A percolation type directional drainage ecological ditch

Abstract

The present invention discloses an infiltration type directional drainage drainage ecological ditch, comprising a gravel drainage layer, a fine sand filtration layer, a permeable nutrient planting soil layer, an organic covering layer, plants and ground cover slopes, wherein the gravel drainage layer, the fine sand filtration layer, the permeable nutrient planting soil layer and the organic covering layer are arranged adjacent to each other from bottom to top, plants are planted on the surface layer of the infiltration type directional drainage drainage ecological ditch, ground cover slopes are arranged on both sides of the surface layer of the organic covering layer, and the ground cover slopes are connected to the organic covering layer and the surrounding site. Through the above-mentioned manner, the infiltration type directional drainage drainage ecological ditch of the present invention, the runoff rainwater generated on the ground during the rainy season can enter the sponge city treatment facility after being directed and drained through the ecological ditch, which can reduce surface overflow, and the ditch can purify, store and infiltrate rainwater along the way, and the plants growing in the ditch have the function of softening and beautifying the site.

Description

Technical Field

[0001] The present invention relates to the technical field of sponge cities, and in particular to an infiltration-type directional drainage ecological ditch. Background Art

[0002] With the continuous advancement of urbanization, most urban roads and squares are paved with hard surfaces. In rainy seasons, it is very easy to cause water accumulation and overflow. At present, most of the rainwater runoff from roads or squares is directly discharged through the municipal rainwater system, but it is not conducive to the control of the runoff volume of sponge cities. Sponge city facilities need to collect water, and a ditch system with directional drainage function needs to be built to effectively connect the sponge city facilities in series to maximize their effectiveness. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide an infiltration type directional drainage ecological ditch, which is arranged on the side of impermeable places such as garden paths and squares for application.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide an infiltration type directional drainage ecological ditch, including a gravel drainage layer, a fine sand filtration layer, a permeable nutrient planting soil layer, an organic covering layer, plants and ground cover slopes, the gravel drainage layer, the fine sand filtration layer, the permeable nutrient planting soil layer, and the organic covering layer are arranged adjacent to each other from bottom to top, plants are planted on the surface of the infiltration type directional drainage ecological ditch, ground cover slopes are arranged on both sides of the surface of the organic covering layer, and the ground cover slopes are connected to the organic covering layer and the surrounding site.

[0005] In a preferred embodiment of the present invention, the infiltration type directional drainage ecological ditch also includes a permeable geotextile or non-woven fabric, and the permeable geotextile or non-woven fabric is arranged on the upper part of the gravel drainage layer.

[0006] In a preferred embodiment of the present invention, the thickness of the gravel drainage layer is 220-270 mm, and the particle size of the gravel in the gravel drainage layer is 20-30 mm.

[0007] In a preferred embodiment of the present invention, the thickness of the fine sand filter layer is 40-60 mm, and the particle size of the fine sand in the fine sand filter layer is 0.1-4 mm.

[0008] In a preferred embodiment of the present invention, the thickness of the permeable nutrient planting soil layer is 250-350mm, and the planting soil in the permeable nutrient planting soil layer satisfies the requirements of organic matter content ≥40%, water content ≤3%, and water permeability ≥100mm / h.

[0009] In a preferred embodiment of the present invention, the thickness of the organic covering layer is 40-60 mm.

[0010] In a preferred embodiment of the present invention, the cross-section of the infiltration-type directional drainage ecological ditch is an inverted trapezoidal configuration, and the longitudinal slope of the infiltration-type directional drainage ecological ditch is not less than 1%.

[0011] In a preferred embodiment of the present invention, the plant is a drought-resistant and moisture-resistant plant, and the plant is planted in the ground or in a pot.

[0012] In a preferred embodiment of the present invention, the plant species are one or more of Zinnia grandiflora, Buddleija truncatula, Iris pumila, and Iris truncatula.

[0013] In a preferred embodiment of the present invention, the slope of the ground cover slope is less than 1:3.

[0014] The beneficial effects of the present invention are as follows: the infiltration-type directional drainage ecological ditch of the present invention can direct the runoff rainwater generated on the ground during the rainy season through the ecological ditch and then enter the sponge city treatment facility, which can reduce surface overflow. The ditch can purify, store and infiltrate rainwater along the way, and the plants grown in the ditch have the function of softening and beautifying the site. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0016] Figure 1 It is a structural schematic diagram of a preferred embodiment of the infiltration type directional drainage ecological ditch of the present invention. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1, providing an infiltration type directional drainage ecological ditch, including a gravel drainage layer 7, a permeable geotextile 6, a fine sand filter layer 5, a permeable nutrient planting soil layer 4, an organic covering layer 3, plants 1 and a ground cover slope 2. The gravel drainage layer, the fine sand filter layer, the permeable nutrient planting soil layer, and the organic covering layer are arranged adjacent to each other from bottom to top. The permeable geotextile is arranged on the upper part of the gravel drainage layer, that is, between the gravel drainage layer and the fine sand filter layer. Laying a permeable geotextile or non-woven fabric on the gravel drainage layer can play a filtering role to reduce the infiltration of fine particles of soil into the lower space with the water flow.

[0019] Plants are planted on the surface of the infiltration-type directional drainage ecological ditch, and the plants selected are drought-resistant and moisture-resistant plants. The plants are planted in the ground or potted, and the ground planting method is adopted in this embodiment. The preferred varieties of the plants are one or more of the following: lily, buddleja, yellow calamus, and iris. Ground cover slopes are arranged on both sides of the surface of the organic covering layer, and the ground cover slopes are connected to the organic covering layer and the surrounding site. The ground cover slopes facilitate the convergence of rainwater from the surrounding sites.

[0020] The thickness of the gravel drainage layer is 250mm, and the middle is filled with gravel, and the particle size of the gravel is 25mm. The thickness of the fine sand filtration layer is 50mm, and the middle is filled with fine sand, and the particle size of the fine sand is 2mm, and the filtration rate is more than 50%. The thickness of the permeable nutrient planting soil layer is 300mm, and the planting soil in the permeable nutrient planting soil layer should meet the requirements of organic matter content ≥40%, water content ≤3%, and water permeability ≥100mm / h. The thickness of the organic covering layer is 50mm.

[0021] The planted plants can appropriately slow down the flow rate of water in the ditch, create a good growth environment for root zone microorganisms, and increase the water purification function along the ditch. The infiltration-type directional drainage ecological ditch is arranged along the edge of the garden path and the square, and its cross section is an inverted trapezoidal setting. The longitudinal slope of the cross section of the infiltration-type directional drainage ecological ditch is not less than 1%. The slope of the ground cover slope is less than 1:3.

[0022] The bottom layer of the infiltration-type directional drainage ecological ditch is not treated with anti-seepage treatment, and the original soil needs to be compacted to ensure the stability of the ditch structure itself, while allowing natural infiltration. The infiltration-type directional drainage ecological ditch can purify, store and infiltrate rainwater along the way, and it also has the function of softening and beautifying the site.

[0023] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A percolation type directional drainage ecological ditch, characterized in that: It includes a gravel drainage layer, a fine sand filtration layer, a permeable nutrient planting soil layer, an organic covering layer, plants and ground cover slopes. The gravel drainage layer, the fine sand filtration layer, the permeable nutrient planting soil layer and the organic covering layer are arranged adjacent to each other from bottom to top. Plants are planted on the surface of the permeable directional drainage ecological ditch. Ground cover slopes are arranged on both sides of the surface of the organic covering layer. The ground cover slopes are connected to the organic covering layer and the surrounding site. The thickness of the fine sand filter layer is 40-60 mm, the particle size of the fine sand in the fine sand filter layer is 0.1-4 mm, the cross-section of the infiltration type directional drainage ecological ditch is an inverted trapezoidal setting, the longitudinal slope of the infiltration type directional drainage ecological ditch is not less than 1%, and the slope of the ground cover slope is less than 1:

3.

2. The infiltration type directional drainage ecological ditch according to claim 1 is characterized in that: The infiltration type directional drainage ecological ditch also includes a permeable geotextile or non-woven fabric, and the permeable geotextile or non-woven fabric is arranged on the upper part of the gravel drainage layer.

3. The infiltration type directional drainage ecological ditch according to claim 1 is characterized in that: The thickness of the gravel drainage layer is 220-270 mm, and the particle size of the gravel in the gravel drainage layer is 20-30 mm.

4. The infiltration type directional drainage ecological ditch according to claim 1 is characterized in that: The thickness of the permeable nutrient planting soil layer is 250-350mm, and the planting soil in the permeable nutrient planting soil layer meets the requirements of organic matter content ≥40%, water content ≤3%, and water permeability ≥100mm / h.

5. The infiltration type directional drainage ecological ditch according to claim 1 is characterized in that: The thickness of the organic covering layer is 40-60 mm.

6. The infiltration type directional drainage ecological ditch according to claim 1 is characterized in that: The plants are drought-resistant and moisture-resistant plants, and are planted in the ground or in pots.

7. The infiltration type directional drainage ecological ditch according to claim 6 is characterized in that: The plant species are one or more of lily of the valley, buddleja, yellow iris and iris.

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