| 摘要 |
The present invention relates to a tube floodgate of a dam which is capable of opening and closing a dam spillway and, more specifically, to a tube floodgate which comprises: chambers formed on dams of both sides of the spillway to discharge extra water when water exceeds a certain amount; support shafts which are placed inside the chambers and which have the lower parts fixed on the bottom surfaces of the dams; multiple guide pieces combined with the tube floodgate for opening and closing the dam spillway and with both shafts; a compressor which has an air supply pipe connected to the bottom part of the tube floodgate and an air tank connected thereto so that compressed air is supplied to the tube flood gate and expanded inside the tube floodgate to close the spillway or removed from the tube floodgate to contract the tube flood gate to open the spillway; a height-adjusting unit for adjusting the height of the flood gate which is expanded or contracted by the air supplied from the air tank; protectors which are combined with one side of the tube floodgate, which come in contact with stored water and which distribute water pressure to support the water pressure to stabilize the tube floodgate; and a protector connection unit which makes the protectors unfolded to come in contact with water when the tube floodgate is expanded, or folded successively when the tube floodgate is contracted. |
