Suction bucket underwater pile-driving noise-reduction device and construction method thereof

Abstract

The invention provides a suction bucket underwater pile-driving noise-reduction device and a construction method thereof. The suction bucket underwater pile-driving noise-reduction device comprises afloating ring base floated on the water surface, a suction bucket device inserted into subaqueous soil, a first noise-reduction net surrounding the periphery of a pile body, and a second noise-reduction net surrounding the outer side of the first noise-reduction net, wherein the floating ring base surrounds the periphery of the pile body; the suction bucket device surrounds the periphery of the pile body and is connected with the outer wall of the pile body in a sealing way; the upper end of the first noise-reduction net is connected with the floating ring base; the lower end of the first noise-reduction net is connected with the suction bucket device; the upper end of the second noise-reduction net is connected with the water surface floating ring base; the lower end of the second noise-reduction net is a free end; and during pile-driving operation, the second noise-reduction net is suspended under the water surface in an umbrella shape. According to the suction bucket underwater pile-driving noise-reduction device and the construction method thereof provided by the invention, through a first fixed-form noise-reduction block on the first noise-reduction nut, an effect on sufficiently reducing noise can be achieved; the second noise-reduction net is suspended under the water surface in the umbrella shape so as to carry out secondary noise reduction, so that the transmission ofacoustic wave from bottom to top is restrained; and through arranging the suction bucket device, the noise at a water-soil interface part in the pile-driving process is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of underwater piling noise reduction for offshore wind turbines, in particular to a suction bucket type underwater piling noise reduction device and a construction method thereof. Background technique [0002] In recent years, with the rapid development of society and the increasing tension of energy, for the sustainable development of social economy and environment, people gradually turn more attention to sustainable energy. Among them, the huge wind power benefits contained in the ocean attract people's attention its development and utilization. The development and construction of offshore wind farms has increasingly become an important part of the energy landscape of various countries. But inevitably, the construction and operation of offshore projects will generate various types of noise pollution to the marine environment. [0003] An underwater noise reduction device HSD (Hydro Sound Dampers, HSD for...

AI Technical Summary

Problems solved by technology

[0004] However, the balloons in HSD are all smooth balloons, which do not achieve the optimal effect in terms of noise reduction

And in the design of the noise reduction network, the distribution of noise and the extremely large noise emitted at the water-soil interface are not considered

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