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| 研究生： |
陳瑞昌 Jui-Chang Chen |
|---|---|
| 論文名稱： |
護坦及尾檻下游之局部沖刷分析 The Local Scour Behavior Downstream of Aprons and Sills |
| 指導教授： |
周憲德
Hsien-Ter Chou |
| 口試委員: | |
| 學位類別： |
碩士 Master |
| 系所名稱： |
工學院 - 土木工程學系 Department of Civil Engineering |
| 畢業學年度： | 90 |
| 語文別： | 中文 |
| 論文頁數： | 96 |
| 中文關鍵詞： | 沖刷坑 、尾檻 、護坦 、局部沖刷 |
| 外文關鍵詞： | sills, aprons, local scour, scour hole |
| 相關次數： | 點閱：11 下載：0 |
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一般下游底床會有設置護坦和尾檻的保護工設施，以防止底床的嚴重淘刷。本研究通過清水流渠槽試驗，控制在一固定之流量及閘門開口下，改變兩種不同的粒徑，分別比較邊牆射流、邊牆射流護坦保護工及邊牆射流尾檻保護工等三種不同的試驗模型在深、淺尾水流況下，探討沖刷坑的沖刷機制與型態。且利用理論分析配合實驗結果，建立沖刷坑特徵尺度(最大沖刷深度、最大堆積丘高度、最大刷深位置、沖刷坑長、和基礎趾處刷深)預測模式，可用於推估並比較護坦保護工和尾檻保護工下游端之沖刷坑。以期能進一步瞭解保護工在邊牆射流作用下，下游河床之互制作用，達到最佳保護水工結構物設計之參考。
Aprons and sills are the common countermeasures for protecting the downstream riverbed. In this study the local scour behavior downstream of aprons and sills are examined by employing laboratory experiments. The scour characteristics of two homogeneous sand beds caused by the wall jet, the wall jet with apron, and the wall jet with end sill, are compared. By using theory and experimental data, a prediction model is developed, and is used to explore the characteristics of local scour near those structures.
李祈宏，「砂礫河床之跌水沖刷分析」，碩士論文，國立中央大學土木工程研究所，中壢(2000)。
呂習堯，「邊牆射流及尾檻對砂質底床之沖刷研究」，碩士論文，國立中央大學土木工程研究所，中壢(2001)。
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