Artificial lake ecological slope protection based on pervious concrete

Abstract

The utility model relates to the technical field of slope protection, in particular to an artificial lake ecological protection slope based on pervious concrete. The overwater part sequentially comprises a slope greening layer used for planting ecological green plants, a soil-based nutrition layer used for supplying nutrients to the green plants, an ecological water-permeable concrete layer used for enhancing the drainage performance and providing stable support and a first sand gravel cushion layer laid on foundation soil and used for dispersing loads of an upper structure from outside to inside. The underwater part sequentially comprises a second sand gravel cushion layer and an inverted filter ecological concrete layer from inside to outside, wherein the inverted filter ecological concrete layer is used for adsorbing pollutants and filtering a water body. The utility model aims to solve the problems of insufficient slope protection water permeability and insufficient nutrient supply.

Description

Technical Field

[0001] The utility model relates to the technical field of slope protection, in particular to an artificial lake ecological slope protection based on permeable concrete. Background Technique

[0002] In water conservancy environmental engineering and landscape design, the design and construction of slope protection structures are important links to ensure slope stability and ecological environment protection. Traditional slope protection methods usually use hard materials such as concrete blocks and stone masonry. Although they can provide good structural stability, there are some significant deficiencies. For example, hard slope protection is impermeable, which is easy to cause an increase in surface runoff; and there is a lack of vegetation coverage, and the improvement effect on the ecological environment is limited.

[0003] In recent years, an ecological slope protection technology composed of plants or a combination of engineering and plants has emerged. After the excavation slope is formed, plants are planted to utilize the interaction between plants and rock and soil masses (root anchoring effect) to protect and reinforce the surface layer of the slope, so that it can not only meet the requirements for the stability of the slope surface layer, but also restore the damaged natural ecological environment. However, the existing ecological slope protection still has problems such as insufficient water permeability and insufficient nutrient supply, resulting in difficult vegetation growth. Content of the Utility Model

[0004] In order to solve the problems in the above background technique, the utility model provides an artificial lake ecological slope protection based on permeable concrete.

[0005] The solution adopted by the utility model to solve its technical problems is: an artificial lake ecological slope protection based on permeable concrete, which is arranged between the bank top and the lake bottom, including an above-water part and an underwater part. The above-water part sequentially includes a slope greening layer for planting ecological green plants from outside to inside, a soil base nutrition layer for supplying nutrients to the green plants, an ecological permeable concrete layer for enhancing drainage performance and providing stable support, and a first gravel cushion layer laid on the base soil for dispersing the load of the upper structure. The underwater part sequentially includes a second gravel cushion layer and an anti-filter ecological concrete layer for adsorbing pollutants and filtering water bodies.

[0006] By adopting the above technical solution,

[0007] Furthermore, a stone cage foot fixing for enhancing the slope protection stability is arranged between the underwater part and the lake bottom.

[0008] By adopting the above technical solution, the overall stability of the slope protection can be improved.

[0009] Furthermore, a concrete coping is arranged between the above-water part and the bank top.

[0010] By adopting the above technical solutions, it is possible to effectively prevent the slope protection edge from sliding or collapsing due to water flow scouring or gravity, and enhance the stability of the overall slope protection structure.

[0011] Furthermore, a greening covering soil layer is also provided between the soil-based nutrient layer and the slope surface greening layer.

[0012] By adopting the above technical solutions, it provides a soil environment for the vegetation to directly contact, ensuring good air permeability, water retention and fertility, which is beneficial to the growth and development of plant roots.

[0013] Furthermore, a lattice beam is also cast and fixed on the surface of the above-water part, and a first gravel cushion layer, an ecological permeable concrete layer, a soil-based nutrient layer, a greening covering soil layer and a slope surface greening layer are sequentially laid in the lattice beam.

[0014] By adopting the above technical solutions, the anti-sliding ability and overall stability of the entire slope protection system can be improved.

[0015] Furthermore, the soil-based nutrient layer is filled with natural soil, plant ash and long-acting compound fertilizer.

[0016] By adopting the above technical solutions, it provides a growth medium for the vegetation.

[0017] Furthermore, a de-alkalization solution for reducing alkalinity is sprayed on the surface of the ecological permeable concrete.

[0018] By adopting the above technical solutions, the alkalinity on the concrete surface can be reduced, and the germination rate of plant seeds and the survival rate of seedlings can be improved.

[0019] In summary, the beneficial effects of the present utility model are as follows: For the above-water part of the slope protection of the present utility model, by setting the first gravel cushion layer and the ecological permeable concrete layer, the rapid infiltration of rainwater can be promoted, and then by setting the soil-based nutrient layer, the greening covering soil layer and the de-alkalized ecological permeable concrete layer, necessary nutrients are provided for the growth of vegetation. For the underwater part of the slope protection, by setting the anti-filter ecological concrete layer, the pollutants in the water body can be adsorbed and filtered, thereby purifying the water quality. And by setting the concrete coping, the lattice beam, the cushion layer and the stone cage foot fixing, the overall structural stability of the slope protection can be increased.

[0020] The above description is only an overview of the technical solutions of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following preferred embodiments are specifically given and described in detail in conjunction with the drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of this embodiment;

[0022] Figure 2 is the flowchart of this embodiment.

[0023] In the figure: 1, the top of the bank; 2, the bottom of the lake; 3, the above-water part; 31, the slope greening layer; 32, the greening soil covering layer; 33, the soil base nutrient layer; 34, the ecological permeable concrete layer; 35, the first gravel cushion layer; 4, the underwater part; 41, the second gravel cushion layer; 42, the anti-filter ecological concrete layer; 5, the gabion foot protection; 6, the concrete coping; 7, the lattice beam. Specific embodiments

[0024] In order to make the content of the present utility model easier to be clearly understood, the following further illustrates the present utility model according to specific embodiments and in conjunction with the accompanying drawings.

[0025] It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. used herein is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. Unless otherwise specified, the meaning of "plurality" is two or more.

[0026] Unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0027] As Figures 1 to 2 shown, an artificial lake ecological slope protection based on permeable concrete is arranged between the top of the bank 1 and the bottom of the artificial lake 2. In this embodiment, it includes an above-water part 3 and an underwater part 4. The above-water part 3 sequentially includes from outside to inside a slope greening layer 31 for planting ecological green plants, a soil base nutrient layer 33 for supplying nutrients to the green plants, an ecological permeable concrete layer 34 for enhancing drainage performance and providing stable support, and a first gravel cushion layer 35 laid on the base soil for dispersing the load of the upper structure. The underwater part 4 sequentially includes from inside to outside a second gravel cushion layer 41 and an anti-filter ecological concrete layer 42 for adsorbing pollutants and filtering water bodies.

[0028] The ecological slope protection of this embodiment includes an above-water part 3 and a below-water part 4. The above-water part 3 of the slope protection structure from outside to inside successively includes a slope greening layer 31, a soil base nutrition layer 33, an ecological permeable concrete layer 34, and a first gravel cushion layer 35. The below-water part 4 from inside to outside is a second gravel cushion layer 41 and a filter permeable concrete. The slope greening layer 31 of this embodiment is composed of planted shrubs or turf, and grass seeds such as bermudagrass and tall fescue that are suitable for growing in river basins and have good scouring resistance and flood tolerance are selected. The thickness of the soil base nutrition layer 33 is preferably 50 mm, which is rich in organic matter and essential mineral nutrients, provides necessary nutrition for plant growth, provides an ideal growth medium for vegetation, and ensures the healthy growth of plants. The first gravel cushion layer 35, as a transition layer, is composed of gravel or other granular materials, has good drainage performance to prevent waterlogging, connects the lower base soil and the upper ecological grass-planting concrete layer, disperses the load of the upper structure, and enhances the overall stability. The thickness of the ecological permeable concrete layer 34 is preferably 100 mm, which has good water permeability, allows rainwater to quickly penetrate into the ground, reduces surface runoff, and reduces the flood risk; and it can provide growth space for plant roots, combined with the soil base nutrition layer 33, to support the rooting and growth of plants. In this embodiment, the raw materials of the cast-in-place permeable concrete are P.O42.5 ordinary Portland cement, the fine aggregate is river sand, the coarse aggregate is machine-made gravel with a particle size of 5 - 30 mm, the fly ash is F-type class II fly ash produced by a thermal power plant, the fiber is polypropylene fiber with a single filament length of 19 mm and a diameter of about 30 μm, the water reducer is FDN-AII type high-efficiency water reducer produced by Shandong Laiwu Wenhe Chemical Co., Ltd., and the mixing water is tap water. The concrete is mixed on-site using the slurry coating method, and methods such as one-time water addition and secondary water addition are used during mixing to enable the cement paste to evenly coat the surface of the aggregate. The thickness of the filter ecological concrete layer 42 in the below-water part 4 is 150 mm, which can filter pollutants and water bodies, prevent the loss of fine particles, keep the water quality clean, and the thickness of the second gravel cushion layer 41 is 50 mm, which can provide a stable base and enhance the overall stability.

[0029] As Figure 1 shown, a stone cage foot fixing 5 for enhancing the slope protection stability is arranged between the below-water part 4 of this embodiment and the lake bottom 2. The stone cage is usually made of metal mesh and filled with stones or other hard materials inside, which can effectively resist the erosion of water flow, prevent the soil at the lake bottom 2 from being scoured, and thus stabilize the foundation of the slope protection.

[0030] As Figure 1 shown, a concrete coping 6 is arranged between the above-water part 3 of this embodiment and the bank top 1. Greening trees are also planted on the bank top 1 of this embodiment, and a coping made of c20 plain concrete is arranged between the top of the slope protection in the above-water part 3 and the bank top 1, which can effectively prevent the edge of the slope protection from sliding or collapsing due to water flow scouring or gravity.

[0031] As Figure 1 shown, a greening soil covering layer 32 is further provided between the soil-based nutrient layer 33 and the slope greening layer 31 in this embodiment. The thickness of the greening soil covering layer 32 is preferably 40 mm, which provides a soil environment for the vegetation to directly contact. This layer of soil is usually screened and improved to ensure good air permeability, water retention and fertility, which is beneficial to the growth and development of plant roots.

[0032] As Figure 1 shown, a grid beam 7 is also cast and fixed on the surface of the above-water part 3 in this embodiment. A first gravel cushion layer 35, an ecological permeable concrete layer 34, a soil-based nutrient layer 33, a greening soil covering layer 32 and a slope greening layer 31 are sequentially laid in the grid beam 7. The grid beam 7 consists of vertical frames extending from the slope top to the slope bottom and horizontal frames extending horizontally along the lake surface. A number of grid beams 7 are first cast on the lakeside slope protection of the artificial lake, and then the first gravel cushion layer 35, the ecological permeable concrete layer 34, the soil-based nutrient layer 33, the greening soil covering layer 32 and the slope greening layer 31 are filled in each grid beam 7. As the skeleton structure of the slope protection, it can significantly improve the anti-slip ability and overall stability of the entire slope protection system.

[0033] Furthermore, the soil-based nutrient layer 33 in this embodiment is filled with natural soil, plant ash and long-acting compound fertilizer. The ratio of natural soil: plant ash: long-acting compound fertilizer is 1000:30:0.6. An appropriate amount of water is added and stirred evenly, and then it is pumped into the pores of the permeable concrete to ensure that the plant roots can penetrate the ecological concrete and plunge into the natural soil during the downward growth process, providing a basic growth medium for the plants.

[0034] Furthermore, a de-alkalization solution for de-alkalization is sprayed on the surface of the ecological permeable concrete in this embodiment. In order to ensure the good growth of plants, after the strength of the permeable concrete is stable, a de-alkalization solution is sprayed on the concrete surface by a motorized sprayer for de-alkalization treatment.

[0035] The above slope protection construction process is: As Figure 2As shown in the figure, first, it is necessary to carry out construction layout according to the engineering design, determine the construction baseline, and trim the slope according to the design slope ratio of 1:1.5 and the flatness requirement, remove the tree roots, stones and other sundries in the base soil to ensure the slope surface is flat. For the parts that need to be backfilled, the backfill soil should be compacted to a density of more than 90%. Next, pour multiple grid beams 7 with a size of 2.5m×2.5m on the base soil slope with ordinary concrete. Then, carefully select materials and evenly spread the gravel cushion layer inside the grid beam 7 as the transition layer between the lower base soil and the upper permeable concrete, which has important ecological functions such as rainwater filtration and infiltration, and at the same time also has the functions of dispersing the force of the upper structure and improving the durability of the permeable concrete. Subsequently, complete the pouring construction of the gabion foot fixing 5 and the inverted filter concrete below the water level. Then lay a layer of permeable concrete on the cushion layer. Determine the control line for the paving thickness of the cast-in-place permeable concrete to be 10 cm by snapping lines. The permeable concrete prepared on site needs to reach the construction site within 30 minutes after leaving the silo and be paved according to the snapped line height. In order to ensure the good growth of plants, after the strength of the permeable concrete is stable, use a motorized sprayer to spray the alkali-reducing solution on its surface for alkali reduction treatment. Subsequently, mix natural soil, plant ash and long-acting compound fertilizer in a ratio of 1000:30:0.6, add an appropriate amount of water and stir evenly, and pour it into the pores of the permeable concrete with a water pump to ensure that the plant roots can penetrate the ecological concrete and penetrate into the natural soil. Finally, lay a layer of greening soil cover and select grass seeds suitable for growing in the river basin and having good erosion resistance and flood tolerance, such as bermudagrass and tall fescue, for planting and do a good job in maintenance.

[0036] The above-described embodiments are only the preferred embodiments of the present invention and cannot be used to limit the protection scope of the present invention. Any non-substantive changes and modifications made by those skilled in the art on the basis of the present invention shall fall within the protection scope of the present invention.

Claims

1. An artificial lake ecological slope protection based on permeable concrete is provided between the bank top and the lake bottom, and is characterized in that, It includes an above-water part and a below-water part. The above-water part, from outside to inside, successively includes a slope greening layer for planting ecological green plants, a soil base nutrient layer for supplying nutrients to the green plants, an ecological permeable concrete layer for enhancing drainage performance and providing stable support, and a first gravel cushion layer laid on the base soil for dispersing the load of the upper structure. The below-water part, from inside to outside, successively includes a second gravel cushion layer and an inverse filtration ecological concrete layer for adsorbing pollutants and filtering water bodies.

2. The ecological slope protection of an artificial lake based on permeable concrete according to claim 1, characterized in that, A stone cage footing for enhancing the slope protection stability is arranged between the below-water part and the lake bottom.

3. The ecological slope protection of an artificial lake based on permeable concrete according to claim 1, wherein A concrete coping is arranged between the above-water part and the bank top.

4. The artificial lake ecological slope protection based on permeable concrete according to claim 1, characterized in that, A greening soil covering layer is also arranged between the soil base nutrient layer and the slope greening layer.

5. The artificial lake ecological slope protection based on permeable concrete according to claim 4, characterized in that, The surface of the above-water part is also cast and fixed with lattice beams. The lattice beams are successively paved with a first gravel cushion layer, an ecological permeable concrete layer, a soil base nutrient layer, a greening soil covering layer, and a slope greening layer.

6. The ecological slope protection of an artificial lake based on permeable concrete according to claim 1, characterized in that The soil base nutrient layer is filled with natural soil, plant ash, and long-acting compound fertilizer.

7. An artificial lake ecological slope protection based on permeable concrete according to claim 1, characterized in that, A de-alkalization solution for de-alkalization is sprayed on the surface of the ecological permeable concrete.

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