Intercepting type ecological protection slope

Abstract

The utility model discloses an interception type ecological protection slope which comprises a bank slope and collection system, a filtering and slow moving system and an interception purification system, and the bank slope and collection system is composed of a compacted soil layer, a bank road, a vegetation gentle slope, a permeable asphalt concrete retaining wall, a gravel layer and a concrete base retaining wall. The filtering and slow moving system is of a four-layer structure sequentially constructed from bottom to top, and the four-layer structure is composed of a concrete layer, a compacted soil layer, a gravel layer and a slow moving footpath laid by permeable asphalt concrete. The interception and purification system comprises an interception area formed between the permeable ecological concrete precast block retaining wall and the grouted rubble retaining wall, and a planting soil layer, a gravel layer and a vegetation layer are sequentially arranged in the interception area from bottom to top. The interception type ecological protection slope can be suitable for interception of rural production and living pollution in mountainous river channels, treated rural domestic sewage and agricultural non-point sources flowing out along with rainfall enter a protection slope system, pollutants can be further reduced, and therefore the amount of pollution entering the river is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ecological management and restoration, in particular to an interception-type ecological slope protection. Background Art

[0002] As an important part of the river, the river bank is an important link to ensure the lateral connectivity between the water area and the land. The riverside space is an important environmental protection infrastructure with both ecological and cultural service functions. At present, the centralized treatment of domestic sewage has been basically realized in rural areas, but it is mainly based on small-scale treatment units. The quality of sewage effluent is easily affected by temperature, rainfall, etc., and the treated sewage is mostly discharged directly into the river, lacking the link to reduce the pollution migration path. In addition, agricultural non-point sources are also an important source of river pollution. Meeting people's growing demand for a better life and building happy rivers and lakes is an important task at present. How to reasonably transform rural mountainous rivers, reduce pollutants entering the river, and restore the ecological functions of the river is one of the key difficulties in the current construction of happy rivers and lakes. Utility Model Content

[0003] The purpose of the utility model is to provide an interception-type ecological slope protection, which is suitable for intercepting rural production and living pollution in mountainous rivers, and can further reduce pollutants, thereby reducing the amount of pollution entering the river, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an interception-type ecological slope protection, including a bank slope and a collection system, a filtering and slow-moving system, and an interception and purification system, wherein the bank slope and the collection system are composed of a compacted soil layer, a bank road, a vegetation gentle slope, a permeable asphalt concrete retaining wall, a crushed stone layer, and a concrete base retaining wall; the bank road is paved on the compacted soil layer on the river bank, and a vegetation gentle slope is set on both sides of the river bank, and a concrete base retaining wall is built on the bank side below the vegetation gentle slope; the crushed stone layer is laid in the ditch formed between the concrete base retaining wall and the permeable asphalt concrete retaining wall At the bottom, a permeable asphalt concrete retaining wall is built on the river side; the filtration and slow-moving system is constructed in four layers from bottom to top, which are respectively composed of a concrete layer, a compacted soil layer, a crushed stone layer and a slow-moving walkway paved with permeable asphalt concrete; the interception and purification system includes a permeable ecological concrete precast block retaining wall and a mortar-laid stone retaining wall; the permeable ecological concrete precast block retaining wall is arranged close to the bank side, and the mortar-laid stone retaining wall is arranged in the water body close to the river bank, and an interception area is formed between the permeable ecological concrete precast block retaining wall and the mortar-laid stone retaining wall, and the interception area is provided with a planting soil layer, a crushed stone layer and a vegetation layer from bottom to top.

[0005] Preferably, the vegetation gentle slope is arranged on the river side at an area ratio of 1:5.

[0006] Preferably, the thickness of the concrete base retaining wall constructed on the bank side is 10-15 cm.

[0007] Preferably, the depth and width of the ditch are determined according to the layout space of the river bank, and the thickness of the gravel layer laid at the bottom of the ditch is 5-8 cm.

[0008] Preferably, the thickness of the permeable asphalt concrete retaining wall constructed on the river side is 10-15 cm.

[0009] Preferably, the gravel layer in the filtering and slow-moving system is laid with a thickness of 30-40 cm, and the slow-moving walkway laid above the gravel layer is water-permeable.

[0010] Preferably, the permeable ecological concrete prefabricated block retaining wall is constructed by stacking prefabricated blocks, and its thickness is not less than 60 cm.

[0011] Preferably, the planting soil layer has a thickness of 10-15 cm.

[0012] Preferably, the laying thickness of the gravel layer in the interception area is 15-20 cm.

[0013] Preferably, the mortar-laid stone retaining wall is built with block stone mortar, and its width is determined according to the actual geological conditions and the width of the slope protection, and is not less than 70 cm.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] This interception-type ecological slope protection, through the setting of bank slope and collection system, filtration and slow-moving system and interception and purification system, can be used to intercept rural production and domestic pollution in mountainous rivers. The treated domestic sewage in rural areas and agricultural non-point sources flowing out with rainfall entering the slope protection system can further reduce pollutants, thereby reducing the amount of pollution entering the river. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the slope protection of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall top view of the slope protection of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the slope protection collection system of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the slope protection, filtration and slow-moving system of the utility model;

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the slope protection interception and purification system of the utility model.

[0021] In the figure: 1. Compacted soil layer; 2. Shore road; 3. Vegetated gentle slope; 4. Permeable asphalt concrete retaining wall; 5. Gravel layer; 6. Concrete base retaining wall; 7. Permeable ecological concrete precast block retaining wall; 8. Planting soil layer; 9. Vegetation layer; 10. Mortared stone retaining wall; 11. Water body; 12. Concrete layer; 13. Slow walking path. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 In this embodiment, an interception-type ecological slope protection is provided, including a bank slope and a collection system, a filtering and slow-moving system, and an interception and purification system, wherein the bank slope and the collection system are composed of a compacted soil layer 1, a bank road 2, a vegetation gentle slope 3, a permeable asphalt concrete retaining wall 4, a crushed stone layer 5, and a concrete base retaining wall 6; the bank road 2 is laid on the compacted soil layer 1 on the river bank, and a vegetation gentle slope 3 is set on both sides of the river bank. The vegetation gentle slope 3 is arranged on the river side at an area ratio of 1:5, and a concrete base retaining wall 6 is built on the bank side below the vegetation gentle slope 3. The thickness of the concrete base retaining wall 6 on the bank side is 10-15 cm; the crushed stone layer 5 is laid on the concrete base retaining wall 6 and the permeable asphalt concrete The bottom of the ditch formed between the retaining walls 4 can generally be arranged with a depth of about 50cm and a width of 20-30cm. The specific depth and width can be determined according to the layout space of the river bank. The thickness of the crushed stone layer 5 laid at the bottom of the ditch is 5-8cm. The crushed stone layer 5 uses gravel from the riverbed, which is easy to obtain. At the same time, this layer can effectively remove P; the permeable asphalt concrete retaining wall 4 is built on the river side. The permeable asphalt concrete retaining wall 4 is made of prefabricated blocks mixed with asphalt, concrete and permeable concrete enhancer (binder) and other materials in a certain proportion. It has certain permeability and a firm structure. It has been widely used and the technology is mature. It is widely used in sponge city construction, waterfront greenway construction in urban parks and other projects.

[0024] The filtering and slow-moving system in this embodiment is constructed with four layers from bottom to top, which are respectively composed of a concrete layer 12, a compacted soil layer 1, a crushed stone layer 5 and a slow-moving walkway 13 paved with permeable asphalt concrete; its width can be constructed according to the width standard of the slow-moving walkway 13, preferably 2-2.5m, and can be appropriately relaxed if there is space for arrangement. The bottom layer is a concrete layer 12 as a cushion base, which is covered with a certain thickness of compacted soil layer 1, which can have a certain buffering effect between the upper crushed stone layer 5 and the concrete layer 12, which is beneficial to the stability of the upper slow-moving walkway 13; the pores of the crushed stone layer 5 can be filled with fine sand to increase the stability of the crushed stone layer 5, and the fine sand has strong permeability and filtration, and the thickness of this layer can be 30-40cm; the top layer is a slow-moving walkway 13 constructed with permeable asphalt concrete, and its composition is the same as that of the permeable asphalt concrete retaining wall 4, and rainwater can infiltrate into the crushed stone layer 5 through the road surface.

[0025] The interception and purification system in this embodiment includes a permeable ecological concrete precast block retaining wall 7 and a mortar-made stone retaining wall 10; the permeable ecological concrete precast block retaining wall 7 is arranged close to the bank side, and the mortar-made stone retaining wall 10 is arranged in a water body 11 close to the river bank, and an interception area is formed between the permeable ecological concrete precast block retaining wall 7 and the mortar-made stone retaining wall 10, and a planting soil layer 8, a gravel layer 5 and a vegetation layer 9 are arranged in the interception area from bottom to top. Among them, the permeable ecological concrete prefabricated block retaining wall 7 is a kind of ecological permeable concrete cast, in which the ecological concrete is composed of cement, water, permeable concrete enhancer (binder) mixed with high-quality aggregates of the same particle size or discontinuous grading, and has a mixed material with a certain porosity, which can achieve drainage, anti-skid, sound absorption, noise reduction, and water seepage effects. The permeable ecological concrete prefabricated block retaining wall 7 on the bank side considers stability, and its width should not be too small, not less than 60cm. The permeable ecological concrete prefabricated block retaining wall 7 is constructed by prefabricated block stacking; the planting soil layer 8 is 10-15cm thick, which is mainly conducive to the growth of emergent vegetation, the gravel layer 5 is 15-20cm thick, and the emergent plants should adopt local species that are purification, absorption and easy to maintain; the width of the interception and purification area can be determined according to the actual sewage volume, the width is not less than 60cm, and the depth is not less than 100cm. At the same time, considering the slope factor in mountainous areas, small weirs should be built in the purification area at intervals. The dam top should be lower than the riverside revetment top, and a 20cm height can be reserved. The mortar-laid stone retaining wall 10 can be made of traditional block mortar, and the width should not be less than 70cm. The specific width should be determined according to the actual geological conditions and the width of the slope protection. After the surface runoff passes through the interception and purification area, it will flow into the river from the mortar-laid stone slope top.

[0026] In summary: the utility model provides an interception-type ecological slope protection, which not only has a collection function through the set bank slope and collection system, but also has an autonomous aeration function constructed by using the slope of the mountain area and a preliminary filtration and purification function using the bottom gravel layer 5; secondly, the set filtration and slow-moving system is combined with the greenway construction, and the rainwater passing through the collection system is further filtered through the gravel layer 5 and the permeable retaining wall of the filtration system; in addition, the set interception and purification system increases the hydraulic retention time and uses emergent plants and gravel layers for further purification, so that the utility model can be applied to the interception of rural production and living pollution in mountainous rivers. The treated domestic sewage in rural areas and the agricultural non-point sources flowing out with rainfall entering the slope protection system can further reduce pollutants, thereby reducing the amount of pollution entering the river.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An interception-type ecological slope protection, including a bank slope and a collection system, a filtering and slow-moving system, and an interception and purification system, characterized in that: The bank slope and collection system is composed of a compacted soil layer (1), a bank road (2), a vegetation gentle slope (3), a permeable asphalt concrete retaining wall (4), a crushed stone layer (5) and a concrete base retaining wall (6); the bank road (2) is laid on the compacted soil layer (1) on the river bank, and a vegetation gentle slope (3) is set on both sides of the river bank, and a concrete base retaining wall (6) is built on the bank side below the vegetation gentle slope (3); the crushed stone layer (5) is laid on the bottom of the ditch formed between the concrete base retaining wall (6) and the permeable asphalt concrete retaining wall (4), and the permeable asphalt concrete retaining wall (4) is built on the river side; the filtering and slow-moving system is from bottom to A four-layer structure is sequentially constructed on the upper surface, which is respectively composed of a concrete layer (12), a compacted soil layer (1), a crushed stone layer (5) and a slow-moving walkway (13) paved with permeable asphalt concrete; the interception and purification system comprises a permeable ecological concrete prefabricated block retaining wall (7) and a mortar-laid stone retaining wall (10); the permeable ecological concrete prefabricated block retaining wall (7) is arranged close to the bank side, and the mortar-laid stone retaining wall (10) is arranged in a water body (11) close to the river bank; an interception zone is formed between the permeable ecological concrete prefabricated block retaining wall (7) and the mortar-laid stone retaining wall (10), and a planting soil layer (8), a crushed stone layer (5) and a vegetation layer (9) are sequentially arranged in the interception zone from bottom to top.

2. The interception-type ecological slope protection according to claim 1 is characterized by: The vegetation gentle slope (3) is arranged on the river side at an area ratio of 1:

5.

3. The interception-type ecological slope protection according to claim 1 is characterized by: The thickness of the concrete base retaining wall (6) constructed on the bank side is 10-15 cm.

4. The interception-type ecological slope protection according to claim 1 is characterized by: The depth and width of the ditch are determined according to the layout space of the river bank, and the thickness of the gravel layer (5) laid at the bottom of the ditch is 5-8 cm.

5. The interception-type ecological slope protection according to claim 1 is characterized by: The thickness of the permeable asphalt concrete retaining wall (4) constructed on the river side is 10-15 cm.

6. The interception-type ecological slope protection according to claim 1 is characterized by: The laying thickness of the gravel layer (5) in the filtering and slow-moving system is 30-40 cm, and the slow-moving walkway (13) laid above the gravel layer (5) is water-permeable.

7. The interception-type ecological slope protection according to claim 1 is characterized by: The permeable ecological concrete prefabricated block retaining wall (7) is constructed by stacking prefabricated blocks, and its thickness is not less than 60 cm.

8. The interception-type ecological slope protection according to claim 1 is characterized by: The thickness of the planting soil layer (8) is 10-15 cm.

9. The interception-type ecological slope protection according to claim 1 is characterized by: The laying thickness of the crushed stone layer (5) in the interception area is 15-20 cm.

10. The interception-type ecological slope protection according to claim 1 is characterized by: The mortar-laid stone retaining wall (10) is built by using block stone mortar, and its width is determined according to the actual geological conditions and the width of the slope protection, and is not less than 70 cm.

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