摘要
利用实测资料分析2012年黄河宁夏段洪水对河道纵、横断面的影响.结果表明：对河道纵剖面的影响表现为淤积,其中卫宁段淤积,青石段冲刷,主槽冲刷0.54亿t,最大冲刷深度达4∽5 m,滩地淤积0.59亿t,全河段淤积0.05亿t.对河道横断面的影响表现为对卫宁段分汊型河道河势影响不大,对青石段游荡型河段河势影响较大,河道摆动剧烈,最大幅度达300 m.整个洪水过程对减少河段淤积极为有利,塑槽作用显著,增加了过洪能力.为实现宁蒙河段的长治久安,建议尽快启动大柳树水利枢纽工程.
The measured data were analyzed using the river longitudinal cross section of the Yellow River in Ningxia flood affected segment in 2012, the results show： 2012 flood on the river longitudinal profile showed cholestasis, which Weining segment siltation, erosion bluestone segment, the main channel scour 0.54 million tons, maximum scour depth of 3 m, beaches siltation 0.59 million tons, the whole river siltation 0.05 million tons; cross section of the river segment performance for the Ningwei River braided river type has little effect on the bluestone wandering reach of the river segment the potential impact of large rivers swing violently, the most significant of 300 m; whole flood process is extremely beneficial for reducing river siltation,plastic tank significant effect, increasing the flood capacity; Ningmeng reach for the realization of long-term stability, it is recommended to start as soon as possible Daliushu Water Project.
出处
《农业科学研究》
2015年第1期45-48,共4页
Journal of Agricultural Sciences
基金
国家自然科学基金重点项目(51379003)
国家重点基础研究发展计划项目(2011CB403300)
关键词
洪水
於滩刷槽
黄河宁夏段
flood
depositing in floodplain and eroding channel
Ningxia section of Yellow River
