变动态存储系数法在辽宁大凌河流域河道洪水演算中的运用研究

摘要

本文选用变动态存储系数法进行河道洪水演算，弥补传统水文模型河道洪水演算将洪水传播时间设为定值的不足。论文选取辽宁大凌河上游大城子水文站2000-2013年15场洪水资料对模型进行率定和验证，并和传统水文模型河道洪水演算方法模拟结果进行对比研究，结果表明相比于传统水文模型，采用变动态存储系数法的洪水模拟精度有所提高，15场洪水模拟合格率提高20%。研究成果对于大凌河流域水文模拟，特别是分布式水文模拟提供较为重要的参考价值。%In this paper,the variable storage routing method was selected to simulate the flood which can im-prove the traditional river flow simulation method.Based on the fifty flood data in 2000-2013 in the Dachengzi hydrological station which is in the upper stream of Daling River in the Liaoning province ,and the simulated results by the variable storage routing method and the traditional method were compared.The results shows that compared to the traditional hydrological modeling ,the variable storage routing method can improve the precision of the simulation.The pass rate of fifty flood simulation was improved 20%.The outputs can take reference to the hydrological simulation, especially to distributed hydrological simulation.