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

Kun Ding,Yi Zhang,Chen Yang,Yang Xu,T.Y Fang,V Khaletski

doi:10.1051/e3sconf/201913603021

Abstract

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

Highlights

In recent years, 1 with the accelerating process of urbanization in China, the drawbacks of the traditional urban development model have been constantly manifested, and internal disasters have occurred frequently
The main reason is that the implementation of relevant national policies and regulations is not in place; the construction standards of the county drainage project are relatively low, the drainage facilities and equipment are aging, and the pipe network is mixed, misconnected and damaged; the maintenance and management of the inland river and the ditch ponds are weak, the encroachment and siltation are serious, and the storage capacity is reduced; hardened ground; rainwater collection and utilization rate is low
For the sustainable development of the county, it is necessary and urgent to build a sponge city according to the low-impact development concept

Summary

Introduction

1 with the accelerating process of urbanization in China, the drawbacks of the traditional urban development model have been constantly manifested, and internal disasters have occurred frequently. For the sustainable development of the county, it is necessary and urgent to build a sponge city according to the low-impact development concept. The annual maximum rainfall is 1534.1mm, and the maximum daily rainfall is 109mm. According to the nature of the underlying surface of the county, it is divided into five categories: residential land, public and commercial service land, industrial and logistics storage land, green space and road and square land. The essence of low-impact development is to achieve the common development of environmental protection and urbanization. The foundation of the construction of “sponge city” is to achieve sustainable development [3]. In combination with the actual situation of Shouxian, it is advisable to adopt some low-impact development models such as planting grass ditch, recessed green space, rain garden, and penetrating the ground

Plant grass ditch

Rain garden

Hardened road reconstruction

Findings

Conclusion