An anti-seepage structure of an ecological wetland

Abstract

This utility model relates to an anti-seepage structure for ecological wetlands, including an ecological pond and an outwardly sloping ecological pond side. The key feature is that the bottom of the ecological pond, from bottom to top, consists of a compacted soil layer, a gravel cushion layer, a leveling layer, a composite geomembrane, and a planting soil weighting layer. The planting soil weighting layer is surrounded by ecological bags of the same height. The gravel cushion layer is 300mm thick and filled with gravel with a particle size range of 30mm-50mm. The leveling layer is 100mm thick. This anti-seepage structure for ecological wetlands, with its gravel cushion layer and leveling layer, can effectively filter out infiltrated groundwater when it is present. Furthermore, the coarse sand leveling ensures the bottom of the ecological pond remains horizontal, facilitating the laying of the composite geomembrane and maintaining the overall flatness of the pond bottom.

Description

Technical Field

[0001] This utility model relates to the field of ecological pond construction technology, specifically to an anti-seepage structure for ecological wetlands. Background Technology

[0002] Ecological ponds are generally used for advanced wastewater treatment. They have low concentrations of pollutants in the influent and are also known as advanced treatment ponds.

[0003] Ecological ponds have multiple functions, including: (1) Sewage treatment and water purification: Ecological ponds are used for deep treatment of sewage, which can effectively absorb and degrade pollutants such as heavy metals. During the high water season, the high temperature and large water volume are conducive to the growth of plants and microorganisms, thereby enhancing the degradation capacity of pollutants; during the low water season, the low water level and slow flow rate increase the residence time of sewage in the pond, which is conducive to full degradation; (2) Ecological restoration and environmental protection: Ecological ponds can not only purify water quality by planting aquatic plants and using different aquatic animals, but also restore and protect the natural ecosystem; (3) Landscape and recreational functions: Ecological ponds not only have ecological functions, but also have ornamental value and recreational functions, such as serving as tourist attractions and providing places for activities such as fishing and swimming; (4) Flood control and disaster reduction: Ecological ponds can reduce the threat of floods during the flood season, and at the same time, by improving the groundwater level and increasing air humidity, they can help prevent drought and improve the surrounding environment; (5) Agricultural irrigation and production development: Ecological ponds can also serve as rural water source projects, providing agricultural irrigation water and promoting agricultural production.

[0004] Ecological ponds are typically constructed downstream of lakes or rivers, or around lakes, usually in low-lying areas where groundwater is present. In areas with groundwater, the long-term erosion of the pond bottom can alter the pond's structure, affecting its overall structure. Increased groundwater levels can reduce soil stability, leading to foundation settlement and landslides. These groundwater-related problems indirectly impact the growth of plants and animals within the pond, damaging its ecological structure and preventing it from fulfilling its functions of ecological restoration and wastewater treatment. According to the "Design Code for Wastewater Stabilization Ponds," when the permeability coefficient (k) of the original soil at the bottom of an ecological pond exceeds 0.2 m / d, anti-seepage measures should be implemented. Therefore, incorporating anti-seepage structures into the construction of ecological ponds is a necessary measure in most cases. Utility Model Content

[0005] The purpose of this invention is to provide an anti-seepage structure for ecological wetlands to solve the problem that groundwater can damage the structure and soil stability of the bottom of ecological ponds in the construction of existing ecological ponds.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: An anti-seepage structure for an ecological wetland is provided, comprising an ecological pond and an outwardly inclined ecological pond slope. The ecological pond is characterized by the following layers arranged from bottom to top: a compacted soil layer, a gravel cushion layer, a leveling layer, a composite geomembrane, and a planting soil ballast layer. The planting soil ballast layer is surrounded by an ecological bag of the same height. The gravel cushion layer is 300mm thick, filled with gravel with a particle size range of 30mm-50mm, and the leveling layer is 100mm thick.

[0007] Furthermore, the leveling layer consists of crushed stone at the bottom and coarse sand at the top, with the crushed stone at the bottom having a particle size range of 10mm-30mm. The crushed stone is laid at a height of 70mm and the coarse sand is laid at a height of 30mm within the leveling layer.

[0008] Furthermore, the thickness of the planting soil ballast layer is 400mm.

[0009] Furthermore, the thickness of the planting soil ballast layer is 300mm.

[0010] Furthermore, ecological bags and vegetation bags are laid on the slope of the ecological pond. The ecological bags are laid on the lower part of the ecological pond slope, and the vegetation bags are laid on the upper part of the ecological pond slope. The area of ​​the ecological bags laid in the inclined direction of the ecological pond slope is 2-3 times that of the vegetation bags.

[0011] Furthermore, the amount of composite geomembrane laid is 600g / ㎡.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] (1) The seepage prevention structure of the ecological wetland of this utility model is provided with a crushed stone cushion layer and a leveling layer. When there is groundwater, the crushed stone cushion layer can quickly dissipate the pore water pressure and filter out the infiltrated groundwater in time. The crushed stone cushion layer can improve the bearing capacity and stability of the foundation. In addition, it can also be leveled by coarse sand to ensure that the bottom of the ecological pond remains horizontal, which is convenient for laying composite geomembrane and can also ensure the overall flatness of the pond bottom.

[0014] (2) The seepage prevention structure of the ecological wetland of this utility model is provided with a planting soil ballast layer to weigh down the bottom of the ecological pond and ensure the overall stability of the bottom of the ecological pond. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of the seepage prevention structure for an ecological wetland according to the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of Embodiment 2 of the seepage prevention structure for an ecological wetland according to the present invention.

[0018] Among them, 1-ecological pond, 2-ecological pond slope, 3-compacted soil layer, 4-gravel cushion layer, 5-leveling layer, 6-composite geomembrane, 7-planting soil weighting layer, 8-ecological bag, 9-gravel, 10-coarse sand. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below through specific embodiments. Example 1

[0020] This embodiment 1 provides a seepage-proof structure for ecological wetlands, such as... Figure 1 As shown, the ecological pond includes an ecological pond 1 and an outwardly sloping ecological pond slope 2. The bottom of the ecological pond consists of, from bottom to top, a compacted soil layer 3, a gravel cushion layer 4, a leveling layer 5, a composite geomembrane 6, and a planting soil weighting layer 7. The planting soil weighting layer is surrounded by ecological bags 8 of the same height as the layer. The gravel cushion layer 4 is 300mm thick and is filled with gravel with a particle size range of 30mm-50mm. The leveling layer 5 is 100mm thick.

[0021] In this embodiment, the lower part of the leveling layer 5 is gravel 9 and the upper part is coarse sand 10. The particle size range of the gravel in the lower part is 10mm-30mm. The gravel 9 in the leveling layer 5 is laid at a height of 70mm and the coarse sand 10 is laid at a height of 30mm.

[0022] The crushed stone under the crushed stone cushion layer 4 and leveling layer 5 can filter out infiltrated groundwater in a timely manner, preventing groundwater from seeping in and affecting the structure of the bottom of the ecological pond, or from seeping into the pond and affecting the organisms inside. The coarse sand on top of the leveling layer not only facilitates the laying of composite geomembranes and planting soil weight layers, providing a stable and smooth foundation for other structures and ensuring construction quality; the leveling layer combined with the crushed stone cushion layer also enhances the structural strength of the ecological pond, improving its compressive strength and durability; at the same time, the leveling layer smooths the surface of the ecological pond, avoiding unevenness and improving the aesthetics of the ecological pond.

[0023] The composite geomembrane 6 of this utility model has a laying amount of 600g / ㎡.

[0024] In this embodiment, the thickness of the planting soil ballast layer 7 is 400mm. While providing a habitat for organisms within the ecological pond, the planting soil ballast layer further enhances the overall structural stability of the pond. The seepage-proof structure of this embodiment is suitable for facultative ponds, aerobic ponds, and ponds with aquatic plants. Example 2

[0025] In this embodiment, the thickness of the planting soil ballast layer 7 is 300 mm. For example... Figure 2 As shown, based on this, in this embodiment, ecological bags 8 and vegetation bags 11 are laid on the ecological pond slope 2. Ecological bags 8 are laid at the lower part of the ecological pond slope 2, and vegetation bags 11 are laid at the upper part. The area of ​​ecological bags 8 laid in the inclined direction of the ecological pond slope 2 is 2-3 times that of vegetation bags 11. Ecological bags 8 have strong stability, effectively prevent ultraviolet radiation, and are highly corrosion-resistant. The laying of vegetation bags 11 and ecological bags 8 not only protects the slope but also, together with the planting soil ballast layer 7, provides weight. Furthermore, both vegetation bags and ecological bags contain soil mixed with plant seeds; the growth of plants inside the bags improves the surrounding environment and increases the vegetation coverage of the slope. Therefore, the seepage-proof structure of Embodiment 2 is more suitable for plant oxidation ponds.

[0026] The rest is the same as in Example 1.

[0027] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, all modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model. The technical content for which protection is sought in the present utility model has been fully recorded in the technical requirements.

Claims

1. An anti-seepage structure of an ecological wetland, comprising an ecological pond and an ecological pond slope which is outwardly inclined, characterized in that: The bottom of the ecological pond is arranged from bottom to top as follows: a compacted soil layer, a gravel cushion layer, a leveling layer, a composite geomembrane, and a planting soil ballast layer. The planting soil ballast layer is surrounded by ecological bags of the same height. The gravel cushion layer is 300mm thick and filled with gravel with a particle size range of 30mm-50mm. The leveling layer is 100mm thick.

2. The anti-seepage structure of an ecological wetland according to claim 1, characterized in that: The leveling layer consists of crushed stone at the bottom and coarse sand at the top. The particle size of the crushed stone at the bottom ranges from 10mm to 30mm. The crushed stone is laid at a height of 70mm and the coarse sand is laid at a height of 30mm within the leveling layer.

3. The anti-seepage structure of an ecological wetland according to claim 1, characterized in that: The thickness of the planting soil ballast layer is 400mm.

4. The anti-seepage structure of an ecological wetland according to claim 1, characterized in that: The thickness of the planting soil ballast layer is 300mm.

5. The anti-seepage structure of an ecological wetland according to claim 4, characterized in that: Ecological bags and vegetation bags are laid on the slope of the ecological pond. The ecological bags are laid on the lower part of the ecological pond slope, and the vegetation bags are laid on the upper part of the ecological pond slope. The area of ​​the ecological bags laid in the inclined direction of the ecological pond slope is 2-3 times that of the vegetation bags.

6. The seepage-proof structure for an ecological wetland according to claim 1, characterized in that: The composite geomembrane is laid at a rate of 600g / ㎡.

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