虎跳峡水电站区间可能最大暴雨的研究

Study on PMP of Hutiao (Tiget Leap) Gorge Basin

对虎跳峡水电站奔子栏至虎跳峡坝址区间流域可能最大暴雨计算 ,采用了当地暴雨放大和组合暴雨放大两种方法。其中 ,当地暴雨放大方法采用了水汽效率放大和水汽风速放大推求可能最大暴雨。为分析组合暴雨放大的合理性 ,还采用了随机模拟方法推求设计暴雨过程 ,并与组合暴雨放大的结果进行了对比分析。由计算结果可看出 ,组合暴雨放大结果比随机模拟方法结果偏大较多 ,采用此方法对工程设计更安全。但对组合序列的合理性和可能性 。

In this paper, two methods were applied to calculate the PMP of the basin between Benzilan and the Hutiao Gorge Dam of the Hutiao Gorge hydro-power station: the combined storm maximization and the local storm maximization. The author also used the vapor-wind-speed maximization and the vapor-efficiency-factor maximization to calculate the PMP in the second method. To analysis the rationality of the combined storm maximization, the author also compares the result calculated by random simulation and the result of the combined storm maximization. The former is much larger than the latter. It will be safer to use the result of combined storm maximization in the project design. But it's quite difficult to demonstrate the rationality and possibility of its combined scheme theoretically. This method still needs to be studied and improved.