萨克拉门托水文模型在天生桥洪水预报的应用

南盘江天生桥一级电站坝址以上流域位于云贵高原的东南斜坡，高原、丘陵、盆地错综其间，流域面积５０１３９，流域内岩溶较发育，洪水受溶洞、暗河的调蓄影响较严重，暴雨呈多中心分布，雨强分布不均，洪水过程以复峰矮胖型居多。因此，选用具有超渗和蓄满产流特性的萨克拉门托水文模型来建立天生桥一级电站入库洪水预报数学模型，比选用其它水文模型来进行洪水预报的效果更佳。

Application of Sacramento Hydrological Model In Flood Forecast for Tianshengqiao-I Hydropower Project

The river basin of the Nanpanjiang River with its catchment area at the damsite of the Tianshengqiao-I Hydropower Project of 50139 km2 is located in the southeast slope of the Yunnan-Guizhou plateau making a feature of high mountains combined with hilly land and basin plain in between, and is characterized by developed karst, flood being badly affected by solution caverns and underground rivers in terms of storage regulation, concentrated storm rainfalls, unevenly distributed rainfall intensity and existence of more short and plump type double flood peak. Therefore, using the Sacramento hydrological model that has excessive and full runoff producing characteristics to establish a reservoir inflow flood forecast mathematical model is superior to any of other hydrological models for flood forecast.