Multifunctional rainwater storage and drainage garden system

Abstract

The invention discloses a multifunctional rainwater storage and drainage garden system, which comprises: a foundation pit, a landscape reservoir and an irrigation reservoir, and a waterproof substrate layer, a coarse gravel substrate layer, a potassium long A stone matrix layer, a quartz sand matrix layer, a mixed matrix layer and a cover layer, the potassium feldspar matrix layer is laid on the coarse gravel matrix layer in a wave shape in the thickness direction, and the quartz sand matrix layer is laid on the coarse gravel matrix layer in the thickness direction It is laid on the potassium feldspar matrix layer in a wave shape, and the filler of the mixed matrix layer is a combination of planting soil and expansive soil. The rain garden system of the present invention has an efficient rainwater filtering effect, can quickly and effectively purify, filter and store rainwater for use when rainwater is insufficient, has multi-functional storage and drainage features, and realizes ecologically sustainable rainwater control Use with rainwater.

Description

Technical field [0001] The invention relates to the field of rainwater garden systems for collecting and processing rainwater in urban road landscapes, in particular to a multifunctional rainwater garden system for storage and drainage. Background technique [0002] Rainwater is an important link in the urban water cycle system, and it plays an extremely critical role in regulating and replenishing regional water resources and improving the ecological environment. In the rapid promotion of the urbanization process, the urban form has undergone tremendous changes due to the transformation of land use and the substitution of the hardened surface for the natural surface. Urban rainwater problems have become more prominent, and urban non-point source pollution caused by storm runoff has become Aroused great attention from the international community. The rain garden came into being as a municipal landscape technology to deal with rainwater runoff. Rainwater garden is an effective n...

AI Technical Summary

Problems solved by technology

[0003] At present, the drainage of roads in cities is realized through drainage wells and drainage ditches set up on the roads. However, when the rainfall is large, the drainage is not so timely due to the limitation of drainage, which will cause water accumulation on the road surface and affect the road surface. There are many green belts made of curbstones on the road. Lawns or other plants are planted in the green belts to afforest, clean the air and collect rainwater. There is no way to help discharge and eliminate accumulated water on the road; rain gardens are also applied to urban road landscapes to absorb and eliminate accumulated water on the ground, effectively purify and filter rainwater, and achieve ecologically sustainable rainwater. Flood Control and Stormwater Utilization while Beautifying the City

[0004] However, for many rainy areas, due to the large amount of rainfall and the large amount of organic pollutants contained in the rainwater runoff, the runoff velocity is relatively large, and the scouring effect is obvious.

When a large amount of rainwater runoff enters the rain garden, the filtration capacity of the rain garden is limited, resulting in a decrease in flow velocity, an increase in water flow resistance, and sedimentation and retention in the rain garden. Over time, it will lead to a decrease in the water purification and absorption capacity of the rain garden, which is not conducive to rainwater Timely elimination and effective use of

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