考虑溪洛渡水库调蓄影响的向家坝分期汛限水位研究  

Study on Segmentation of Flood Control Level on Xiangjiaba Reservior Considering the Influence of Xiluodu Reservior Regulation

作　　者：李英海[1,2] 夏青青 张海荣 王永强[4] 涂玉律 聂盼盼 LI Yinghai;XIA Qingqing;ZHANG Hairong;WANG Yongqiang;TU Yulv;NIE Panpan(College of Hydraulic&Environmental Engineering,China Three Gorges University,Yichang 443002,China;Engineering Research Center of Eco-environment in Three Gorges Reservoir Region,Ministry of Education,China Three Gorges University,Yichang 443002,China;China Yangtze Power Company Limited,Water Resources Research Center,Yichang 443002,China;Water Resources Department,Yangtze River Scientific Research Institute,Wuhan 430010,China)

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002 [2]三峡大学三峡库区生态环境教育部工程研究中心,湖北宜昌443002 [3]中国长江电力股份有限公司水资源研究中心,湖北宜昌443002 [4]长江科学院水资源综合利用研究所,湖北武汉430010

出　　处：《水文》2021年第3期32-37,共6页Journal of China Hydrology

基　　金：湖北省教育厅科学技术研究项目(D20201201);国家自然科学基金资助项目(51409152,51909010);三峡大学学位论文培优基金项目(2020SSPY004)。

摘　　要：针对梯级水库建成后,上游水库调蓄对下游水库汛限水位影响的问题,以溪洛渡-向家坝梯级水库为研究对象,根据溪洛渡汛期调度规则对向家坝入库径流进行还现计算后,引入近似熵法对天然径流条件和考虑溪洛渡水库调蓄影响的向家坝水库进行汛期分期,进而对调蓄前后分期汛限水位进行计算,并对其防洪风险和发电效益进行分析。结果表明,考虑溪洛渡水库调蓄影响,向家坝可由过去单一汛限水位设置为前汛期375.6m、主汛期373.8m的分期汛限水位,在不增加防洪风险前提下,采用分期汛限水位较原设计汛限水位汛期可增加发电量4.65×10^(6)KWh。研究可对梯级水库汛限水位的确定提供理论支持。Aim at the problem that the upstream reservoir's regulation affect on the flood control level of the downstream reservoir after completion of cascade reservoir,this paper took Xiluodu-Xianjiaba cascade reservoir as the research object.The inflow runoff of Xiangjiaba was calculated according to the Xiluodu flood season scheduling rules.Then the approximate entropy method was in-troduced to carry out flood season staging of natural runoff conditions and the runoff under the consideration of Xiluodu Reservoir's operation,and the segmentation of flood control level was calculated before and after Xiluodu Reservoir's operation.Besides,the flood control risk and power generation benefit were analyzed.The results show that the flood control levels are 375.6m and 373.8m respectively in the pre-flood season and main flood season considering the impact of Xiluodu reservoir regulation.Under the premise of not increasing the flood control risk,power generation can be increased by 465×10^(6) KWh by using the segmentation of flood control when compared with the original design level.It could provide theoretical support for the determination of the cas-cade reservoir flood control level.

关 键 词：梯级水库 溪洛渡调蓄 近似熵 分期汛限水位 

分 类 号：TV697.1[水利工程—水利水电工程]