洪水对汾河下游河床冲淤影响及河道演变分析  

Analysis of the Impact of Floods on the Erosion and Sedimentation of the Riverbed in the Lower Reaches of the Fenhe River and the Evolution of the Fenhe River Channel

作　　者：于洁[1] YU Jie

机构地区：[1]山西水利职业技术学院,山西太原030032

出　　处：《山西水利科技》2025年第1期66-69,共4页Shanxi Hydrotechnics

摘　　要：汾河是山西境内最大的河流,赵城水文站以下为长232 km、流域面积10795 km2的汾河下游河段。根据汾河泥沙与气象特征,结合历史洪水,对河道冲淤情况进行了分析。根据河道历史演变、河道近期演变情况,对河道演变与河床淤积趋势进行了分析。结果表明:汾河下游段河床逐年淤积,河床大幅度抬高;河道径流量明显减小,主槽萎缩严重,行洪能力不断下降,同流量水位迅速抬升。The Fenhe River is the largest river in Shanxi Province.The lower reaches of Fenhe River which located below Zhaocheng Hydrology Station,has a length of 232 km and a basin area of 10795 km2.Based on the sediment and meteorological characteristics of the Fenhe River,combined with historical floods,an analysis was conducted on the erosion and deposition of the river channel.Based on the historical evolution of the river and the recent evolution of the river,an analysis was conducted on the evolution of the river and the trend of riverbed sedimentation.The results show that the riverbed of the lower reaches of the Fenhe River is silting up year by year,and the riverbed is significantly elevated;the river runoff has significantly decreased;the main channel has shrunk severely;the flood discharge capacity has been continuously decreasing,and the water level at the same flow rate has rapidly risen.

关 键 词：汾河 泥沙与气象 历史洪水 河道冲淤 河道演变 

分 类 号：TV85[水利工程—水利水电工程]