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題 名 | 改良型舟通式魚道阻流材角度與流速試驗研究=An Experimental Study of the Flowrate and the Angle of Blocking Pieces in the Modified Boat-Passage Fishway |
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作 者 | 陳有祺; 陳囿任; | 書刊名 | 中華建築學刊 |
卷 期 | 3:1 2007.05[民96.05] |
頁 次 | 頁15-22 |
分類號 | 434.287 |
關鍵詞 | 改良型舟通式魚道; 阻流材; 流速; Modified boat-passage fishway; Blocking pieces; Flowratec; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以水工模型作試驗,藉由改變改良型舟通式魚道之阻流材角度 (θ=30°、θ=45°、θ=60°),在不同坡度 (S=1/8、S=1/10) 與流量 (Q=0.016cms、Q=0.032cms、Q=0.048cms) 下,量測流速及水深以觀測水理變化。試驗結果顯示,阻流材主幹上方無阻水設施,其平均流速為1.883m/s,而通行區之平均流速0.863m/s,二者之平均流速相差1.020m/s,有利於不同溯游速度的魚類使用;另外,休息區受阻水箱影響產生洄流之現象,平均流速在0.296m/s~0.027m/s之間,讓魚類在上溯途經中恢復體力及溯游之突進加速,更有利於小型魚及仔魚通過。本研究之魚道有不同之流速變化,可配合當地河川特性及魚類溯游習性,作為未來設計改良型舟通式魚道之參考。 |
英文摘要 | This research uses the hydraulic model as an experimental tool. In different slopes (S=1/8、S=1/10), flow rates (Q=0.016cms、Q=0.032cms、Q=0.048cms), and the angles (θ=30°、θ=45°、θ=60°) of blocking pieces in the modified boat-passage fishway, the velocity and depth were measured. The results of experiment show that the average velocities of the area above the central blocking piece and area of migration passage are 1.883m/s and 0.863m/s, respectively. The velocity difference of these two areas is 1.020m/s, which is suitable for the migration of many kinds of fish with diffent swimming ability. In addition, the velocity of the rest area which is affected by the back flow, lies between 0.296m/s to 0.027m/s that are not only suitable for fish's migration but also suitable for the small and young fish's swimming. The results of this experiment could be applied to cooperate with the characteristics of local rivers in the design of the modified boat-passage fishway. |
本系統中英文摘要資訊取自各篇刊載內容。