| HEC-HMS模型在四川省清溪河流域山洪预报中的应用 |
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| 引用本文： | 张浪,李俊,黄晓荣,潘荦,魏晓玥.HEC-HMS模型在四川省清溪河流域山洪预报中的应用[J].中国农村水利水电,2020(1):130-135. |
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| 作者姓名： | 张浪 李俊 黄晓荣 潘荦 魏晓玥 |
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| 作者单位： | 四川大学水利水电学院 |
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| 摘 要： | 山洪灾害往往给山区人民生命财产、自然环境等造成了极大的损害,降低山洪灾害的有效途径之一是实现基于降雨径流模型的实时预报预警系统。选取四川省山洪易发流域-清溪河流域为研究区,通过GIS技术,结合流域DEM、土壤及土地利用数据提取流域信息,构建HEC-HMS降雨-径流模型进行流域山洪预报。根据降雨径流形成过程,分别采用SCS-CN曲线法、SCS单位线法、指数退水法和马斯京根法进行计算产流、坡面汇流、基流和河道汇流四个部分。选取6场洪水进行模型参数的率定,4场洪水进行模型验证。模拟结果表明:Nash效率系数均值为0.792,相关系数均值为0.84,峰现时差均在3 h以内,合格率为90%,该模型对清溪河山洪预报具有较好适应性,可为四川省中小河流域山洪预报提供借鉴和参考。
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| 关 键 词： | 山洪预报 清溪河流域 HEC-HMS模型 |
Application of HEC-HMS Model for Mountain Flood Forecasting in Qingxi River Basin |
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| ZHANG Lang,LI Jun,HUANG Xiao-rong,PAN Luo,WEI Xiao-.Application of HEC-HMS Model for Mountain Flood Forecasting in Qingxi River Basin[J].China Rural Water and Hydropower,2020(1):130-135. |
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| Authors: | ZHANG Lang LI Jun HUANG Xiao-rong PAN Luo WEI Xiao- |
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| Institution: | (College of Water Resources and Hydrology,Sichuan University,Chengdu 610065,China) |
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| Abstract: | An effective way to mitigate flood risk lies in implementing a real-time forecast and warning system based on a rainfall-runoff model.This paper uses GIS technology,combined with DEM,soil and land-use data to extract watershed information,and constructs HEC-HMS rainfall-runoff model for mountain flood forecasting in Qingxi River Basin.According to the formation process of rainfall runoff,the SCS-CN curve,SCS unit hydrograph,exponential recession and the Muskingum method are used to calculate the runoff volume,direct runoff,base flow and flow routing respectively.It has selected six flood events for model calibration and four flood events for model verification.The results show that the average the Nash efficiency coefficients of the flood in the verification period is 0.792,the average correlation coefficient is 0.84,and the flood peak appearance time difference is within 3 hours and meets the forecast requirements,which indicates that the model is suitable for hydrological simulation of the Qingxi River Basin.It can provide reference for mountain flood forecasting in the middle and small river basins of Sichuan Province. |
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| Keywords: | mountain flood forecasting Qingxi River Basin HEC-HMS hydrological model |
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