Waterproof device for construction of U-shaped aqueduct under condition of no water cut-off

The invention discloses a waterproof device for construction of a U-shaped aqueduct under the condition of no water cut-off, and relates to the technical field of aqueduct maintenance. The device comprises a water separation tank and a gate, wherein the bottom of the water separation tank abuts against the U-shaped aqueduct, a rotating pin is arranged in a rotating sleeve, when the gate is in contact with the U-shaped aqueduct, a construction space is formed among the U-shaped aqueduct, the gate and the outer side of the water separation tank, and sealing devices are arranged at the bottom of the water separation tank and the contact part of the gate and the U-shaped aqueduct. According to the waterproof device, the U-shaped aqueduct inner side wall structure and the water stop belt can be overhauled and maintained, and the device is suitable for application and popularization. 本发明公开了一种U型渡槽不断水条件下的施工用隔水装置，涉及渡槽维修技术领域。它包括隔水槽，闸门；隔水槽底部与U型渡槽抵靠；转动套内有转动销；当闸门与U型渡槽接触时，U型渡槽、闸门和隔水槽的外侧之间形成施工空间；隔水槽底部和闸门与U型渡槽的接触处均设置有密封装置。本发