永定新河挡潮闸修建后泥沙淤积分析

Analysis on the Sediment Deposition of Yongdingxin River after the Built of Tide Gate

通过建立一维泥沙数学模型,计算分析了永定新河河口建闸前后的泥沙淤积数量及分布。结果表明,河口建闸能有效改变泥沙淤积部位,减少河道泥沙淤积数量,通过辅以疏浚清淤措施,可以解决永定新河泥沙淤积带来的防洪问题。

In this paper, the sediment deposition in the Yongdingxin River is analysized after the built of tide gate at estuary by 1 D mathematic model. It shows that the built of tide gate can change the region of sediment deposition, and reduce the total amount of deposition. It can resolve the problem of flood control caused by sediment deposition by the way of building tide gate and dredging behind the gate.