Multi-layer graded purification adjustable storage concave type greenbelt and construction method thereof

Abstract

The invention discloses a multi-layer graded purification adjustable storage concave type greenbelt and a construction method thereof, belongs to the field of garden construction. The multi-layer graded purification adjustable storage concave type greenbelt has the following beneficial effects that when the water level of an upstream reservoir rises to be higher than the bending position of a siphon, water overflows to a downstream reservoir from the siphon, negative pressure is formed in the siphon in the process, the water level of the downstream reservoir is lowered to be higher than the bending position of the siphon, rainwater in the upstream reservoir can be continuously sucked to the downstream through the siphon, the adjacent upstream reservoir can be quickly and automatically emptied due to the fact that the end, located in the upstream reservoir, of the siphon extends to the bottom of the reservoir, so that the good water storage capacity can be kept, and then the ground is kept dry. The siphon is used for automatic adjustment, and compared with existing modes of using a drainage pump, sensor electric control and the like, the stability is higher, and the cost is lower.

Description

technical field [0001] The invention relates to the field of garden construction, in particular to a construction method for multi-layer graded and purified adjustable-storage recessed green spaces. Background technique [0002] The sunken green space refers to a public green space whose elevation is lower than the surrounding road surface, also known as low-lying green space. Contrary to the "flower bed", its idea is to use the open space to receive and store rainwater to reduce runoff discharge. Generally speaking, low-lying green spaces have certain requirements for the depth of the depression, and most of the soil quality has not been improved. Compared with the "line" of the shallow ditch of vegetation, the main reason is that the "surface" can receive more rainwater, and the internal plants are mostly native herbs. [0003] In areas with high rainfall throughout the year, it is often manifested in two aspects: the inability to infiltrate all the rainwater quickly and ...

AI Technical Summary

Problems solved by technology

[0003] In areas with high rainfall all year round, it is often manifested in two aspects: the inability to infiltrate all the rainwater quickly and the inability to store excess rainwater, resulting in rainwater overflow, which can neither effectively reuse rainwater nor affect pedestrian traffic, and a large amount of excess rainwater The soaking of rainwater will also destroy the ecology of the sunken green space

In addition, the current concave green spaces on both sides of the downhill often cause water to flow to the low-lying terrain at the bottom of the slope due to untimely water seepage, and it is easy to form water accumulation at the bottom of the slope.

[0004] In view of the related technologies mentioned above, the inventor believes that there are the following defects: most of the current sidewalks and sunken green spaces on both sides of the driveway have limited water storage and drainage capacity. When the rainfall increases sharply, water seepage and drainage are often not timely. It causes rainwater to overflow or flow to the low-lying terrain at the bottom of the slope, and it takes a long time for the rainwater to infiltrate after the rain stops. This process often leads to rotten roots of vegetation, so there is room for improvement

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