| 研究生: |
蘇俞銘 Su, Yu-Ming |
|---|---|
| 論文名稱: |
成功筐網導流效應對底床變化之現地試驗 Field experiment of bed variation affected by flow diversion with Cheng-Kung Porous Basket |
| 指導教授: |
黃進坤
Huang, Chin-Kun |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 水利及海洋工程學系 Department of Hydraulic & Ocean Engineering |
| 論文出版年: | 2012 |
| 畢業學年度: | 100 |
| 語文別: | 中文 |
| 論文頁數: | 155 |
| 中文關鍵詞: | 成功筐網 、現地實驗 、地形變動 |
| 外文關鍵詞: | CKPB, field experiment, bed variation |
| 相關次數: | 點閱:71 下載:2 |
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本文研究單排「成功筐網(CKPB)」導流工法於現地動床實驗對於泥砂促淤、砂丘的發展、水流的導引之效果,期待能藉此提供現地施工建造筐網圓柱構造物最佳泥砂促淤效果之設置條件。
本文實驗地點位於高屏溪斜張橋下游河段,採用10支筐網圓柱構造物做為實驗模型,經由改變筐網圓柱間之距離、筐網圓柱群與水流的夾角、筐網圓柱的高度,於各個時間點量測河床地形高層,分別討論(1)各組別不同時間河床地形變化、(2)相同筐網圓柱高度不同設置距離之河床地形變動、(3)潛沒狀態下筐網群對於淤積效果的影響、(4)相同設置距離不同筐網圓柱高度之淤積量變化、(5)不同條件下筐網群對於導流效果之影響。
根據實驗結果得知,筐網圓柱圓心之間間隔2倍筐網直徑、筐網圓柱群與水流夾角為30度之設置條件下,所的到的淤積帶大小、淤積高度最為顯著,對於水流影響最明顯,導引水流能力相較於其他各組設置條件,明顯的優異許多,此時淤積丘最高點形成於末支筐網圓柱的下游處。
This study have been carried out in Kaoping river to investigate sediment depostion, the development of the dunes, and flow diversion effect by Cheng-Kung Porous Basket (CKPB), looking forward to provide the best set up conditions that promoting sediment deposition when constructed the porous cylinders in river.
This study use ten porous cylinders as experimental models, measured the river bed topography at each time point by change the set distance, the angle between flow and porous cylinder group, and the height of porous cylinders, discussed (1) river bed topography different between each groups, (2) the same height of the porous cylinders but different setting distance, (3) when porous cylinders group was submerged, (4) the same setting distance between each porous cylinder but different height, and (5) the flow diversion effect by porous cylinders group at different set up conditions.
According to the results, the interval between each cylinder center of the circle 2 times the diameter of the porous cylinder, and the setting angle between flow and porous cylinder group is 30 degrees, we can get the best efficacy of sediment deposition.
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