Vegetation porous ecological concrete frame type slope protection

Abstract

The utility model provides a vegetation porous ecological concrete frame type slope protection. The vegetation porous ecological concrete frame type slope protection comprises side slope foundation soil, and a concrete coping, a concrete frame and a concrete foot which are arranged on the side slope foundation soil from top to bottom. A nutritional type composite non-woven fabric layer, a porous ecological concrete base layer and a mixed organic fertilizer cultivation soil layer are sequentially arranged in the concrete lattice from bottom to top; green plants are planted in the mixed organic fertilizer cultivation soil layer. According to the utility model, both safety and ecology are considered, the safety is ensured, the ecology of the two banks of the riverway can be improved, the balance of the ecological system of the riverway can be recovered, and the device is suitable for various riverways which need to be provided with protection slopes to increase the protection performance, and is particularly suitable for riverway slopes with the slope ratio of 1: 2.0-1: 3.0.

Description

Technical Field

[0001] The utility model relates to the technical fields of slope engineering, water conservancy engineering and the like, and in particular to a frame-type river bank slope protection structure. Background Art

[0002] In recent years, with the development of urbanization, river development and management have accelerated. Traditional river slope treatment measures, such as reinforced concrete slope protection, mortar-laid block stone slope protection, prefabricated block slope protection, etc., are mostly made of hard materials such as concrete and stone. Although they have improved the stability of the slope, large areas of rigid protection have blocked the material exchange between water and slope soil, damaged the river ecology, weakened the river's self-purification function, and destroyed the river's natural ecosystem.

[0003] With the rise of the concept of ecological river channels and the application of new technologies in materials such as ecological concrete, the demand for new ecological river bank protection that can replace traditional river bank protection, is suitable for plant growth, and takes into account both protection and ecology has further increased. Utility Model Content

[0004] The utility model aims at the problems existing in the traditional hard slope protection of river channels in the above-mentioned prior art, and provides a vegetated porous ecological concrete frame slope protection, which is convenient for block maintenance and repair, reduces maintenance costs, improves the ecology of both sides of the river channel, and restores the balance of the river channel ecosystem.

[0005] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0006] The vegetated porous ecological concrete frame type slope protection includes slope foundation soil, a concrete capping, a concrete frame and a concrete footing arranged from top to bottom on the slope foundation soil; a nutrient composite non-woven fabric layer, a porous ecological concrete base layer and a mixed organic fertilizer cultivation soil layer are arranged in sequence from bottom to top in the concrete frame; the mixed organic fertilizer cultivation soil layer can be planted with green plants.

[0007] Furthermore, the concrete anchor is arranged at the bottom of the slope or in the middle of the slope to meet the protection range of the slope protection.

[0008] Specifically, the dimensions of the concrete anchor are 500 mm in width and 600 mm in height.

[0009] Furthermore, the thickness of the concrete capping is 0.1m, and its top elevation is consistent with the elevation of the revetment top, and cast-in-place construction can be adopted.

[0010] Furthermore, the concrete grid is a plurality of polygonal structures.

[0011] Specifically, the concrete frame is a square.

[0012] Furthermore, the concrete frame has a size of 3m×3m, a wall thickness of 150mm, and a height of 230mm, and can be cast-in-place on the riverside slope using an ecological slope protection formwork.

[0013] Furthermore, the nutritional composite non-woven fabric layer is composed of four types of fibers a, b, c, and d interwoven together, wherein fiber a is a nitrogen-containing organic compound fiber, fiber b is a fiber containing a highly absorbent substance, fiber c is a mold-derived fiber that can decompose fiber a, and fiber d is a polypropylene synthetic fiber, which plays a role in dispersing and evenly distributing fibers a, b, and c.

[0014] Furthermore, the porous ecological concrete base layer is composed of cement, crushed stone or gravel aggregate, water reducing agent, fly ash, mineral powder and silica powder.

[0015] Furthermore, the mixed organic fertilizer farming soil layer contains farming soil and organic fertilizer.

[0016] Specifically, the thickness of the mixed organic fertilizer cultivated soil layer is 100 mm, and the thickness of the porous ecological concrete base layer is 100 mm.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model divides the slope protection unit into concrete frames as a whole, so as to facilitate block maintenance and repair and reduce maintenance costs. A nutrient composite non-woven fabric layer, a porous ecological concrete base layer, and a mixed organic fertilizer cultivation soil layer are arranged in the concrete frame from bottom to top, and green plants can be planted in the mixed organic fertilizer cultivation soil layer. The structural setting of the concrete frame has the following advantages: First, the nutrient composite non-woven fabric layer provided in the utility model is composed of a mixture of multiple fibers, which can slowly release nitrogen fertilizer, and at the same time has the functions of back filtration and providing nutrients for plant growth for a long time; second, the ecological performance of the porous ecological concrete base provided in the utility model is better than that of ordinary concrete, and the porosity is large, which can provide the space required for the growth and development of plant roots and the distribution and dispersion of soil and nutrients, which can increase the stability of plant roots and ensure the growth and development of plant roots and sufficient nutrition; third, the mixed organic fertilizer cultivation soil layer provided in the utility model is composed of a mixture of cultivation soil and organic fertilizer, and a certain amount of water retaining agent and sawdust can be added to the cultivation soil, which has the characteristics of water retention and absorption, slow release of fertilizer, uniform dispersion, etc.; fourth, green plants can be planted in the mixed organic fertilizer cultivation soil layer, which can further play a role in maintaining slope stability, conserving water and soil, and promoting the restoration of slope ecosystems. In short, traditional river management generally adopts large-area hard slope protection, which has the disadvantage that it blocks the exchange of water and soil materials, destroys the river ecosystem, and weakens the self-purification function of the river. Compared with the above traditional technologies, the utility model takes into account both safety and ecology. While ensuring safety, it can improve the ecology of both sides of the river and restore the balance of the river ecosystem. The utility model is suitable for various rivers that need to set up slope protection to increase protection, especially for river slopes with a slope ratio of 1:2.0 to 1:3.0. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a plan view of the vegetated porous ecological concrete frame slope protection in a specific implementation method;

[0020] Figure 2 It is a side view of the vegetated porous ecological concrete frame slope protection in a specific implementation method;

[0021] Figure 3 It is a plane cross-sectional view of a porous ecological concrete base layer in a single concrete frame in a specific implementation method;

[0022] Figure 4 It is a vertical cross-sectional view of a single concrete frame in a specific implementation manner;

[0023] As shown in the figure: porous ecological concrete base layer 1, concrete frame 2, nutrient composite non-woven fabric layer 3, mixed organic fertilizer cultivated soil layer 4, green plants 5, concrete footing 6, concrete top 7, slope foundation soil 8. DETAILED DESCRIPTION

[0024] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0025] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] See also Figure 1-4 A kind of vegetated porous ecological concrete frame type slope protection is designed. The slope ratio of the river slope is 1:2.0-1:3.0. After the river slope foundation soil 8 is compacted, cast-in-place concrete footing 6, concrete frame 2, and concrete capping 7 are arranged from bottom to top on the slope foundation soil 8.

[0027] The concrete footing 6 is set at the bottom of the slope within the protection range of the slope protection. The concrete footing 6 is constructed by C20 concrete cast-in-place, with a width of 500mm and a height of 600mm. The concrete capping 7 is constructed by C20 concrete cast-in-place, with a thickness of 0.1m, and the top elevation is consistent with the top elevation of the revetment.

[0028] Concrete frame 2 is a number of square structures, which are constructed by cast-in-place C20 concrete on the river slope using ecological slope protection templates, with dimensions of 3m×3m, wall thickness of 150mm and height of 230mm.

[0029] See also Figure 3 and Figure 4 , 300g / m 2 A nutrient composite non-woven fabric layer 3, a 100 mm thick porous ecological concrete base layer 1, a 100 mm thick mixed organic fertilizer cultivation soil layer 4, and green plants 5 planted on the mixed organic fertilizer cultivation soil layer 4.

[0030] The nutritional composite nonwoven fabric layer 3 is composed of four types of fibers, a, b, c, and d, interwoven together. a is nitrogen-containing organic compound fiber, b is fiber containing highly absorbent material, c is mold-derived fiber that can decompose fiber a, and d is polypropylene synthetic fiber.

[0031] Specifically, fiber a is nitrogen-containing organic compound fiber, and the amount is 100g / m 2 , can be hydrolyzed into amino acids and slowly ammonified under certain water conditions, continuously providing plants with absorbable nitrogen fertilizer. Fiber b is a fiber with high water absorption rate made from cellulose, with a dosage of 50g / m 2 , which can improve the hot and humid environment under the porous ecological concrete base 1 and inside its pores, which is conducive to the growth of plant roots. Fiber c is a plant fiber with a dosage of 10g / m 2 , containing β-1,4 glucoside bonds, plays a role in decomposing fiber a. Fiber d is a polypropylene synthetic fiber, with a dosage of 50g / m 2 , which plays the role of dispersing and evenly distributing fibers a, b, and c.

[0032] The porous ecological concrete base 1 is made of cement with a grade of ≥42.5, crushed stone or gravel aggregate with a particle size of 2 to 3 cm, 0.5% to 1.0% (mass) of water reducing agent, and fly ash, mineral powder, silica powder and other admixtures. It is cured for 7 to 14 days under standard curing conditions and the casting thickness is 100 mm. The performance parameter index is bulk density ≥1800 kg / m 3 , 28d compressive strength 6~15MPa, green coverage ≥95%, effective porosity 25%~30%, permeability ≥1.0cm / s, pH value 6~10.

[0033] The mixed organic fertilizer cultivation soil layer 4 is composed of cultivation soil and organic fertilizer. Specifically, the finished cultivation soil is purchased and mixed with organic fertilizer, and the laying thickness is 100mm. Generally, the following conditions must be met: ① The material is easy to fill, and the cultivation soil is fully ground to ensure that the particle size is as small as possible, so that it can be fully filled into the pores of porous ecological concrete; ② In order to have water retention and water absorption capacity, so as to prevent the water in the soil from being lost quickly through the pores of porous ecological concrete, a certain amount of water retention agent and sawdust can be added to the cultivation soil; ③ It has the ability to slowly release fertilizer; ④ It has good dispersibility, which is conducive to evenly dispersing the various components and nutrients in the pores of porous ecological concrete. Soil that has agglomerated after absorbing water is not suitable.

[0034] Green plant 5, the seed sowing density can be 20-25g / m 2 For the scheme, mix the plant seeds and the cultivated soil evenly and then lay them; if planting finished vegetation, choose plants that are easy to survive, have developed root systems, and have short leaves and stems, such as Bermuda grass and Pennisetum; if planting in water level fluctuation areas, aquatic plants such as shallot, calamus, and lily of the valley can be used.

[0035] The specific construction method of the vegetation porous ecological concrete frame protection of the utility model includes but is not limited to the following steps:

[0036] 1. Compact the slope foundation soil 8 according to the soil quality of the slope foundation soil and the river bank protection grade and the compaction degree required by the specification;

[0037] 2. Cast concrete frame 2, concrete footing 6, and concrete capping 7 on the slope in sequence;

[0038] 3. Laying the nutritional composite non-woven fabric 3;

[0039] 4. Set up a porous ecological concrete base 1 and maintain for 7 to 14 days;

[0040] 5. Backfill with mixed organic fertilizer and cultivated soil 4;

[0041] 6. Sowing plant seeds or planting finished vegetation to form green plants 5;

[0042] 7. Watering maintenance.

Claims

1. Vegetation porous ecological concrete frame type slope protection, characterized by: The invention comprises a slope foundation soil (8), a concrete capping (7) arranged from top to bottom on the slope foundation soil (8), a concrete frame (2) and a concrete footing (6); a nutrient composite non-woven fabric layer (3), a porous ecological concrete base layer (1) and a mixed organic fertilizer cultivation soil layer (4) are arranged in sequence from bottom to top in the concrete frame (2); the mixed organic fertilizer cultivation soil layer (4) can be planted with green plants (5).

2. The vegetation porous ecological concrete frame slope protection according to claim 1 is characterized in that: The concrete footing (6) is arranged at the bottom of the slope or in the middle of the slope.

3. The vegetation porous ecological concrete frame slope protection according to claim 1 is characterized in that: The dimensions of the concrete footing (6) are 500 mm in width and 600 mm in height.

4. The vegetation porous ecological concrete frame slope protection according to claim 1 is characterized in that: The thickness of the concrete top (7) is 0.1m, and its top elevation is consistent with the top elevation of the revetment.

5. The vegetation porous ecological concrete frame slope protection according to claim 1 is characterized in that: The concrete grid (2) is a plurality of polygonal structures.

6. The vegetation porous ecological concrete frame slope protection according to claim 1 is characterized in that: The concrete frame (2) is square.

7. The vegetation porous ecological concrete frame slope protection according to claim 1 is characterized in that: The concrete frame (2) has a size of 3m×3m, a wall thickness of 150mm and a height of 230mm.

8. The vegetation porous ecological concrete frame slope protection according to claim 1 is characterized in that: The nutritional composite non-woven fabric layer (3) is composed of four types of fibers, a, b, c and d, interwoven together, wherein a is nitrogen-containing organic compound fiber, b is fiber containing highly absorbent material, c is mold-derived fiber that can decompose fiber a, and d is polypropylene synthetic fiber.

9. The vegetation porous ecological concrete frame slope protection according to claim 1 is characterized in that: The mixed organic fertilizer cultivation soil layer (4) contains cultivation soil and organic fertilizer.

10. The vegetated porous ecological concrete frame slope protection according to claim 1 is characterized in that: The mixed organic fertilizer cultivated soil layer (4) has a thickness of 100 mm, and the porous ecological concrete base layer (1) has a thickness of 100 mm.

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