垣曲抽水蓄能电站设计洪水分析

Design Flood Analysis of Yuanqu Pumped Storage Power Station

设计洪水分析是抽水蓄能电站工程设计的关键内容之一,以垣曲抽水蓄能电站为例,根据我国现行设计洪水理论,利用相关水文资料,结合历史调查洪水成果,分别采用水文比拟法、瞬时单位线法、推理公式法、经验公式法计算该电站坝址设计洪水,综合比较最终选择水文比拟法作为设计洪水结果,并利用地区综合法进行合理性检验。结果表明,垣曲抽水蓄能电站设计洪水符合区域暴雨洪水特性,研究结果可为山西省小流域设计洪水分析提供重要参考价值。

Reservoir design flood analysis is an important part of pumped storage power station planning and design.Taking Yuanqu pumped storage power station for an example,based on the current theory of design flood,hydrological analogy method,instantaneous unit hydrograph method,rational formula method and empirical formula method are used to calculate design flood of the dam site by combining the related hydrological data and historical investigation flood.After comparison of the above four methods,hydrological analogy method is selected.Finally,the rationality test is done by the regional synthetic method.The result shows that the design flood of Yuanqu pumped storage station meets the regional characteristics of rainstorm and flood.The research can provide a valuable reference for design flood of small basin in Shanxi Province.