水利工程影响下的宜昌站枯水期水位流量分析  

Analysis of Water Level and Flow of Yichang Station in Dry Season considering the Influence of Water Conservancy Projects

作　　者：庞树森 陈荣波 彭付近 胡翔 谢志刚 PANG Shusen;CHEN Rongbo;PENG Fujin;HU Xiang;XIE Zhigang(China Yangtze Power Co.,Ltd.,Yichang 443133,China;Hubei Key Laboratory of Intelligent Yangtze and Hydroelectric Science,Yichang 443133,China;Powerchina Kunming Engineering Corporation,Kunming 650051,China;Yichang Hydrological Bureau,Yichang 443000,China)

机构地区：[1]中国长江电力股份有限公司,湖北宜昌443133 [2]智慧长江与水电科学湖北省重点实验室,湖北宜昌443133 [3]中国电建集团昆明勘测设计研究院有限公司,云南昆明650051 [4]宜昌市水文局,湖北宜昌443000

出　　处：《水电与新能源》2022年第11期14-17,共4页Hydropower and New Energy

基　　金：国家自然科学基金项目(U2040220)。

摘　　要：为研究葛洲坝、三峡工程对宜昌站枯水期水位流量产生的影响,采用1962年以来宜昌站水位流量数据,分段分析枯水期宜昌站流量年际变化规律、年内径流占比变化,拟合枯水期水位流量关系,探索相同流量下水位变化特征以及年最低水位变化情况。分析表明,宜昌站枯水期水位流量受三峡水库调蓄影响较大,受葛洲坝影响较小;枯水期平均流量整体呈现先降后涨趋势,并在2013年出现突变点;年最低水位总体呈现“先降再升后稳”的趋势。To study the influence of Gezhouba and Three Gorges projects on the water level and flow of Yichang Station in the dry season, the water level and flow data of Yichang Station since 1962 are analyzed in sections to get the annual variation of flow and the variation of runoff proportion within a year. Then, the relationship between the water level and flow in dry season is fitted to explore the variation characteristics of water level under the same flow and the variation of the annual lowest water level. The results show that the water level and flow of Yichang Station in dry season are greatly affected by the regulation of the Three Gorges Reservoir, while less affected by the Gezhouba project. The average flow in dry season generally shows a trend of decreasing firstly and then rising, and a sudden change occurred in 2013. The annual lowest water level generally presents a trend of deceasing firstly, rising then and stabilizing finally.

关 键 词：枯水期 变化趋势 径流占比 水位流量关系 水库调蓄 

分 类 号：TV12[水利工程—水文学及水资源]