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建立了淮河中游洪河口至浮山段一、二维耦合水动力数学模型,采用实测洪水过程对模型进行验证,验证结果表明,模型具有较高的精度。基于水动力数学模型,在现状工况条件下,对1954年型洪水进行了调度模拟分析,研究了临淮岗洪水控制工程、行蓄洪区与分洪河道等防洪工程联合调度运用效果。计算结果表明,对于1954年型洪水,淮河干流行蓄洪区全部启用,不启用临淮岗工程,蚌埠以上大部分河段水位超保证水位,蚌埠以下河段水位低于保证水位。启用临淮岗工程,可以减轻下游的防洪压力,减少行洪区启用数量,减少行蓄洪区淹没面积,同时也增加了上游蓄洪区和部分河段的淹没水深和高水位历时。综合全河段分析,启用临淮岗工程,干流大部分河段水位较低,行蓄洪区淹没面积减少,防洪效果较优。
The mathematical model of one-dimensional and two-dimensional coupled hydrodynamics between Honghekou and Fushan sections in the middle reaches of Huaihe River was established, and the model was verified by the actual flood process. The verification results show that the model has high precision. Based on the hydrodynamic mathematical model, under the condition of current conditions, the 1954 flood was simulated and analyzed. The joint operation effect of flood control projects such as Linhuaigang flood control project, flood storage area and flood diversion channel was studied. The calculation results show that for the flood of 1954, the mainstream flood storage area of the Huaihe River is fully activated, the Linhuaiang Project is not activated, the water level of most of the above Bengbu reaches the water level, and the water level below the Bengbu River is lower than the guaranteed water level. Enabling the Linhuaigang project can reduce the flood control pressure downstream, reduce the number of floodplains to be activated, and reduce the floodplain floodplain area, meanwhile, increase the submerged water depth and high water level of upstream flood storage areas and some river sections. Based on the analysis of the whole river section, with the opening of Linhuaigang River Project, the water level of most of the mainstreams in the mainstream is lower, the flooded area in the flood storage area is reduced and the flood control effect is better.