基于InfoWorks ICM模型的合流排水渠箱优化调度研究

Optimal Scheduling of Conbined Drainage Tanks Based on InfoWorks ICM Model

目的优化广州市东濠涌(珠江广州段河道)流域的合流排水渠箱泄水闸的运行方式,解决泄水闸开闸频繁的问题.方法基于InfoWorks ICM软件,建立东濠涌流域的排水系统水力模型,筛选实测的降雨量和液位,以中雨、暴雨降雨数据用于模型参数的确定,大雨降雨数据用于模型验证,模型模拟得到最优开闸液位.结果优化后的合流排水渠箱泄水闸最优开闸液位为2.80 m,较之人工操作的开闸最高液位2 m提升了0.8 m;泄水闸运行方式优化后,2017年1月~2017年7月减少开闸次数7次,等比例换算至年开闸次数减少比例为77%、减少泄水闸年泄水量总和为378669.13 m^3.结论经验证后InfoWorks ICM水力模型可靠性高,可模拟分析得到最优开闸液位,更有效地防止内涝、减少河涌污染.

The purpose of this paper is to optimize the operation mode of the sluice gate of the combined drainage tank in the DongHaochong,Guangzhou(Guangzhou Reach of Pearl River),and to solve the problem of frequent opening of the sluice gate.The hydraulic model of the drainage system in the DongHaochong basin is established based on InfoWorks ICM software.The measuring rainfall and liquid level data are screened,and mid-rain and rainstorm data are used to determine the model parameters,the heavy rain data for model verification,and the optimal level of sluice opening is obtained by model simulation.The results show that the optimal level of sluice opening of the combined drainage tank is 2.80 m,which is 0.8 m higher than the manual operation of the maximum liquid level of 2 m.Since the operation mode optimized of the sluice gate,the number of opening trips is reduced 7 times from January to July 2017,and annual number reduced 77%by equal proportion coversion,and the sum of the annual discharges of the sluice gates is reduced by 378669.13 m^3.So the InfoWorks ICM hydraulic model has high reliability.The optimal opening liquid level can be obtained by the model,which can effectively prevent waterlogging and reduce river pollution.