KR20060028356A - The structure of coastal erosion prevention system constructed by the construction method of costal erosion prevention system & related method - Google Patents

Abstract

The present invention relates to a method for constructing a coastal erosion prevention system and a structure of a coastal erosion prevention system constructed by the method. The present invention relates to attenuating the energy of waves and languae in front of a coastal retaining wall that prevents the collapse of coastal roads. The state created a space zone to prevent coastal erosion by waves and lanyards.

The present invention for this purpose comprises the steps of investigating and analyzing the history of the coast and the direction of the features and currents of the surrounding area and the method of using the restored coast;

Determining a restored form, scale and method of use of the shore;

Surveying the shore to determine a location of a coastal erosion prevention system;

Determining whether or not to conduct piling foundations or direct foundation work by examining the geology of the coast;

Designing a coastal erosion prevention system suitable for said shore;

Manufacturing a required number of precast concrete units (upstanding retaining wall, bottom plate, coastal floor loss prevention block, wave energy damping block) constituting the coastal erosion prevention system;

Embedding with sand as much as you wish to restore the shore (FIG. 6b);

Excavating the shore along which the upright retaining wall of the coastal erosion prevention system is to be installed to a predetermined width and depth to create a valley (12a) necessary for the installation of the upright retaining wall;

Curing type sole concrete (13) at the bottom of the valley (12a);                 

Placing the foundation formwork 14 on the surface of the sole concrete 13 and performing a horizontal black line on the inner side of the foundation formwork to accurately display the height of the foundation concrete 15;

Carrying out work of the reinforcement (16) in the foundation formwork (14);

Performing a concrete construction to cure the basic concrete (15) in the interior formwork (14);

Installing a precast concrete erecting retaining wall (17) as many times as necessary according to the ink line after applying the ink to the surface of the foundation concrete (15);

Excavating the front of the upstanding retaining wall to a constant width and depth to create a valley (12b) to install a bottom plate of a binocular energy damping space zone;

Stiffening the bottom of the trough (12b) to a constant height to allow the bottom plate (19) to be installed at the bottom of the trough;

Installing as many floor plates (19) as necessary at the bottom of the valley (12b);

Inserting and installing a coastal bottom loss prevention block 20 in each fixing groove 19a of the bottom plate 19;

Flattening from the top of the side wall (19b) of the bottom plate to the end of the standing retaining wall (17) so as to install a wave energy dampening block (22) to form a wave energy dampening space zone (21);

A plurality of wave energy dampening blocks 22 are installed so as to span the top of the side wall 19b of the bottom plate and the bottom joining portion 17b of the upright retaining wall, so that a wave energy damping space region of a predetermined magnitude is placed in front of the upstanding retaining wall. 21);

Precast concrete unit constituting the structure of the coastal erosion prevention system constructed by the method and the coastal erosion prevention system constructed by the method to fill the periphery of the coastal erosion prevention system back to earth and sand To provide.

Retaining Wall, Embankment, Coast, Breakwater

Description

The construction of coastal erosion prevention system constructed by the construction method of costal erosion prevention system ＆ related method

1 is a flow chart sequentially showing the construction process of the coastal erosion prevention system according to the present invention

2A-2C are partial elevation views of a coastal erosion prevention system;

3A-3B are elevational views of precast concrete units constituting a coastal erosion prevention system;

4A-4B are side views of a precast concrete unit constituting a coastal erosion prevention system;

5A to 5H are elevation views sequentially illustrating the assembly process of the coastal erosion prevention system.

6a to 6n are cross-sectional views sequentially showing the construction process of the coastal erosion prevention system

7A-7B are cross-sectional views showing another form of the coastal erosion prevention system completed by the present invention.                 

8A-8F are cross-sectional views of the shore showing the action of the completed coastal erosion prevention system;

9A-9C are cross-sectional views of a coastal erosion prevention system showing the presence of sand in the binocular energy decay space zone;

<Description of the code | symbol about the principal part of drawing>

11: coast (shore bottom) 11a: land 12a, 12b: goal

13: outsole concrete 14: foundation formwork 15: foundation concrete

16: reinforcing bar 17: upright retaining wall 17a: protrusion

17b: junction part 17c: sole plate 17d: foundation slab

18: lancular energy attenuation space zone 19: bottom plate

19a: fixing groove 19b: side wall of the bottom plate 19c: introduced sand

20: Coastal floor loss prevention block 20a: drain

20b: Drain groove 21: Wave energy attenuation space zone

22: wave energy damping block 22a: overflow wall

22b: Slit for drainage 24: Ian flow (flow) 25: Wave (break wave)

26: the sea 27: foundation pile

The present invention relates to a method for constructing a coastal erosion prevention system and a structure of a coastal erosion prevention system constructed by the method, and more particularly, in front of a precast concrete upright retaining wall that supports a coastal structure to prevent its collapse. By creating a space zone to dampen the energy of waves and languages, it is possible to prevent coastal erosion by waves and languages.

General coastal erosion and sedimentation is a natural phenomenon in which erosion and sedimentation occur due to the action of coastal streams caused by waves coming from the sea side and the langues converted by the waves hitting the shore and tidal currents, currents, winds, and rivers. As such, erosion and sedimentation have been balanced, the coastline has maintained its shape for a long time.

However, in recent years, as artificial structures such as breakwaters, anchorages, and coastal roads have been constructed, the strength and direction of waves, lanyards, and coastal streams have changed, resulting in unexpected coastal erosion and deposition.

In order to prevent the coastal erosion, many countries and many people have developed and installed structures such as breakwaters, lanyards, and stones and submerged water. However, the structures installed without understanding the causes of coastal erosion are causing problems to expand and accelerate coastal erosion.

The present invention has been made in order to solve the above-mentioned problems, the coastal wall to prevent the erosion of the coast by the sea wall and the erect wall to create a space zone that attenuates the energy of the waves and languae It is an object of the present invention to provide a method of constructing an erosion prevention system and a structure of a coastal erosion prevention system constructed by the method and a precast concrete unit constituting the coastal erosion prevention system.

A first aspect of the present invention for achieving the above object comprises the steps of investigating and analyzing the history of the coast and the direction of the features and currents of the surrounding area and how to use the restored coast;

Determining the type, size and method of use of the restored shoreline;

Surveying the coast to determine the location of the coastal erosion prevention system;

Determining whether or not to conduct piling foundations or direct foundation work by examining the geology of the coast;

Designing a coastal erosion prevention system suitable for said shore;

Manufacturing a required number of precast concrete units (upstanding retaining wall, bottom plate, coastal floor loss prevention block, wave energy damping block) constituting the coastal erosion prevention system;

Buried in sand as much as desired to restore the shore;

Excavating the shore along which the upright retaining wall of the coastal erosion prevention system is to be installed to a predetermined width and depth to create a valley having a scale necessary for installing the upright retaining wall;

Casting and curing sole concrete on the valley floor;

Placing the foundation formwork on the sole concrete surface and then marking the height of the foundation concrete by applying a horizontal black line to the inside of the foundation formwork;

Performing the reinforcement work in the foundation formwork;                     

Performing concrete construction to type-cure the foundation concrete inside the foundation formwork;

Straying the surface of the foundation concrete and then installing the precast concrete upright retaining wall in necessary numbers in accordance with the stray lines;

Excavating the front of the upstanding retaining wall to a predetermined width and depth to make a valley to install the bottom plate of the diocular energy damping space zone;

Stiffening the bottom of the bone to a constant height to allow a bottom plate to be installed at the bottom of the bone to form a binocular energy attenuation space zone;

Installing as many floor plates as necessary at the bottom of the valley;

Inserting and installing a coastal floor loss prevention block in a fixing groove of the bottom plate;

Flattening from the top of the side wall of the bottom plate to the end of the standing retaining wall so as to install a wave energy dampening block;

Installing a plurality of wave energy dampening blocks so as to span a top portion of the side wall of the bottom plate and a bottom junction of the upright retaining wall to form a predetermined magnitude of wave energy damping space region in front of the standing retaining wall;

There is provided a method of constructing a coastal erosion prevention system in which the step of backfilling the periphery of the coastal erosion prevention system with soil is performed sequentially.

According to a second aspect of the present invention for achieving the above object, a protrusion is formed by a predetermined width from the upper end to prevent the rise of waves, and a street lamp and a guardrail may be placed on the upper end of the protrusion. An upright retaining wall on which a sole plate is mounted so that the sole plate has a bottom slab formed therein;

A drainage wall for forming a wave energy damping space zone in parallel with the upright retaining wall at a distance spaced apart from the upright retaining wall, and a drainage for delaying the release of the langues while discharging the eyes from the wave energy damping spaces. A wave energy damping block having slits formed on the overflow wall;

A space formed between the upstanding retaining wall and the wave energy damping block, which traps a strong wave intruding temporarily over the overflow wall to attenuate the energy of the wave, and converts the langues converted from the wave through a plurality of drainage slits. A wave energy attenuation space zone for discharging to a binocular energy attenuation space zone;

In order to prevent the erosion of the coastal bottom due to the reflected wave of the wave and the fall of the languae, the front surface is inclined surface, and at the bottom thereof, a block for preventing the loss of the coastal bottom having a groove for drainage is formed:

The spatial region formed between the wave energy damping block and the coastal bottom loss preventing block, when the wave enters into the wave energy damping space region and is converted into icicles and is discharged through the slit of the overflow wall, the icicles are widened. A binocular energy attenuation space region that diffuses and attenuates potential energy of the binocular;

A bottom plate connecting the wave energy damping block and the coastal bottom loss preventing block to form a binocular energy damping space region therebetween;

A drain hole formed between the shore bottom loss preventing block and the bottom plate by a drain hole;

A plurality of hooks (not shown) for fastening each of the precast concrete units constituting the coastal erosion prevention system to equipment such as a crane to facilitate installation and movement of the precast concrete unit;

There is provided a structure of a coastal erosion prevention system, characterized by consisting of sole concrete and foundation concrete or foundation piles to prevent settlement and fall of the coastal erosion prevention system.

According to the third aspect of the present invention for achieving the above object, a protrusion is formed by a predetermined width from the upper portion to prevent the rise of waves, and a street lamp and a guardrail may be placed on the upper portion of the protrusion. An upright retaining wall having a sole plate mounted thereon, the bottom portion having a foundation slab for preventing falling;

The overhang wall has a slope on the front so that the waves coming from the sea side can easily enter the wave energy damping space zone, and the iris flows from the wave energy damping space zone to the ionic energy damping space zone. A wave energy damping block having a plurality of slits formed on the overflow wall for delaying the discharge time;

A front surface of the inclined surface to prevent the loss of the shore bottom due to the reflected wave of the wave and the fall of the languae, the bottom portion of the block for preventing the shore bottom loss having a drain hole forming groove;

Coastal erosion comprising a bottom plate which connects the wave energy damping block and the coastal floor loss prevention block, and forms a binocular energy attenuation space region between the wave energy dampening block and the coastal floor loss preventing block. A precast concrete unit of the prevention system is provided.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings 1 to 9c illustrating an embodiment of the present invention.

1 is a flow chart sequentially showing the construction process of the coastal erosion prevention system according to the present invention,

2A-2C are partial elevation views of a coastal erosion prevention system;

2A is an elevational view of a coastal erosion prevention system showing a state just before completion,

FIG. 2B is an elevation view of the coastal erosion prevention system showing a state immediately after completion,

FIG. 2C is an elevational view showing the normal state of a coastal erosion prevention system in which sand is introduced into the ionic energy attenuation space zone and the wave energy attenuation space zone by the action of waves and wind after completion;

3A to 3B are elevation views of the precast concrete unit constituting the coastal erosion prevention system,

3a is an exploded elevation view of a precast concrete unit,

3b is an assembled elevation view of the precast concrete unit,

4A to 4B are side views of a precast concrete unit constituting a coastal erosion prevention system,

4a is an exploded side view of the precast concrete unit,                     

4b is an assembled side view of the precast concrete unit,

5A to 5H are elevation views sequentially illustrating the assembly process of the coastal erosion prevention system.

5A is an elevation view of an upstanding retaining wall in a precast concrete unit of the coastal erosion prevention system;

5B is an elevation view of a plurality of upstanding retaining walls assembled;

FIG. 5C is an elevation view in which the bottom plate is installed at a distance spaced apart from the upright retaining wall in the precast concrete unit of the coastal erosion prevention system; FIG.

5D is an elevation view of a plurality of bottom plates assembled;

FIG. 5E is an elevation view of a coastal floor loss prevention block installed on a bottom plate among precast concrete units of a coastal erosion prevention system; FIG.

5F is an elevation view of a plurality of coastal floor loss prevention blocks assembled;

FIG. 5G is an elevation view in which the wave energy dampening block is installed from the joint portion of the upright retaining wall to the upper sidewall of the bottom plate in the precast concrete unit of the coastal erosion prevention system.

5H is an elevation view of a plurality of wave energy attenuation blocks assembled;

6a to 6n are cross-sectional views sequentially showing the construction process of the coastal erosion prevention system,

6A is a cross-sectional view of the eroded shore,

6B is a cross-sectional view of the shore, which is reclaimed (empty) and restored to the original shore,                     

Figure 6c is a cross-sectional view of the coast made the valley to install the upright retaining wall,

6D is a cross-sectional view of the coast where the sole concrete is poured into the valley,

Figure 6e is a cross-sectional view of the coast where the foundation formwork is installed on the upper surface of the sole concrete,

6F is a sectional view of the shore where the reinforcement work is performed in the foundation formwork;

6g is a cross-sectional view of the coast where the foundation concrete is poured into the foundation formwork;

Figure 6h is a cross-sectional view of the coast where the upright retaining wall is installed on the upper surface of the foundation concrete,

Figure 6i is a cross-sectional view of the coast made the bone to install the bottom plate,

Figure 6j is a cross-sectional view of the coast with a bottom plate installed on the bone floor

Figure 6k is a cross-sectional view of the coast with a block for preventing the loss of the coast bottom on the top plate,

6L is a cross sectional view of the shore with the coastal bottom flattened from the top of the sidewall of the bottom plate to the end of the standing retaining wall,

6m is a cross-sectional view of the coast with a wave energy dampening block from the junction of the upright retaining wall to the top of the side wall of the bottom plate;

FIG. 6N is a cross-sectional view of the shore complete of the coastal erosion prevention system by backfilling the upright retaining wall and backfilling the excavated shore;

7a to 7b are cross-sectional views showing another form of the coastal erosion prevention system completed by the present invention,

7A is a cross-sectional view of the coast where the foundation is directly under the retaining wall and bottom plate of the coastal erosion prevention system;                     

7B is a cross-sectional view of the coast where piling foundation work was carried out under an upstanding retaining wall and bottom plate of the coastal erosion prevention system;

8A-8F are cross-sectional views of the shore showing the action of the completed coastal erosion prevention system,

8A is a cross-sectional view of the shore showing the breaking wave of the usual shore with low crest,

8B is a cross-sectional view of the shore showing the languae of the normal coast with low crest,

8C is a cross-sectional view of the shore showing the breaking wave when the crest is high;

8D is a cross-sectional view of the shore showing the oculars when the height is high;

8E is a sectional view of the shore showing the breaking wave when the crest is very high;

8F is a cross-sectional view of the shore showing the oculars when the crest is very high;

9A through 9C are cross-sectional views of a coastal erosion prevention system showing a state of sand entering a binocular energy decay space region;

9A is a cross-sectional view of the shore showing a state in which sand is introduced into the coastal erosion prevention system completed by the present invention,

9B is a cross-sectional view of the shore showing a state in which sand is introduced into another coastal erosion prevention system completed by the present invention,

Figure 9c is a cross-sectional view of the coast showing a state in which sand is introduced into another coastal erosion prevention system completed by the present invention,

The present invention includes the steps of investigating and analyzing the history of the coast and the natural phenomena such as tides, submerged water, sewers, lanyards, breakwaters, and tides, ocean currents, and wind (seasonal winds);

Determining a restored form, scale and method of use of the shore;

Surveying the shore to determine a location of a coastal erosion prevention system;

Conducting piling foundation or direct foundation work by examining the geology of the coast (this patent application was prepared based on the application of direct foundation work, but the scope of the present invention includes the application of piling foundation work) Determining whether or not;

Designing a coastal erosion prevention system suitable for said shore;

Manufacturing the required number of precast concrete units constituting the coastal erosion prevention system;

Embedding with sand as much as you wish to restore the shore (FIG. 6b);

Excavating the shore along which the upright retaining wall of the coastal erosion prevention system is to be installed to a predetermined width and depth to create a valley (12a) necessary for the installation of the upright retaining wall;

Curing type sole concrete (13) at the bottom of the valley (12a);

Placing the foundation formwork 14 on the surface of the sole concrete 13 and marking the height of the foundation concrete 15 accurately by applying a horizontal black line to the inside of the foundation formwork;

Carrying out work of the reinforcement (16) in the foundation formwork (14);

Performing a concrete construction to cure the basic concrete (15) in the interior formwork (14);                     

Installing a precast concrete erecting retaining wall (17) as many times as necessary according to the ink line after applying the ink to the surface of the foundation concrete (15);

Excavating the front of the upstanding retaining wall to a constant width and depth to create a valley (12b) to install a bottom plate of a binocular energy damping space zone;

Compacting the bottom of the valley (12b) to a constant height so that a bottom plate (19) is formed at the bottom of the valley to form a binocular energy attenuation space zone;

Installing the required number of bottom plates (19) of an ionic energy attenuation space zone at the bottom of the valley (12b);

Inserting and installing a coastal floor loss prevention block (20) in each of the fixing grooves (19a) of the bottom plate (19);

Flattening from the top of the side wall (19b) of the bottom plate to the end of the standing retaining wall (17) so as to install a wave energy dampening block (22) to form a wave energy dampening space zone (21);

A plurality of wave energy damping blocks 22 are provided so as to span the top of the side wall 19b of the bottom plate and the bottom joining portion 17b of the upstanding retaining wall, so that the wave energy damping space region 21 has a constant magnitude in front of the standing retaining wall. Forming a);

Backfilling the periphery of the coastal erosion prevention system to soil is carried out sequentially.

The construction method of the coastal erosion prevention system as described above will be described in more detail with reference to FIGS. 6A to 6N.                     

As shown in FIG. 6B, it is economical to use sand collected from a nearby sea when reclaiming the shore, but when the amount of sand to be collected is small, it may be transferred from another region.

When placing the sole concrete 13 on the bone floor as shown in FIG. 6d, if the bone floor is soft ground, instead of the sole concrete 13 as shown in FIG. It is possible to prevent the settlement of the upstanding retaining wall (17).

When installing the required number of precast upright retaining wall 17 on the foundation concrete 15 as shown in FIG. 6H, cement mortar or sand may be shallowly laid on the surface of the foundation concrete 15, and an upstanding retaining wall may be installed thereon.

As shown in FIG. 6I, the distance between the upright retaining wall 17 and the valley 12b should be constant when excavating the coast to make the valley 12b, as well as the difference in the floor height between the upright retaining wall and the valley 12b. Should be.

And it is possible to prevent the settlement of the bottom plate by performing a direct foundation 13 or piling foundation 27 as shown in Figure 7a or 7b attached to the bottom of the valley (12h).

When the bottom plate 19 is installed as shown in FIG. 6J, the height of the bottom plate 19 must be adjusted so that the top height of the side wall 19b of the bottom plate 19 and the bottom height of the upstanding retaining wall 17 are almost the same. The spacing between the bottom plate 19 and the upstanding retaining wall 17 should also be constant.

When the coastal erosion prevention system is completed, as shown in FIG. 6N, the sealing material may be filled in the joint portions of the precast concrete units constituting the coastal erosion prevention system.

The operation of the coastal erosion prevention system constructed by the present invention as described above with reference to Figures 8a to 8f attached in detail as follows.

As shown in FIGS. 8A to 8B, when the wave height is low, waves coming from the sea may not reach the coastal erosion prevention system, and sand accumulated on the sea floor may be pushed by the waves 25 and deposited on the shore.

And the sand deposited on the shore is buried in the sea wind while burying the evanescent energy decay space zone of the coastal erosion prevention system.

8c to 8d, when the wave height is high, the wave 25 coming from the sea side reaches the coastal erosion prevention system, but does not allow the wave 25 to cross the overflow wall 22a of the coastal erosion prevention system. It is

At this time, the waves 25 that cannot cross the overflow wall are pushed down into the ionic flow energy decay space zone 18 and are converted into drifts 24 and sand 19c introduced into the drift energy decay space zone and The potential energy caused by the drop of the ionic flow 24 is attenuated by colliding with water (waves, iris) and then spreading widely.

In addition, the energy-damped languae 24 floats the moire 19c that has flowed into the languages-energy decay space zone 18, and together with the suspended sands 19c, prevents the shore bottom loss block 20. It flows over to the sea.

Therefore, the outflow of the sand 19c by the eye flow and the inflow of the sand 19c by the wind and the wave 25 are repeated in the ionic flow energy attenuation space zone 18.

However, if there is no coastal floor loss prevention block 20, the ionic flow energy attenuation space zone due to the impact of the waves 25 and the impact of the falling of the languae 24 that do not go beyond the overflow wall 22a. 18 becomes eroded, which leads to erosion of the entire coastal bottom.

Therefore, the coastal floor loss prevention block 20 serves to prevent the erosion of the coastal bottom as well as the erosion of the binocular energy attenuation space zone 18.

In addition, the front surface of the coastal bottom loss prevention block 20 is formed as an inclined surface, so that the height of the coastal bottom is lowered, thereby reducing the occurrence of reflected waves of waves 25 coming from the sea when the top of the block 20 is exposed above the coastal bottom. While giving the waves to easily cross the coastal floor loss prevention block (20),

In order to reduce the erosion of the coastal bottom by the languae by reducing the flow drop of the languae 24 flowing toward the sea in the lancular energy attenuation space zone 18.

On the other hand, a certain amount of the languae 24 in the language energy attenuation space zone 18 flows toward the sea through the drainage hole 20a formed at the bottom of the block 20 for preventing coastal loss and the bottom of the sandy beach.

The drainage hole 20a formed at the bottom of the block for preventing the loss of the coastal bottom discharges water (waves and irises) introduced into the ionic energy attenuation space zone 18 to the sea through a water-permeable layer beneath the sandy beach. It flows toward the sea 26 over the top surface of the loss prevention block 20 and serves to reduce the amount of langues 24 that erode the coastal bottom.

8E-8F, when the height of the wave is very high, the upstanding retaining wall 17 as the wave coming from the sea side temporarily enters the wave energy damping space region 21 beyond the overflow wall 22a of the coastal erosion prevention system. It strikes violently on the front of) and rises toward the top of the upright retaining wall, and then becomes stagnant within the wave energy damping space zone.

As such, the waves stagnating within the wave energy attenuation space zone instantaneously lose most of the kinetic energy of the wave 25 and then through the drainage slit 22b of the overflow wall 22a through the binocular energy attenuation space zone. As soon as it is discharged into the langue (24).

Subsequent flows of the lons 24 are the same as those described with reference to FIGS. 8C to 8D.

On the other hand, the plurality of slits 22b formed on the overflow wall 22a generate a reflected wave as the large waves pushed hard from the sea side hit the front of the upright retaining wall, and then convert into langue flow and flow toward the sea at once. In the case of the shore, the bottom of the coast is severely eroded by the reflected wave and language 24.

Therefore, Ian, in which the waves entering into the wave energy damping space zone 21 at once are blocked by the overflow wall 22a so that they cannot flow into the sea at once, and then the wave is converted only through the plurality of slits 22b in the overflow wall. By releasing the stream, it delays the volume and flow of the lanyard, reducing the erosion of the coastal bottom by the lanyard.

And when the width of the slit 22b is wide, the instantaneous discharge of the lans 24 may increase and the loss of the coastal bottom due to the lans may be severe. However, when the width of the slit 22b is narrow, the wave energy is attenuated. As the wave enters the wave energy damping space zone before the waves flowing into the space zone 21 are all discharged through the slit 22b, eventually, a large amount of waves enters the wave energy damping space zone 21. ) In the unstabilized state, i.e., in the state that the energy is not attenuated, flows over the overflow wall 22a at a time, into the ionic energy decay space zone 18, and then flows toward the sea, causing severe erosion of the coastal bottom. Can be generated.

Therefore, the width of the slit 22b should be set in consideration of the height of the shore where the coastal erosion prevention system is to be installed, etc., and then the wave energy damping block 22 should be manufactured.

On the other hand, the upper and lower widths of the slits 22b are the same or similar, but the front and rear widths are wide and narrow. The main purpose is to facilitate the dismantling of the formwork used when manufacturing the wave energy dampening block. It is also intended to facilitate the ingress of waves 25 into the wave energy attenuation space zone 21.

By using the construction method of the precast concrete unit and the coastal erosion prevention system constituting the coastal erosion prevention system of the present invention, when the coastal erosion prevention system is completed on the eroded coast can be obtained various effects as follows.                     

first; Coastal erosion prevents wave erosion by reducing the erosion energy of the wave as it effectively breaks the wave, even when high wave waves are pushed to the shore violently. Reduces flood damage in the zone.

second; Even when high wave waves are pushed to the shore violently, the coastal erosion prevention system effectively breaks the waves and dampens the kinetic energy of the waves, thus preventing the destruction and collapse of coastal retaining walls and coastal facilities from the violent impact of the waves. have.

third; The coastal erosion prevention system effectively reduces the potential energy of languae and delays the flow and time of flow so that a large amount of languages do not flow at a time. Reduce floor erosion

fourth; The beautiful appearance of the coastal erosion prevention system does not harm the coastal view after installation.

Fifth; The installed coastal erosion prevention system is a prefabricated structure that uses a precast concrete unit even if the shape is deformed due to uneven settlement or the like, so that it is easy to recover, reinstall and dismantle.

sixth; Since the coastal erosion prevention system is a prefabricated structure using precast concrete units, the construction time can be shortened, and the damage of the construction site due to the waves that can occur during construction can be reduced.

Claims (9)

Researching and analyzing the history of the coast, the direction of the features and currents of the surrounding area, and the method of using the restored coast; Determining a restored form, scale and method of use of the shore; Surveying the shore to determine a location of a coastal erosion prevention system; Determining whether or not to conduct piling foundations or direct foundation work by examining the geology of the coast; Designing a coastal erosion prevention system suitable for said shore; Manufacturing the required number of precast concrete units constituting the coastal erosion prevention system; Embedding with sand as much as you wish to restore the shore (FIG. 6b); Excavating the shore along which the upright retaining wall of the coastal erosion prevention system is to be installed to a predetermined width and depth to create a valley (12a) necessary for the installation of the upright retaining wall; Performing a type curing or piling foundation construction on the sole 12 at the bottom of the valley 12a; Placing the foundation formwork 14 on the surface of the sole concrete 13 and marking the height of the foundation concrete 15 accurately by applying a horizontal black line to the inside of the foundation formwork; Carrying out work of the reinforcement (16) in the foundation formwork (14); Performing a concrete construction to cure the basic concrete (15) in the interior formwork (14); Installing a precast concrete erecting retaining wall (17) as many times as necessary according to the ink line after applying the ink to the surface of the foundation concrete (15); Excavating the front of the upstanding retaining wall to a constant width and depth to create a valley (12b) to install a bottom plate of a binocular energy damping space zone; Stiffening the bottom of the valley (12b) to a certain height so that the bottom plate (19) can be installed at the bottom of the valley; Installing as many floor plates (19) as necessary at the bottom of the valley (12b); Inserting and installing a coastal floor loss prevention block (20) in each of the fixing grooves (19a) of the bottom plate (19); Flattening from the top of the side wall (19b) of the bottom plate to the end of the standing retaining wall (17) so as to install a wave energy dampening block (22) to form a wave energy dampening space zone (21); A plurality of wave energy damping blocks 22 are provided so as to span the top of the side wall 19b of the bottom plate and the bottom joining portion 17b of the upstanding retaining wall, so that the wave energy damping space region 21 has a constant magnitude in front of the standing retaining wall. Forming a); A method of constructing a coastal erosion prevention system in which a step of backfilling the periphery of the coastal erosion prevention system is carried out sequentially. Conduction of the retaining wall and the joining part 17b to which the protrusion 17a which prevents wave run-up, the sole plate 17c mounted so that guard rails, etc. can be installed in the upper part of the protrusion, and the wave energy damping block are joined. An upstanding retaining wall 17 constituted by a foundation slab 17d that prevents the slab; A wave energy damping block 22 having a wave wall 22a forming a wave energy damping space zone 21 having a predetermined scale in a state parallel to the upstanding retaining wall at a distance spaced apart from the upstanding retaining wall; A space formed between the upstanding retaining wall 17 and the wave energy damping block 22, which traps a fierce wave 25 that temporarily enters the overflow wall 22a to attenuate the kinetic energy and potential energy of the wave. A wave energy decay space section 21 for discharging the eye flow 24 transformed in the wave together with the drift energy decay space zone 18 through a plurality of drainage slits 22b; And a coastal bottom loss prevention block (20) forming a binocular energy attenuation space zone (18) in front of the wave energy attenuation space zone (21): A bottom plate 19 for forming a binocular energy attenuation space zone 18 between the coastal floor loss prevention block and the wave energy damping block 22; A space region formed between the wave energy damping block 22 and the coastal floor loss preventing block, wherein waves entering the wave energy damping space region 21 are discharged through the drainage slit 22b of the overflow wall 22a. An ionic energy attenuating space zone 18 which, when converted into an ionic eye 24, spreads the ionic eye 24 widely to attenuate potential energy and kinetic energy of the ionic eye; The structure of the coastal erosion prevention system, characterized in that composed of the foundation concrete (15) and the sole concrete (13) or foundation pile (27) to prevent the settlement and fall of the upstanding retaining wall (17). The method of claim 2, The binocular energy attenuation space zone 18 is The drainage port 20a for discharging a certain amount of the lancular flow flowing into the lanthanum energy attenuation space zone 18 toward the sea 26 through the sand layer of the coast 11 is formed at the bottom of the block 20 for preventing the loss of the coastal bottom. The structure of the coastal erosion prevention system, characterized in that. At the upper end, there is a protrusion 17a that prevents the rise of waves, and at the upper end of the protrusion 17a, a sole plate 17c is mounted to allow entry of guard rails, etc., and at the lower end, a foundation slab 17d for fall prevention is provided. An upright retaining wall 17 formed at the end of the foundation slab 17d and having a joining portion 17b formed thereon; A wave energy attenuation block 22 forming a wave energy attenuation space zone 21 in front of the standing retaining wall 17; A block for preventing coastal bottom loss 20 forming a magnitude of a binocular energy attenuation space zone 18 in front of the wave energy attenuation space zone 21: Precast concrete unit constituting the coastal erosion prevention system, characterized in that it consists of a bottom plate (19) to form a binocular energy decay space zone 18 between the wave energy damping block 22 and the coastal floor loss prevention block. . The method of claim 4, wherein The wave energy attenuation block 22 forming the wave energy attenuation space zone 21 is A precast concrete unit constituting the coastal erosion prevention system, characterized in that the front face of the overflow wall (22a) is inclined so that waves coming from the sea side can easily enter the wave energy damping space zone. The method according to claim 4, wherein The overflow wall 22a, which forms the wave energy attenuation space zone 21, A plurality of drainage slits 22b which delay the discharge of the irises 24 when draining them from the wave energy decay space zone 21 to the eye flow energy decay space zone 18. A precast concrete unit constituting the coastal erosion prevention system, which is formed on the flow wall 22a. The method according to claim 4 to 6, The overflow wall 22a, which forms the wave energy attenuation space zone 21, In the installed state, either the front of the drainage slit 22b toward the sea 26 or the rear of the drainage slit 22b toward the wave energy attenuation space zone 21 is made wider. , Precast concrete unit constituting the coastal erosion prevention system, characterized in that to facilitate the dismantling of the formwork when manufacturing the wave energy dampening block (22). The method of claim 4, wherein The block for preventing the loss of the shore bottom 20 is Reflected waves generated when the waves 25 from the sea 26 hit the front surface of the coastal floor loss preventing block 20, and the drop of the ionics 24 overflowing in the ionic energy attenuation space zone 18. Precast concrete unit constituting the coastal erosion prevention system, characterized in that the front surface of the coastal floor prevention block inclined to reduce the erosion of the coastal bottom (11). The method according to claim 4 and 8, The block for preventing the loss of the shore bottom 20 is When the coastal floor loss prevention block 20 is installed on the top of the bottom plate 19, the bottom plate 19 is formed with a recess 20b that forms a drain hole 20a between the bottom plate 19 and the coastal floor loss prevention block. Precast concrete unit constituting the coastal erosion prevention system, characterized in that formed on the floor loss prevention block (20).

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