海勃湾水库的防凌作用及对凌情的影响  

Ice-Flood Prevention Effect on Haibowan Reservoir and Its Impact on Ice Conditions

作　　者：陈冬伶[1] 梁聪聪[1] 赵淑饶[1] CHEN Dongling;LIANG Congcong;ZHAO Shurao(Hydrology Bureau of Yellow River Conservancy Commission,Zhengzhou 450004,China)

机构地区：[1]黄河水利委员会水文局,河南郑州450004

出　　处：《水文》2020年第4期85-90,共6页Journal of China Hydrology

基　　金：黄河水利委员会大江大河水文监测系统建设工程(一期)—黄河内蒙古河段冰凌预报模型建设项目(HSXX-2019-02)。

摘　　要：分析了海勃湾水库运用对黄河内蒙古河段的防凌作用及对凌情的影响。结果表明:海勃湾水库的运用使内蒙古河段流量适时调节能力增强,封河流量控制得更加精准,开河关键期进一步控制下泄流量,减少"武开河"风险;出库水温提高,海勃湾-巴彦高勒河段成为不稳定封冻河段,冰量减少,凌情减轻。受出库水温影响,内蒙古河段流凌和封河条件改变,同等动力及河道条件下,流凌封河要求的累积负气温更低,降温强度更强。分析成果可以为该河段冰情预报和黄河防凌决策提供参考。The effect of Haibowan reservoir operation on ice-flood prevention and ice condition in Inner Mongolia reach of the Yellow River was analyzed.The results show that the operation of the Haibowan reservoir enhances the ability of timely regulation of the flow in Inner Mongolia,and the control of the freeze-up discharge is more precise.The flow is further controlled during the ice breakup period to reduce the risk of mechanical breakup.With the increase of the outflow water temperature,the Haibowan-Bayangaole reach becomes an unstable frozen river section with less ice and less ice disaster.Influenced by the water temperature of outflow reservoir,the conditions of the formation of ice runs and freeze-up in Inner Mongolia reach have changed.Under the same dynamic and river channel conditions,the accumulated negative temperature required during the formation of ice runs and freeze-up is lower and the cold air intensity is stronger.The analysis results can provide reference for ice condition prediction and ice-flood prevention of the Yellow River.

关 键 词：防凌作用 封河流量 流凌和封河条件 海勃湾水库 内蒙古河段 

分 类 号：TV875[水利工程—水利水电工程]