| 摘要 |
PROBLEM TO BE SOLVED: To prevent a clearance from being formed between a door body in a mooring state and a storage part of the door body.SOLUTION: A mooring hook 15 of a seabed installation-type flap gate 11 is provided at an engaging position with a gate mooring part 12a attached to the tip side of a door body 12 moored in the state of obtaining buoyancy in a storage part 13. A cover 16 blocking a clearance 17 formed between the tip side part of the door body 12 in the mooring state and the storage part 13 is connected to the mooring hook 15 via a link 18, so that the link 18 pushes up the cover 16 to open the clearance 17 along with release of mooring by the mooring hook 15 when the door body 12 is erected. Because the clearance formed between the tip side part of the door body in the mooring state and the storage part of the door body can be effectively covered, the inflow of sediment and dirt into the storage part of the door body can be suppressed. Moreover, swinging of the door body in a falling state due to the effects of waves or a marine vessel passing immediately above the door body can be suppressed. |
