Method for observing and isolating wave transmission prototypes of breakwater

Abstract

The invention relates to a method for observing and isolating wave prototypes of breakwater. The method comprises the following steps: S1, respectively setting wave measurement instruments at the inner side and the outer side of the breakwater, wherein the wave measurement instruments are used for observing direction spectra of waves; S2, determining direction distribution of the waves according to actually measured direction spectra and a frequency spectrum; S3, distinguishing the waves in different propagation directions according to the direction spectra; S4, obtaining the magnitude of waveenergy in all directions according to integration of a distribution range of the waves in different directions; S5, determining a transmission coefficient of the breakwater according to the directions and the magnitude of incident waves in measure points at the outer side of the breakwater. The method disclosed by the invention is capable of observing and isolating the transmission waves of the breakwater on the scene, the wave transmission characteristic of actual breakwater can be conveniently determined, and a great significance in breakwater design research in port engineering is obtained.

Description

technical field [0001] The invention relates to a prototype observation and separation method for wave penetration, and more specifically, to a prototype observation and separation method for breakwater penetration waves. Background technique [0002] The riprap breakwater, which is widely used in port engineering, is a porous medium structure that can penetrate waves. It is mainly composed of bulk materials such as block stones, and is protected by a protective layer with strong wave resistance. For this kind of permeable slope-type breakwater, the long-period wave can propagate through the embankment body. Although the transmitted wave height is small, due to its long wavelength, its impact on the berthing stability in the port is greater and cannot be ignored. Moreover, embankment core stones with different sizes have different damping effects on wave propagation, resulting in large differences in the waves transmitted behind the embankment. [0003] However, since the w...

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Problems solved by technology

For this kind of permeable slope breakwater, the long-period wave can propagate through the embankment body. Although the transmitted wave height is small, due to its long wavelength, it has a great impact on the stability of mooring in the port, which cannot be ignored.

Moreover, embankment core stones of different sizes have different damping effects on wave propagation, which makes the waves transmitted behind the embankment quite different.

[0003] However, since the waves behind the breakwater in actual port engineering often include the transmitted wave of the breakwater, the diffracted wave after the wave passes through the port gate or embankment, and the reflected wave of the buildings in the port, how to observe and separate the transmitted wave of the breakwater on site becomes Important Issues in Determining Wave Penetration Characteristics of Actual Breakwaters

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