KR101949499B1 - Prevention apparatus for coastal erosion and lost sand - Google Patents

Abstract

The present invention relates to an apparatus for preventing coastal erosion and sand loss by using a hydraulic jump, wherein a hydraulic jump is used to effectively prevent coastal erosion and sand loss due to waves. To this end, the apparatus comprises: a pair of support blocks installed on a shore at a predetermined interval; a rotary shaft penetrating between the support blocks to be installed at a predetermined height; at least one paddle hung on the rotary shaft to be rotated by running water, and configured to prevent sand conveyed to the shore in accordance with waves of sea water from being discharged outside the shore; and a blade formed on both sides of the paddle to dig the sand conveyed to the shore in accordance with the waves of the seawater toward the shore.

Description

Technical Field [0001] The present invention relates to a coastal erosion prevention apparatus for coastal erosion,

The present invention relates to an apparatus for preventing coast erosion and sand loss, and more particularly, to an apparatus for efficiently preventing coast erosion and sand loss caused by waves using a hydraulic jump.

In general, coastal erosion in coastal areas is caused by changes in sea level due to typhoons, storms, tides, sea level rise, and coastal facilities and artificial maritime installations.

In addition, the sand floated by the wave (wave breaking) is piled up by the flow of seawater such as lanterns in the form of a quadrangle in the front of the shoreline just before the coast, and some part of the sand flows out and sinks out of the breakwaters.

In order to prevent such damage, the breakwater structure is artificially installed to absorb the impact of waves. However, there is a problem that deposits accumulate over time and the effect varies greatly depending on the characteristics of waves and interference of currents.

As a result, a structure for restoring the coast by preventing the erosion and sand loss of the coast and inducing the accumulation of sand has been newly proposed.

For example, Korean Patent Laid-Open Publication No. 10-2015-0094423 discloses an apparatus for preventing coastal erosion and for automatically depositing lost sand.

That is, as shown in FIG. 1, a rear end 120b of an opening / closing plate 120 made of a material having a specific gravity greater than that of seawater is disposed between a pair of fixed supports 110 fixed on the bottom surface 1 of the shore, (120a) of the open / close plate is rotatably connected to the shore (130) so that the open / close board (120) rotates around the rotary shaft (130) (120a) floats and the sand can enter the shore by the seawater. When the seawater exits, the front end (120a) of the opening / closing plate contacts the bottom surface (1) of the shore by its own weight to prevent the sand from being lost .

However, this structure has a function to prevent the erosion and loss of sand because it is a structure that merely blocks the movement of the part of the sand which is swept away or carried by the water due to the rotation of the opening and closing plate 120.

Herein, the background art or the prior art described above is only intended to help understand the technical significance of the present invention as information acquired by the present inventor or derived from the present invention, It does not mean that it is widely known in the field.

KR 10-1475379 B1 (Dec.16, 2014) KR 10-1562666 B1 (October 16, 2015) KR 10-1377443 B1 (2014.03.18) KR 10-1377437 B1 (2014.03.18) KR 20-0327404 Y1 (2003.09.09) KR 10-2015-0094423 A (2015.08.19) KR 10-2014-0057783 A (2014.05.14) JP 07207638 A (August 8, 1995)

Accordingly, the present inventor considers the above-mentioned matters in a comprehensive manner and, in the idea of solving the limitations and problems of the conventional erosion and sand loss prevention apparatus, Efforts to develop a new erosion prevention and sand loss prevention system to prevent coastal erosion and sand loss due to wave (wave breaking) by reducing energy of coming wave energy and waviness wave height. As a result of constant research, the present invention was invented.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide an apparatus for preventing erosion and sand loss of a coast, which can prevent coast erosion and sand loss due to blue.

It is another object of the present invention to provide an apparatus for preventing erosion and sand loss of a coast, which is capable of reducing the energy of wave energy and waveness wave rising from the shore.

It is another object of the present invention to provide an apparatus for preventing erosion and sand loss in coastal areas, which can be stacked and clogged step by step according to changes in height of water and sand.

Herein, the technical object and object to be solved by the present invention are not limited to the technical object and purpose mentioned above, and another technical object and purpose not mentioned can be understood by those skilled in the art from the following description.

Technical Solution According to an aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: a pair of support blocks installed at a predetermined distance from a shore; At least one of which is pivotally mounted on the pivot shaft so as to be rotated by the water flow and to prevent the sand transported to the shore from flowing out to the sea due to the inhabitants of the seawater coming in and out of the sea, And a bladder formed to raise the sand transported to the shore to the shore side.

Thus, the present invention can effectively prevent the erosion of the coast and erosion of sand due to the wave (breaking wave) by reducing the energy of the wave energy and the waveness wave which are pushed to the shore.

According to a preferred embodiment of the present invention, a stake embedded in the ground is formed in order to prevent collapse, rising, sinking, or the like on the lower surface of the support block, and a knuckle through which the rotation shaft penetrates is formed on the paddle, And it can be transported to the shore according to the inhabitants of the seawater smoothly, but it can block the sand which flows out to the outer sea, and it is possible to efficiently and quickly pour the sand carried to the shore toward the shore.

According to a preferred embodiment of the present invention, a plurality of engagement holes are formed on the upper surface of the support block so as to allow upper and lower support blocks of the other protection device to be stacked and integrally joined, Since the connection pin inserted in the coupling hole is provided to maintain the laminated state between the support blocks of the protection device, it is easy to install and replace, and the sand is prevented from being stepwise blocked so that the sand transported to the coast is not washed away, And can be stably stacked.

Further, in a preferred embodiment of the present invention, the outer side surface of the support block is formed of a curved surface or an oblique sloped surface whose width gradually decreases toward the outer sea, thereby effectively reducing the energy of the wave energy and waviness pushed toward the shore The sand can be transported smoothly and naturally to the shore as the seawater drifts in and out.

An embodiment of the present invention having the means and construction for solving the above-mentioned object and the technical solution of the present invention is to reduce and dissipate the energy of the wave energy and waveness wave which are caused by interference between the support block and the paddle, , The sand transported to the coast due to the inhabitants of the seawater is prevented from flowing out to the outer sea, and the blades are repeatedly pushed to the shore by the sand transported to the shore, It can be prevented more effectively and effectively.

In addition, the embodiment of the present invention is not only easy to manufacture and install in units of modules, but also allows the support blocks of other preventive devices to be stacked at various stages and integrated together according to the height change of the sand transported to the shore , So that the sand transported to the coast can be prevented from being washed out into the sea, and the sand can be accumulated continuously and stably on the coast.

Here, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a coast erosion and sand loss prevention device according to the prior art.
2 is a perspective view showing a coast erosion and sand loss prevention apparatus according to Embodiment 1 of the present invention.
FIG. 3 is a perspective view of a coast erosion and sand loss prevention apparatus according to the first embodiment of the present invention.
4 is a schematic view for explaining the operation and the operation principle of a coast erosion and sand loss prevention apparatus according to Embodiment 1 of the present invention.
5 is a perspective view showing a coast erosion and sand loss prevention device according to a second embodiment of the present invention.
6 is a cross-sectional view showing a coast erosion and sand loss prevention apparatus according to Embodiment 2 of the present invention.
7 is a schematic view for explaining an operation and a working principle of a coast erosion and sand loss prevention apparatus according to Embodiment 2 of the present invention.

Hereinafter, embodiments according to the present invention will be described more specifically with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of the functions of the present invention, and they are to be construed to mean concepts that are consistent with the technical idea of the present invention and interpretations that are commonly or commonly understood in the technical field of the present invention.

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

Furthermore, the term " and / or " in this specification is intended to encompass any combination of the plurality of listed items or any of the plurality of related items listed, and when a part includes certain elements, The present invention is not limited to the above-described embodiments.

That is, it is to be understood that the features, numbers, steps, operations, elements, parts, or combinations thereof described in the present specification are meant to beexistent, and that one or more other features or numbers, step operation components, And does not exclude the presence or addition of one or more of the foregoing.

And terms such as top, bottom, top, bottom, or top, bottom, top, bottom, etc. are used for convenience in distinguishing relative positions in each component. For example, the upper side of the drawing may be referred to as an upper side and the lower side as a lower side.

Also, the terms first, second, etc. may be used to describe various components. That is, the terms first, second, etc. may be used for the purpose of distinguishing one component from another. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and the second component may also be referred to as a first component.

2 and 3, the main configuration of a coast erosion and sand loss prevention apparatus according to the first embodiment of the present invention mainly includes a support block 10, a rotation shaft 20, a paddle 30, and a blade 40 ).

The support block 10 is installed as a pair of left and right facing each other at a certain distance from the shore, thereby reducing the energy of the wave energy and waveness propagation pushed to the shore, and the sand carried to the shore due to the in- So that it does not leak out to the sea.

In other words, the support block 10 is made up of heavy materials such as concrete structure, steel material, concrete filled FRP box, etc., and is mounted on the shore, thereby causing a collision during ebb tide. Energy and waveness degrades the energy of the wave, and also causes a sudden increase in water depth and energy loss.

A stake 11 is formed on the lower surface of the support block 10 so as to prevent falling, rising, sinking, and the like.

In addition, the side surface of the support block 10 in the outer sea direction is formed as a curved surface or an oblique sloped surface that becomes gradually narrower toward the outer sea side.

In other words, the support block 10 effectively reduces the energy of the wave energy and waviness waves that are pushed to the shore, and guides the sand to the shore so that the sand can be carried smoothly and smoothly to the shore. It is preferable that the other side (opposite side) is formed into a hexagonal shape having a trapezoidal shape at right angles.

In addition, the support block 10 is preferably rounded at its corners or smoothly curved or streamlined to prevent accidental injury to a passerby during a sea bath.

The upper surface of the support block 10 is formed with a seating groove 13 for supporting a longitudinal end portion of the rotary shaft 20 and fixing the same at a predetermined position. On the seating groove 13, The holder 15 is fixed to hold it firmly.

In this case, the cross-sectional shape of the seating groove 13 can be formed so as to rotatably surround the rotary shaft 20, and the bearing groove 13 can be provided with a bearing for smooth and easy rotation of the rotary shaft 20 You may.

The rotary shaft 20 is installed at a constant height across the support blocks 10 to support the pivoting action of the paddles 30 and the blades 40.

That is, both ends of the rotary shaft 20 in the longitudinal direction are mounted on the holder 15 in such a state that the rotary shaft 20 is seated in the seating groove 13 of the support block.

Both ends of the rotary shaft 20 in the longitudinal direction may be mounted on the seating groove 13 so as to smoothly and freely rotate with respect to the support block 10.

At least one paddle 30 is installed on the rotary shaft 20 to block the sand that is carried to the coast according to the in and out of the seawater and outflows to the outer sea.

That is, the paddle 30 hangs to open and close the space between the support blocks 10 while rotating and changing the angle around the rotary shaft 20 by the water flow.

The paddle 30 is integrally formed with a knuckle 31 through which the rotary shaft 20 passes, so that the paddle 30 can rotate freely around the rotary shaft 20.

In other words, the paddle 30 is locked in the seawater, the top end of the upper part hangs on the rotary shaft 20, and the lower free end of the paddle 30 stands up more deeply on the bottom of the shore than the support block 10, The free end can naturally oscillate about the rotary shaft 20 and rotate to transport the sand toward the shore.

When a plurality of paddles 30 are provided along the longitudinal direction of the rotary shaft 20, the paddles 30 and the paddles 30 are spaced between the paddles 30 to guide the paddles 30 to rotate freely without interference It is preferable to mount the gap retaining ring 21.

The paddle 30 preferably has a structure capable of rotating freely around the rotary shaft 20, but a part of the paddle 30 may be fixed to the rotary shaft 20 so that the rotary shaft 20 can rotate at the same time Of course.

On the other hand, the paddle 30 is formed by a vertical surface on one side facing the coast, and a surface protruding from the opposite side on the opposite side, thereby forming a convex surface by the Bernoulli's theorem when entering the sea. The pressure on the bottom surface is increased, and the sand on the bottom surface instantaneously rises, so that it can be transported to the coast more naturally and easily.

The blades 40 are integrally formed on both sides of the paddle 30 for raising the sand transported to the shore toward the shore according to the in and out of seawater.

That is, the blade 40 rotates together with the paddle 30 around the rotary shaft 20, and lifts the sand in the lower part of the water to a higher place and carries it toward the coast.

The operation and operation principle of the apparatus for preventing erosion of sand and sand loss according to the present invention constructed as described above will be described as follows.

First, the energy of the wave energy and the waviness wave which the support block 10 pushes to the shore is reduced by contact interference, and the flow velocity of the seawater is sharply reduced, It can be a barrier to prevent leakage to the outer sea.

As shown in FIG. 4 (a), the free end of the paddle 30 is erected in such a manner that the free end of the paddle 30 sticks to the bottom of the shore by its own weight. When the seawater enters the shore, The sand on the bottom surface is instantaneously floated up to the coast, and when the seawater is pushed toward the sea, the sand is vertically closed by its own weight as shown in FIG. 4 (b) As a result, the sand can be automatically pushed down to the sea.

At this time, since the blade 40 efficiently raises the sand carried to the coast toward the coast, it is possible to effectively prevent coast erosion and sand loss due to wave (breaking waves).

That is, the sand on the floor rising instantaneously due to the flow of the paddle 30 can be pushed up more strongly toward the coast by the action of the blade 40, and sand can be accumulated more quickly and efficiently on the shore.

As shown in FIGS. 5 and 6, according to a second embodiment of the present invention, a device for preventing erosion of sand and sand loss according to the second embodiment of the present invention includes a plurality of modules stacked in a module unit, A plurality of engagement holes 12 are formed in the support block 10 so as to penetrate up and down. The engagement holes 12 are formed in the support block 10 (10a, 10b) A connecting pin 50 is inserted.

When the sand transported toward the coast is accumulated at a certain height by the action and operation of one preventive device, the support blocks 10a and 10b of the other preventive device are stacked on the support block 10 in a stepwise manner So that they can be integrally combined.

That is, the paddles 30a and 30b of the other preventive devices are rotated and angularly changed around the respective rotary shafts 10a and 10b according to the stacking height of the sand, It is possible to open and close the space between the support blocks 10a and 10b.

7 (c), when the seawater enters the coast, the paddles 30a and 30b are rotated by the force, and momentarily float the sand accumulated in the front, And when the seawater is pushed toward the sea, it is vertically closed by self weight as shown in FIG. 7 (d) to block between the support blocks 10a and 10b, and the other part is buried in the sand, ) 10a, the sand can be automatically pushed down to the outside sea.

Therefore, even if the sand transported to the coast is accumulated higher than one prevention device, it can be prevented in a stepwise manner so as not to be washed away by the sea, and the sand can be accumulated continuously and stably on the coast.

The coupling hole 12 is formed in the form of a counterbore or countersink so that the coupling pin 50 passes through the body of the coupling pin 50 when the coupling pin 50 is inserted, can do.

Further, the engaging holes 12 can be plugged with the plug 14 to prevent the sand from entering and clogging.

Here, among the components related to the coast erosion and sand loss prevention device according to the second embodiment of the present invention, the components having the same or similar operational effects as those of the first embodiment described above use the same reference numerals as those of the first embodiment , Repetitive and detailed explanations thereof are omitted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments or constructions. Various changes and modifications may be made without departing from the spirit and scope of the invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Therefore, it should be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

10: Support block 11: Steak
12: engaging hole 13:
14: Plug 15: Holder
20: rotation shaft 21: gap retaining ring
30: Paddle 31: Knuckle
40: blade 50: connecting pin

Claims (4)

A pair of support blocks arranged at regular intervals on the shore;
A rotating shaft provided at a predetermined height across the support blocks;
A plurality of paddles hanging from the rotating shaft to rotate by the water flow and preventing the sand transported to the coast from flowing out into the sea due to the inhabitants of the seawater;
A blade formed on both sides of the paddle so as to raise the sand carried to the shore toward the shore in accordance with the in and out of the seawater; And
A gap maintaining ring for guiding the paddles to rotate freely without interfering with each other by maintaining a gap between the paddles;
/ RTI >
A plurality of engagement holes are formed on the upper surface of the support block so as to vertically penetrate the support block in order to stack the support blocks of other preventive devices and to integrally join the support blocks,
And a connection pin to be fitted in the coupling hole to maintain the laminated state between the support block and the support block of the other protection device,
The apparatus for preventing erosion and sand loss on the shore is provided with a stake which is buried in the ground in order to prevent the bottom of the support block located at the lowermost part from being collapsed, settled, settled, etc. in a state in which the support block and the support block of another preventive device are laminated.
The method according to claim 1,
And a knuckle through which the rotating shaft passes is formed on the paddle.
delete The method according to claim 1,
Wherein the outer side surface of the support block is formed of a curved surface or an oblique sloped surface that gradually becomes narrower toward the outer sea side.

Images