ABSTRACT

The development of urbanization results in a marked increase in impervious areas, destroying the natural geological features and hydrological properties of the urban developed area. This may cause high risk of flooding, runoff pollution, and water shortages. An integral method is proposed to realize the multi-goals management of stormwater runoff, which called sponge city construction, and taken a pilot area of sponge city construction as an example to evaluate the effect of sponge city construction on stormwater quantity control via InfoWorks Integrated Catchment Model (ICM) model. The results showed that the annual total rainfall volume capture ratio is 77.4%, the drainage pipeline capacity was improved and flooding risk was decreased effectively. The high-risk flooding area was reduced about 44.76% of 50-year return period rainfall event with rainfall duration of 24 h. So, sponge city construction provides a novel method for the stormwater integral management.

抽象的

城市化的发展导致不透水地区明显增加，破坏了城市发达地区的自然地质特征和水文特性。这可能导致洪水泛滥，径流污染和水资源短缺的高风险。提出了一种综合的方法来实现雨水径流的多目标管理，称为海绵城市建设，并以海绵城市建设试验区为例，通过InfoWorks集成汇水系统评估了海绵城市建设对雨水量控制的效果。模型（ICM）模型。结果表明，年总降水量捕获率为77.4％，提高了排水管道容量，有效降低了洪水风险。高风险洪水区减少了约44个。50年回归期降雨事件中有76％的降雨持续时间为24小时。因此，海绵城市建设为雨水综合管理提供了一种新的方法。