无结构潮流泥沙数学模型在南通港通海港区总体规划中的应用

Numerical modeling of tidal current and sediment on general planning scheme of Tonghai harbor area at Nantong port

采用长江口航道维护管理核心计算平台《SWEM2D/3D》对南通港通海港区总体规划方案进行了潮流场的数值模拟研究。研究结果表明港区工程实施后对于徐六泾河段而言,是进一步加强了束流作用,工程效应范围集中在束流段的上段及圈围线前沿约1.5 km处;码头工程对苏通大桥主通航孔影响较小,落潮主流走主通航孔的情况不会改变,通航孔处流向基本无变化。规划港区码头工程对长江主航道、白茆沙水道、北支水道、新开沙夹槽、福山倒套等影响较圈围工程而言微小,对航线安全和船舶安全使用航道不构成威胁。

2-D tidal and sediment numerical model with triangular grids is set up to study the general planning scheme of Tonghai harbor area at Nantong port based on the Yangtze estuary waterway maintenance management platform“SWEM2D/3D”. According to the simulation results, the impacts of the general planning scheme on the nearby main waterways（ main channel of Yangtze, Baimao channel, Beizhi channel, Xinkasha channel and Fushan channel） are analyzed. The numerical simulation result shows that current on the Xuliujing section is further strengthened after the implementation of the general planning scheme. The impact scope of the general planning scheme is about 1.5 km away from the harbor. The affect of wharf engineering to Sutong bridge is very small, and its main navigable hole will keep stable. The general planning scheme of Tonghai harbor area has little influence on the tidal force in the nearby main waterways, and the general planning scheme is feasible.