| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water passage opening part switchgear capable of reducing even maintenance more than usual with a simple structure.SOLUTION: A vertically freely movable gate wall 4 is provided on the river or sea area side of a water passage opening part 2, and its gate wall 4 is provided with the water passage opening part 10 for releasing the water passage opening part 2 to the river or sea area side and a water passage closing part 11 for closing the water passage opening part in vertically adjacent arrangement, and is provided with a floating body 15 for vertically moving in response to a variation in a water level on the river or sea area side, and automatically opens-closes the water passage opening part 2 by vertically moving the gate wall 4 by vertical operation of the floating body 15 corresponding to the vertical movement of the river or sea area side water level.</p> |
