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黄河下游洪水高效输沙过程机理研究

批准号50279009 学科分类制造系统与自动化 ( E0510 )
项目负责人魏正英 负责人职称 依托单位黄河水利委员会黄河水利科学研究院
资助金额0.00
万元
项目类别面上项目 研究期限2003 年 01 月 01 日 至
2005 年 12 月 01 日
中文主题词高效输沙;黄河下游;输沙水量;河道冲淤;输沙能力
英文主题词High Efficient Sediment Transport, The Lower Yellow River, Sediment-carrying Water Volume, Sediment Transport Capacity

摘要

中文摘要 分析不同时期、不同边界条件、不同量级、不同泥沙组成的洪水对黄河下游河道冲淤的影响;研究洪水输沙特性及非恒定流挟沙能力物理图形;确定高效输沙流量及过程。对小浪底水库调水调沙具有指导意义,有利于黄河下游河道减淤,可节约黄河下游输沙用水。
英文摘要 The Yellow River faces a problem of less water and more sediment. The special water-sediment condition is the main reason to cause continous deposition in the Lower Yellow River. As the water resources become more and more tight, using less water to transport more sediment not only can guide the water and sediment regulation of the Xiaolangdi Reservoir, but also is an important way to reduce deposition in Lower Yellow. This project is to study characteristics of sediment transport in flood as well as affect of flood at different boundary, water amount and sediment percentage to deposition in the Lower Yellow River, and to propose the high efficient sediment transport flow rate and process. By data analysis, the relationship between sediment transport ratio of different sediment composition and discharge for the reach of Aishan to Lijin is set up. By introducing the water-sediment parameter, a math formula of calculating sediment transport water volume in flood season which is suitable to main control locations of the Lower Yellow River is derived. The paper probes into influences of different water and sediment parameters to high efficient sediment transport flow. The paper also discusses the creation of the high efficient sediment transport flow and the issue of sediment transport water volmue needed for the Lower Yellow River. After the operation of the Xiaolangdi Reservoir, the water and sediment entering in the Lower Yellow River can be controlled in certain level. Therefore, to study the high efficient sediment transport flow rate and process of flood is very useful. It gives strong technique support to the water and sediment regulation of the Xiaolangdi Reservoir and reduction of deposition in Lower Yellow River.
结题摘要 黄河水少沙多、水沙比例失调,特殊的水沙条件是造成下游河道淤积抬高的主要原因。在黄河水资源日趋紧缺的今天,用较少的水量去输送更多的泥沙,不仅对水库的调水调沙具有指导作用,也是下游减淤的一条重要途径。本项目主要研究洪水的输沙特性及不同边界条件、不同流量级、不同含沙量和不同泥沙组成的洪水对下游河道冲淤的影响,提出合理的水沙搭配及高效输沙流量及过程。根据实测洪水资料,建立了艾山-利津河段不同粒径组泥沙排沙比与流量间的关系,推导出了艾利段不淤积条件下艾山站的临界含沙量表达式。引入水沙搭配参数,建立了适用于黄河下游主要控制站汛期及洪水期计算输沙水量的数学表达式。探讨了各水沙因子对高效输沙洪水的影响作用。研究了洪水期输沙水量及高效洪水的塑造。试验研究了顺直河道和弯曲河道冲淤平衡的临界含沙量随流量和河床边界条件的不同而变化的规律。计算给出了小浪底水库修建后黄河下游河道的输沙水量。小浪底水库建成运用后,进入下游的水沙在一定程度上可以得到控制,能够产生人造洪峰,调节水沙减少淤积,因而研究洪水的高效输沙过程及机理具有较高的实用价值,可以为小浪底水库的调水调沙及黄河下游河道的减淤提供技术支持。

成果

序号 标题 类型 作者
1 不同时期黄河下游河道泥沙沉积与纵横断面调整 期刊 申冠卿|张原锋|尚红霞|
2 黄河下游游荡性河道水位涨率偏大的主要影响因素分析 期刊 孙赞盈|孙增寿|齐璞|姜乃迁|
3 黄河下游断面法与沙量法冲淤计算成果比较及输沙率资料修正 期刊 申冠卿|姜乃迁|张原锋|
4 黄河下游输沙水量及计算方法研究 期刊 申冠卿|姜乃迁|李勇|
5 河道大断面平滩流量推算实用新方法 期刊 孙赞盈|曲少军|李勇|魏向阳|

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