隔壁に擬岩を用いた急勾配魚道の提案
キーワード:
Steep slope fishway,
Artificial rock,
Hydraulic model experiment,
Swimming fish,
Benthic fish,
Crab
2008 年 14 巻 p. 457-462
詳細
2008 年 14 巻 p. 457-462
In many cases of weir in Japan, it might be difficult to install long fishway, and the fishway with a steep slope should be required. In accordance with a design manual of fishway, 1/10 slope is recommended for the upstream migration of swimming fishes.
In this report, a pool type fishway with artificial rocks in 1/5 steep slope has been proposed. The flow condition in the proposed fishway has been made clear. The velocity field in the pool has also been characterized. By using swimming fish, benthic fish, and crab, the migration route in the proposed fishway has been discussed.
