乌东德-白鹤滩梯级水电站间河道水流传播规律探究  

On the Water Flow Propagation Characteristics in the River Channel between Wudongde and Baihetan Cascade Hydropower Stations

作　　者：刘邓 许利文 秦勇 王仲昌 郑林祥 吕成 李魏龙 LIU Deng;XU Liwen;QIN Yong;WANG Zhongchang;ZHENG Linxiang;LV Cheng;LI Weilong(China Yangtze Power Co.,Ltd.,Wuhan 430071,China)

机构地区：[1]中国长江电力股份有限公司,湖北武汉430071

出　　处：《水电与新能源》2024年第10期35-38,43,共5页Hydropower and New Energy

摘　　要：随着世界第七、第二大的乌东德、白鹤滩水电站的建成投产,为更好发挥梯级水电站发电与防洪联合调度的效益,探究其河道的传播规律非常重要。通过水力学经典公式对传播时间进行分析,并基于两电站间河道2019~2022年水库蓄水前后的实际传播流量、水位等数据统计论证,得到该河段传播时间与首、末端水位及传播流量的关系:水库的蓄水极大地缩短了河段的传播时间;该河段的传播时间在河段末处于中低水位时,其受传播流量与河段末水位的影响相当;该河段的传播时间在河段末处于高水位时,由于回水的影响,其受传播流量的影响很小,基本处于较固定的数值附近。As the seventh and second largest hydropower stations in the world,Wudongde and Baihetan Hydropower Stations have been completed and put into operation.To further utilize the benefits of the joint dispatching of these cascade hydropower stations in power generation and flood control,it is of great importance to explore the propagation characteristics of the river channel.The propagation time is analyzed with classical hydraulic formulas.Then,based on the actual statistic data of the propagation flow and water level in the river channel between the two stations before and after the reservoir impoundment from 2019 to 2022,the relationships between the propagation time and the water levels at the beginning and the end of the river section and the propagation flow are determined.It shows that the water storage of the reservoirs greatly shortens the propagation time in the river section.The influence of the propagation flow on the propagation time of the river section is equivalent to that of the water level at the end of the river section when it is at a low to medium water level.When the water level at the end of the river section is at a high level,the propagation time is basically remained around a relatively fixed value and hardly affected by the propagation flow due to the influence of the return water.

关 键 词：梯级水电站 河道传播 传播时间 谢才公式 曼宁公式 

分 类 号：TV698[水利工程—水利水电工程]