semi-regions in the front and back direction.

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