基于3种降水产流方案的洪水过程模拟研究——以西南地区孙水河流域为例
Simulation on flood processes based on three rainfall runoff schemes:A case study of Sunshui River Basin in Southwest China
吕小余 1李占玲 1李昕潼 1叶瀛韬1
作者信息
- 1. 中国地质大学[北京]水资源与环境学院,北京 100083;中国地质大学[北京]水利部地下水保护重点实验室[筹],北京 100083
- 折叠
摘要
精确模拟洪峰流量和洪水过程线对防洪减灾分析至关重要,其中涉及的降雨损失和产汇流计算往往对洪水过程的模拟最为关键.为评估不同降雨损失模型和产流模型在我国西南地区孙水河流域的适用性,设计了 3套降雨产流方案.方案1:SCS曲线数法+Sndyer单位线法;方案2:初始常速率法+Clark单位线法;方案3:Green-Ampt法+SCS单位线法,使用HEC-HMS模型对我国西南地区孙水河流域2007-2018年15场洪水过程进行模拟和分析.结果表明,方案1、方案2对研究区洪水过程线的模拟效果最优,其中方案1对单峰洪水过程的模拟效果更好,方案2对复峰洪水过程的模拟效果更好;方案3模拟效果偏差.论文结果可为相似地区的洪水模拟、预报预警提供参考.
Abstract
Accurate simulation of floodpeak and its hydrograph is crucial for flood control and disaster reduc-tion analysis.The selection of rainfall loss and runoff generation model is often critical for flood process simula-tion.To evaluate the applicability of different rainfall loss and runoff generation models in the Sunshui River Basin in Southwest China,this study constructed three rainfall-runoff modeling schemes(scheme 1:SCS Curve Number method+Snyder Unit Hydrograph method,scheme 2:Initial Constant Rate method+Clark U-nit Hydrograph method,scheme 3:Green-Ampt method+SCS Unit Hydrograph method).The HEC-HMS model was used to simulate 15 flood events from 2007 to 2018.The results showed that Schemes 1 and 2 dem-onstrated satisfactory performance in simulating the flood hydrographs in the study area,with Scheme 1 per-forming better for single-peak flood events and Scheme 2 performing better for double-peak flood events.In comparison,Scheme 3 exhibited inadequate simulation performance.The findings of this study can provide reference for flood simulation and prediction in similar areas.
关键词
HEC-HMS/孙水河/降雨损失/产汇流模型Key words
HEC-HMS/Sunshui River Basin/rainfall loss model/runoff generation model引用本文复制引用
基金项目
国家自然科学基金面上项目(42171047)
出版年
2024
NETL
NSTL
万方数据