| 摘要 |
PURPOSE: An apparatus for preventing the inflow of soil and sand of a fish place by using buoyancy is provided to prevent soil and sand from being flowed into a fish place by automatically raising a soil inflow prevention membrane with the buoyancy in the rainy season and to execute the fish place function in the dry season. CONSTITUTION: An apparatus for preventing the inflow of soil and sand of a fish place by using buoyancy is composed of a fish place, a soil inflow prevention membrane(20), a buoyancy tank(30), a buoyancy body(40), a lift(50), a pressure water pipe(60), and a drain pipe(70). The fish place is installed in the floor of a river to be near the lower part of a fishway. The soil inflow prevention membrane contains water on the bottom of the fish place to form the ecological space. The buoyancy tank is laid in the lower side of the fish place. The buoyancy body is installed to be movable vertically by passing a rod bar through the bottom of the buoyancy tank and the fish place. The lift selectively raises the soil inflow prevention membrane. The pressure water pipe supplies the upper water to a buoyancy chamber. The drain pipe drains the water of the buoyancy chamber to the outside. |
