西南涌属于北江下游大堤左岸的分洪河道。西南水闸重建后，通过调节西南水闸闸孔的开度，引入北江水进行河涌整治，将导致西南涌上游污染物向下游迁移，但涨潮时须关闸门，不让污染较严重的西南涌水进入北江。由于下游珠江口河水的上溯，上下游河水交汇处河水流速最小，污染物的交换能力最弱，导致污染物的最大浓度沉积。本研究将应用珠江口一维感潮河网模型，从水环境效果的角度出发，模拟分析在水环境容量较小的平、枯水期，不同的引水方案对水质的影响程度，提出最佳引水方案和河涌整治措施建议。%Xinanehong is the floodway in the left bank of the North River downstream. By adjusting the Xinanchong Sluice o- pening hole, introducting the North River to regulate the surge water, will remove the pollutants from upstream to downstream of the southwest sliuse, and pollutants will result in the greatest concentration, because the downstream of Pearl River flow up- stream, the water flows smallest in the interchanges of upstream and downstream, and the exchange capacity of pollutants achieves the weakest. In this study, This paper researches how the pilotage programme affecting the water quality from effectiveness of wa- ter environment, and bring forward the best pilotage programme and management program of sluice.
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