TW201730409A - Structure for attenuating wave overtopping, breakwater structure having the same, and method for attenuating wave overtopping using the same - Google Patents

Abstract

Disclosed are a breakwater structure, a wave overtopping energy attenuation device, and an attenuation device for wave overtopping energy, capable of minimizing damage due to wave overtopping energy by attenuating the wave overtopping energy. According to the present invention, the breakwater structure includes: a foundation ground installed on a seabed; a unit structure having a block upper plate and a block lower plate formed with the same size in a rectangular or square shape and at least a column supporting the block upper plate on the block lower plate, wherein at least a through hole is formed on each of the block upper plate and the block lower plate; a front breakwater wall formed by stacking the multiple unit structures on a side toward open ocean on the foundation ground; a rear breakwater wall formed by stacking the unit structures on the side toward inland sea on the foundation ground, wherein the rear breakwater wall is separated from the front breakwater wall in a predetermined distance or more; and a wave overtopping attenuation layer including multiple wave overtopping attenuation plates and multiple support columns supporting each of the wave overtopping attenuation plates in order for the each of the wave overtopping attenuation plate to have at least one among a predetermined angle and a predetermined interval on a reference surface.

Description

Structure for over-wave attenuation, breakwater structure having the same, and over-wave attenuation using the same law

The present invention relates to a structure for a wave attenuation structure capable of attenuating over-waves with respect to a breakwater and minimizing the resulting disaster, and a breakwater structure including the same.

In general, a harbor or a coast is almost always equipped with a breakwater.

The initial breakwater is provided to block waves of a certain height, and the section in which the breakwater is installed is blocked in the inland sea and the outer sea. However, in the case of constructing a breakwater in such a manner as to trap seawater, the inflow and outflow of seawater cannot be smoothly performed, which causes the seawater on the inland sea side to be contaminated, which not only causes accumulation of various pollutants, but in severe cases even It will produce stench. Therefore, even if the tidal flat or the seabed ecology on the inner sea side is completely destroyed, it cannot be overestimated.

For this reason, the most recent breakwaters are set up by a variety of construction methods to minimize the disasters on the inland side caused by wave energy and to make seawater between the outer and inner seas. Inflow and outflow are smooth.

On the other hand, when seawater collides with the breakwater, the seawater generates a large rebound force, and the subsequent seawater is combined with it, and the breakwater is hit with greater energy. At this time, if the height of the breakwater is high, the energy generated by such a repulsive force is a cause of damage to the breakwater. If the height of the breakwater is low, the wave that bounces upward due to the rebound force passes over the breakwater, thereby forming a wave. Here, the over-wave refers to a phenomenon in which a wave that rises upward after hitting the breakwater passes over the top of the breakwater.

In order to minimize the disaster on the inland sea caused by waves and reduce its own damage, the breakwater needs to allow a certain degree of over-wave, but the more waves are caused by the collision with the breakwater. It has a large amount of energy, so in order to reduce the disaster caused by the over-wave, it is necessary to attenuate the energy of the over-wave.

Patent Document 1: Korean Laid-Open Patent Publication No. 10-2004-0006610 (published on January 24, 2004).

An object of the present invention is to provide a structure for a wave attenuation structure capable of minimizing a disaster caused by attenuating the energy of a wave, and a breakwater structure including the same.

Another object of the present invention is to provide a method for attenuating over-waves using a structure for over-wave attenuation.

In order to achieve the above object, the present invention provides a structure for over-wave attenuation, comprising: a plurality of over-wave attenuation plates disposed on an upper side of the breakwater adjacent to the outer sea side, and separated from each other at a predetermined interval to form a plurality of layers to ensure over crossing a space through which the seawater can pass; and a plurality of support columns disposed on the upper surface of the breakwater to support the over-wave attenuation plate such that the plurality of wave-attenuation plates are spaced apart from each other.

According to a feature of the invention, the plurality of over-wave attenuation plates can be arranged to be parallel in the horizontal direction.

According to another feature of the present invention, the plurality of over-wave attenuation plates may be disposed to be inclined from a direction of the outer sea side toward a direction of the inner sea side. In this case, the plurality of over-wave attenuation plates may be arranged to be all parallel or have different inclinations, respectively.

According to another feature of the invention, the plurality of over-wave attenuating plates may be arranged such that the inclination of the over-wave attenuating plate increases as moving from the lower layer toward the upper layer.

According to another feature of the present invention, the plurality of support columns may be adjusted in length. In this case, the wave-wave attenuation structure may further include: an energy measuring device for measuring wave energy; and a length control device capable of being based on the above The value measured by the energy measuring device controls the length of the plurality of support columns to adjust the angle of the over-wave attenuation plate.

According to another feature of the present invention, the overshooting guide plate may be further included, the cavitation guide plate being coupled downwardly to one end of the at least one of the plurality of over-wave attenuating plates, having an inclination of the over-wave attenuating plate The inclination is large, whereby the seawater passing through the space between the above-mentioned wave attenuating plates is led to the lower side of the inner side of the breakwater.

According to another feature of the invention, the wave-attenuation structure may further include an auxiliary guide plate that is vertically disposed at an end of the over-wave guide plate in a downward direction.

In addition, in order to achieve the above object, the present invention also provides a breakwater structure, comprising: a foundation base disposed on the sea floor; a breakwater wall disposed on the base substrate; and a wave attenuating structure disposed on the breakwater wall Upper surface. Wherein, the above-mentioned over-wave attenuation structure may further include an over-wave guide plate connected to one end of at least one of the plurality of over-wave attenuation plates in a downward direction, having an inclination of the over-wave attenuation plate The inclination is large, whereby the seawater passing through the space between the above-mentioned wave attenuating plates is led to the lower side of the inner wall of the breakwater wall.

Further, the breakwater wall may include a front breakwater wall, a side facing the outer sea formed on the base substrate by laminating a plurality of unit structures, and a rear breakwater wall formed by laminating a plurality of the unit structures. a side of the foundation substrate facing the inner sea and separated from the front breakwater wall by a predetermined distance, and the wave-attenuation structure may further include an over-wave guide plate connected to the plurality of the wave-guide sheets downwardly One end of at least one of the over-wave attenuating plates has an inclination greater than the inclination of the over-wave attenuating plate, thereby guiding seawater passing through the space between the over-wave attenuating plates to the inner side of the rear breakwater wall Below or lead to the space between the front breakwater wall and the rear breakwater wall.

In addition, in order to achieve the above object, the present invention provides a wave attenuation method comprising: step (a), classifying the range of wave energy into a plurality of stages, and matching the angles of the above-mentioned over-wave attenuation plates corresponding to the respective stages and storing; b) measuring wave energy; step (c), determining whether the measured value of the wave energy corresponds to which of the stages in the step (a); and the step (d) of controlling the plurality of support columns The length of the over-wave attenuating plate is adjusted to correspond to the stage determined in the above step (c), and the crossed seawater is directed to the lower side of the inner bank of the breakwater.

In the above step (d), the larger the value of the wave energy measured in the step (b), the smaller the inclination of each of the plurality of over-wave attenuating plates may be, so that the support column may be controlled. length.

According to the present invention, by providing the over-wave attenuation structure on the upper side of the breakwater, it is possible to reduce the disaster on the inland sea caused by the over-wave, and in particular to attenuate the over-wave by the over-wave attenuation structure. The energy of the energy can also be converted into the inner side and the lower side, so that the disaster caused by the over-wave can be minimized.

Further, according to the present invention, when the breakwater is already provided, only the wave-wave attenuation structure is separately provided, and the disaster of over-wave can be reduced, so that the cost reduction effect can be obtained.

100‧‧‧ breakwater structure

110‧‧‧Basic base

120‧‧‧Unit structure

130‧‧‧Basic breakwater wall

140‧‧‧Front breakwater wall

150‧‧‧ rear breakwater wall

160‧‧‧ cover

170‧‧‧Wave wave attenuation structure

172‧‧‧A wave attenuation board

174‧‧‧Support column

180‧‧‧Energy measuring device

190‧‧‧ Length control device

Fig. 1 is a side view of a breakwater structure according to an embodiment of the present invention.

Figure 2 is a perspective view of the breakwater structure of Figure 1.

Fig. 3 is a perspective view showing an example of a unit structure to which the breakwater structure shown in Fig. 1 is applied.

4 to 7 are views showing several examples of the structure for over-wave attenuation according to the present invention.

Figure 8 is a side cross-sectional view showing a breakwater structure according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are merely intended to enable a person skilled in the art to readily understand the present invention, and the scope of the present invention is not limited thereto. Further, in the course of explaining several embodiments of the present invention, the same reference numerals are used for constituent elements having the same technical features.

1 is a side cross-sectional view showing a breakwater structure according to an embodiment of the present invention, FIG. 2 is a perspective view of the breakwater structure shown in FIG. 1, and FIG. 3 is a view showing a unit structure to which the breakwater structure shown in FIG. A perspective view of an example, and FIGS. 4 to 7 are views showing several embodiments of the structure for over-wave attenuation according to the present invention.

Referring to FIGS. 1 and 2, a breakwater structure 100 according to an embodiment of the present invention includes a base substrate 110, a breakwater wall, and an over-wave attenuation structure 170. Among them, the breakwater wall may be formed by laminating the unit structure 120, and may be configured by a structure including the front breakwater wall 140 and the rear breakwater wall 150 or a structure including the base breakwater wall 130. Additionally, the breakwater structure may further include a cover layer 160.

The foundation substrate 110 is placed on the sea floor, and the foundation substrate 110 is constructed by a foundation construction method on the bottom surface of the sea floor. The foundation base 110 can be set after the bottom surface of the sea bottom is dug out a groove of a predetermined depth. The upper surface of the base substrate 110 is flattened by placing a lower-length fixed core 112 of a predetermined length on the bottom surface of the base substrate 110 and inserting the lower fixed core 112 into the sea floor to fix the base substrate 110 to the sea floor. The shape and setting method of the base substrate 110 are not particularly limited, and various shapes and methods that can be generally used can be applied. Further, the base substrate 110 may be made of concrete, but is not limited thereto, and various materials may be used.

The breakwater wall can be applied to all of the structures normally used for breakwater structures. Further, the unit structure 120 shown in FIGS. 1 to 3 may be laminated to form a breakwater wall.

Referring to FIG. 3, the unit structural body 120 includes a block upper plate 121, a block lower plate 122, and at least one pillar 123 supporting the block upper plate 121 on the block lower plate 122, a block upper plate 121 and a block lower plate. 122 are respectively provided with at least one through hole 124. At this time, the block upper plate 121 and the block lower plate 122 may be formed to have the same size. The block upper plate 121 and the block lower plate 122 may each be formed of a rectangular shape in which the length of one side is n times the length of the other side (where n is an integer of 2 or more). At this time, the block-shaped upper plate 121 and the block-shaped lower plate 122 are formed to have the same size, which means that the respective horizontal lengths and longitudinal lengths are the same, and the respective thicknesses can be formed to be different. Further, the block upper plate 121 and the block lower plate 122 may each be formed in a square shape. At this time, at a position 1/2 of each side, a connection groove 125 having a set depth and a set length may be formed from the side in the vertical direction.

Further, the unit structure 120 may further include at least one intermediate plate 126. At this time, the intermediate plate 126 is formed in the same size and shape as the block upper plate 121 and the block lower plate 122, and is disposed in parallel between the block upper plate 121 and the block lower plate 122, and is supported by the support 123. .

The block upper plate 121, the block lower plate 122, and the intermediate plate 126 are cut into a cylindrical state as follows: at least one of the apex of each corner and the 1/2 position of the side twice the length is The center sets the cylindrical state of the diameter. That is, in the case where one side of the block upper plate 121, the block lower plate 122, and the intermediate plate 126 is twice the other side, the apex of each corner and the 1/2 position of the side having twice the length are formed. Cylindrical groove.

As described above, the breakwater wall may be configured by a structure including the front breakwater wall 140 and the rear breakwater wall 150 or a structure including the base breakwater wall 130.

Among them, the base breakwater wall 130 is formed by laminating a plurality of unit structures 120 on the upper surface of the base substrate 110. At this time, the plurality of unit structures 120 may be arranged in such a manner as to overlap half in the longitudinal direction, or half of the length direction and the short side of at least one other unit structure 120, as in the case of building a building by bricklaying. The directions are overlapped to form one After the layers, such layers are stacked a plurality to form the basic breakwater wall 130.

The front breakwater wall 140 is formed by laminating a plurality of unit structures 120 on the side of the base substrate 110 facing the outer sea. At this time, the front breakwater wall 140 may be formed on the side of the upper surface of the base breakwater wall 130 facing the outer sea after the base breakwater wall 130 is constructed on the upper surface of the base foundation 110. At this time, the front breakwater wall 140 may be formed on the outer sea side of the upper surface of the base breakwater wall 130 with a width smaller than 1/2 of the width of the base breakwater wall 130.

The rear breakwater wall 150 is formed by laminating a plurality of unit structures 120 on the side facing the inland sea above the base substrate 110. At this time, the rear breakwater wall 150 may be formed to be separated from the front breakwater wall 140 by a distance or more. In other words, the rear breakwater wall 150 is stacked so as to form a space equal to or larger than the set width between the front breakwater wall 140. Further, as in the case of the front breakwater wall 140, the rear breakwater wall 150 may be formed on the base breakwater wall so as to be separated from the front breakwater wall 140 by a predetermined distance or more after the base breakwater wall 130 is constructed on the upper surface of the base foundation 110. The side of the upper surface of 130 that faces the inner sea. At this time, the rear breakwater wall 150 may be formed on the inner sea side of the upper surface of the base breakwater wall 130 with a width smaller than 1/2 of the width of the base breakwater wall 130. For reference, FIGS. 1 and 2 show that the rear breakwater wall 150 is formed to have the same height as the front breakwater wall 140, but the rear breakwater wall 150 may be formed shorter or higher than the front breakwater wall 140.

The cover layer 160 is placed on the upper surfaces of the front breakwater wall 140 and the rear breakwater wall 150, and covers the front surface of the front breakwater wall 140 and the rear breakwater wall 150. The cover layer 160 prevents seawater from rising from the interior of the breakwater structure and can be used as a sidewalk and a motorway. The cap layer 160 may be made of a concrete material, but is not limited thereto, and various materials can be applied. For example, the cap layer 160 can be formed of a transparent acrylic plate having a predetermined thickness, whereby the flow of seawater inside the breakwater can be visually confirmed.

The over-wave attenuation structure 170 is provided on the upper surface of the portion of the breakwater adjacent to the outer sea side. For example, as shown in FIGS. 1 and 2, the over-wave attenuation structure 170 is provided on the upper surface of the front breakwater wall 140 adjacent to the outer sea side.

The over-wave attenuation structure 170 includes a plurality of over-wave attenuation plates 172 and a plurality of support columns 174, and may also include an over-wave guide plate 176.

The plurality of over-wave attenuation plates 172 are separated from each other at a predetermined interval to form a plurality of layers to ensure a space through which the crossed seawater can pass, and the plurality of support columns 174 are disposed on the upper surface of the breakwater wall. The plurality of over-wave attenuation plates 172 are supported to form a plurality of over-wave attenuation plates 172 to form a predetermined height difference.

At this time, as shown in FIG. 7, a plurality of over-wave attenuation plates 172 may be disposed to be parallel in the horizontal direction. On the other hand, the plurality of over-wave attenuating plates 172 may be disposed to be inclined from the direction of the outer sea side toward the inner sea side as shown in FIGS. 1 to 4 to 6 , and at this time, the plurality of over-wave attenuation plates 172 may be set to Parallel or have different inclinations. In addition, the plurality of over-wave attenuation plates 172 may also be arranged such that the inclination of each of the over-wave attenuation plates increases as moving from the lower layer toward the upper layer.

For example, as shown in FIG. 4, a plurality of over-wave attenuation plates 172 can be disposed to be inclined at the same angle at different heights. At this time, the plurality of support columns 174 may support the over-wave attenuation plate 172 such that the plurality of over-wave attenuation plates 172 have different heights with respect to the upper surface of the front breakwater wall 140 and are parallel to each other. At this time, the intervals between the over-wave attenuating plates 172 can be made the same or different.

Unlike this, as shown in FIGS. 5 and 6, the plurality of over-wave attenuation plates 172 can be disposed to be inclined at different angles at different heights. At this time, the plurality of support columns 174 may support the over-wave attenuation plate 172 such that the plurality of over-wave attenuation plates 172 have different heights with respect to the upper surface of the front breakwater wall 140 and are inclined at different angles from each other. At this time, the plurality of over-wave attenuation plates 172 may be disposed such that the inclination of each of the over-wave attenuation plates increases as moving from the lower layer toward the upper layer, whereby the inclination angle of the over-wave attenuation plate 172 disposed at the highest position is increased. The wave attenuating plate 172 may be formed of various materials such as metal, concrete, or synthetic resin.

Further, as shown in FIG. 7, a plurality of over-wave attenuation plates 172 may be disposed to be parallel to each other in the horizontal direction. At this time, the plurality of support columns 174 support the over-wave attenuation plate 172 such that the plurality of surge-attenuating plates 172 are parallel to each other in the horizontal direction at different heights with respect to the upper surface of the front breakwater wall 140.

The over-wave guide plate 176 is connected to one end of at least one of the plurality of over-wave attenuation plates 172 in a downward direction. At this time, the over-wave guide plate 176 has a larger inclination than the inclination of the over-wave attenuation plate 172, thereby guiding the seawater passing through the space between the attenuating plates 172 toward the lower side of the inner side of the breakwater.

That is, as shown in FIG. 8, the over-wave guide plate 176 is connected to one end of the plurality of over-wave attenuation plates 172, and the over-wave guide plate 176 has an inclination greater than the inclination of the over-wave attenuation plate 172. Thereby, the energy of the crossed seawater is first attenuated during the passage of the space between the over-wave attenuating plates 172, and the energy of the passing seawater and the over-wave guiding plate 176 is attenuated for the second time, due to the wave Since the guide plate 176 is inclined downward, it does not bounce in the opposite direction to the entry direction, but is guided in the inner side direction of the breakwater. For reference, as shown in FIG. 8, when the breakwater wall is constituted by the front breakwater wall 140 and the rear breakwater wall 150, the crossed seawater may be led to a space between the front breakwater wall 140 and the rear breakwater wall 150. In this process, the energy of the wave is significantly attenuated.

Although only the case where the over-wave guide plate 176 is connected to the over-wave attenuation plate 172 formed in parallel in the horizontal direction is shown in FIG. 8, the over-wave guide plate 176 can obviously be applied to the inclination as shown in FIGS. 4 to 6. The over-wave attenuation plate 172 will not be described again in order to avoid redundancy.

For reference, although not shown, an auxiliary guide plate that is vertically disposed to face downward may be connected to the end of the wave guide sheet 176. Thereby, the seawater guided by the over-wave guide plate 176 collides with the auxiliary guide plate again, and falls downward vertically.

Further, as shown in FIG. 9, the length adjustment of the plurality of support columns 174 can be performed in order to adjust the interval or inclination of the over-wave attenuation plate 172 by the length adjustment of the plurality of support columns 174. At this time, it can be realized by adjusting the length of the lowermost support column. Further, the length of the support column provided on the outer sea side of the plurality of support columns 174 can be adjusted to be larger than the support column provided on the inner sea side. At this time, when the length of each of the support columns 174 is adjusted, the adjustment length can be increased in proportion to the installation position toward the outer sea side. At this time, each of the support columns 174 may be rotatably coupled to each of the over-wave attenuation plates 172 for the reason that the angles of the respective wave-attenuating plates 172 and the support columns 174 are adjusted while adjusting the length of the lowermost support columns. Can be easily changed with it.

The breakwater structure 100 according to an embodiment of the present invention may further include an energy measuring device 180 and a length control device 190.

The energy measuring device 180 measures wave energy. At this time, the energy measuring device 180 can measure the strength of the force of the wave that collides with the breakwater. At this time, the energy measuring device 180 can measure the wave energy for the set time, select the largest value among the measured values, or calculate the average value of the wave energy measured according to the set time.

The length control device 190 controls the length of the support post, for example, the length of the lowermost support post 174 based on the value measured by the energy measuring device 180. At this time, the length control device 190 may classify the range of the wave energy into a plurality of stages, and match the respective stages of the over-wave attenuation board 172. Angle and store. At this time, the length control device 190 determines which phase of the wave energy measured by the energy measuring device 180 corresponds to, and controls the length of the lowermost support column 174 in accordance with the determined phase. At this time, the larger the value of the wave energy measured by the energy measuring device 180, the smaller the angle control device 190 controls the angle of the wave attenuating plate 172, and the smaller the wave attenuation structure 170 can be received from the wave energy. force.

The above-described over-wave attenuation structure 170, energy measuring device 180, and length control device 190 can be realized by a structure and an apparatus independent of the breakwater structure 100.

In the breakwater structure according to the embodiment of the present invention, the wave-attenuation structure 170 is provided at the upper end of the front breakwater wall 140 to weaken the energy of the seawater that has passed, and the seawater that has passed over is directed to the space on the rear side of the front breakwater wall 140. Therefore, the disaster on the inland side caused by the overshoot is minimized. Further, by adjusting the angle of the over-wave attenuation plate 172 according to the wave energy that collides with the breakwater structure, it is possible to minimize the amount of over-wave that exceeds the breakwater according to the magnitude of the wave energy.

Fig. 10 is a flowchart showing a method of a wave attenuation method according to an embodiment of the present invention.

Referring to Fig. 10, first, the range of wave energy is classified into a plurality of stages, and is stored corresponding to the angles of the classified stages of the over-wave attenuation board 172 (S110). At this time, as shown in FIGS. 5 and 6, in the case where the inclination angles of the respective wave attenuating plates 172 are different, the length adjusting device 190 can store the angle of the wave attenuating plate 172 corresponding to the highest position of each wave energy. .

Thereafter, the energy measuring device 180 measures the wave energy (S120). At this time, the energy measuring device 180 can measure the intensity of the force of the wave that collides with the breakwater at the set time interval, calculate the average value of the measured values, or select the strongest value among the measured values.

Thereafter, the length control device 190 determines which of the respective stages of the classification is equal to the value of the wave energy measured by the energy measuring device 180 (S130).

Thereafter, the length control device 190 controls the length of the support post 174 at an angle corresponding to the phase corresponding to the value of the wave energy measured by the energy measuring device 180, and adjusts the angle of the over-wave attenuation plate 172. At this time, it is preferable that the length control device 190 controls the angle of the over-wave attenuation plate 172 to be smaller as the value of the wave energy measured by the energy measuring device 180 is larger.

100‧‧‧ breakwater structure

110‧‧‧Basic base

112‧‧‧Under the fixed core

120‧‧‧Unit structure

130‧‧‧Basic breakwater wall

140‧‧‧Front breakwater wall

150‧‧‧ rear breakwater wall

160‧‧‧ cover

170‧‧‧Wave wave attenuation structure

Claims (16)

A structure for over-wave attenuation, comprising: a plurality of over-wave attenuation plates provided on an upper side of the breakwater adjacent to the outer sea side, and separated from each other at a predetermined interval to form a plurality of layers to ensure a space through which the crossed seawater can pass; A plurality of support columns are provided on the upper surface of the breakwater, and support the wave-attenuation plate so that the plurality of wave-attenuating plates are spaced apart from each other. The over-wave attenuation structure according to claim 1, wherein the plurality of over-wave attenuation plates are disposed to be parallel in a horizontal direction. The over-wave attenuation structure according to claim 1, wherein the plurality of over-wave attenuation plates are disposed to be inclined from a direction of the outer sea side toward a direction of the inner sea side. The over-wave attenuation structure according to claim 3, wherein the plurality of over-wave attenuation plates are disposed in parallel. The over-wave attenuation structure according to claim 3, wherein the plurality of over-wave attenuation plates are disposed to have different inclinations, respectively. The over-wave attenuation structure according to claim 5, wherein the plurality of over-wave attenuation plates are provided such that the inclination of the over-wave attenuation plate increases as moving from the lower layer toward the upper layer. The over-wave attenuation structure according to claim 3, wherein the plurality of support columns are adjustable in length. The over-wave attenuation structure according to claim 7, further comprising: an energy measuring device for measuring wave energy; and a length control device capable of controlling the plurality of support columns based on a value measured by the energy measuring device The length of the above-mentioned over-wave attenuation plate is adjusted. The over-wave attenuation structure according to any one of claims 1 to 8, further comprising an over-wave guide plate connected to at least one of the plurality of over-wave attenuation plates in a downward direction downwardly One end has an inclination larger than the inclination of the above-described over-wave attenuating plate, thereby guiding the seawater passing through the space between the above-mentioned wave-attenuating plates to the lower side of the inner side of the breakwater. The structure for over-wave attenuation according to claim 9, which further includes the method of hanging downward An auxiliary guide plate that is disposed directly at the end of the above-described over-wave guide plate. A breakwater structure comprising: a base substrate disposed on a sea floor; a breakwater wall disposed on the base substrate; and the over-wave attenuation structure according to any one of claims 1 to 8 The upper surface of the breakwater wall. The breakwater structure according to claim 11, wherein the over-wave attenuation structure further comprises an over-wave guide plate connected to at least one of the plurality of over-wave attenuation plates in a downward direction One end has an inclination greater than the inclination of the above-described over-wave attenuating plate, whereby seawater passing through the space between the over-wave attenuating plates is guided to the lower side of the inner side of the breakwater wall. The breakwater structure according to claim 11, wherein the breakwater wall includes a front breakwater wall, a side facing the outer sea formed by stacking a plurality of unit structures on the base substrate, and a rear breakwater wall, laminated A plurality of the unit structures are formed on one side of the base substrate facing the inland sea, and are separated from the front breakwater wall by a predetermined distance. The breakwater structure according to claim 13, wherein the over-wave attenuation structure further comprises an over-wave guide plate connected to at least one of the plurality of over-wave attenuation plates in a downward direction One end has an inclination greater than the inclination of the over-wave attenuating plate, thereby guiding seawater passing through the space between the over-wave attenuating plates to the inner side of the rear breakwater wall or to the front breakwater wall and the rear breakwater The space between the walls. An over-wave attenuation method using a structure for over-wave attenuation, the wave-attenuation structure comprising: a plurality of over-wave attenuation plates disposed on an upper side of the breakwater adjacent to the outer sea side, separated from each other by a predetermined interval a plurality of layers are formed to ensure a space through which the crossed seawater can pass; a plurality of support columns supporting the over-wave attenuation plate to set the plurality of over-wave attenuation plates at intervals; an energy measuring device for measuring wave energy; a control device capable of controlling the length of the plurality of support columns and adjusting the above-mentioned wave attenuation An angle of the reduced plate; and an over-wave guide plate connected to one end of the at least one of the plurality of over-wave attenuation plates in a downward direction, having an inclination greater than an inclination of the over-wave attenuation plate, the over-wave attenuation The method comprises the following steps: (a), classifying the range of wave energy into a plurality of stages, and matching the angles of the above-mentioned over-wave attenuation plates corresponding to the respective stages and storing; step (b), measuring wave energy; and step (c), determining The measured value of the wave energy corresponds to which of the stages in the step (a); and the step (d), the length of the plurality of support columns is controlled, and the angle of the over-wave attenuation plate is adjusted to correspond At the stage determined in the above step (c), the crossed seawater is directed to the lower side of the inner side of the breakwater. The over-wave attenuation method according to claim 15, wherein in the step (d), the inclination of each of the plurality of over-wave attenuation plates is increased as the value of the wave energy measured in the step (b) is larger The smaller the way, the length of the support post described above.