三峡水库156m蓄水宜昌站水文特性与水情预报  

Hydrologic features at Yichang station after 156 m impoundment of TGP reservoir and water regime forecast

作　　者：黄忠新 韩庆菊 李春香 虞海平 

机构地区：[1]长江水利委员会长江三峡水文水资源勘测局,湖北宜昌843000 [2]长江水利委员会长江中游水文水资源勘测局,湖北武汉430012

出　　处：《人民长江》2008年第13期5-7,共3页Yangtze River

基　　金：国家重点基础研究发展规划(973)项目(2003CB415205)

摘　　要：三峡水利枢纽工程1994年12月14日正式开工,1997年7月完成大江截流,2002年11月完成导流明渠截流,2003年5月25日开始关闸蓄水,形成库区。6月10日坝前水位蓄至围堰发电期水位135 m。2006年9月20日三峡水库再次蓄水,至2006年10月27日达到156 m蓄水高程。由于三峡水库属于年调节水库,该水库与葛洲坝水库联合调度对下游控制站宜昌站水沙特性变化有明显影响。对三峡大坝156 m蓄水后宜昌站的水位流量关系进行了分析,同时探讨了三峡水文局水情预报方案,实践表明,目前三峡水文局采用的水情预报方法预报精度较高,预报方案是可行的。The construction of TGP formally began on December,14 1994,the river closure was completed in July,1997,the open diversion channel was closed in November 2002 and on May 25,2003,the reservoir began impoundment and the reservoir was formed.Up to June 10,the water level reached to 135 m during cofferdam power generation period.On September 20,2003,TGP reservoir began impoundment again and the level reached water level 156 m on October 27,2006.Since the reservoir is an annual regulation one,the jointed-regulation with downstream Gezhouba reservoir obviously influences the flow-sediment features of downstream Yichang hydrologic control station.This paper covers the analysis on level-discharge relation of Yichang station after 156 m impoundment of TGP and the water regime forecast scheme.The practice demonstrates that the accuracy of the present water regime forecast performed by Sanxia Investigation Bureau of Hydrology and Water Resources is relatively high and the forecast scheme is feasible.

关 键 词：水位流量关系 水情预报方案 三峡水库156 m蓄水 宜昌站 

分 类 号：P332[天文地球—水文科学]