基于流域概化模型的感潮河口水闸设计

Design of Tidal Estuary Sluice Based on Watershed Generalization Model

感潮河口区水质受潮流和径流相互作用明显,水污染治理困难.借助河口水闸,能够实现高潮挡污、低潮冲污的目的,而目前针对感潮河口水污染控制的闸坝系统设计鲜见报道.本文基于MIKE11建立茅洲河流域概化水利模型,耦合建筑物过流能力与水动力矩阵方程,从而通过不同方案水位线比较确定闸门宽度、闸底板高程、泵站设置等关键参数,进而基于闸坝智能调度系统,保证河道通航,构建高潮挡污、低潮冲污的联动系统,为感潮河口水污染控制提供参考.

Water quality in tidal estuary is obviously affected by tidal current and runoff,which gives rise to difficulty for water pollution control.The estuary sluicesor dams achieve the purpose of preventing contaminants at high tide and washing contaminants at low tide.At present,the design of sluices system for water pollution control in tidal estuaries is rarely reported.Based on MIKE11,this paper establishes a generalized water conservancy model of Maozhou River basin,which couples the flow capacity of buildings and the hydrodynamic matrix equation.The key parameters such as sluice width,sluice floor elevation and sluicenet width are determined by water level comparison.Then,based on the intelligent dispatching system of sluice,the navigation of the river is guaranteed,and the linkage system of preventing contaminants at high tide and washing contaminants at low tide are constructed,which provides reference for water pollution control in tidal estuaries.