唐家山堰塞湖应急除险工程堰塞坝下游洪水演进复演验证

Numerical simulation and verification of flood routing for risk-elimination of Tangjiashan Landslide Dam

将溃坝模型和传统一维非恒定流模型相结合,建立了溃坝洪水演进数学模型。采用DEM数字模型插值技术快速获取计算断面地形,能适合于资料缺乏情况下的应急模拟计算。运用该模型,对唐家山堰塞湖应急除险工程堰塞坝下游洪水演进过程进行了复演计算,验证结果表明计算的水位、流量过程与实测情况符合较好,从而证明了模型的可靠性。

A numerical model of flood routing for dam-failure is established by integrating the dam-failure model with the traditional one-dimensional unsteady flow model.The terrain for the calculation cross-section rapidly extracting with the interpolation technique of DEM digital model can adapt the emergency simulation and calculation in lack of the information concenred.With this model,the process of flood routing for the risk-elimination of Tangjiashan Landslide Dam is simulated herein.The verification shows tha...