上游水电站控泄条件下的施工导流效益评价  

Evaluation on benefits of construction diversion under upstream flow control

作　　者：陈述[1,2] 胡志根[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,武汉430072 [2]三峡大学水电工程施工与管理湖北省重点实验室,湖北宜昌443002

出　　处：《水力发电学报》2015年第2期181-188,共8页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金(51279137)

摘　　要：梯级建设条件下,上游水电站控制下泄流量是施工导流风险调配的有效途径。本文针对上游水电站控泄作用的效益评价问题,以上游水电站和施工导流系统为研究对象,系统分析上游水电站运行方式的转变对自身效益、下游在建工程的影响。以自由泄流工况为基准点,基于施工导流系统的视角,通过分析上游水电站控制下泄流量对施工导流标准、施工进度、防洪安全的影响,计算上游水电站控制下泄流量的综合效益。以发电损失为控泄成本,将效益费用比作为评价准则,经济性论证利用上游水电站控泄作用来分配施工导流风险方法的可行性。最后通过案例分析,表明该方法是有效、可行的。Upstream flow control is an effective way to allocate downstream diversion risk in construction of cascade hydropower stations. Aiming at evaluation on the benefit of upstream flow control measure, this study systematically examines the generation benefit of upstream stations and the downstream stations under construction influenced by operation transformation in these upstream stations, focusing on the upstream stations and the downstream construction diversion. We explore the impact of flow control on diversion standards, construction progress, and flood safety, from a perspective of the construction diversion system and by comparison with that in free discharge condition. With consideration of all these effects, comprehensive benefits of the upstream flow control measure are calculated, and economic feasibility of a diversion risk distribution method with upstream flow control is quantitatively evaluated according to cost and benefit by taking loss in power generation as costs of flow control and selecting benefit-cost ratio as evaluation criteria. A numerical example of risk analysis shows that the method is feasible and effective.

关 键 词：水利工程施工 施工导流 效益评价 控泄 效益费用比 

分 类 号：TV122[水利工程—水文学及水资源]