摘要
黄河下游漫滩洪水具有较强的塑槽作用,同时存在较大的淹没风险.通过实测资料分析、实体模型试验和数学模型计算,对黄河下游大漫滩洪水淤滩刷槽作用及淹没风险进行了初步探讨.研究表明：对于漫滩系数大于1.5 的实测大漫滩洪水,主槽冲刷量一般是滩地淤积量的0.35～0.80 倍.在漫滩系数小于2.5 时,主槽冲刷量增加不明显,但滩区淹没面积及淹没损失增加显著;在漫滩系数大于2.5 时主槽冲刷量明显增大,其滩地淹没面积达到最大,淹没损失增加缓慢.
The Yellow River floodplain flood has a strong making channel effect,at the same time there is a big risk of flooding. It is one of the fluvio-morphological subject important content. By analyzing the measured data,the physical model experiment and mathematical model calculation,it studied on the effect of the bank deposit main channel erosion and the flooded risk on the lower reaches of the Yellow River.The studies show that when the overbank flood coefficient is greater than 1. 5,the main channel fluvial sedimentation quantity is about 0. 35-0. 8 times of the bank deposition. The increase of main channel fluvial sedimentation quantity is not obviously and the flooded area and flood loss increase significantly when the overbank flood coefficient is less than 2. 5. The main channel fluvial sedimentation quantity increases obviously,flood area is the maximum and flood losses increase slowly when the overbank flood coefficient is greater than 2. 5.
出处
《人民黄河》
CAS
北大核心
2016年第1期45-47,共3页
Yellow River
基金
"十二五"国家科技支撑计划项目(2012BAB02B05)
中央级公益性科研院所基本科研业务费专项(HKY-JBYW-2014-07)
关键词
淤滩刷槽
漫滩洪水
淹没风险
黄河下游
bank deposit main channel erosion
overbank flood
flood risk
Yellow River
