入海水系整治水情数值模拟方法

入海水系河道纵横交错，其水流同时受上游河道来水、下游出口潮汐顶托、水工建筑物调控等的综合影响，水文情势十分复杂。采用水文预报与数值模拟结合的方法，对上游各边界河道采用由瞬时单位线法推得的设计洪水过程作为入流条件，对入海边界根据潮位过程及水工建筑物调节规程确定出流边界条件，进行了来水与潮位不同遭遇多种工况下的水文水流预测模拟，为水系整治提供水情依据。

Numerical Simulation of Water Flow Affected by Tide

Channel system consisting of tidal river system is affected each other. The water flows are affected comprehensively by upstream inflow, tide in outflow and hydraulic structure. The hydrological regime is very complicated. The hydrological prediction method and numerical simulation method is united to simulate water flows in river system with the design flood hydrograph as the upstream boundary condition and the tide induced from downstream boundary and gate control. Many cases of combination of design flood and tide are simulated, which are used for regulating the river system.