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水文预报方案是进行水系实时洪水预报的基本依据,在防洪决策中发挥着十分重要的作用。但由于十几年来淮河流域工程情况和河道水力特性发生了很大变化,原有方案已不太适应当前河道、流域的实际情况,有些预报方案已无法使用或者洪水预报精度明显下降,现就沙颍河水系沙河漯河站预报方案修订进行说明与分析。本方案采用1956～1998年共54次洪水进行评定分析,以沙河马湾来水为主时有29次,有一次洪水点据偏离曲线较远,为不合格点据;以浬河何口来水为主,罗湾不分洪时有16次,有1次洪水为不合格点据。本次方案共摘录的54次洪水中有
Hydrological forecasting scheme is the basic basis for carrying out real-time flood forecast of water system and plays a very important role in flood control decision-making. However, due to great changes in engineering conditions and hydraulic characteristics of the river system over the past ten years, the existing schemes have not been adapted to the actual conditions of current river basins and watersheds. Some of the prediction schemes have become unusable or the accuracy of flood forecasting has dropped significantly. Yinghe River Shahe Luohe forecast forecasting program to explain and analyze. This program uses a total of 54 floods from 1956 to 1998, assessment and analysis, mainly to the Shahe Ma Bay came when there are 29 times, there is a flood point far from the curve, as a basis for substandard data; Water-based, Luo Bay irrespective of flood 16 times, there is a flood of unqualified data. There are 54 floods excerpted in this program