多孔分洪闸调度方案优化探讨——以洞庭湖澧南垸为例

Porous Floodgate Control Optimization Study: A Case Study on Linan Poler of Dongting Lake

摘要: 闸门启闭是水闸控制运用的关键。而科学合理的闸门控制调度方案，对于实现最好的分洪效果，保障闸门安全，有着十分重要的意义。以澧水津市站1998年及2003年洪水过程为基础资料，通过同频率控制放大得到设计洪水过程。对现有调度方案进行了评价，结果表明，现有调度方案分洪效果并不理想。根据最大削峰准则与最小成灾历时准则建立了澧南垸洪水闸优化调度目标函数及约束条件。依据所建目标函数，以频率5%的设计洪水过程线为例，制定了洪水闸优化调度方案。对所制定调度方案进行了评价，分析表明，此调度方案能达到较好分洪效果和安全保障。

Abstract: Opening and closing is the key of floodgate control and application. Scientific and reasonable control scheme, to achieve the best flood diversion effect and ensure gate security, has very important significance. According to the 1998 and 2003 flood process data of Li river of Jinshi hydrological station, through the same frequency control amplifier, design flood process is obtained. The scheduling scheme is evaluated, and results show that, the existing scheduling scheme of flood diversion effect is not good. Floodgate optimization objective function has been established. On the basis of the objective function, with a frequency of 5% of the designed flood hydrograph for example, a floodgate optimization control scheme has been developed. Analysis shows that the floodgate control scheme can achieve better flood diversion effect and safety.