Integrated green belt system based on flood drainage and water conservation and flood drainage and water conservation method
An integrated technology for green belts, applied in soil drainage, botanical equipment and methods, roads, etc., can solve problems affecting roadbed safety, green belt water and soil loss, poor water retention performance, etc., and achieve the effect of increasing the green area
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Embodiment 1
[0019] An integrated green belt system based on drainage and water retention, comprising: a planting soil layer 5 planted with plants 1 with a thickness of 100 to 200 mm, a drainage and water retention system 2 is provided under the planting soil layer 5, and a drainage and water retention system 2 There is an impermeable material layer 9 below, the planting soil layer 5 is in the shape of a concave arc, and the filter drainage and water retention system 2 is composed of a sand permeable layer 6 in a concave shape (fine sand with a particle size of 0.075mm to 0.5mm and medium sand in a ratio of 3:1), a concave gravel material permeable layer 7 (composed of coarse sand and fine gravel with a particle size of 0.5 mm to 5 mm in a ratio of 1:1), and a concave gravel permeable layer Layer 8 (consisting of medium gravel, coarse gravel and gravel with a particle size of 5 mm to 100 mm in a ratio of 1:1:1) is superimposed. The upper surface of the sand permeable layer 6 is bonded to th...
Embodiment 2
[0022]A method for drainage and water retention of an integrated green belt system. A ditch is dug at the green belt to be built, and an impermeable material layer 9 in the shape of an upward convex arc is placed at the bottom of the ditch, and at the highest point of the impermeable material layer 9 Drainage holes 10 are provided, and the drainage holes 10 are covered with a permeable filter screen 11, and the drainage holes 10 are connected to the municipal drainage pipe network; on the impermeable material layer 10, a gravel permeable layer 8 in the shape of an upward convex arc is sequentially laid , the gravel material permeable layer 7 in the concave shape, the sand grain permeable layer 6 in the concave shape and the planting soil layer 5 in the concave circular arc shape, in the gravel permeable layer 8, the gravel material permeable layer 7 and the sand permeable layer 6 The gravity holding channel array 3 is arranged inside, and one end of a row of gravity holding cha...
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