Multifunctional downward-sunken green land

Abstract

The invention belongs to the technical field of landscape greening, and particularly relates to multifunctional downward-sunken green land. The multifunctional downward-sunken green land comprises a planting soil pit of a cylinder structure, and permeable bricks I are piled on the circumferential side wall of the planting soil pit; a planting soil layer, a coarse sand layer I and a fine sand layerI are sequentially laid in the planting soil pit from top to bottom, and non-woven geotechnical cloths are arranged between the planting soil layer and the coarse sand layer I as well as between thecoarse sand layer I and the fine sand layer I correspondingly; the middle of the planting soil layer is downwards sunken to form a circular impounding reservoir, and aquatic plants are planted in thecircular impounding reservoir; a rainwater recovery system is arranged in the middle of the planting soil layer; and a rainwater utilization device is arranged in the rainwater recovery system for cleaning vehicles, and water resources for cleaning the vehicles flow back to the planting soil layer from the rainwater recovery system. Excess rainwater flows into the rainwater reuse system from the green land, the rainwater utilization device is arranged in the rainwater reuse system for cleaning the vehicles in a self-service mode, water storage and water purification functions are achieved, water utilization function diversity is further achieved, and the water for cleaning the vehicles flows back for irrigating the plants.

Description

technical field [0001] The invention belongs to the technical field of landscape greening, and in particular relates to a multifunctional sunken green space. Background technique [0002] In recent years, with the continuous advancement of urbanization in our country, the impermeable area has increased sharply. When the rainfall increases, the rainwater cannot be discharged in time, resulting in urban waterlogging disasters and seriously endangering the safety of people's property. At the same time, due to the widespread pollution of urban roads, The runoff generated by rainfall after washing the road surface, especially the initial rainwater contains a large amount of pollutants. If it is discharged into the river without treatment, it will cause water pollution, waste of rainwater resources, and aggravate the urban heat island effect. Sponge city is a new generation of urban stormwater management concept, which means that cities have good "elasticity" in adapting to enviro...

AI Technical Summary

Problems solved by technology

[0004] The existing sunken green land has defects such as low water storage capacity, infiltration efficiency, and water purification capacity; single plant species; single function; easy hardening of the surface; poor runoff purification effect; weak retention capacity for rainwater

ZL20753815U discloses a sunken green space. Although there is a rainwater device, the design of the spraying device is unreasonable, which will easily cause uneven spraying, waste rainwater resources, and the removal rate of nitrogen and phosphorus in the runoff is not high; the rainwater washes away the green space seriously.

Images