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

The utility model discloses a waterproof device for construction of a U-shaped aqueduct under the condition that water is not cut off, and relates to the technical field of aqueduct maintenance. The device comprises a water separation tank and a gate, the bottom of the water separation groove abuts against the U-shaped aqueduct. A rotating pin is arranged in the 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 groove; 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. The U-shaped aqueduct inner side wall structure and the water stop belt can be overhauled and maintained, and the U-shaped aqueduct inner side wall structure maintenance device is suitable for being used and popularized. 本实用新型公开了一种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