Ecological water permeable lawn for urban sponge body building

Abstract

An ecological water permeable lawn for an urban sponge body building is composed of a lawn body, a soil layer, a sand layer, a gravel layer, water storage balls and a water catchment pipeline. The lawn body is a lawn vegetation layer with the dip angle being 0.1-0.5% and plant height being 5-15 cm; the soil layer is composed of granular soil rich in organic matters and microorganisms and a soil additive, and the soil additive is grit or boiler slag, and the soil void ratio is adjusted to be 20% or above; the gravel layer is composed of fine sand and the water storage balls, and the water storage balls are evenly distributed in the sand layer; the gravel diameter of the gravel layer is 2-10 cm; the water catchment pipeline is located at the bottommost position of the ecological water permeable lawn, and the diameter of the pipeline is 5-25 cm. The ecological water permeable lawn has the advantages that the water permeable function, the water storage function and the water catchment function are achieved, and rainwater resources are recycled; the ecological water permeable lawn is short in building period, capable of being adopted in cities of different scales and different geological positions, urban ground softening pavement and environment beautifying are achieved, and economic benefits are remarkable.

Description

technical field [0001] The invention relates to the field of sponge city construction, in particular to an ecological permeable lawn used for urban sponge construction. Background technique [0002] In recent years, the crisis of water resources has deepened day by day, and the flood disasters in urban areas have caused huge losses to urban construction, residents' lives and property. An important issue reflected is that rainwater is not considered as a resource to alleviate the water crisis. Rainwater flows away in vain through the urban drainage system, but the design of urban drainage facilities and the urban drainage standard system are out of touch with reality. During heavy rains, serious water accumulation occurs, causing flood disasters, and rainwater entrains pollutants to flow across, causing water pollution and ecological environment problems. Rainwater ecological collection and resource treatment can alleviate the water resource crisis. Through the construction ...

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Problems solved by technology

Most cities in my country are facing water shortages, declining groundwater levels and flood disasters, which have not been effectively improved

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