| 摘要 |
A fish ladder on an inclined river bottom is provided to remove foreign material deposited on a lower guide wall easily by opening an upper part. A fish ladder on an inclined river bottom comprises upper and lower parts(110,120). The lower part includes walls, lower guide walls(111), and a moving groove. The walls are attached to two side ends of the lower part. The lower guide walls are formed on the bottom of the lower part at regular intervals. The lower guide walls are curved toward an outlet(172). The moving grooves are between the guide walls to help the fish to move. Mounted on the lower part, the upper part has upper guide walls(121) protruding regularly. Upper, lower and intermediate paths are formed between the upper and lower guide walls. The upper guide walls are curved toward an inlet(171). Coming through the inlet, water fills the upper, lower and intermediate paths, and runs down slowly such that fish swim upstream easily. The upper part can be opened to remove deposit at the lower guide walls. |
