瓯飞一期围垦工程排涝规模优化计算

An optimized calculation of drainage scale for first phase reclamation project of Oufei

根据排涝标准及闸门调度控制原则,采用平面二维数学模型对瓯飞一期围垦工程进行排涝规模优化计算,针对感潮地区围垦工程排涝布局复杂、计算工况较多等情况,将正交试验法应用到优化计算中,减少了计算组次,提高了效率;根据极差分析法找出了围区最高洪水位影响因素的主次顺序,从而进一步优化了排涝规模组合方案。通过计算推荐两个较优方案,两个方案的排涝宽度均比设计方案总净宽小,减少了工程投资,为设计及工程运行提供了依据。

Based on the drainage standard and the gate operation principle, a two-dimensional mathematical model was adopted for optimized calculation of the drainage scale of the first phase reclamation project of Oufei. Because of the complicated drainage layout of the reclamation project in the tidal area and the large number of calculation conditions, the orthogonal experiment design was applied in this study to reduce calculation times and improve efficiency. The sequence of the influence factors to the highest flood water level was also determined with the extremum difference analysis to further optimize the combination scheme of the drainage scale. Two optimization schemes were obtained based on the calculation. The drainage widths of these two schemes are both smaller than the total width of the design scheme. The optimized calculation reduces the project investment and provides a basis for the design and engineering operation.