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根据洪水传播和运动的特性,建立了适合沁河高庄段实际情况的二维数学模型.模型为非结构网格,采用单元中心的有限体积法求解控制水流运动的二维方程.应用此数学模拟方法模拟沁河高庄段洪水漫堤过程.确定了河道糙率,洪泛区选取不同糙率,用此二维模型对高庄河段100年一遇洪水进行模拟计算,得到洪水淹没范围及淹没水深和水流流速.高庄河段100年一遇洪水情况下的淹没深度、淹没面积和观测点淹没过程,可为风险分析和灾害损失评估提供参考依据.
According to the characteristics of flood propagation and movement, a two-dimensional mathematical model suitable for the actual conditions of Qinhe high-rise section is established. The model is an unstructured grid, and the finite volume method of unit center is used to solve the two- The simulation method simulates the flood embankment process of Qinzhuang Gaozhuang section, determines the roughness of the river course, selects the different roughness in the floodplain area, simulates the flood of 100 years in Gaozhuang reach by this two-dimensional model, and obtains flood inundation range And submerged water depth and water flow rate.The submerged depth, submerged area and observation submerged process in the case of floods in the Gaozhuang reach of 100 years can provide reference for risk analysis and disaster loss assessment.