Ecological revetment system with rainwater purification function

Abstract

The utility model provides a kind of ecological revetment system with rainwater purification function, including revetment main body, scouring prevention zone, intercepting zone and purification zone;Scouring prevention zone is set to revetment upper end, including multiple flatly laid block stone;At least two levels intercepting zone are arranged in ladder shape interval along revetment gradient direction, at least one intercepting zone is adjacent to scouring prevention zone, and at least one intercepting zone is adjacent to water body, and intercepting zone includes gabion retaining wall;Purification zone is set between adjacent intercepting zone, including aquatic plant.The utility model reduces the scouring of rainwater to soil by the cooperation of scouring prevention zone, intercepting zone and purification zone, and realizes the effective purification of rainwater, enriches revetment ecological system simultaneously, organically combines soil protection, rainwater purification and vegetation planting, and constitutes a complete ecological system.

Description

Technical Field

[0001] This utility model belongs to the field of ecological revetment technology, and in particular relates to an ecological revetment system with rainwater purification function. Background Technology

[0002] Currently, the revetments of many rivers and lakes in China are mainly constructed using two methods: rigid vertical revetments and rigid sloping revetments. They are typically made of hard materials such as concrete and stones. While this method of shoreline treatment has played a positive role in flood control, the concrete revetments isolate the water, soil, and other organisms, preventing water quality circulation between the river channel and riverside vegetation, deteriorating the terrestrial vegetation space, and depriving some aquatic plants and animals of good living and habitat places. Therefore, these concrete revetments seriously damage the environment on which riverside organisms depend for survival. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an ecological revetment system with rainwater purification function, which organically combines soil protection, rainwater purification and vegetation planting to form a complete ecosystem.

[0004] The technical solution adopted by this utility model is: an ecological revetment system with rainwater purification function, including a revetment body, an anti-erosion belt, a sewage interception belt, and a purification belt; the anti-erosion belt is set at the upper end of the revetment body and includes multiple flat paved stones; at least two levels of the sewage interception belt are set in a stepped manner along the slope direction of the revetment, wherein at least one of the sewage interception belts is adjacent to the anti-erosion belt and at least one of the sewage interception belts is adjacent to a water body, and the sewage interception belt includes a gabion retaining wall; the purification belt is set between adjacent sewage interception belts and includes aquatic plants.

[0005] Furthermore, the intercepting belt is higher than the adjacent anti-scouring belt or the purification belt.

[0006] Furthermore, the intercepting strip includes a planting layer, the gabion retaining wall, and a concrete cushion layer arranged from top to bottom. The planting layer includes a planting substrate layer and water-resistant plants. A perforated intercepting net is provided at the top of the gabion retaining wall near the water body, and the perforated intercepting net is higher than the planting substrate layer.

[0007] Furthermore, the gabion retaining wall includes gabions and stones filled within the gabions; along the slope direction of the revetment, the particle size of the stones within different gabion retaining walls gradually decreases.

[0008] Furthermore, the purification zone also includes, from top to bottom, a bark covering layer, a planting soil layer, a permeable geotextile, and a gravel cushion layer.

[0009] Furthermore, the crushed stone cushion layer is higher than the adjacent concrete cushion layer.

[0010] Furthermore, the bark covering layer is lower than the adjacent gabion retaining wall.

[0011] Furthermore, an impermeable geotextile is embedded within the main body of the revetment, extending from the bottom of the water to below the anti-scour zone.

[0012] Furthermore, the upper and lower surfaces of the impermeable geotextile below the concrete cushion layer are respectively provided with cement mortar protective layers, and the concrete cushion layer is set on top of the upper cement mortar protective layer.

[0013] Furthermore, the intercepting strip includes a primary intercepting strip, a secondary intercepting strip, and a tertiary intercepting strip arranged from top to bottom along the slope direction of the revetment; the stone particle size of the primary intercepting strip is 12-15cm, the stone particle size of the secondary intercepting strip is 9-11cm, and the stone particle size of the tertiary intercepting strip is 6-8cm.

[0014] The advantages and positive effects of this utility model are:

[0015] (1) This application reduces the erosion of the soil by combining the anti-scour belt, the interception belt and the purification belt, and achieves effective purification of rainwater. At the same time, it enriches the revetment ecosystem and organically combines soil protection, rainwater purification and vegetation planting to form a complete ecosystem.

[0016] (2) This application sets up multi-level intercepting belts along the slope of the revetment, and uses the particle size characteristics of the stones in the intercepting belts of different levels to filter pollutants in rainwater step by step, thereby achieving step-by-step purification of rainwater.

[0017] (3) By setting up intercepting belts, not only can rainwater be purified, but the stability of the overall system is also improved; by setting up purification belts, water quality is purified through physical and biological processes, forming a multi-level purification system from top to bottom, while enriching the revetment ecology. Attached Figure Description

[0018] Figure 1 This is a top view of a specific embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional schematic diagram of a specific embodiment of the present invention.

[0020] In the picture:

[0021] 1-1. Stone blocks; 2-1. Primary gabion retaining wall; 2-2. Secondary gabion retaining wall; 2-3. Tertiary gabion retaining wall; 2-4. Perforated intercepting mesh; 2-5. Planting substrate layer; 2-6. Concrete cushion layer; 2-7. Impermeable geotextile; 2-8. Cement mortar protective layer; 3-1. Bark covering layer; 3-2. Planting soil; 3-3. Permeable geotextile; 3-4. Crushed stone cushion layer. Detailed Implementation

[0022] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0023] This utility model proposes an ecological revetment system with rainwater purification function. A revetment refers to an engineering structure built at the edge of a water body and the boundary between land and water, used to protect riverbanks, lakeshores, or coastlines from erosion by water flow and waves, while also serving multiple functions such as stabilizing bank slopes, preventing soil erosion, and creating a landscape. Compared to existing hard revetments constructed with concrete, stones, and other rigid materials, the revetment system proposed in this application not only filters rainwater and reduces runoff velocity, but also organically combines soil protection, rainwater purification, and vegetation planting, forming a complete ecosystem.

[0024] like Figure 1 , Figure 2 As shown in the figure, this utility model embodiment proposes an ecological revetment system with rainwater purification function, including a revetment body, an anti-erosion strip, a sewage interception strip, and a purification strip; the anti-erosion strip is set at the upper end of the revetment and includes multiple flat paved stones 1-1; at least two levels of sewage interception strips are set in a stepped manner along the slope direction of the revetment, at least one sewage interception strip is adjacent to the anti-erosion strip, and at least one sewage interception strip is adjacent to a water body, the sewage interception strip includes a gabion retaining wall; the purification strip is set between adjacent sewage interception strips and includes aquatic plants.

[0025] In the above embodiment, the anti-erosion strip composed of boulders 1-1 is laid on the upper part of the revetment to reduce the erosion of the soil by rainwater and to perform preliminary purification. The boulders 1-1 are large boulders with sharp edges or smooth pebbles. They are laid in a dense manner and laid with a set width along the slope of the revetment. By laying the boulders 1-1 on the upper part of the revetment, the erosion speed of the soil on the upper part of the revetment can be effectively reduced, and the rainwater can be initially filtered to prevent large debris from moving downward with the rainwater.

[0026] The aforementioned scour protection strip is used to further intercept impurities such as mud and leaves, thereby better purifying rainwater. Multiple intercepting strips are set along the slope of the revetment. Due to the good stability and purification function of the gabion retaining wall, each scour protection strip can directly intercept mud and impurities from its upper side. The intercepting strip adjacent to the scour protection strip can also provide effective support for the scour strip 1-1, preventing the 1-1 boulders from moving or rolling down the revetment in the event of high water flow. The intercepting strip adjacent to the water body forms the final line of protection, ensuring that rainwater flows into the water body after being filtered through this intercepting strip, avoiding the presence of impurities.

[0027] The aforementioned purification belt is used to intercept, purify, and collect rainwater for reuse. It can store a certain amount of water. When rainfall is low, the rainwater stored in the purification belt can provide a water source for its aquatic plants, thus achieving the dual effect of purifying water quality and ecological planting.

[0028] It is understandable that the scour protection belt, interception belt, and purification belt are all arranged in a rectangular pattern along the length of the revetment. Through the above technical solution, the scour protection belt is set at the upper end of the revetment to reduce the scouring of the soil by rainwater and to initially purify the rainwater. Then, the multi-stage interception belt further intercepts impurities such as soil and leaves. At the same time, the purification belt intercepts, purifies, and collects rainwater for reuse. Soil protection, rainwater purification, and vegetation planting are organically combined to form a complete ecosystem.

[0029] Furthermore, in this embodiment, the intercepting strip is higher than the adjacent scour protection strip or purification strip. Since the intercepting strip gradually decreases in a stepped manner along its slope, setting it higher than the adjacent scour protection strip or purification strip improves the stability of the scour protection strip and purification strip, while also preventing soil loss from the scour protection strip and purification strip, limiting the water flow path, and ensuring the intercepting effect of the intercepting strip.

[0030] Furthermore, in this embodiment, the intercepting strip includes a planting layer, a gabion retaining wall, and a concrete cushion layer 2-6 arranged from top to bottom. The planting layer includes a planting substrate layer 2-5 and water-tolerant plants. A perforated intercepting net 2-4 is provided at the top of the gabion near the water body, and the perforated intercepting net 2-4 is higher than the planting substrate layer 2-5. By setting a planting layer on the upper part of the gabion retaining wall, not only can pollutants in rainwater be filtered, but the landscape effect can also be enhanced. By setting the perforated intercepting net 2-4, in addition to purifying rainwater, it can also prevent the loss of the planting substrate layer 2-5. By setting the concrete cushion layer 2-6, the stability of the gabion retaining wall structure can be increased, thereby improving the stability of the overall revetment system.

[0031] Furthermore, in this embodiment, the gabion retaining wall includes gabions and stones filled within them. Along the slope of the revetment, the particle size of the stones within different gabion retaining walls gradually decreases. The stones filled within the gabions primarily function to filter and purify rainwater. Their particle size distribution allows for the gradual filtration of pollutants in rainwater through the small drainage spaces and the gaps between larger particles, achieving step-by-step purification of the rainwater. The gradual decrease in stone particle size from top to bottom along the revetment slope not only helps reduce soil erosion but also effectively improves filtration efficiency. As rainwater passes through layers of stones of different sizes, suspended solids and fine particles are gradually removed, achieving gradual purification of the rainwater and ultimately resulting in better water quality purification.

[0032] Furthermore, in this embodiment, the purification belt further includes, from top to bottom, a bark covering layer 3-1, a planting soil layer 3-2, a permeable geotextile layer 3-3, and a gravel cushion layer 3-4. The aquatic plants in the purification belt can absorb nutrients from the water, effectively reducing pollutants; the bark covering layer 3-1 can regulate soil moisture, slow soil erosion, and provide a stable growth environment for aquatic plants; the planting soil layer 3-2, as the main plant growth medium, provides necessary nutrients and oxygen, ensuring healthy root growth, and can also store an appropriate amount of rainwater for plant growth; the permeable geotextile layer 3-3 serves as a filter and drainage system, preventing soil loss while allowing water infiltration; the gravel cushion layer 3-4 enhances the stability of the entire purification belt and allows water to flow towards the gabion retaining wall on one side. The purification belt purifies water quality through a synergistic combination of physical and biological processes, forming a multi-layered purification system from top to bottom.

[0033] Furthermore, in this embodiment, the crushed stone cushion layer 3-4 is higher than the adjacent concrete cushion layer 2-6 to ensure that rainwater flowing through the crushed stone cushion layer 3-4 can flow to the gabion retaining wall, so that the gabion retaining wall can effectively perform its filtering and purification function, and ultimately achieve step-by-step purification.

[0034] Furthermore, in this embodiment of the application, the bark covering layer 3-1 is lower than the adjacent gabion retaining wall. This arrangement restricts the rainwater flow path of the purification zone, allowing it to flow from top to bottom through the bark covering layer 3-1, the planting soil layer 3-2, the permeable geotextile 3-3, and the gravel cushion layer 3-4, ensuring that the purification zone can store enough water for the growth of aquatic plants.

[0035] Furthermore, in this embodiment, an impermeable geotextile 2-7 is embedded within the main body of the revetment, extending from the bottom of the water to below the scour protection zone. This arrangement effectively prevents the downward seepage of water within the purification zone, thus avoiding the subsidence of the loess in the main body of the revetment and ensuring that the soil below the impermeable geotextile 2-7 does not sink, thereby improving the stability of the purification zone and the overall system structure.

[0036] In the above embodiments, the revetment body can be ordinary fill, original revetment soil, or a combination of both. The ordinary fill can be the dried original revetment soil or ordinary soil that meets the revetment backfill requirements.

[0037] Furthermore, in this embodiment of the application, the upper and lower surfaces of the impermeable geotextile 2-7 below the concrete cushion layer 2-6 are respectively provided with cement mortar protective layers 2-8, and the concrete cushion layer 2-6 is set on the upper part of the cement mortar protective layer 2-8. Through this arrangement, the stability of the intercepting strip can be further improved.

[0038] In one specific embodiment, the intercepting strip includes a primary intercepting strip, a secondary intercepting strip, and a tertiary intercepting strip arranged from top to bottom along the slope of the revetment. The primary, secondary, and tertiary intercepting strips are respectively equipped with a primary gabion retaining wall 2-1, a secondary gabion retaining wall 2-2, and a tertiary gabion retaining wall 2-3. The stone particle size in the primary gabion retaining wall 2-1 is 12-15cm, the stone particle size in the secondary gabion retaining wall 2-2 is 9-11cm, and the stone particle size in the tertiary gabion retaining wall 2-3 is 6-8cm. Through this arrangement, impurities such as soil and leaves can be effectively intercepted, ensuring filtration efficiency. As rainwater passes through the stone layers of different particle sizes in sequence, the rainwater is gradually purified, ultimately achieving a good water purification effect.

[0039] Specifically, the primary intercepting belt is adjacent to the anti-scouring belt; a primary purification belt is set between the primary and secondary intercepting belts; a secondary purification belt is set between the secondary and tertiary intercepting belts; the tertiary intercepting belt is adjacent to the water body; and the height of the secondary purification belt is lower than that of the primary purification belt.

[0040] In this application, the number of intercepting and purification zones is set according to the width and slope of the revetment. In the above embodiments, the revetment is relatively wide and the slope is greater than 1:3. In other embodiments of this application, the revetment is moderately wide and the slope is greater than 1:3. The intercepting zone includes a primary intercepting zone and a secondary intercepting zone set from top to bottom along the slope direction of the revetment. The primary intercepting zone is adjacent to the anti-erosion zone. The secondary intercepting zone is adjacent to the water body. A purification zone is provided between the primary and secondary intercepting zones.

[0041] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. An ecological revetment system with rainwater purification function, characterized in that: The revetment includes a main body, an anti-erosion zone, a intercepting zone, and a purification zone. The anti-erosion zone is located at the upper end of the main body and includes multiple flat stones. At least two levels of the intercepting zones are arranged in a stepped manner along the slope of the revetment, wherein at least one intercepting zone is adjacent to the anti-erosion zone and at least one intercepting zone is adjacent to a water body, and the intercepting zone includes a gabion retaining wall. The purification zone is located between adjacent intercepting zones and includes aquatic plants.

2. The ecological revetment system with rainwater purification function according to claim 1, characterized in that: The intercepting belt is higher than the adjacent anti-scouring belt or the purification belt.

3. The ecological revetment system with rainwater purification function according to claim 2, characterized in that: The intercepting strip includes a planting layer, the gabion retaining wall, and a concrete cushion layer arranged from top to bottom. The planting layer includes a planting substrate layer and water-resistant plants. A perforated intercepting net is provided at the top of the gabion retaining wall near the water body, and the perforated intercepting net is higher than the planting substrate layer.

4. The ecological revetment system with rainwater purification function according to claim 3, characterized in that: The gabion retaining wall includes gabions and stones filled inside the gabions; along the slope direction of the revetment, the particle size of the stones inside different gabion retaining walls gradually decreases.

5. The ecological revetment system with rainwater purification function according to claim 3 or 4, characterized in that: The purification zone also includes, from top to bottom, a bark covering layer, a planting soil layer, a permeable geotextile, and a gravel cushion layer.

6. The ecological revetment system with rainwater purification function according to claim 5, characterized in that: The crushed stone cushion layer is higher than the adjacent concrete cushion layer.

7. The ecological revetment system with rainwater purification function according to claim 6, characterized in that: The bark covering layer is lower than the adjacent gabion retaining wall.

8. The ecological revetment system with rainwater purification function according to claim 3, 4 or 6, characterized in that: The revetment body is equipped with an impermeable geotextile, which extends from the bottom of the water to below the anti-scour zone.

9. The ecological revetment system with rainwater purification function according to claim 8, characterized in that: The upper and lower surfaces of the impermeable geotextile below the concrete cushion layer are respectively provided with cement mortar protective layers, and the concrete cushion layer is set on top of the upper cement mortar protective layer.

10. The ecological revetment system with rainwater purification function according to claim 4, characterized in that: The intercepting strip includes a primary intercepting strip, a secondary intercepting strip, and a tertiary intercepting strip arranged from top to bottom along the slope of the revetment; the stone particle size of the primary intercepting strip is 12-15cm, the stone particle size of the secondary intercepting strip is 9-11cm, and the stone particle size of the tertiary intercepting strip is 6-8cm.

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