关键词: 滞洪区, 泄洪方式, 泄洪总量, 洪峰水位, 水动力模型, 浦阳江

Abstract: In order to investigate the response relationship between Gaohu flood retarding basin operation and flood control of Puyang River, 2D hydrodynamic model is established to analyze the influence of different flood discharge amount and operation mode of Gaohu Lake sluice on the flood water level along the Puyang River for smooth flood process. The results show that the flood peak water levels at the typical positions in the reach of upstream entrance to Meichi of Puyang River are the lowest when flood release process varies evenly and the variations of flood peak water levels are relatively smaller when flood release increases first and then decreases or gradually decreases; with the increase of flood discharge amount, the difference of flood peak level between evenly varied discharging process and the later two discharging processes increase, in which, when the flood discharge amount are 15 million m3 and 25 million m3, the differences of flood peak level at the typical positions are 0.03~0.07m and 0.05~0.11m, respectively; for the flood release mode of first increase and then decrease, the flood water level is the lowest on the second flood day and the flood water level variations for another 2 flood release modes are basically the same. The analysis results can provide references for flood control of Puyang River.

Key words: flood retarding basin, flood discharging process, flood discharge amount, flood peak water level, hydrodynamic model, Puyang River