台风是我国海岸带的最主要致灾因素；与此同时，近年来我国近岸海域兴建的一部分人工岛对邻近的陆域岸滩造成了严重的侵蚀，工程区域的海岸防灾减灾工作迫在眉睫，与之密切相关的海岸演变规律和机制也是相关领域研究的前沿和热点。本项目拟以我国海南岛东部人工岛邻近的陆域岸滩为例，围绕台风和人工岛共同影响下的海岸演变机制，通过对现场观测资料的统计分析，梳理台风影响下的人工岛邻近陆域岸滩的变化规律，对不同天气条件下人工岛邻近陆域海岸地形变化尺度进行定量化研究，并基于观测数据建立水动力-泥沙输运-岸滩演变综合模型，借助该模型揭示人工岛附近陆域岸滩对台风的响应过程和机制，探索台风和人工岛共同影响下的侵蚀热点分布特征及其变化，在此基础上建立海岸演变预测模型，揭示岸滩变化趋势。研究成果既可丰富当前气候环境和人类活动作用下海岸动态变化规律和机制的相关理论，又能为人工岛邻近陆域的海岸防灾减灾提供理论依据。

Typhoon is the main disaster-causing factor in China's coastal zone. At the same time, in recent years, part of coasts in our country have been eroded because of the construction of artificial islands. The coastal disaster prevention and mitigation work in these engineering areas is imminent, and the evolution rule and mechanism of coasts are the frontier and hot topics in the related research fields. Taking the coast near the artificial island in the east of Hainan Island as an example, this project will focus on the coastal evolution mechanism under the influence of both typhoon and artificial island. The variation of the beaches in the vicinity of the artificial island under typhoon will be sorted out through the statistical analysis of the observed data, and the quantitative study on the beach change near the artificial island under different weather conditions will be carried out. Based on the hydrodynamic and bathymetric data, the comprehensive model of hydrodynamic, sediment transport and coastal evolution will be established. Through the established model, the process and mechanism of beach response to typhoon events near the artificial island will be revealed, and the distribution of erosion hotspots and their variations under the combined influence of the typhoon and the artificial island will be explored. Based on the above findings, a prediction model of coastal evolution will be established, revealing the evolution trend of the beach. The research results can not only enrich the relevant theory of the mechanisms of coastal dynamics under the influence of current climate and human activities, but also provide theoretical basis for coastal disaster prevention and mitigation in the vicinity of artificial islands.