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摘要


本文針對海岸或港灣區域,提出一利用斜坡削減波浪能量的新消能概念。新型結構物係由一前置斜坡、後方滯洪池及底部排水系統所組合,藉由適當坡度的選擇,促使波浪在斜坡上碎波、溯升及越波,並利用後側滯洪池收集越波的水體,減少回溯造波的發生,再以斜坡下的排水系統,將滯留水體排出。經水工模型試驗以及數值模擬的驗證,確認此一概念可以有效地削減反射波,提高水域的靜穩度。本文也從實用性的角度,利用溯升與越波等相關理論,進一步檢討建置與設置斜坡的評選方式。

並列摘要


By integraing the phenomena of wave deformations on a slopping bottom, and water discharge, a simple wave dissipation facility which assembles with a slopping bottom, a wave dissipating room and a bottomed discharge system was proposed. The major concept is to reduce and to prevent the reflection waves and thus might improve the water surface ocsillations from the superpositions of incident waves and reflected waves. Through the numerical simulations with CFD and the hydraulic model tests in a wave flume, the new conceptual structure was found to have good wave dissipation function even in long period incident wave cases with 40 sec wave period. This paper also discussed the design criteria via correaponding runup and overtoopping theories.

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