The change of rainfall process characteristics is one of the important factors causing urban waterlogging.Using multi-scenario rainfall simulation,this paper conducts a redundancy analysis(RDA)with rainfall recurrence period,rainfall duration and rainfall peak coefficient as variables to comprehensively explore the influence of each rainfall factor on the overflow of storm water drainage system.The results show that the nodal overflow and outlet runoff are most affected by the rainfall recurrence period.The change of recurrence period,duration and rainfall peak coefficient has signifi-cant influence on nodal overflow,and the degree of influence in descending order is as follows:recur-rence period,duration and rainfall peak coefficient.K-means clustering is used to comprehensively an-alyze multiple indicators of nodal overflow,and forecast the overflow risk of storm water drainage system under future rainfall conditions.
关键词
降雨过程特征/多情景模拟/冗余分析(RDA)/综合分析
Key words
rainfall process characteristics/multi-scenario simulation/redundancy analysis(RDA)/comprehensive analysis
维普
万方数据