APPLICATION OF ARTIFICIAL SUBMERGED SANDBARS TO BEACH NOURISHMENT——A CASE FROM BEIDAIHE BEACH
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摘要: 作为"软性"工程措施的人工养滩是与海岸生态环境最为和谐的海滩防护措施,即可用于侵蚀岸段的整治修复,亦可长效地防治海岸侵蚀。人工近岸沙坝一方面相当于淹没式离岸堤,使坝后被遮蔽区波浪减弱具有遮蔽功效;一方面将泥沙补给于被侵蚀的海滩剖面,具有喂养功效。应用数值模拟和物模试验探讨了沙坝的养滩功效,并以北戴河养滩工程为例证实了人工近岸沙坝在海滩养护工程中的作用。Abstract: As a kind of "soft" engineering method, artificial beach nourishment is regarded as the most harmonious beach protection measure to protect the coastal ecological environment. This method can repair the eroded shorelines and protect them from coastal erosion. Building artificial sandbars is one of the choices for beach nourishment. On one hand, it, as a kind of offshore submerged breakwaters with "shield efficacy", could weaken the wave energy and protect the areas behind the sandbars. On the other hand, it has "feeding efficacy" to provide sands to the beach for stability. Through numerical simulation and physical modeling, this paper discussed the beach nourishment efficacy of sandbars taking the Beidaihe beach nourishment project as an example.
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