KR20060098723A - Control method of reflected wave that absorb waves and prevent coastline erosion - Google Patents

Abstract

The present invention absorbs the waves gathered on the shore to prevent the shore sand from being swept away by the sea during the occurrence of large waves to flow to the sea through a separate channel without passing through the sand when the waves return to the sea The invention relates to a method for controlling the absorber and the reflected wave.

Breakwater, Breakwater, Shoreline, Shoreline Loss, Docking, Pier, Coastal Erosion, Backflow Prevention

Description

Control method of reflected wave that absorbed waves and prevent coastline erosion}

1 is a longitudinal cross-sectional view of a conventional coastal loss prevention breakwater

Figure 2 is a longitudinal cross-sectional view of a conventional vessel berthing facility

Figure 3 is a longitudinal cross-sectional view of a breakwater installed on the coast without conventional water

4 is a longitudinal sectional view of a conventional breakwater submerged breakwater

5 is a longitudinal cross-sectional view of a breakwater submerged in shallow water embodied in the present invention.

Figure 6 is a longitudinal cross-sectional schematic diagram of the coastal erosion-absorbing absorbent embodying the present invention

Figure 7 is a longitudinal cross-sectional view of a sorbent which is a ship berthing facility carried out by the present invention.

8 shows various examples of the absorbent according to the present invention.

<Description of the symbols for the main parts of the drawings>

Sleep

2. coastal sand or earth and sand

3. Foreign substance prevention net

4. Stair Structure

4. Hierarchy

5. Upper flume

6. Check valve

7. catchment hollow

8. Lower flow channel

9. Safety net

10. Absorbent

10´. Absorbent for eyepiece

12. Rubble or Gravel

13. Ship

14. Seawater Exchange

15. Breakwater

17. Coastal Keys

18. Surge

18´. Rise in water level due to waves

19. Reflected Waves

19´. Turbulence due to drop in water level due to reflected waves

20. Puddle dug by echoes

21. Stepped irregularities

22. Shipbuilding Improvement

The present invention relates to a method for controlling a wave absorber and a reflected wave having a concept opposite to that of a conventional breakwater. A conventional breakwater is a wave that hits a breakwater, and the reflected wave is energized by the reaction, and the water hits the coastal soil. When digging, a lot of water that could not be absorbed in the sand drags down the soil, causing the coastal erosion, and thus breakwater breakdown continues.

Breakwaters have been installed to protect coastlines and ships from the waves, but they are eventually collapsed by long-term waves. To solve this problem, we propose a control method of absorbers and reflected waves that absorb waves and return them to the sea over a certain distance from the coast.

The causes of coastal erosion include: deep pools due to changes and pavement of river channels that have been a source of sand, reduced sand inflow into rivers due to road pavement, forests, and dense forests, and indiscriminate sea sand collection below sea levels near the coast. As the sand is moved toward the pools by the waves, the currents, or the algae, the flattening progresses, the coastal sands are eroded little by little, and the erosion of the shoreline due to the installation of breakwaters and structures that do not consider the flow of the currents or the algae is in progress.

There is also a natural erosion by waves, when large waves (18) dig through the shore soil (2) into rough waters and a lot of water flows down, some of the soil is swept away, some of which accumulate at a certain distance from the shore. (17) and some are taken to deep or distant waters.

Small waves have the ability to restore the shore again by pushing the soil particles accumulated on coastal keys to the shore little by little. However, the particles dragged into deep or distant seas by large waves do not return permanently and the inflow of soil is reduced. Lost soil is not filled, so over time, the coast becomes increasingly eroded.

 The conventional breakwater 15 installed to prevent a big wave is the most basic facility built to prevent the loss of the coastal earth and sand (2) to protect the coastline or to protect the ship anchored in the berthing facility from the wave.

However, the breakwater 15 submerged in the shallow water shown in FIG. 3 has a place where the water is blocked by the breakwater when the big wave 18 is pushed, and there is no place to go anymore. It rises up (18 ') and has potential energy. Water having a potential energy is forced to descend (19 ') by gravity.

At this time, the water flows down the water along the breakwater wall. The water that reaches down to the bottom spreads in all directions to create turbulence (19 '), and when the turbulence draws soil or gravel on the bottom weaker than the breakwater, a pit (20) is formed at the bottom of the breakwater, and the breakwater breaks down.

As shown in FIG. 3, the coastal erosion prevention breakwater 15 installed in the absence of water has the force of the reflected wave 19 of the wave due to the reaction of the large wave 18 hitting the breakwater, thereby making the water more stiff in the coastal soil. When you smash the soil, the water that is not absorbed by the sand drags the soil down and causes the erosion. As a result, the earth and sand 2 of the shoreline shown in FIG. 3 is eroded, and the breakwater 15 shown in FIG. 4 is blocking the waves, but this breakwater is caused by the fall of the water level by the reflected wave whenever the big wave 18 hits. Turbulence (19 ') increases the dug pool (20) is to dig under the breakwater (15) to collapse, the collapsed breakwater is not only collapsed in one place, but the entire chain almost collapses and frequent breakwater Collapse and construction are global phenomena, and these recurring phenomena are the result of research.

Referring to the accompanying drawings of the present invention in detail, a foreign matter prevention net (3) is installed in the passage in which the wave is absorbed to prevent the inflow of suspended matter pushed by the wave, the water passing through the foreign matter prevention net (3) is a step After passing through the non-return plate 6 through the upper flow channel 5 formed above or below the structure 4 or the hierarchy 4 '(hereinafter, the step structure or hierarchy is referred to as the hierarchy). When driven into the hollow (7), the water level is higher than the sea level (1), so the potential energy is generated, so that the circulation flows out into the sea until the water level difference is equal along the lower channel (8).

Safety net (9) is filled with water through the safety net (9) when the water filled in the receiving hollow (7) of the sorbent due to unbearable big waves to prevent the sorbent (10) is collapsed by water pressure In operation, the backflow prevention net (6) flows through the upper flow channel (5) formed in the catchment hollow (7) flows through the upper flow channel (5 ') to prevent the loss of sand.

The inclination of the staircase structure 4 is inclined so that the catchment hollow 7 side is lower than the outside of the staircase structure 4 so that the water overflowed from the safety net 9 flows into the upper flow channel 5 toward the loss of sand. To prevent.

Lower runway (8) is a constant height so as not to touch the bottom of the sea and the slope to the sea side is lowered so that it can easily flow out when sand inflows. In addition, the length of the lower channel 8 is longer than the point where the wave and the reflected reflected wave when it comes in considering the period and wavelength when a large wave hits meet.

 When the wave hits the breakwater (15´), which is the berth, the reflected wave is generated, and the reflected wave causes the berthing vessel to sway and destroys the berth (15´) or the ship 13 is destroyed. Providing a piercing device 11 for the eyepiece facility having a hierarchical structure 4 ′ of a vertical structure rather than a stepped structure for easy anchoring can prevent the next accident.

 The waves hit by the breakwater are uncontrollable, so the wave goes up and down immediately, and when the incoming wave and the reflected wave meet at regular intervals, they create a triangular wave at a certain moment, creating a larger wave that is dangerous to the ship. The absorbent (10 ') is a wave absorbed by the hierarchical structure (4') passes through the foreign matter prevention net (3), passes through the upper flow channel (5) through the backflow prevention plate (6), and then collecting water hollow (7) As the water gathers and the water level is higher than the sea level (1), the water flows out through the lower channel (8), thereby controlling the reflected wave to reduce the shaking of the ship by the reflected wave.

The sorbent is made of reinforced concrete structure and can be integrated or assembled depending on the terrain. The non-return plate 6 is attached to the upper part so that it can be opened and closed by attaching to the hierarchical structure 4, and the non-return plate 6 is The hierarchical structure 4 of the upper layer structure 4 is longer than the upper layer structure 4 so that it can be opened and closed by itself to form a slight inclination angle so that the waves enter and the water entering the catchment hollow (7) does not escape about 90% out of it. Since the rubber gasket is attached to the inner side of the layered structure 4, the non-return plate 6 should not float in water because the density is higher than that of water.

This material barrier 3 is weather resistant, corrosion resistant, cold resistant and corrosive and must be able to withstand the forces of the waves.

The sorbents of the present invention cause erosion by coastal structures of the seawater heat exchange system of the coastal erosion prevention, coastal roads, coastal structures, ship berthing facilities, bridges receiving bridges, pier, thermal power plants of thermal power plants It can be applied to any place that can be installed at the front of the existing breakwater to be protected from the waves, or to prevent the collapse of coastal structures, and can be widely applied by modifying the shape or structure. Examples described in the specification of the present invention Since the invention can be made without departing from the technical spirit of the invention, the invention belongs to the appended claims.

The shoreline erosion absorber and the ship's berth wick that prevent shoreline erosion and ship collision damage caused by waves in the coastal breakwater or ship berth can be prevented from coastline erosion and damage to the ship and the berth. .

The above effects can be prevented from severely damaging coastal countries, especially due to rising sea levels due to climate change and the collapse of coastlines caused by tsunamis and high waves, which are becoming more powerful due to abnormal climates. The damage is very serious and the effect of the wave can be said to be great.

Therefore, the coastline erosion absorber and ship berth absorber and the reflected wave control method of the present invention will be excellent in terms of economic efficiency, stability, and environmental pollution prevention compared to conventional breakwater.

Claims (14)

The shore is characterized in that the absorbed wave is absorbed through the upper flow channel (5) under the staircase structure (4) to send the seawater collected in the water collecting hollow (7) to the bottom of the sea surface through the lower flow channel (8) Absorbent with excellent erosion resistance A sorbent having excellent coastal erosion resistance according to claim 1, characterized in that it comprises an upper flow channel (5) under the staircase structure (4) which enables people to travel to the sea. The absorbent having excellent coastal erosion resistance according to claim 1, characterized in that a foreign matter prevention net (3) is installed at the front of the upper flow channel (5) in order to filter foreign matter from the waves. The water absorbing agent having excellent coastal erosion resistance according to claim 1, characterized in that the catchment hollow (7) is installed along the coastline to the left and the right so that the flow of water introduced through the upper flow channel (5) is not blocked. The coastal erosion according to claim 1, wherein when the catchment hollow (7) is filled with water, the water flows through the safety net (9) to prevent the breakdown of the sorbent (10) by water pressure. Shock-absorbent with excellent prevention The upper flow channel of claim 1, wherein the backflow preventing plate (6) which prevents the water that has been pushed through the upper flow channel (5) from entering the water collecting hole (7) again escapes through the upper flow channel (5). (5), the absorbent having excellent coastal erosion resistance, characterized in that installed in The lower channel 8 is inclined low toward the sea and above a certain height above the sea floor so that the water collected in the catchment hollow 7 can escape with the sand below the sea level through the lower channel 8. Absorbent with excellent coastal erosion resistance, characterized by being installed to rise The water absorbent having excellent coastal erosion resistance according to claim 1, wherein the inclination of the staircase structure 4 has an inclination angle in which the catchment hollow 7 is lowered. The coastal erosion prevention method according to claim 1, wherein the staircase structure 4, which can be walked toward the sea level, is made up of a vertical layer structure 4 'such that the surface facing the sea is perpendicular to the inside of the absorbent. Excellent absorbent 7. The non-return plate according to claim 6, wherein the non-return plate 6 installed in the upper flow channel 5 has a constant inclination so that the backflow of water collected in the collecting hollow 7 is automatically blocked by gravity. (6) has a water-absorbent excellent coastal erosion resistance, characterized in that 10. The berth absorber for ship berthing according to claim 9, wherein the vertical layer structure 4 'reduces the flow of the berthing vessel by absorbing waves and controlling reflected waves. 11. The coastal erosion prevention method according to claim 10, wherein the backflow prevention plate (6) maintains a constant inclination and an egg-shaped unevenness (21) is formed on the upper part of the hierarchical structure (4 ') so as not to be pushed toward the sea during backflow. Excellent absorbent The backflow prevention plate 6 prevents the waves pushed into the sorbent from entering the collecting hole 7 through the upper channel 5 and exiting again through the upper channel 5 and the lower channel 8 The control method of the reflected wave comprising the step of controlling to flow below the sea level through 15. The method of claim 13, wherein the waves coming in at a predetermined period into the absorbent flow to the left and right of the catchment hollow 7 formed along the shoreline, and the water level is rapidly lowered without accumulating water in the catchment hollow 7 and And controlling the water to flow down the sea channel (8) installed at regular intervals below the water collecting hollow (7) to flow out below the sea level.

Images