Multi-stage purification and storage ecological slope system

Abstract

The utility model relates to a kind of multi-stage purification regulation and storage ecological slope system, belong to slope protection engineering field, it includes multi-stage ridge slope, ladder type biological purification pond, rainwater regulation and storage garden, retaining wall, modular water storage system, automatic irrigation system;Slope is changed into multi-stage ridge slope topography, rainwater is provided with retention site on one hand, increase rainwater infiltration time, and match vegetation buffer zone, preliminary purification is carried out to runoff pollution.Ladder type ecological purification pond and rainwater regulation and storage garden etc. biological retention facilities are designed at the end of slope, so that rainwater is purified again and collected and used.The utility model structure can effectively reduce rainwater runoff pollution, realize the natural penetration, natural purification, natural storage of rainwater, meet the sponge city design concept, with significant economic and environmental benefits.

Description

Technical Field

[0001] This utility model belongs to the field of slope protection engineering, and in particular relates to a multi-stage purification and storage ecological slope system, which is suitable for slope protection engineering in mountain sponge cities. Background Technology

[0002] With the further acceleration of urbanization, the contradiction of urban water shortage has intensified, and environmental and ecological problems have expanded simultaneously. In order to solve the series of contradictions such as water shortage, environment, and ecology, people have focused their attention on the construction of rainwater collection and utilization systems. This refers to the collection and utilization of rainwater runoff collected from building roofs and hardened surfaces such as roads and squares, and the accumulation of rainwater through collection, water transportation, water purification, and storage channels. The rainwater is then used for greening, landscape water bodies, washing, and providing rainwater replenishment for groundwater sources, in order to achieve the goal of comprehensive utilization of rainwater resources and water conservation. Currently, traditional ecological slope systems, such as the slope rainwater collection and automatic irrigation system disclosed in the utility model patent with authorization announcement number CN209710978U, include water guide channels that are staggered and buried on the surface of the slope body; a water collection channel is excavated and poured with concrete at the bottom edge of the slope body, and the lower outlet of the water guide channel is connected to the inside of the water collection channel; a filter pool is excavated on the flat ground on one side of the bottom of the slope body. This utility model uses a pebble layer and a fine sand layer to achieve step-like filtration of rainwater from top to bottom, and at the same time uses a filter non-woven fabric to achieve finer filtration.

[0003] Mountainous cities have significant topographical variations, which makes runoff pollution more severe compared to cities on flat land. Furthermore, the increased slope hinders rainwater infiltration and increases runoff velocity. Therefore, traditional rainwater harvesting systems are ineffective in reducing rainwater runoff pollution and cannot meet the needs of mountainous cities. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage purification and storage ecological slope system to solve the problem that traditional ecological slope systems cannot effectively reduce rainwater runoff pollution.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model relates to a multi-level purification and water storage ecological slope system, which includes a multi-level ridge slope, a stepped biological purification pond, a rainwater storage garden, a retaining wall, and a modular water storage system. The multi-level ridge slope is formed by multiple furrows creating a wavy terrain, with a retaining wall at the bottom. The stepped ecological purification pond is located on the downslope side of the retaining wall. Each stepped ecological purification pond consists of, from bottom to top, waterproof geotextile A, a gravel layer A, a permeable geotextile A, and planting soil A. A concrete retaining wall is provided on the downslope side of each stepped ecological purification pond. A seepage pipe is buried in the gravel layer A, with one end of the seepage pipe passing through the concrete retaining wall. The rainwater storage garden is located on the downslope side of the bottom stepped biological purification pond. The rainwater storage garden is equipped with a modular water storage system and a water collection well. The modular water storage system and the water collection well are connected by a water pipe.

[0006] Preferably, the rainwater storage garden is equipped with an overflow well, which is connected to the rainwater drainage system.

[0007] Preferably, anti-erosion wooden stakes are installed around the outlet of the seepage blind pipe.

[0008] Preferably, the rainwater storage garden consists of, from bottom to top, waterproof geotextile B, gravel layer B, permeable geotextile B, and planting soil B.

[0009] Preferably, an automatic irrigation system is provided at the multi-level ridge slope, and the automatic irrigation system is connected to a modular water storage system through pipelines.

[0010] Compared with the prior art, the present invention has the following features and beneficial effects: The multi-level purification and storage ecological slope system involved in this invention transforms slopes into multi-level ridge terrain. On the one hand, it provides a retention area for rainwater, increases the infiltration time of rainwater, and, together with a vegetation buffer zone, performs preliminary purification of runoff pollution. On the other hand, at the end of the slope, it designs a stepped ecological purification pond and rainwater storage garden and other biological retention facilities, so that rainwater can be purified again and collected for utilization, effectively reducing rainwater runoff pollution and realizing the natural infiltration, natural purification and natural storage of rainwater. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a multi-stage purification and water storage ecological slope system. In the diagram: 1. Multi-level ridge slope, 2. Stepped ecological purification pond, 21. Waterproof geotextile A, 22. Crushed stone layer A, 23. Permeable drainage pipe, 24. Permeable geotextile A, 25. Planting soil A, 26. Anti-erosion wooden piles, 27. Concrete retaining wall, 3. Rainwater storage garden, 31. Waterproof geotextile B, 32. Crushed stone layer B, 33. Permeable geotextile B, 34. Planting soil B, 35. Overflow well, 36. Water collection well, 37. Water pipe, 38. Modular water storage system, 39. Rainwater drainage system, 4. Retaining wall, 5. Automatic irrigation system. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are for the purpose of explaining the present invention and are not limited to the following embodiments.

[0013] like Figure 1 As shown, this utility model relates to a multi-level purification and water storage ecological slope system, comprising a multi-level ridge slope 1, a stepped biological purification pond 2, a rainwater storage garden 3, a retaining wall 4, a modular water storage system 38, and an automatic irrigation system 5. The multi-level ridge slope 1 is formed by multiple furrows creating a wavy terrain, with a retaining wall 4 at the bottom. The stepped ecological purification pond 2 is located on the downslope side of the retaining wall. The stepped ecological purification pond 2 consists of, from bottom to top, waterproof geotextile A21, a gravel layer A22, permeable geotextile A24, and planting soil A25. A concrete retaining wall 27 is provided on the downslope side of each stepped ecological purification pond 2. A seepage blind pipe 23 is buried in the gravel layer A22. One end of the seepage blind pipe 23 passes through the concrete retaining wall 27, and anti-erosion wooden piles 26 are set around the outlet of the seepage blind pipe 23. The rainwater storage garden 3 is located on the downslope side of the bottom stepped biological purification pond 2. The rainwater storage garden 3 consists of, from bottom to top, waterproof geotextile B31, gravel layer B32, permeable geotextile B33, and planting soil B34; the rainwater storage garden 3 is equipped with a modular water storage system 38 and a water collection well 36, which are connected by a water pipe 37; the automatic irrigation system 5 is located at the multi-level ridge slope 1 and is connected to the modular water storage system 38 through a pipe; the rainwater storage garden 3 is equipped with an overflow well 35, which is connected to the rainwater drainage system 39; the multi-level ridge slope 1 is equipped with the automatic irrigation system 5.

[0014] The working principle of the multi-stage purification and storage ecological slope system involved in this invention is as follows: The multi-stage ridge slope 1 first provides a retention area for rainwater, increasing the infiltration time, and, combined with a vegetation buffer zone, performs preliminary purification of runoff pollution. After passing through the multi-stage ridge slope 1, the rainwater enters the stepped biological purification pond 2 and the rainwater storage garden 3. Through the biological retention facilities such as the stepped ecological purification pond 2 and the rainwater storage garden 3, the rainwater is further purified and collected for utilization, effectively reducing rainwater runoff pollution and achieving natural infiltration, natural purification, and natural storage of rainwater. The purified rainwater is collected in the modular water storage system 38. When needed, the slope vegetation is irrigated through the water collection blind well 36. When the modular water storage system 38 stores too much water, the rainwater is discharged into the rainwater drainage system 39 through the overflow well 35. When the modular water storage system 38 stores too little water, water is replenished to the modular water storage system 38 through the automatic irrigation system 5.

[0015] The present invention has been described in detail above with reference to the embodiments. However, the description is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made in accordance with the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A multi-stage purification and water storage ecological slope system, characterized in that: It includes a multi-level ridge slope (1), a stepped biological purification pond (2), a rainwater storage garden (3), a retaining wall (4), and a modular water storage system (38); the multi-level ridge slope (1) is formed by multiple furrows to create a wave-like terrain, with a retaining wall (4) at the bottom; the stepped ecological purification pond (2) is located on the downslope side of the retaining wall, and each stepped ecological purification pond (2) consists of, from bottom to top, waterproof geotextile A (21), gravel layer A (22), permeable geotextile A (24), and planting soil A (25), each The stepped ecological purification pond (2) is equipped with concrete retaining walls (27) on the downslope side. The crushed stone layer A (22) is buried with a seepage blind pipe (23), and one end of the seepage blind pipe (23) passes through the concrete retaining wall (27). The rainwater storage garden (3) is set on the downslope side of the bottom stepped biological purification pond (2). The rainwater storage garden (3) is equipped with a modular water storage system (38) and a water collection blind well (36). The modular water storage system (38) and the water collection blind well (36) are connected by a water pipe (37).

2. The multi-stage purification and water storage ecological slope system according to claim 1, characterized in that: The rainwater storage garden (3) is equipped with an overflow well (35), which is connected to the rainwater drainage system (39).

3. The multi-stage purification and water storage ecological slope system according to claim 1, characterized in that: Anti-erosion wooden stakes (26) are installed around the outlet of the seepage blind pipe (23).

4. The multi-stage purification and water storage ecological slope system according to claim 1, characterized in that: The rainwater storage garden (3) consists of, from bottom to top, waterproof geotextile B (31), gravel layer B (32), permeable geotextile B (33), and planting soil B (34).

5. The multi-stage purification and water storage ecological slope system according to claim 1, characterized in that: An automatic irrigation system (5) is provided at the multi-level ridge slope (1), and the automatic irrigation system (5) is connected to the modular water storage system (38) through a pipeline.

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