FIELD: ecology; construction.
SUBSTANCE: invention relates to hydrotechnical structures designed for enclosing of water surface section in order to prevent spreading of oil and oil products. Boom with variable buoyancy includes a flexible pipe (1), attached along steel rope (2) fixed on opposite river banks. One end of pipe is leaky and communicated with water weight of river. Other end is plugged and is equipped with nozzle, which is connected to air-vacuum pump (5) via hose (4). In cavity of tube (1) is sealing piston from elastic material, fully covering internal section of pipe. At that, pipe along whole length is provided with two rows of comb-like elastic elements outside in its upper part, and in lower part is with one row of such elements.
EFFECT: simplified design and higher reliability.
7 cl, 2 dwg
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