【摘要】 气候变化背景下,洪水灾害发生频率增加,在全球范围内造成了破坏性影响。以金华江流域为研究区,以燕尾洲公园生态护堤设计模式为典型,探究不同生态护堤模式替代水泥堤防产生的流域防洪效应。研究利用SWAT模型,模拟不同设计形式和面积比例的生态护堤,在金华江流域洪水过程的流量调控、洪峰削减与水位调节3个方面所产生的效应。研究发现,随着流域范围内更多的水泥堤防被生态护堤所取代,洪水过程线变得更为平缓,年最大一日洪峰削减率最高可达63%,燕尾洲公园生态护堤模式较水泥堤防有良好的洪水削减作用。燕尾洲公园水位调控效果表明,公园生态护堤能够成功抵御模拟年份内所有场次洪水,且能够有效避免河道的硬化和白化,具有较强的推广应用价值。更多还原

【Abstract】 Rapid urbanization has increased the frequency of flood disasters, causing devastating effects globally. This study selected the Jinhua River Basin as the study area and used the ecological embankment strategies of Yanweizhou Park as a typical model to explore the flood control effects of different ecological embankments. The SWAT(Soil & Water Assessment Tool) model was used to simulate flow regulation, peak flow reduction, and peak stage adjustment in the Jinhua River Basin under 129 embankment scenarios with different design forms and area ratios. The study found that as more concrete embankments were replaced by ecological embankments, the flow during the flow hydrography was smoother, with a maximum annual peak flow reduction rate of 63%. Yanweizhou ecological embankment strategies have better peak flow reduction effects than the concrete embankments. The Yanweizhou ecological embankment strategies can successfully resist all floods during the simulation year, and can effectively prevent the hardening and bleaching of the river, and thus have a strong application value.更多还原