近岸人工沙坝的剖面演变规律和泥沙输运机制研究综述

Review on morphological evolution of nearshore artificial sandbar and underlying sediment transport mechanisms

近岸人工沙坝养滩是一种重要的海滩养护手段,开展人工沙坝地形演变研究是海岸带保护修复工程的重要需求。本文围绕不同动力条件下的人工沙坝横向迁移规律、形态演变模式、地貌耦合规律和水沙运动机制等理论层面,以及人工沙坝平衡剖面描述和演变过程数值模拟等方法层面,总结了近年来关于人工沙坝剖面演变规律和泥沙输运机制的国内外研究进展,并提出了关键过程机理深化、模拟预测方法改进和实际养滩工程应用等方面的今后研究重点。

Implementation of the artificial sandbar is a typical measure for the beach nourishment.Research on the morphological evolution of the artificial sandbar meets the important need for coastal protection and restoration.Domestic and international research on morphological evolution of nearshore artificial sandbar and underlying sedi-ment transport mechanisms are summarized in this paper,focusing on the theoretical aspects,e.g.cross-shore mi-gration,morphology evolution,morphology coupling and mechanisms of sediment transport of the artificial sand-bar.In the methodology perspective,the description of the equilibrium profile and numerical modelling of morpho-logy evolution of the artificial sandbar are also highlighted.It is also proposed that future research should focus on the deepening of mechanisms of key processes,the improvement of simulation and prediction methods and the ap-plication of practical beach nourishment projects.