本文之主要目的為探討成功筐網對海岸地形之影響，以實驗方法觀察波浪溯升時和碎波時斜坡底床之演變。成功筐網為一透水性結構物，有消波之效果。本文設計以不同之實驗條件組合，探討最有效的成功筐網保護方式。實驗參數包括筐網無因次間距N、擺設位置X及筐網擺設高度d。觀察實驗過程時發現，斜坡底床演變之主要特徵從離岸到近岸依序有：沙連、第一淤積丘、第一沖刷坑、第二沖刷坑、最後淤積丘。實驗結果顯示，無因次間距N為影響斜坡底床演變之主要因素。當無因次間距N越小時，成功筐網有效減少第一沖刷坑深度. 當設置成功筐網時，有助於最後淤積丘淤積。

This paper presents the study of coastal topography changes influenced by CKPB. The evolution of slope beach caused by wave run-up and wave breaking investigated in laboratory study. CKPB is a kind of porous structure which could reduce wave energy. Experimental conditions were designed to study the most efficient protection of slope beach. Experimental parameter included dimensionless interval N, located position P, and setup height d. Experimental process shows the characteristics of evolution of slope beach from offshore to onshore include: sand ripples, primary bar, and primary pit, secondary pit and final bar. Experimental results show the dimensionless interval N is a dominant parameter of evolution of slope beach. The scour depth of primary pit was decreased more efficiently by CKPB when the dimensionless interval N is smaller. Setting CKPB promoted the accretion of final bar.

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