冰塞水位分析

高纬度地区河流冬季常形成冰塞,冰塞堵塞过流断面,使湿周增加,致上游水位升高,常因此产生凌洪灾害,冰塞的解体、溃决又常使下游产生灾害。冰期水位是冰塞演变和发展的重要结果之一,对于防灾减灾具有重要的参考价值。依据实验室资料和黄河河曲段的实测资料,针对直道和弯槽,对比分析了不同冰流量、不同初始水深和流速时模拟冰塞和天然河道冰期水位的变化规律。

Analysis of stages under ice-covered in winter

Each winter, ice jam may form on rivers in cold regions, causing many problems with its effects on the increasingly wet perimeter and blocking cross. Ice formation has the potential for causing the stage in the river to rise and suddenly catastrophic flooding. Break ice jams often occur suddenly and induce severe flooding with little warning. It is important to mitigate the stages due to the evolution of ice jam. This paper provides analyses and discussion of ice jam stages with variation in ice discharge and initial flow depth and velocity in straight and curved channels based on the data from the experiment and the field observations at the Hequ gauge station of the Yellow River.