摘要
以汦河流域气候特征和降雨情况为研究对象,通过分析汦河流域各站建站以来至2021年的实测暴雨洪水资料,统计其次暴雨量和次洪量、洪峰流量、洪峰滞时等水文要素。采用线性趋势回归分析和Mann-Kendall非参数秩次相关检验法研究水文时间序列的变化趋势,以及有序聚类等方法来分析水文时间序列的突变,揭示了区域区暴雨洪水产生的机理及规律,推动了山丘区中小河流流域洪水预报模型的发展,为区域暴雨洪水灾害精准防控及风险应对提供有力技术支撑。
This paper takes the climate characteristics and rainfall status of Zhihe River Basin as the research objects,and analyzes the measured rainstorm and flood data of all stations in Zhihe River basin from the establishment of stations to 2021,and calculates the hydrological factors such as secondary rainstorm amount,sub-flood amount,peak discharge and peak duration.Linear trend regression analysis and Mann-Kendall non-parametric rank correlation test were used to study the change trend of hydrological time series,and ordered clustering methods were used to analyze the abrupt change of hydrological time series,which revealed the mechanism and law of regional rainstorm flood,and promoted the development of flood prediction models for small and medium-sized river basins in mountainous areas.To provide strong technical support for the precise prevention and control of regional rainstorm and flood disasters and risk response.
作者
刘庆华
LIU Qinghua(Hydrological Survey and Research Center of Xingtai City of Hebei Province,Xingtai 054000,China)
出处
《水科学与工程技术》
2023年第6期11-13,共3页
Water Sciences and Engineering Technology
基金
河北省2023年度水利科研与推广计划项目(2023-38)。
关键词
汦河流域
洪水特性
洪水预报
精准防控
Zhihe River basin
flood characteristics
flood forecast
precise prevention and control
