杭州湾北岸漕径-柘林岸段的海堤预警分析

在分析杭州湾北岸漕径一柘林岸段海堤实测断面资料的基础上，利用剖面冲淤对比统计和非参数Mann-Kendall检验对不同岸段的断面稳定性进行研究，以揭示海堤潜在的危险程度。结果表明，海堤安全警戒线可分为三级：第1级：0m等深线，水平距离大堤约为50m；第2级：-3m等深线，水平距离大堤约为150m；第3级：-8m等深线，水平距离大堤约为400m。3级警戒线应视不同岸段而分别评价。

Sea Wall Warning Analysis of Caojing-Zhilin Bank Segment Along North Coast of the Hangzhou Bay

Based on the analysis results of the observed sea wall sectional data for the Caojing-Zhilin bank segment along north coast of the Hangzhou Bay, the comparative statistics of erosions and siltations in different sections and the non-parametric Mann-Kendall test are used to study the stabilities of different bank segments and to reveal the potential hazards to the sea wall. It is shown from the study results that the safety warning lines for the sea wall can be divided into three degrees, that is, the first-degree safety warning line is the 0 m isobath with a horizontal distance of about 50 m from the sea wall, the second-degree safety warning line is the -3 m isobath with a horizontal distance of about 150 m from the sea wall, and the third-degree safety warning line is the -8 m isobath with a horizontal distance of about 400 m from the sea wall. The three degrees of safety warning line should be evaluated separately for different bank segments.