水资源保护2024，Vol.40Issue(1)：86-92,7.DOI:10.3880/j.issn.1004-6933.2024.01.011
基于数值试验的降雨径流过程对不透水面空间分布的响应分析
Response analysis of rainfall runoff process to spatial distribution of impervious area based on numerical experiments
摘要
Abstract
In order to analyze the response of rainfall-runoff process to spatial distribution of impervious area,a hypothetical experiment area of 3 km×3 km was constructed,and 36 kinds of spatial distributions of impervious area with six impervious rates were set.Numerical experimental models were established to simulate the rainfall runoff process under six kinds of short-duration design rainfall with different return periods of 2,5,10,20,50,and 100 years.Based on the simulation results,the runoff processes under different rainfall conditions and spatial distributions of impervious area were analyzed.The results show that,under the same impervious rate,the difference of runoff coefficient under different spatial distributions of impervious area is generally small,and the spatial distribution of impervious area has a certain influence on the peak runoff and time to peak runoff.Under the same rainfall condition,the change in impervious rate is the dominant factor for the alternation of the runoff process,and there exists a linear relationship between the runoff coefficient and impervious rate.With the increasing of impervious rate,the runoff process line gradually changes from"low and fat"to"sharp and thin".关键词
不透水面/空间分布/不透水率/降雨径流/数值试验Key words
impervious area/spatial distribution/impervious rate/rainfall runoff/numerical experiment分类
建筑与水利引用本文复制引用
梅超,石虹远,李瑞栋,李玉龙,刘家宏,栾清华,王浩,王佳..基于数值试验的降雨径流过程对不透水面空间分布的响应分析[J].水资源保护,2024,40(1):86-92,7.基金项目
国家自然科学基金项目(52009139) （52009139）
国家重点研发计划项目(2021YFC30001404) （2021YFC30001404）
中国水利水电科学研究院基本科研业务费专项资金资助项目(WR110145B0012023,WR110145B0022022) （WR110145B0012023,WR110145B0022022）
水沙科学与水利水电工程国家重点实验室资助项目(61010101221) （61010101221）
