基于洪水淹没模拟的水文水动力模型研究

Research on Hydrological Hydrodynamic Model based on Flood Inundation Simulation

通过耦合水文水动力模型探究新型城市雨洪模拟方法,在实现较快运算速度的基础上模拟流域下垫面洪水淹没情况,并以辽阳市境内太子河流域为例,检验耦合模型的适用性与可行性。研究表明:区域淹没水深验证值与模拟值具有较高的吻合度,水量平衡误差较小可用于洪水预报及模拟;通过对比分析达最大水深时间图与淹没水深图,从时间与空间的角度揭示区域洪水分布特征,以期为流域防洪规划及洪水治理提供数据支持。

A new urban stormwater simulation method is explored by means of coupled hydro-hydrodynamic model,the inundation of the underlying surface of the basin is simulated on the basis of realizing fast computing speed,taking the Taizi River basin in Liaoyang city as an example to verify the applicability and feasibility of the coupling model.The study shows that the verified value of submergence water depth has a high consistency with the simulated value,and the water balance error is small and can be used for flood forecasting and simulation.By comparing and analyzing the maximum depth chart and submerged depth chart,the distribution characteristics of regional flood are revealed from the perspective of time and space,so as to provide data support for watershed flood control planning and flood control.