JP2003342928A - Mounting construction method for panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the adhesion of marine organisms onto the wall surface of a submarine structure. <P>SOLUTION: When anti-clogging panels 2 against marine organisms are installed onto the wall surface 1a of the submarine structure 1, a large number of the panels coated with anti-clogging materials against marine-organism are connected previously, the panel connecting bodies 3 are hung down successively on the front side of the wall surface from the upper section of the submarine structure and each panel is introduced at the places of mounting respectively and each panel is fixed onto the wall surface by anchors. The panel connecting bodies are hung down successively into the sea, and the anchors for fixing the panels sunk in the sea are driven by an underwater tool 9. The panel connecting bodies can be folded previously by connecting each panel by flexible connectors 7, and each panel can be detached previously by cutting the connectors. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method for attaching a panel for preventing marine organisms from adhering to the wall surface of an undersea structure.

[0002]

2. Description of the Related Art A large amount of marine organisms such as barnacles and mussels adhere to the surface of various undersea structures, for example, seawater intake facilities in power plants, which may cause functional deterioration or malfunction. There is. In the past, adherent marine organisms could only be scraped off periodically to remove them, but recently, various repellent substances disliked by marine organisms have been developed, and it is necessary to apply them on the surface of undersea structures in advance. It is becoming increasingly common to prevent and control the attachment of marine organisms.

[0003]

However, since all the repellent substances of marine organisms which have been put into practical use in the past are directly applied to the surface of the undersea structure as an antifouling paint, the application work Cannot be performed in the sea (in water), so that it is necessary to dry the entire coating surface during the coating operation, and if that is not possible, it cannot be applied.

Further, even if it is possible to carry out the coating operation by making it dry, a large-scale scaffold is usually required, and the antifouling paint is sufficiently thick in order to maintain the effect of the repellent substance for a long period of time. In addition, since it is necessary to re-apply it, the construction period will be long, and in any case it will be necessary to reapply the antifouling paint in about one to several years, so it is necessary to dry it every time. However, in that case, it is necessary to perform a troublesome preparatory work of scraping off the marine organisms already attached.

From the above, the conventional coating method in which the anti-adhesion material for marine organisms is directly applied to the surface of the undersea structure as an antifouling paint can be easily implemented in terms of labor cost and workability. Not a thing, but an effective improvement measure was desired.

[0006]

In view of the above circumstances, the invention of claim 1 is such that a panel for preventing adhesion of marine organisms is attached to the wall surface of an undersea structure,
In particular, a large number of panels coated with a marine organism adhesion-preventing material are connected in advance, and the panel connection body is hung from above the undersea structure to the front side of the wall surface to guide each panel to its mounting position. After that, each panel is fixed to the wall surface of the undersea structure with an anchor.

The invention of claim 2 is characterized in that the panel connecting body is suspended in the sea, and an anchor for fixing the panel immersed in the sea is driven by an underwater tool.

The invention according to claim 3 is characterized in that the panel connecting body is made foldable by connecting each panel with a flexible connecting tool, and each panel can be separated by cutting the connecting tool. To do.

[0009]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to FIGS. The construction method of the present embodiment is intended to attach a panel 2 for preventing adhesion of marine organisms to the wall surface 1a of various undersea structures 1, and in particular,
A large number of panels 2 are previously connected as a panel connecting body 3 in a long direction in one direction, and the panel connecting body 3 is suspended from above the underwater structure 1 into the sea. Is fixed to the wall surface 1a.

The panel 2 according to the present embodiment has a panel main body 2a made of a resin molded plate such as FRP coated with an antifouling paint 2b as a marine organism adhesion preventing material in advance. The components of the antifouling paint 2b are not particularly limited, but those that generate cuprous oxide and negative ions can be suitably used. The thickness of the coating film of the antifouling paint 2b may be appropriate, but the useful life (effective period) of a normal antifouling paint is 0.06 mm.
In the case of a thickness of (60 μm), which is about one year, the panel 2 of the present embodiment has a thickness of 0.6 to 1 mm (6
It is preferable to provide a thick coating of about 100 to 1000 μm) to make the service life sufficiently long. Of course, the size and thickness of the panel 2 may be appropriate, and the material of the panel body 2a may be appropriate, but the FRP is actually adopted because it is excellent in corrosiveness against seawater, lightweight, easy to handle, and inexpensive to manufacture. Target and optimal. As shown in FIGS. 2 to 3, anchor mounting holes 5 are formed in the four corners of the panel 2, and the anchor mounting holes 5 are provided with counterbores with which the heads of the anchors 6 engage. .

In the construction method of this embodiment, as shown in FIG. 2, the above-mentioned panel 2 is previously connected in a long direction in one direction via a connecting tool 7 to form a panel connecting body 3. A flexible tape-shaped connector is adopted as the connector 7, and the panel connector 3 can be folded by attaching it to the back side of the panel 2 so that it can be easily handled during transportation or construction. ing. The connector 7 may be attached to the front side of the panel 2, and the connector 7 may be made of any other material or form, such as a wire (cord wire), as long as the panels 2 can be connected in a foldable state. ) And metal fittings can also be used.
However, in any case, if necessary, the panel connecting body 3
So that it can be cut at a desired position, or only the desired panel 2 can be separated from the panel connecting body 3,
It is preferable that the connecting tool 7 be one that can be easily cut or broken by a simple tool such as a cutter, or that the connection can be easily released.

The construction method of this embodiment is as shown in FIG.
The panel connection body 3, which has been folded in advance, is sequentially extended from above the undersea structure 1 and is suspended in the sea so as to be arranged on the front surface side of the wall surface 1a. At that time, by attaching the weight 8 to the lower end portion of the panel connecting body 3, it is possible to prevent the panel connecting body 3 from being lifted up and suspend it without any trouble.

When the panel connecting body 3 is suspended to a predetermined position, as shown in FIG.
Each panel 2 is fixed to the wall surface 1a by driving the anchor 6 into the wall 1. The work is performed by the diver 4 using an underwater tool 9 such as an underwater gun. If necessary, a prepared hole for driving the anchor 6 may be formed in the wall surface 1a in advance. Also,
At least the mounting hole 5 on the front surface or the back surface of the panel 2 is provided in order to absorb the impact on the panel 2 when driving the anchor 6 or to improve the conformity with the wall surface 1a.
It is desirable to attach a porous cushioning material such as Styrofoam or an elastic cushioning material such as rubber to the periphery of the.

According to this construction method, by attaching the panel 2 coated with the antifouling paint 2b to the wall surface 1a in the sea, it is possible to effectively prevent and suppress the adhesion of marine organisms to the wall surface 1a. Of course, unlike the conventional case where the antifouling paint is directly applied to the wall surface, it is not necessary to dry the front surface of the wall surface, and there is no need to provide a scaffold in the sea, and the panel 2 is attached. It can be performed easily and in a short period of time, and is most suitable when applied to an undersea structure whose coated surface cannot be dried even when the antifouling paint is applied.

Further, when the service life of the antifouling paint 2b on the panel 2 attached by this method has passed, the anchor 6 can be pulled out by underwater work by a diver to pull up the entire panel connecting body 3 as it is. Therefore, it is possible to easily perform the replacement work with the new panel connecting body 3. It should be noted that even if marine organisms adhere to the panel 2 to be exchanged when performing such an exchange work, it is naturally removed by pulling up the panel connecting body 3, so it is not necessary to remove it in advance. Absent. When applying an antifouling paint directly on the surface of the undersea structure as in the past and periodically repainting,
Not only it is necessary to dry before repainting, but preparatory work for removing the marine organisms that have already adhered is necessary, whereas if the panel connection body 3 is replaced by this method, Not only does it need to be dried, it also does not require the work of removing marine organisms, and in this respect, it is far more rational than the conventional coating method.

When it is necessary to replace the individual panels 2 instead of replacing the entire panel connecting body 3, the connecting tool 7 is cut to move the panel 2 to be replaced up and down. Separate it from the panel, pull up only it, and attach a new panel 2 there. The removed panel connector 3 or panel 2 may be appropriately disposed of together with the attached marine organisms. The marine organisms are scraped off from the panel 2, and the antifouling paint 2b is reapplied to the surface of the panel to remove the marine organisms. It is also possible to regenerate 2 and reuse it as the panel connecting body 3.

Further, the panel connecting body 3 adopted in the present construction method is not only fixed to the wall surface 1a by the underwater work by the diver 4 as described above, but also attached to the wall surface by the work in the air. It can also be applied in cases. In that case, instead of underwater work by a diver, use a scaffold such as a gondola, and instead of anchoring with an underwater tool such as an underwater gun, use ordinary post-strike anchors or anchor bolts to attach the panel to the wall surface. And fix it.

[0018]

According to the first aspect of the present invention, a large number of panels coated with a marine organism adhesion-preventing material are connected in advance, and the panel connection body is suspended from above the undersea structure to the front side of the wall surface. After each panel is guided to the mounting position, each panel is fixed to the wall surface of the undersea structure with an anchor, so that it is possible to effectively prevent and suppress the adhesion of marine organisms to the wall surface of the undersea structure, as well as the wall surface. It is possible to efficiently perform the work of attaching a large number of panels to the panel and the work of exchanging the entire panel assembly.

According to the second aspect of the present invention, since the panel connecting body is suspended in the sea and the anchor for fixing the panel immersed in the sea is driven by the underwater tool, the work in the sea is possible and the panel mounting is possible. It can be applied without trouble even if the surface cannot be dried.

According to the third aspect of the present invention, since the panel connecting body is made foldable by connecting the respective panels with the flexible connecting tool, and the respective panels can be separated by cutting the connecting tool, it is possible to transport the panels during transportation. It is easy to handle the panel assembly at the time of construction, and it is also possible to replace only individual panels.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an embodiment of a construction method of the present invention.

FIG. 2 is a schematic configuration diagram of the panel connector.

FIG. 3 is a detailed view of the panel in a fixed state.

[Explanation of symbols]

1 Underwater structure 1a wall surface 2 panels 2a panel body 2b Antifouling paint (sea organisms adhesion prevention material) 3 panel connection 4 Divers 5 anchor mounting holes 6 anchor 7 connector 8 weights 9 underwater tools

Claims (3)

[Claims] 1. A method for attaching a panel for preventing adhesion of marine organisms to a wall surface of an undersea structure, the method comprising:
After connecting a large number of panels coated with a marine organism adhesion-preventing material in advance and suspending the panel connection from above the undersea structure to the front side of the wall surface and guiding each panel to its mounting position. , Panel mounting method characterized by fixing each panel to the wall surface of the undersea structure with an anchor. 2. A panel connection body is suspended in the sea,
The panel mounting method according to claim 1, wherein an anchor for fixing the panel immersed in the sea is driven by an underwater tool. 3. A panel connecting body is made foldable by connecting each panel with a flexible connecting tool, and each panel is made separable by cutting the connecting tool. The panel installation method described in 2.