KR200428239Y1 - Environmentally favorable underwater structure using natural stones - Google Patents

Abstract

The present invention is an underwater structure manufactured to have a shape like a natural reef by irregularly arranging 1 mm to 600 mm of natural stones so as to be integral with the concrete block having a plurality of columns and the upper part of the block. The concrete has a compressive strength of 21 MPa It exhibits a high strength of not less than 40 MPa, and the concrete block is characterized by having various shapes such as square, pentagon, hexagon, and circle.

It is characterized by forming a natural microbial habitat space by placing natural stones, such as lava and limestone, to have an irregular shape and voids so as to be integral with the concrete block. In addition, by installing a plurality of grooves on the side of the concrete block, it is possible to inhabit shellfish, provide an underwater structure as a unit module to enable the installation of seaweed rope, each module is installed at intervals of 1 m to 2 m It is characterized in that it is arranged to generate vortices and topographic waves between the side walls. This structure is used for underwater ecological restoration and marine deforestation.

Natural stone, ecological restoration, marine forest, artificial reef

Description

Eco-friendly underwater structure using natural stones {Environmentally favorable underwater structure using natural stones}

1 is a perspective view of a stone module structure

2 is a lava stone perspective view

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

10; Natural stone

20; home

30; Concrete block body

40; Carrying ring

50; Pillar

The present invention relates to aquatic structures for underwater ecological restoration and marine forests using natural stones. In the case of a conventional underwater structure, structures that meet various purposes and functions have been developed, such as water purification function, fish forgery function, shellfish growth function, marine forest formation function. Investing in the facilities of these underwater structures is increasing, and as a result, they have gained tangible results such as catch productivity, marine biodiversity, and marine ecological restoration.

In the case of artificial reefs aimed at proliferating fish and shellfish, recent rapid R & D investment has been made. In the case of patent application 10-1999-0028943 (an artificial reef for shellfish), it provides a space for reef settlement resources such as shellfish and sea urchins. A large number of natural stones of 15 cm to 25 cm are put in a concrete box to form a certain void, providing a habitat for shellfish in the void, but an artificial shape design and stability against typhoons are pointed out. have.

Utility Model Application 20-2000-0036344 (Artificial Reef Using Gabion) is presented for use as a natural reef by putting natural stone in a metal net, but it has the advantage of using natural stone, but the metal net is corrosive or its structure shape is disadvantageous for investment. There is this.

Patent application 10-1999-0029812 (box artificial artificial reef) has the advantage of dualizing the structure of the reefs up and down to create a habitat space for fish in the upper part, shellfish in the lower part, was developed for a specific fish species. However, there is a disadvantage in that the shape is unified to form an artificial shape, as in the conventional reefs, and the manufacturing is difficult because the inside is complicated.

As described above, artificial reefs for the propagation of fish and shellfish as typical representative underwater structures are manufactured in a specific shape using steel, concrete, ceramics, etc. It was developed to act as a natural grass. However, there is a significant difference in the design from the natural shape of natural grass.

Conventional artificial reefs are expensive because they form a specific shape or use expensive materials such as steel and ceramics. In other words, if the price of fish and shellfish dropped for the purpose of breeding fish and shellfish is significantly high, the price of high raw materials is pointed out because of the low investment value.

Underwater structures should be given priority to stability, such as movement, conduction and settlement. That is, in the case of underwater structures installed in the depth range of 10 m to 30 m, since they are primarily affected by typhoons and algae, they should have a weight and shape sufficient to satisfy stability.

Underwater structures are to exhibit sufficient intended function. In other words, it should have the function to fulfill the purpose of fish catching, shellfish breeding, marine forest formation, coral restoration, etc.

In the present invention, in order to solve the above technical problems, natural stone is used as an environmentally friendly material. Underwater structures using natural stones should first exhibit a natural shape similar to natural grass. Second, the price should be cheap and widely used. Third, the stability against typhoons should be high. Fourth, the habitat of various aquatic organisms should be provided.

In order to solve the above technical problem, the present invention is a natural reef by irregularly arranging the concrete block 30 having a plurality of pillars 50 and the natural stone 40 of 1 mm to 600 mm size to be integrated on the block It provides an underwater structure manufactured to have a shape such as.

At this time, the concrete is characterized by exhibiting a high strength of more than 21 MPa 40 MPa compressive strength.

In addition, the natural stone 10 is characterized by forming a habitat of marine microorganisms consisting of lava or limestone having an irregular shape and voids.

In addition, the concrete block 30 is characterized by having a variety of shapes, such as square, pentagon, hexagon, circular.

In addition, by installing a plurality of grooves 20 on the side of the concrete block 30, it is possible to inhabit shellfish, to provide an underwater structure to enable the installation of seaweed rope.

A plurality of grooves 20 or projections formed on the side of the concrete block 30 increases the specific surface area of the structure, and is used for shelling and winding of seaweed ropes (ropes in which seaweeds live). If the seaweed rope is inserted into the side wall of the concrete block 30 and fixed with a rope fastener, the seaweed grows and is easy to take root. In the center of the side wall of the concrete block 30, a steel ring 40 necessary for lifting is installed. The concrete block 30 may be manufactured in various shapes such as triangle, square, pentagon, hexagon, circle, and the like.

The concrete block 30 of the lower body is manufactured so that the compressive strength of 21 MPa or more 40 MPa or less to exhibit the conventional concrete strength of 21 MPa or more for conventional fish. In the case of conventional concrete for reefs, the problems of breakage due to relatively low strength and dissolution of strong alkalis have been pointed out as major problems in the habitat of marine life.

If the eco-friendly underwater structure manufactured as described above is installed in the region, various marine microorganisms can inhabit between the gaps and gaps of the natural stone 10, and can naturally restore the marine ecosystem.

Natural stone 10 may use a variety of raw stones, such as lava stone, limestone. However, the size of 1 mm to 600 mm is easy to transport, irregular in shape and has numerous voids to provide a good environment for microorganisms to inhabit.

The underwater structure is divided into each module (stone module structure; FIG. 1) to form a single body by narrowing the distance between the modules, or irregularly arranged in the range of 1 m to 2 m to irregularly install natural stones on the bottom and sidewalls of the module. do. After a certain period of common time, algae and shellfish inhabit a similar shape and function to natural grass. Since the module plays a role like a valley, it can create vortices and topography, which also helps to fish.

Example

When the embodiment for producing an underwater structure using the natural stone 10 proposed in the present invention is shown in order.

① Reinforce the bars and assemble the formwork.

② Place high strength concrete in the formwork as shown in the example below (Table 1).

Coarse aggregate (kg / m ³ ) Fine aggregate (kg / m ³ ) Cement (kg / m ³ ) Admixtures (kg / m ³ ) Admixture (kg / m ³ ) Water (kg / m ³⁾ Compressive strength (MPa) Slump (cm) Remarks 977 708 350 50 3.5 180 35 15

③ Lava size of 1 mm to 600 mm is irregularly placed on the concrete.

④ spray the stone powder on the concrete block 30, cover the concrete surface with a thickness of 1 mm ~ 5 mm.

⑤ After curing for 28 days, demolding the formwork, to produce the finished product (unit module; Fig. 1).

After the reinforcing bars and formwork as in the embodiment, and the high-strength concrete is cast to produce a concrete block 30, irregularly arranged lava on the top, spraying stone powder on the surface so that the concrete is not exposed when observed from the top It is characterized in that the composition to form a natural reef. High-strength concrete is prepared using a mixed material as shown in Table 1, it is preferable to use a fine powder such as silica fume, blast furnace slag powder, fly ash powder. In Table 1, silica fume was used as the admixture, high performance AE water reducing agent was used as the admixture, and the compressive strength was measured to be 35 MPa for 28 days. The reason for manufacturing the concrete block 30 with high strength is to raise durability and to prevent alkali elution of concrete.

The present invention, first, proposes an underwater structure in which natural stone is installed on top of concrete blocks of various shapes, and after dropping underwater, after a certain period of time, there is an advantage of showing a similar shape to natural grass. That is, there is an advantage of providing a shape such as natural grass that is formed naturally, rather than artificial grass artificially formed. Secondly, since it is left untreated natural stone, such as porous lava stone with many voids, which is not suitable for concrete, the price is significantly lower than that of conventional fish. Third, there is an advantage of providing a habitat for various marine microorganisms between the gaps and voids of irregularly arranged natural stone. Fourth, in the case of stones dropped by the dialysis business, movement and conduction by typhoons are frequent, but in the case of the underwater structure according to the present invention incorporating natural stones into one module, stability against typhoons is high due to high weight and stability. outstanding. Fifth, because of using natural stone and high-strength concrete, the service life of the marine structure is long. Sixth, it can be used as a basic module for restoring aquatic ecosystems, and is suitable for coral restoration, marine forest formation, and the development of biological resources.

Claims (5)

An underwater structure comprising a concrete block having a plurality of columns and a natural stone of 1 mm to 600 mm in size so as to be integrated on the block. The underwater structure according to claim 1, wherein the concrete exhibits a high strength of 21 MPa or more and 40 MPa or less. The underwater structure of claim 1, wherein the natural stone is composed of lava or limestone having irregular shapes and voids to form a habitat for marine microorganisms. The underwater structure of claim 1, wherein the concrete block is at least one of a rectangular, pentagonal, hexagonal, and circular shape. The underwater structure according to claim 1, wherein a plurality of grooves are provided on the side of the concrete block to enable shellfish breeding and to install seaweed ropes.

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