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针对平原感潮区内地势平坦、河涌密布、洪水受外江(海)潮水顶托的复杂排涝问题,研究了平原感潮区水闸和泵站联合运用的排涝分析步骤和计算方法,并将改进的平湖法应用于广州市典型感潮区的排涝分析计算中。结果表明,改进平湖法将河网概化为蓄水湖泊,并考虑了不恒定流水面曲线的变化规律,可作为平原感潮区排涝规划和排涝工程设计的参考。
In view of the complex drainage problems in the tidal flat area with flat terrain, dense river creek and flooding caused by the tide of the outer river (sea), this paper studies the drainage analysis steps and calculation methods of the sluice gate and pumping station in the tidal flat area, The improved Pinghu method is applied to the calculation and analysis of drainage in the typical tidal zone in Guangzhou. The results show that the improved Pinghu method can be used to generalize the river network as an impounding lake and take into account the variation law of the unsteady surface water curve, which can be used as a reference for drainage planning and drainage engineering design of the tidal flat.