| In recent years,extreme rainstorm events have occurred frequently.the traditional approach to "fast rainwater drainage" not only increased the burden of municipal rainwater pipe drainage system,increase the probability of occurrence of airport waterlogging disaster;also brought a series of environmental problems of water runoff pollution,waste of water resources,water ecosystem deterioration,serious influence the operation of the airport safety and flight safety.Therefore,how to vigorously promote the country with low impact development as the core concept of "sponge city" construction under the background of new sustainable stormwater management concept into the airport drainage and landscape design,construction of ecological sponge airport,alleviating serious waterlogging runoff pollution,water resource waste has become a the new research topic.Firstly,this paper analyzes the severe rain and flood problems faced by China's airports and its causes,summarizes the current situation of typical airport rainwater management and utilization at home and abroad,and points out the main problems of rainwater management in China.Secondly,through the relevant literature review and induction,the paper studies the theory of advanced sustainable rainwater management and the theory of sponge city construction in China.This paper focuses on the construction of the sustainable rainwater management system of the airport: the definition of the rainwater system of the sponge airport and the sponge airport,the characteristics of the traditional airport rainwater management and the sponge airport rainwater management,and according to the natural hydrological process of rainwater runoff in the field area,The sponge airport rainwater system is divided into four sub-systems: infiltration retention system,intermediate transit system,filtration and purification system and collection and storage system,and the sub-system design approach,technical facilities and functions and other major content to explain;And then set up a set of green technology facilities and their combination for airport rainwater treatment,"low input and high output" and the technical framework of multi-objective and multi-level sponge airport rainwater system,combined with the characteristics of the airport's functional zoning and water quality characteristics And further define the target of rainwater management of sponge airport and establish the evaluation index system of sponge airport rainwater system from five aspects: water ecology,water environment,water security,water resources and water system.Finally,the case study of the new airport in Beijing is carried out,and the construction and implementation path of the sustainable rainwater management system of Beijing New Airport is planned based on the theoretical and technical framework proposed by the paper.It is hoped that this paper can provide some theoretical support and reference value for the construction of "sponge airport" with natural accumulation,natural infiltration and natural purification function. |
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