改进的非线性时变增益模型在本溪中小河流洪水模拟中的应用

Application of Improved Nonlinear Time-varying Gain Model in Flood Simulation of Small and Medium Rivers in Benxi

文章以华尖子、二户来站水文站为实例,探讨改进的非线性时变增益模型在本溪地区中小河流洪水模拟的适用性。结果表明:改进的非线性时变增益模型解决传统模型未能考虑雨强对洪峰影响,相比于改进前,改进后的模型洪水模拟精度得到明显提升,研究成果对于本溪地区中小河流超标准洪水预报方案构建具有重要的参考价值。

Taking Nandian Hydrological Station as an example,the applicability of the improved nonlinear time-varying gain model in flood simulation of small and medium rivers in Benxi area is discussed in this paper.The results show that:the improved nonlinear time-varying gain model solves the problem that the traditional model fails to consider the impact of rain intensity on flood peaks.Compared with the previous improvement,the flood simulation accuracy of the improved model has been significantly improved.The research results exceed the standard flood for small and medium rivers in Benxi area.The construction of forecasting scheme has important reference value.