The international name is "low-impact rainwater system construction", which absorbs water, stores water, seeps water and purifies water when it rains, and releases the stored water when necessary to realize the free migration of urban rainwater.
The key to the planning, design and construction of sponge city is to master and apply the mechanism and law of urban water cycle, scientifically distribute the flux and process of "infiltration", "stagnation", "storage", "purification", "utilization" and "drainage", and formulate engineering and non-engineering measures to achieve various engineering objectives, including infiltration surface layout, stagnant flow construction and rainwater utilization engineering planning.
Extended data
Need the following three aspects of water conservancy science and technology support:
1. At the basic theoretical level, it is necessary to understand the runoff generation and confluence mechanism of the underlying surface of complex cities.
2. The key technical level needs to establish a distributed urban hydrological model.
3. In practice, it is necessary to quantitatively evaluate the objective effects of "infiltration", "stagnation", "storage", "net", "use" and "discharge" under different planning scenarios. "
The above three aspects are not only the core content of urban hydrology research, but also the scientific basis of sponge city construction.
Baidu encyclopedia-sponge city
People's Network-What is a Sponge City?