黄河上游龙羊峡以上大型水电站工程可能最大洪水估算初探

在分析黄河龙羊峡以上河段及邻近地区的大暴雨和气象资料的基础上,采用在龙羊峡水电站工程可能最大洪水(PMF)估算中使用的简化方法,即利用历史大洪水反推PMF的设计方法,先估算黄河上游玛曲水文站、唐乃亥水文站以上流域PMF,然后以玛曲站和唐乃亥站为依据站,取面积为权数进行线性内插,推求黄河上游龙羊峡以上大型水电站工程PMF。经与黄河上游已建大型水电站工程PMF成果比较,经合理性分析最终确定黄河龙羊峡以上大型水电站工程PMF成果。

Estimation of PMF for Large-sized Hydropower Stations at the Upper Reach of Longyangxia Hydropower Station on the Yellow River

Based on analysis of data on big storms and meteorology at the upper reach of Longyangxia Hydropower Station and that in the neighboring regions on the Yellow River,probable maximum floods（PMF）for the reach at upstream of Maqu Hydrological Station and Tangnaihai Hydrological Station on the upper Yellow River is estimated by the simplified method（namely,the design method of PMF derived from application of the historical floods） applied for the PMF estimation of Longyangxia Hydropower Station.Then,both Maqu Hydrological Station and Tangnaihai Hydrological Station are worked as basis stations and area is taken as weight number to perform the linear interpolation,deducting and calculating PMF for large-sized hydropower stations at the upper reach of Longyangxia Hydropower Station on the Yellow River.Through comparison with PMF results of the large-sized hydropower stations completed on the upper Yellow River and by reasonable analysis,PMF for large-sized hydropower stations at the upper reach of Longyangxia Hydropower Station on the Yellow River is finalized.