JPH0978553A - Marine organism adhesion preventing device for submarine structure and adhesion preventing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the adhesion of organisms to a wall face near the ebb and flow zone with a physical natural means without using manual work by vertically stretching a guide wire along the wall face of an object structure, and supporting a grinding/polishing/cleaning float on the guide wire. SOLUTION: A guide wire 10 is vertically stretched along the wall face of an intake revetment concrete parapet 101, and a rectangular solid grinding/ polishing/cleaning float 1 is supported on the guide wire 10. The float 1 vertically rubs the wall face via the ebb and flow of tide and wave motion, and the wall face is rubbed by a brush fitted to the float 1. The brush face of the float 1 shocks the wall face after the rolling of waves in the range of the spring effect of the stretched guide wire 10. The adherence base of the marine organisms stuck to the wall face is disturbed. The adherence of the organisms to the wall face near the ebb and flow zone can be prevented by a physical natural means without using manual work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to marine organisms (mainly mussels, barnacles, seaweeds, etc.) that grow or propagate by adhering to the wall surface of a structure (undersea structure) that is in contact with seawater.
And a method for preventing settlement using the same. Further, the present invention relates to an apparatus for preventing the growth of marine organisms on a wall surface of an undersea structure near the sea surface in an open environment sea area such as a quay, a jetty, and a seawall, and a method for preventing the growth thereof.

[0002]

2. Description of the Related Art At the interface of various oceans and harbor facilities that come into contact with seawater, marine organisms that live in seawater attach to it and grow or breed, impairing the facility's function and aesthetics, and adding excessive weight. Marine organisms are separated from the wall surface of the structure due to collisions with marine debris, fall off and accumulate at the bottom to make the water depth shallow, or move by tidal current to block water channels. There is.

As measures for preventing the adhesion of these marine organisms,
Add chlorine or hypochlorite, apply antifouling paint,
Methods such as coating antifouling metals, generating chlorine or hypochlorite ions by electrolysis of seawater, and producing toxic copper ions by electrolysis using a copper anode in seawater have been proposed.

Although any of the methods is effective as a means for preventing the adhesion of marine organisms, it is the death of marine organisms due to the production of toxic ions, and the excessive production of these toxic ions cannot be overwhelmed by the concern about secondary environmental pollution. Generation and use of these toxic ions, a long period of time in forced to not give become absolutely excessive concentration for proper concentration maintenance, can not be avoided much of the cost and toil in facilities and maintenance management. Today, its use is restricted or banned because it is more toxic than marine life's anti-adhesion effect and leads to environmental destruction. Although a non-toxic and pollution-free antifouling method is under development, life and cost are issues for practical use.

The antifouling measures that have been put into practical use at present can be installed and implemented on the structures (ships, intakes, intake channels, etc.) of facilities whose use range is limited, but they have been released. Facilities with a wide range of environmental waters and target areas (quays, piers, piers,
In steel piles, etc., the diffusion of chemicals and toxic ions is rapid and the amount of use becomes huge, and environmental pollution due to loss to the outside of the system cannot be avoided. In addition, the conventional periodical removal and cleaning work of marine organisms adhering to the wall surface of the structure has a problem of the work itself (so-called 3K work), and it is often used for recovery, treatment, and disposal of the removed organisms. Therefore, it is necessary to eliminate such work as much as possible or to reduce the work frequency and work time as much as possible, but there is no suitable method for large structures in the open marine environment. On the other hand, the reality is that it is hardly implemented.

In order to prevent marine organisms from adhering to the tidal zone (near the sea surface) of structures in such open environment sea areas, it is necessary to rely on some physical means that is easy to construct and does not pollute the environment. As such a physical means, a cleaning blade is attached to the inner surface of the steel annular float as a measure to prevent the adhesion of marine organisms to the tidal zones of the self-supporting steel piles that have actually been driven into the seabed (Actual Publication Sho 60- No. 3132), a brush attached to the inscribed surface of the annular floating body facing the outer surface of the steel pile (Jitsuko Sho 59-4).
No. 1230) or an elastic annular float (not including a cleaning blade or a brush) such as foamed polyethylene (Japanese Patent Publication No. 2-31173) is proposed. In both cases, the outer surface of the steel pile that is inscribed is swung up and down by swinging a donut-shaped float that is concentric with the target steel pile up and down by utilizing the tide level and waves due to the ebb and flow of the tide. These technologies are targeted at self-supporting structures constructed in seawater, all of which are surrounded by an annular float.
It is easy to secure a space (clearance) between the wall surface of the structure to be cleaned and the float that inscribes it (including the case where a cleaning blade or a brush is used). Can be cleaned.

On the other hand, as a technique utilizing a float for the purpose of aesthetics and cleaning of wall surfaces of concrete and steel structures, a guide rail is installed upright on the side of the water area of the seawall in Japanese Utility Model Publication No. 4-22511. There is disclosed a technique in which a vegetation pot is provided on the sea side, and a float which moves up and down according to the tide level, in which a supporting member with a cleaning brush is attached to the side facing the revetment wall, is provided.

For the open environmental sea area, the structure having a huge surface area and the structure connected to other structures, which is the object of the present invention, the above-mentioned simple substance was laid in seawater. It is practically impossible to attach an annular float (a floating body surrounding the outer circle of a steel pile) that holds a structure (self-supporting type). One of the keys is how to keep the space between the float and the wall surface of the structure within a predetermined range against the vertical movement due to the ebb and flow of the tide and the fluctuation due to the wave motion. Moreover, there is a demand for a means that can be easily constructed, can suppress or prevent marine organisms from forming on the structure at a low cost without spoiling the appearance.

As a means for cleaning the sea wall of an underwater structure, a guide rail is installed on the revetment wall in the above-mentioned Japanese Utility Model Laid-Open No. 4-22511, a vegetation pot is placed on the sea side, and the sea wall is opposed to the revetment wall. A technique using a float that moves up and down according to the tide level, in which a supporting member with a cleaning brush is attached to the cleaning side, has been proposed.

That is, a float with a vegetation pot is installed mainly for the purpose of maintaining the beauty of the seawall. Attachment of the backside cleaning brush is an additional measure. It is an attempt to grow flowers in the float. Naturally, vegetation has problems with soil, fertilizer and salinity, and in addition the float's own weight significantly exceeds the specific gravity of seawater. Therefore, in order to support the float with the vegetation pot and facilitate the vertical swing, sufficient consideration must be given to the guide rail, the guide roll, the support member, the support structure (including the strength) and the like. The cleaning brush on the back side is fixed to a support member that interlocks with the float. The wall surface of the structure is rubbed by the vertical movement depending on the tide level of the float. That is, since the brush is fixed to the support member, the brush is in surface contact with the wall surface of the structure, and the polishing is performed by vertical movement due to the tide. When seawater suspended matter or dirt is caught between the wall surface of the structure and the brush, the brush is fixed by a guide rail, a guide roll, a supporting member, a supporting structure, and the like. Since it does not follow the lateral sway caused by, it becomes difficult to remove it to the outside of the system, and sometimes clogging of foreign matter may interfere with the movement of the guide roll.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of these problems of the prior art, and is a physical means free from secondary environmental pollution by drugs and toxic ions. A device for preventing marine organisms from adhering to underwater structures capable of preventing the growth of marine organisms on a wall surface near a tidal zone of a structure having a large surface area, particularly on a wall surface substantially vertical to the sea surface, and the device. The purpose is to provide a method for preventing settlement used.

[0012]

The above objects of the present invention can be achieved by the following marine organisms epidemic prevention device. That is, the present invention is a marine organism settling prevention device for preventing the settlement of marine organisms adhering to the wall surface near the sea surface of an undersea structure constructed in an open or near-environmental sea area. Adjust the specific gravity to be close to that of seawater by sealing water, and on the surface of the rectangular parallelepiped float body made of a foam material whose surface is reinforced with epoxy resin or FRP, facing the wall surface of the structure, the fiber brush and the brush deformation prevention An undersea structure having a spacer made of a hard elastic body, and a rectangular parallelepiped polishing and cleaning float having a plurality of guide pipes attached to the float body, and fitted to a guide wire having a spring property through the guide pipe. There is a marine organisms epiphytic prevention device.

Further, the present invention prevents the growth of marine organisms adhering to the wall surface near the sea surface of a non-self-supporting steel pipe pile reinforced by other structural materials constructed in an open or near-environmental sea area. An apparatus for preventing the growth of marine organisms, which is made of a foam material having a specific gravity adjusted to approximate that of seawater with a weight or internal sealing water, and the surface of which is reinforced with epoxy resin or FRP. The arc type float main body has a spacer made of a fiber brush and a hard elastic body for preventing the brush deformation on the inner surface of the arc facing the steel pipe pile wall surface, and a plurality of guide pipes are attached to the float main body. An apparatus for preventing marine organisms from adhering to an undersea structure, which is obtained by fitting a circular arc type cleaning and sweeping float through a guide pipe to a guide wire having a spring property.

Further, the present invention is a marine organism epiphytic prevention device for preventing marine organisms from adhering to a wall surface near the sea surface of an undersea structure constructed in an open or near-environmental sea area, Adjusting the specific gravity to approximate that of seawater with a weight or internal sealing water, consisting of a foam material whose surface is reinforced with epoxy resin or FRP, and has a brush made of fiber on the entire cylindrical side surface of the cylindrical float body with a hole penetrating the center. Rope or wire having sliding metal fittings at both ends is connected to the plurality of cylindrical polishing and cleaning floats, and the sliding metal fittings at both ends are respectively fitted to two guide wires having spring property. It is a device for preventing marine organisms from adhering to undersea structures.

Further, the method for preventing marine organisms from growing in a subsea structure according to the present invention uses the above marine organisms settlement preventive device, wherein the settlement preventive device is floated on the sea surface to ebb and flow tides or waves. According to the above, the anti-growth device slides the wall surface of the target structure and makes an impact.

Next, an example of the scouring float, which is a main member of the marine organism settlement preventing apparatus of the present invention, will be described with reference to FIG. FIG. 1 is a structural diagram showing an example of a rectangular parallelepiped scouring and cleaning float used for an intake revetment concrete parapet.

This scouring float 1 is a float main body 2 made of a foam material having a reinforced surface, a fibrous brush 4, and a function of preventing the fibrous brush from being deformed and maintaining a distance from the wall surface of the target structure. It is composed of a spacer 5 and a plurality of guide pipes 9 for passing the guide wire 10. Styrofoam or polyethylene foam is preferred as the foam material constituting the float body made of a foam material having a reinforced surface, and epoxy resin or fiber reinforced plastic (FRP) is preferred as the material for reinforcing this. The fibrous brush may be natural fiber or synthetic fiber, but nylon or polyethylene is suitable. As the spacer, a hard elastic body made of synthetic rubber or synthetic resin is suitable.

In FIG. 1, the scouring float 1 is a 300 mmW × 100 mmT × 20 made of expanded polystyrene.
Float body 2 whose surface is reinforced with FRP in a rectangular parallelepiped foam material of 00 mmL and 10 mmT × 200 mmW ×
0.3 mm on a polyvinyl chloride (PVC) substrate 3.
It is configured by combining 10 brush plates 6 incorporating a 4 mmφ nylon brush 4 and a hard PVC spacer 5. The brush plate 6 is attached and fixed to the surface of the float main body 2 facing the revetment parapet with SUS bolts and nuts 7.

Further, a protector 8 (for example, SS400 + Zn thermal spraying) is attached to the upper and lower parts of the float body 2 for adjusting the buoyancy and protecting the shock. further,
Two guide pipes 9 made of SUS are provided from the upper part to the lower part of the float body 2 with a protector 8 in between. A guide wire 10 made of SUS is passed through the guide pipe 9, and the guide wire 10 is tensioned vertically along the wall surface of the target structure to prevent the float 1 from leaving the wall surface of the structure.

By installing the apparatus incorporating the float 1 shown in FIG. 1 along the wall surface of the structure, the float 1
Is rubbed up and down on the wall surface of the structure due to the ebb and flow of the tide, and the wall surface is rubbed by the brush 4 attached to the float 1. In addition, the brush surface of the float 1 impacts the wall surface of the structure within the range of the spring effect of the tensioned guide wire 10, following the rolling of waves. As a result, the marine organism-adhering substrate attached to the wall surface of the structure is disturbed, so that bacteria, organic matter, spores or larvae can be prevented from adhering.

[0021]

Next, the present invention will be specifically described based on examples. Example 1 FIGS. 2 and 3 show an example in which the marine organism settling prevention apparatus of the present invention equipped with a cuboidal float for cleaning (FIG. 1) is attached to a water intake revetment concrete parapet.

The water revetment concrete parapet has a revetment length of several hundred meters, and the processing cost for human work of the inhabited marine organisms is close to 100 million units. An apparatus equipped with FIG. 1 of the present invention was installed on a part of the seawall to test the effect of suppressing the adhesion of marine organisms.

FIG. 2 shows a situation in which four sets of the scouring float 1 of FIG. 1 are arranged on the intake revetment concrete parapet 101. Each of the scouring floats 1 is supported by two guide wires 10, and the guide wire 10 is a revetment 101.
It is fixed to an upper support fitting 51 attached to the land upper structure 102 and a lower support fitting 53 attached to a portion below the sea surface of the intake revetment steel sheet pile 103 via a stopper 52. A turnbuckle 54 (made of SUS) for adjusting the length of the guide wire 10 is provided just below the upper support fitting 51.
Is installed.

FIG. 3 is a sectional view of FIG. Float 1
The rocking width (polishing range) in the water depth direction was adjusted by the stopper 52 in the range of the maximum tide level (H.W.L.) +2000 mm to +1000 mm (8.0 m ² ).

As a result of installing this device in early spring and operating it for about 6 months, almost no marine life was found on the wall surface on which this device was installed, while the surrounding wall surface where this device was not installed was It is covered with shellfish and seaweed such as mussels and barnacles,
The anti-engraftment effect of the device of the present invention was clear.

Example 2 The scouring float 1 of Example 1 was supported by a guide wire 10 directly attached to the target structure. In the present embodiment, a guide frame system that can reduce the installation work underwater and easily adjust the clearance between the float 1 and the wall surface of the target structure was examined.

FIG. 4 is a front view in which the present device is attached to a part of the same revetment parapet as in the first embodiment by the guide frame method. The guide frame 11 is manufactured in a factory according to the area and size of the surface to be polished of the target structure (revetment concrete parapet) 101. On the other hand, the float 1, the guide wire 10 and various members are subjected to reinforcement, surface antifouling treatment (application of antifouling paint, etc.), etc.
Both ends of 0 are attached to and integrated with L-shaped angles (not shown) at the upper and lower ends of the guide frame 11. Steel is suitable for the material of the guide frame 11 in consideration of workability and cost, but FR is considered in consideration of the size and life of the apparatus.
P, various engineering plastics or SU
You may manufacture from S etc.

The float device for polishing and cleaning incorporated in the guide frame 11 was transported to the site where the target structure was located, and was attached and fixed by anchor bolts at a predetermined position marked on the wall surface of the structure in advance. The clearance between the float 1 and the wall surface of the target structure was adjusted by adjusting the guide wire 10 passing through the float 1 with an L-shaped angle (not shown) attached to the guide frame 11. It should be noted that the time from the time of delivery to the site to the completion of installation was 2/3 or less as compared with the case of the guide wire method of Example 1.

When this apparatus was carried out for 6 months, as in Example 1, almost no adhesion of marine organisms to the wall surface of the target structure on which the apparatus was installed was observed, and the effectiveness of the apparatus of the present invention was confirmed. It was obvious.

Example 3 In Examples 1 and 2, four sets of polishing and sweeping float devices were arranged in a horizontal row within a maximum tide level of +2000 to +1000 mm of the target revetment concrete parapet to a height of about 1 m, to ebb and flow the tide. It is an example in which the device is slid up and down by wave motion to clean and clean the concrete wall surface.

However, marine organisms not only adhere to the tidal zone of the structure, but also a large amount adhere to the wall surface that is always below the sea level below the lowest tide level (L.W.L.). In particular, it tends to adhere to the lowest tide up to -3000 mm. Therefore, in the present example, a scouring float device was attached to the concrete wall surface of the intake curtain wall in a range of about 5 m from the lowest tide level of +2000 to -3000 mm.

It should be noted that it is difficult to cover a depth of 5 m width when the float 1 of the cleaning and cleaning float device is in a single horizontal row because of the tidal level of the tide. ) Is adopted as a guide frame method. FIG. 5 shows the basic guide frame type multistage polishing and cleaning apparatus.

This guide frame 11 is approximately 5 m ×
It is a steel frame of 4 m and also has a rectangular parallelepiped blasting float 1
Is 300mmW × 100mmT × made of Styrofoam
It is composed of a 1800 mmL float main body 2, a brush plate 6 and the like. Six floats 1 are mounted in the frame of the guide frame 11 via the guide pipe 9a and the guide wire 10.

The clearance between the float 1 and the wall surface of the target structure is adjusted by the guide wire 1 passed through the float 1.
0 was adjusted by an L-shaped angle (not shown) attached to the guide frame 11.

Then, the guide frame 11 was fixed to the preset position of the wall surface of the target structure with insulating bolts by using the fixing fittings 51a and 53a attached to the guide frame 11.

Based on the above procedure, as shown in FIG. 6, a float apparatus for polishing and cleaning, in which six floats 1 in 2 rows × 3 columns are incorporated in the concrete parapet of the intake curtain wall, Three sets were installed in parallel.

As a result of carrying out for about 6 months, almost no marine organisms were observed on the wall surface on which the float device of the present invention was installed as expected, and mussels and barnacles accumulated on the surrounding wall surface of 10 cm or more. It was in sharp contrast to what he was doing. In addition, the size of the guide frame is made to correspond to the area and depth of the target structure, and the floats are installed in multiple stages in parallel to prevent or prevent the growth of marine organisms on the underwater wall of the structure near the sea surface. It is possible.

Example 4 Steel pipe piles are widely used for foundations and reinforcement of piers, piers, steel sheet pile quays, etc., but they are not always self-supporting and non-self-supporting in which steel pipe piles are mutually connected by reinforcements. There are many types. A donut-shaped float brush that is concentric with the steel pipe pile can be used to prevent the adhesion of marine organisms near the sea surface of a cylindrical self-supporting steel pipe pile, but it is difficult to apply it to a non-self-supporting type.
Therefore, the arc-shaped float device of the present invention was used to confirm the adhesion preventing effect.

That is, as shown in FIG. 7, an approximately semicircular arc type polishing / cleaning float 1a was prepared and used. Then, the guide wire 10 is passed through the guide pipe 9 attached to the float 1a, as shown in FIG.
As shown in, the guide wire 10 is tensioned by the support fittings 51 and 53 provided on the upper and lower portions of the target steel pipe pile,
The gap between the brush 4 and the wall surface of the steel pipe pile was kept constant. Note that FIG. 8 is a plan layout view seen from above when the arc-type polishing and cleaning float 1a is attached to a steel pipe pile. FIG.
Is a side view of the same.

Even after about 4 months have passed since the installation in the early spring when marine organisms are most active, no adhesion of marine organisms was observed on the wall surface of the steel pipe pile equipped with the float device for cleaning and cleaning of larvae. I could not see any settlement.

Further, since the float 1a is supported by tensioning the guide wire 10 having a spring property, the brush 4 impacts the steel pipe pile wall surface every time it is swayed by waves. Due to the synergistic effect of, even the establishment of marine larvae was not observed.

Embodiment 5 In the rectangular type or arc type float described in the above examples, the brush is attached only to one surface facing the target structure.

In order to brush and clean the entire surface of the float, it is necessary to rotate the float depending on the tide level and wave. However, when the float is a sphere, the rotation is easy, but the polishing and cleaning efficiency is poor because it is in point contact with the wall surface of the structure. Therefore, if the float is made cylindrical and the axis in the longitudinal direction of the cylinder is arranged at right angles to the vertical movement due to the tide, the float rotates due to the vertical movement of the tide and rubs against the wall surface of the structure. Sweeping action increases.

However, when the cylindrical float is deformed (permanently deformed) to the original shape so that it cannot be restored to its original shape due to contact with tidal currents, waves or drifting objects, the rotation of the float is blocked, so that the polishing effect is obtained. Halve.

Therefore, as a result of preliminary examination, the cylindrical float has a cylindrical diameter of 100 to 150 mmφ and a cylindrical length of 25.
0 to 300 mm, a hole of 15 to 30 mmφ is provided in the center of the cylinder in the lengthwise direction, and if a required number of cylindrical floats are connected to this through a vinylon rope, the float will easily rotate and the wall surface of the target structure It was found to come into contact. FIG. 10 shows an example of a float with a cylindrical brush (cylindrical polishing / cleaning float 1b) manufactured based on the above-described examination results.

FIG. 10 shows a fiber reinforced epoxy resin (FR
75 mmφ made of Styrofoam whose surface is reinforced with E)
A soft brush type float in which 0.4 mmφ polyethylene fibers were implanted on a 300 mmL cylindrical surface was shown. The float main body 2 has a size of 75 mmφ × 300 mmL, and the float with a brush has a size of 140 mmφ × 300 mmL. FIG. 10 shows some of these connected in the length direction.

FIG. 11 shows the minimum tide level of the revetment parapet +1
It shows the condition of the apparatus in which two sets of 10 cylindrical floats 1b for polishing and cleaning 140 mmφ × 300 mmL are arranged in a row and two sets are attached, with a range of 1 m from 000 mm to +2000 mm as the polishing target.

The 10 pieces × 2 sets of floats are made of the vinylon rope 1 of 12 mmφ in the rope passage slot 9b in the length direction.
Each float 1b is connected through 0b. Both ends of the rope 10b are fitted to the guide wire 10 via sliding fittings 12, and the guide wire 10 is fixed and supported by support fittings 51 and 53 attached to the upper and lower structures of the target structure. The guide wire 10 serves to adjust the clearance between the brush and the wall surface of the structure.

In order to facilitate the rotation, the cylindrical scouring float 1b is provided with a slot 9b in its lengthwise direction to pass through the vinylon rope 10b. As a result, the cylindrical float 1b can further enhance the effect of suppressing the growth of marine organisms near the sea surface of the revetment parapet by vertical movement due to the ebb and flow of the tide, polishing and cleaning due to rotation, and horizontal rocking impact due to waves.

The device was attached to a part of the cleaned revetment parapet. In terms of time, we encountered the time when marine organisms started to be most active, but after 4 months or more, the quality of the part where this device was installed and the part where this device was not installed was clearly visible. That is, almost no marine organisms were observed to be settled on the installation part of this device, which was indistinguishable from the wall surface immediately after cleaning. On the other hand, innumerable juvenile barnacles were attached to the wall surface of the uninstalled part.

[0051]

[Effects of the Invention] Regardless of the need for measures to prevent the adhesion of marine organisms, to structures with a large surface area in the open environment sea area where the prevention technology that can cope with the point of workability and economical efficiency was poor,
By using the apparatus and method of the present invention equipped with a scouring brush, it was possible to prevent bio-growth on the wall surface in the vicinity of the tidal zone by a physical natural means that does not rely on human work.

In particular, by maintaining the clearance between the float and the target wall surface within a desired range, the guide wire is tensioned up and down along the wall surface of the target structure, and the polishing float is supported by this wire. I was able to. Moreover, due to the spring property of this wire, the float can swing horizontally and impact on the wall surface, making it possible to eliminate spores and larvae from the roots, and prevent marine organisms from growing up and down by sliding up and down. The effect could be further enhanced. Furthermore, it was easy to remove the drifted matter sandwiched between the wall surface. Also, by using the guide frame,
It was possible to maintain the clearance between the float and the target wall surface.

According to the present invention, by applying the arc type scouring float to the non-self-supporting steel pipe pile,
It was possible to prevent the growth of marine organisms. When a cylindrical cleaning float is used, the size of the float can be reduced because brushes can be planted on the entire surface of the float. Since the cylindrical float is rotated when it slides up and down due to the tide level or waves, it can further suppress the settlement of living organisms, and because it can rotate, it also eliminates the drifting objects caught between the wall surface. It became easier. Furthermore, the device of the present invention is easy to install and replace, and in addition, is a marine organisms epidemic prevention device having no environmental pollution,
Industrially effective.

[Brief description of drawings]

FIG. 1 is a structural diagram of a basic rectangular parallelepiped cleaning float.

FIG. 2 is a front view in which a float device for polishing and cleaning is attached to an intake revetment concrete parapet.

FIG. 3 is a sectional view of FIG.

FIG. 4 is a layout view of a float device for polishing and cleaning mounted on a seawall parapet by a guide frame method.

FIG. 5 is a float apparatus for multistage polishing using a guide frame method.

FIG. 6 is a layout view of a float device for multistage polishing which is attached to the concrete surface of the intake wall curtain wall portion by a guide frame method.

FIG. 7 is a structural diagram of an arc type cleaning and cleaning float.

FIG. 8 is a plan view in which an arc-type polishing and cleaning float is attached to a steel pipe pile (application of the present invention to other structures).

9 is a front view of FIG.

FIG. 10 is a structural diagram of a basic cylindrical polishing float.

FIG. 11 is a layout diagram in which a cylindrical float device for polishing is attached to the revetment parapet.

[Explanation of symbols]

1: Cuboidal polishing and cleaning float, 1a: Arc-shaped polishing and cleaning float, 1b: Cylindrical polishing and cleaning float, 2: Float body, 3: Brush substrate, 4: Brush, 5: Spacer,
6: Brush board, 7: Bolts / nuts, 8: Protector, 9: Guide pipe, 9a: Guide pipe, 9b: Rope through groove hole, 10: Guide wire, 10a: Guide wire, 10b: Vinylon rope, 11: Guide Frame, 12: Sliding metal fitting, 13: Rope insertion opening, 51: Upper supporting metal fitting, 51a: Upper fixing metal fitting, 52: Stopper, 53: Lower supporting metal fitting, 53a: Lower fixing metal fitting, 5
4: Turnbuckle, 101: Water intake revetment concrete parapet, 102: Land upper structure, 103: Water intake revetment steel sheet pile, 104: Water intake, 105: Steel pipe pile, 105a:
Steel pipe pile (front part), 106: support structure, 107: fender attachment part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigenori Naito 1 Goi Kaigan, Ichihara City, Chiba Prefecture Tokyo Electric Power Co., Inc. Goi Thermal Power Plant (72) Inventor Noboru Usawa 1 Goi Kaigan, Ichihara City, Chiba Tokyo Electric Power Company Goi Thermal power plant (72) Inventor Takuya Domoto 1 Goi coast, Ichihara city, Chiba prefecture Tokyo Electric Power Co., Ltd.Goi thermal power plant (72) Inventor Masataka Minami 1 Goi coast, Ichihara city, Chiba Tokyo electric power company Goi thermal power plant (72) Inventor Fumiaki Akiyama 1 Goi Kaigan, Ichihara City, Chiba Prefecture Goi Thermal Power Station, Tokyo Electric Power Co., Inc.

Claims (6)

[Claims] 1. An apparatus for preventing the growth of marine organisms that adheres to the wall surface near the sea surface of an undersea structure constructed in an open or near-environmental sea area, which comprises a weight or an internal seal. On the surface of the rectangular parallelepiped float body, which is made of foam material whose surface is reinforced with epoxy resin or FRP, adjusted to a specific gravity similar to that of seawater, facing the wall surface of the structure, and a fiber brush and a hard material for preventing the deformation of the brush. A rectangular parallelepiped polishing and cleaning float having a spacer made of an elastic body and further having a plurality of guide pipes attached to the float body,
An apparatus for preventing marine organisms from adhering to an undersea structure, which is fitted to a guide wire having a spring property through the guide pipe. 2. One or more of the polishing floats is incorporated into a rigid guide frame.
An apparatus for preventing marine organisms from encroaching on an undersea structure as described in. 3. A marine organism that prevents the aquatic organisms from adhering to the wall surface near the sea surface of a non-self-supporting steel pipe pile reinforced with another structural material constructed in an open or near-environmental sea area. An anti-adhesion device, which is made of a foam material whose surface weight is adjusted to a specific gravity similar to that of seawater by using a weight or internal sealing water, and whose surface is reinforced with epoxy resin or FRP.
The arc-shaped float body having a concentric inner arc with the steel pipe pile has a spacer made of a fiber brush and a hard elastic body for preventing the brush deformation on the arc inner surface facing the wall surface of the steel pipe pile, and the float body. An apparatus for preventing marine organisms from adhering to an undersea structure, comprising: an arc-shaped polishing and cleaning float having a plurality of guide pipes attached to a bottom thereof and fitted with a guide wire having a spring property through the guide pipes. 4. An apparatus for preventing marine organisms from adhering to the wall surface near the sea surface of an undersea structure constructed in an open or near-environmental sea area, which comprises a weight or an internal seal. Adjusted to a specific gravity similar to seawater with water and made of foam material with the surface reinforced with epoxy resin or FRP,
A plurality of cylindrical polishing and cleaning floats formed by implanting fiber brushes on all cylindrical side surfaces of a cylindrical float body having a hole passing through the center, and a rope or wire having sliding fittings at both ends is passed through the hole. An apparatus for preventing marine organisms from adhering to undersea structures, which is formed by connecting sliding metal fittings at both ends to two guide wires having spring properties. 5. When the specific gravity is adjusted using the weight and the buoyancy of the float is adjusted, a flat plate is used as a weight on the float, above or below or on the side surface to reduce impact damage to a drifting object on the sea surface. The marine organisms-preventing device for a seawater structure according to any one of claims 1 to 4, wherein the effect of a protector is added. 6. The marine organism settlement apparatus according to claim 1, wherein the settlement apparatus is floated on the surface of the sea, and the settlement apparatus slides on the wall surface of the target structure due to ebb and flow of the tide. A method for preventing the formation of marine organisms in undersea structures, which comprises moving and impacting.