FLOAT TYPE RADIAL GATE FOR FISH WAY

摘要

PROBLEM TO BE SOLVED: To vertically move the overflow part of a radial gate door body functioning as an overflow part of the partition side of a fish way without any motive power to follow the variation of the water level by attaching a float to a float structure or the radial gate door body and simplify the external apperance structure and prevent foreign materials from jamming therein. SOLUTION: A radial gate 1 is arranged in the upstream side of a partition wall 3 formed in a fish way 2. A radial gate door body 4 is shaped in a float structure vertically moving to follow the variation of the water level. A lower part water-tight device 5 effectuating water tightness between the radial gate door body 4 projecting upward from the top end 3a of the partition wall while vertically moving and the partition wall 3 is provided and further, a side water- tight device 6 effectuating water-tightness between both right and left side ends of the radial gate door body 4 projecting upward from the top end 3a of the partition wall while vertically moving and the fish way 2 is provided. A door body overflow part 4a functioning as the partition wall side overflow part is provided at the upper end side of the vertically moving radial gate door body 4.