The present invention relates to a round radial movable weir, in which a mounting space is dented in structures provided on both wall surfaces of a waterway, protruding rotary shafts are respectively supported on both sides of a gate in the mounting space, a cylinder is connected to both side surfaces of the gate in which both ends are inserted into the mounting space to be mounted thereon at a predetermined depth so that the gate is installed to be rotated around the rotary shafts, and a storage hole is provided on a floor surface of the waterway so that the gate blocks flow of a flow path in case of upward rotation and an upper surface is substantially maintained in parallel with the floor surface in case of downward rotation.;COPYRIGHT KIPO 2020
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