牡丹江区域中小河流水文站洪水相关影响因素分析

Analysis of Flood Related Influencing Factors of Hydrological Stations on Medium and Small Rivers in Mudanjiang Region

针对中小河流水文水位站建站时间短,资料系列短、水位流量关系不稳定等现状,目前中小河流洪水预报方法为分布式水文模型和预报系统。牡丹江区域范围内洪水主要为上游洪水造成,属于山区性河流,具有涨落快、流速大、洪峰停留时间短的洪水特性,峰形尖瘦、洪峰持续时间多约为20min。文章以铁岭河镇水文站为例,对洪水相关影响因素进行简要分析。

In view of the short construction time of hydrologic water level stations in medium and small rivers,the data series are short and the relationship between water level and discharge is unstable,at present,the flood prediction methods for small and medium-sized rivers are mainly distributed hydrological model and prediction system.Floods within the Mudanjiang region are mainly caused from upstream floods,belonging to mountainous rivers with flood characteristics of fast fluctuation,rapid flow velocity and short residence time of flood peak,the peak shape is thin and duration time of flood peak are mostly about 20 minutes.Taking the hydrological station of Tieling River Town as an example,this paper analyzes the influencing factors of brief flood briefly.