电站日调节波对葛洲坝下游枯期通航条件影响  

Impact of daily regulation for hydropower station on navigation conditions of downstream side of Gezhouba project in dry season

作　　者：刘亚[1] 李义天[1] 孙昭华[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2009年第2期147-152,共6页Engineering Journal of Wuhan University

基　　金：国家重点基础研究资助项目(编号:2003CB415200)

摘　　要：根据三峡水库投入运用以来实测葛洲坝枯水期日内出库流量过程,比较了典型实测日调节流量波形与设计方案的区别.通过数值模拟分析了水位、流量沿程波动特性,以及对典型浅滩通航条件的影响.结果表明:设计方案与实测流量过程在波形、日均流量方面均存在明显差异;日调节波动影响范围为距坝约95 km的枝江断面附近;在日调节非恒定流影响下,芦家河的局部比降过大、枝江河段的通航水深不足等碍航问题将更加严峻.According to the observed data of discharge released from Gezhouba station in dry season after TGP was operated; the difference between designed scheme and factual daily regulation is summarized. Analysis of characteristics to the fluctuation in the downstream side is made by simulation of the fluctuation; and research on navigation conditions of the typical shoals affected by the fluctuation is carried out. The results indicate that the designed scheme and factual regulation differ in waveform and the average discharge value;impact of daily fluctuation couldn＇t be neglected until Zhijiang which is 95 km away from the dam. Under the impact of the daily fluctuation, the oversized partial gradient in Lujiahe canal and navigation depth insufficient in Zhijiang upper shoal will be more serious.

关 键 词：三峡水库 枯水期 日调节非恒定流 通航条件 

分 类 号：TV133.2[水利工程—水力学及河流动力学]