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| 題 名 | Application of Burst Swimming Speeds of Fishes on Determination of Water Head Difference in Pool-Weir Fishway Design=魚類突進泳速於階段式魚道隔板水位差設計之應用 |
|---|---|
| 作 者 | 葉明峰; 何權浤; 李明安; | 書刊名 | 臺灣水產學會刊 |
| 卷 期 | 38:2 2011.06[民100.06] |
| 頁 次 | 頁155-160 |
| 分類號 | 434.287 |
| 關鍵詞 | 魚類游泳能力; 臺灣石[魚賓]; 臺灣鏟頷魚; 階段式魚道; 臺灣; Fish swimming performance; Acrossocheilus paradoxus; Varicorhinus barbatulus; Pool-weir fishway; Taiwan; |
| 語 文 | 英文(English) |
| 中文摘要 | 魚類能否利用階段式魚道順利上溯與隔板水位差(Δh)大小有關,本研究以室內水槽試驗所獲之魚類最大突進泳速(hUburst),探討階段式魚道隔板水位差與潛孔流速(Vo)之設計上限。先前試驗結果示,台灣石魚賓(Acrossocheilus paradoxus)與台灣鏟頷魚(Varicorhinus barbatulus)的最大突進泳速分別為1.63 m/sec 與1.74 m/sec,若以此為魚類上溯必需克服之水流落下流速(V2)設計參考上限值,當隔板之越流水深(h)為1 cm時,隔板水位差設計上限分別為13.21 cm與15.10 cm。由於溪流中魚道隔板表面與水流摩擦力的影響,使實際之水流落下流速較理論值稍低,致以台灣石魚賓與台灣鏟頷魚最大突進泳速推估之隔板水位差上限值分別較魚道現地溯游試驗50%成功上溯率的13.8 cm與17.4 cm略低。階段式魚道較適合的隔板越流水深約在1~3 cm間,因潛孔流速理論值皆較落下流速為低,當魚類發揮最大突進泳速溯游時,若可克服水流落下流速越過隔板,其即有能力穿越隔板底部之潛孔成功上溯。 |
| 英文摘要 | The highest burst swimming speed (hUburst) of fish obtained from water tunnel experiment can be used to calculate water head difference (Δh) and submerged orifice water velocity (Vo) for the pool-weir fishway design. We used the hUburst of 1.63 m/sec of Acrossocheilus paradoxus and 1.74 m/sec of Varicorhinus barbatulus obtained in our previous study as the water fall velocity (V2) of the fishway to calculate the Δh to be 13.21 cm and 15.10 cm, respectively, for the two species at the overflow depth (h) of 1 cm. They were slightly lower than 13.8 cm and 17.4 cm of the Δh for 50% fish passage reported by the fishway experiment. Because there is a friction of water fall on the surface of weir, V2 of the water fall is lower than that calculated from the Δh and the gravity alone. Therefore, the Δh calculated from the hburst may be used directly as the water head difference in the fishway design. The proper overflow depth was suggested to be at h=1 to 3 cm. As the hUburst was found to be faster than Vo at any of the h, as long as a fish can ascend water falls of the fishway, the fish is also able to swim through its submerged orifice. |
本系統中英文摘要資訊取自各篇刊載內容。