FIELD: hydraulic engineering; applicable in repair of hydraulic structures with pile design. SUBSTANCE: the offered device includes working chamber in form of water-impermeable assembled sectional framework with load carrying working platform and posts for fastening the upper portion of structure, device for water withdrawal from the working chamber and floating members. During repair of underwater part of hydraulic structure consisting of paired piles, assembled sectional framework is formed of two opening halves made in plan of semicircle provided with spacers hinged from one side to semicircle for filling the space between piles with full sealing of joints between them and sections of framework. Framework is separated into compartments in height. Working chamber has removable sealing collar corresponding to the shape of piles located below the working platform, appliance for air supply made in form of ejector and installed in the lower compartment. Floating members are located over the entire periphery of the framework. Working platform is made of steel for withdrawal of water to the lower compartment of the working chamber - to ejector. EFFECT: higher efficiency. 3 dwg
