Application of low impact development concept in the construction of Shouxian County

摘要

Low Impact Development (LID), also known as low impact design or low impact urban design and development, is a rainwater management method based on the principle of simulating natural hydrological conditions, using source control concepts to achieve stormwater control and utilization. Through the analysis of the current topography, meteorology, rainfall, and urban underlying surface of Shouxian County, the author finds out the cause of the county, and proposes to appropriately improve the design standards in the construction of municipal drainage facilities, and learn from the successful experience of sponge city construction in developed countries. The six-character policy of seepage, stagnation, storage, net, use and platoon is implemented in the engineering practice of the county-level recessed green space, rain garden, grass-growing ditch, infiltration pavement and water system remediation. Through several years of implementation, the phenomenon of sea watching in the county has disappeared, the water saving effect is obvious, the greening of the urban landscape has been greatly improved, and the social, economic and environmental benefits have been significantly improved