| 摘要 |
A method of construction purifying the river water stored in the reservoir water space is provided to purify the stored river water to clean water by ejecting the lower layer water of the reservoir water space preferentially and by discharging the contaminant like the laminated accumulated sludge in the lower layer. In a method of construction purifying the river water stored in the reservoir water space, a floor foundation is comprised in river; a bank(2) is built in the river either side; a submerged weir(3) is set up across bank to form reservoir water space; a discharge passage(4) is set up to the constant interval be separated from the lower part of water storage side from the top end portion of submerged weir; an opening and closing door(6) having the axis of rotary shaft(5) in the bottom part and having the area at least protecting the entrance of the exhaust path is prepared; the axis of rotation which is rotatable is fixed to the either side bank; a driving device is connected with the axis of rotation; the clean bottom water in which the specific gravity stored in the reservoir water space is heavy ejected preferentially by opening an closing the exhaust path according to the water level of the reservoir water space. |
