| 摘要 |
PURPOSE: A multi-step floodgate is provided to prevent damages due to strong wind, fully show functions and enable installation and maintenance by preventing a floodgate from rising to over 10-15cm when the floodgate is completely opened. CONSTITUTION: A multi-step floodgate comprises a plurality of grooves(88), a plurality of floodgates, and an opening/closing device. The grooves are stepwise installed on pier(65) to be able to be vertically opened/closed to a depth independent respectively from upper end every waterway according to the depth of water. The floodgates are manufactured as a given scale. The floodgates are formed in such a manner that both surface of a frame are finished with panels, pulleys are bound to four corners, and a protrusion(96) is attached to upper and lower ends or a upper or lower end. |
