外傘頂洲保護措施進行數值分析與水工模型試驗之-台灣海洋工程學會.PDFVIP

第25 屆海洋工程研討會論文集 國立台灣海洋大學 民國92 年 10 月 Proceedings of the 25th Ocean Engineering Conference in Taiwan, Republic of China National Taiwan Ocean University October, 2003 外傘頂洲保護措施進行數值分析與水 工模型試驗之研究 郭禮安 1 楊瑞源 2 劉景毅 3 張裕弦 4 摘要 本文之研究目的在經由數值分析及水工模型試驗，針對外傘頂洲逐年潛沒、後退之現象， 研擬出具體可行之外傘頂洲保護措施，俾利於政府相關單位推動執行外傘頂洲保護對策之參 考。因此本研究係先收集外傘頂洲附近海域之相關海象背景環境資料，並據此研判影響外傘頂 洲逐漸潛沒之機制，然後初步擬定外傘頂洲保護措施，先以數值模式進行各保護措施之成效性 與可行性評估，最後擇取最佳方案，以水工模型試驗進行校驗。研究成果顯示施予軟性工法之 柔性突堤群與潛沒式海底人工砂丘二種方案均可達到不錯之海岸保護成效。 Numerical and Physical Modeling Study on the Protection of Wai-San-Ting Barrier Island Li-Ani Kuo Ray-Yeng Yang J.Y.Liou Yu-Hsuan Chang ABSTRACT The research of this paper was objected for using both numerical and physical model aimed as submerging and retreating landscape phenomena of Wai-San-Ting barrier, to conclude an efficient and ensure method to save the Wai-San-Ting barrier. Further that to give the government some countermeasure of protection methods. By that, this paper must first to gather enough background data around the Wai-San-Ting barrier to analyze the submerging mechanism and dealing for-method. In procedures, the numerical model will be first on line to evaluate protection methods and as for the best evaluation will then be left for the physical model to do the proofreader. The result of this paper shows that soft groins and submerged artificial berms are two-effected methods that can be applied on Wai-San-Ting barrier. 而位處八掌溪北側之好美寮海岸則因已不在外傘頂 一、緒論 洲遮蔽區範圍內，因此較大之波浪可直接侵襲該處 嘉義縣東石、布袋與雲林縣口湖等沿海鄉鎮因 海岸，以致砂洲及海灘流失，防風