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投稿时间：2014-01-04 修订日期：2014-09-26
投稿时间：2014-01-04 修订日期：2014-09-26
中文摘要: 水电站日调节产生的非恒定流常恶化下游河道的适航条件，需提出适合下游航道安全通航的水流控制参数。结合向家坝水电站下游日调节工况的水动力模拟计算和物理模型试验，分析枯水期向家坝水电站不同运行工况下的非恒定流传播特性及其对水位变幅、流速、比降等航运水力要素的影响规律，并通过自航船模试验进一步给出代表船型在重点航段通航上行的条件要求。研究结果表明：向家坝日内的调峰幅度和调峰变率不宜过大，建议日调节运行方式按枢纽下游水位最大小时变幅不超过1.5 m/h、最大日变幅不超过4.5 m/d进行控制，对向家坝下游航运影响较低。
Abstract:The navigable condition is often worsen by the effect of unsteady flow caused by daily regulation of hydropower station.In order to reduce this kind of phenomenon,the control parameters need to be proposed which can give appropriate safety navigable waterways.According to the results obtained by one-dimensional mathematical model calculation and physical modelling experiment,the propagation characteristics of unsteady flow caused by daily regulation of Xiangjiaba hydropower station under different operating conditions in the dry season were illuminated.Its influences on water level amplitude,velocity,slope and other shipping hydro impact factors were analyzed.The self-propelled ship model test was used for giving the conditions of navigation in key leg upward.The results showed that the peaking and peaking amplitude variability of Xiangjiaba hydropower station should not be too large in a day.The water level downstream hub amplitude does not exceed the maximum hours of 1.5 m/h,and the maximum daily amplitude does not exceed 4.5 m/d, which will have minor impact on navigation of downstream.
keywords: dailyregulation unsteadyflow mathematicalmodel physicalmodel hydraulicfactors navigationcondition
文章编号：201400015 中图分类号： 文献标志码：
基金项目:“十二五”国家科技支撑计划资助项目（2012BAB05B01）;博士后面上基金资助项目（2013M530635）
| 作者 | 单位 |
| 母德伟 | 重庆交通大学西南水运工程科学研究所 |
| 王永强 | 清华大学水沙科学与水利水电工程国家重点实验室 |
| 李学明 | 清华大学水沙科学与水利水电工程国家重点实验室 |
| 钟德钰 | 清华大学水沙科学与水利水电工程国家重点实验室 |
作者简介:
引用文本：
母德伟,王永强,李学明,钟德钰.向家坝日调节非恒定流对下游航运条件影响研究[J].工程科学与技术,2014,46(6):71-77.
Mu Dewei,Wang Yongqiang,Li Xueming,Zhong Deyu.StudyontheEffectofDownstreamNavigationbyUnsteadyFlow CausedbyXiangjiabaDailyRegulation[J].Advanced Engineering Sciences,2014,46(6):71-77.
引用文本：
母德伟,王永强,李学明,钟德钰.向家坝日调节非恒定流对下游航运条件影响研究[J].工程科学与技术,2014,46(6):71-77.
Mu Dewei,Wang Yongqiang,Li Xueming,Zhong Deyu.StudyontheEffectofDownstreamNavigationbyUnsteadyFlow CausedbyXiangjiabaDailyRegulation[J].Advanced Engineering Sciences,2014,46(6):71-77.