JPH089219Y2 - Marine pollution prevention membrane structure - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a marine pollution prevention membrane structure, and its purpose is to prevent water pollution within a certain range in order to prevent marine pollution due to coastal civil engineering works, landfills, oil leaks, etc. A preventive film that prevents the diffusion of enclosed sludge and oil, which can be easily and quickly replaced, especially when shellfish and oil are adsorbed on the preventive film once placed in the sea. It is to provide a marine pollution prevention membrane structure capable of minimizing damage due to water pressure even if it is disposed in the sea.

(Prior art) To prevent sludge generated during coastal civil engineering work and oil leaked from the ocean from the ocean from diffusing, marine pollution prevention membranes that surround a certain area within the ocean already have various structures. Have been used for.

An example of this marine pollution prevention film will be described with reference to FIG. 9. A coated cloth (a), a reinforcing belt (b) for reinforcing the coated cloth (a) in preparation for water pressure, and an upper edge of the coated cloth (a). The floating material (c) provided on the base and the ballast (d) provided on the lower edge of the coated cloth (a) are the main constituent elements, and the ballast (d) is attached to the seabed via an anchor to pollute the ocean. The prevention film is installed vertically from the sea floor.

Oil and the like that leak into the ocean are blocked by the coating fabric (a) of this marine pollution control film, and do not diffuse further into the open ocean.

Further, in Japanese Examined Patent Publication No. 56-2844, both front and back sides of a fence main body formed of a fiber layered body of a predetermined fiber amount in which a crossover portion of fibers irregularly cross-spread with a plant fiber is bonded with a water-insoluble adhesive. Attach a suitable mesh net such as gold cloth to the fence and cover the fence main body on the floating body such as expanded polyethylene or expanded polystyrene fixed to the rope, and in the aquaculture fishing ground where the required hanging part exists below. A fence for preventing harmful substance outflow is disclosed.

Also, Japanese Utility Model Publication No. 58-51231 discloses an oil fence adapter in which an oil fence floating on the sea is temporarily fixed and then connected by a fastener.

Further, in Japanese Utility Model Laid-Open No. 2-29929, a cover made of plastic, vinyl chloride tarpaulin, or the like is sewn on the outer peripheral surface of the float portion while covering the longitudinal edges of the cover, and then made of the same material as the cover. A long side upper edge portion of the formed skirt portion is continuously provided to a long side lower edge portion of the cover, and a plurality of skirt portions are continuously provided at the long side lower edge portion of the skirt portion to form a fence main body, A film-like film body formed of polyethylene, polyester, etc. on the outer peripheral surface of this fence body can be masked during or after the fence is manufactured, and layered film bodies can be peeled off one by one on the surface of the cover and skirt. There is disclosed an oil fence formed in close contact with.

(Problems to be Solved by the Invention) However, the above-mentioned conventional structure of the marine pollution control film has the following problems. That is, in the marine pollution control film (particularly the upper part of the marine pollution control film) shown in FIG. 9, a large amount of shellfish (s) (crows, etc.) that live in the ocean tend to adhere, and thus shellfish ( When a large amount of s) adheres,
The gravity of shellfish (s) may be applied to the marine pollution control film, and the upper part of the marine pollution control film may sink below the sea level, and oil and polluted water may diffuse from this part to the open sea. It was

In such a case, conventionally, it has been necessary to perform a very complicated work such as lifting up the entire marine pollution prevention film and installing a separately prepared marine pollution prevention film in the ocean.

On the other hand, in the fence for preventing harmful substance outflow in aquaculture fishing grounds disclosed in Japanese Patent Publication No. 56-2844, when the fence itself also adsorbs oil or the like dumped in the sea, the fabric arranged on the surface. Since the fibrous layered body must be replaced at the same time together with a suitable mesh of mesh, there has been a problem that the replacement work becomes very large.

In addition, the oil fence adapter disclosed in Japanese Utility Model Publication No. 58-51231 is capable of continuously connecting the oil fence when the oil fence is arranged in the sea, but it is already arranged in the sea. However, there is a problem that the work of replacing the oil fence that has adsorbed oil or the like cannot be easily performed.

On the other hand, in the oil fence disclosed in Japanese Utility Model Laid-Open No. 2-29929, the layered film bodies formed on the outer peripheral surface of the fence main body are peeled off from the outer surface side, thereby collectively peeling the attached marine organisms such as shellfish and algae. It is supposed to be possible.

However, in this oil fence, since the fence main body covering the film body is composed of a continuous body of skirt portions formed of a material such as plastic, that is, it is composed of one flat plate-shaped plate. However, there has been a problem that the resistance to water pressure increases and the oil fence itself is easily damaged by water pressure.

Moreover, in this oil fence, there is also a problem that the operation of replacing the peeled film body with a new one cannot be easily performed.

In other words, this technology is only intended to simply peel off the film body that is in close contact with the surface, so if this film body is completely peeled off, place a new oil fence separately in the sea. I have to set it up.

Since this work has to be performed by replacing all the members constituting the oil fence, there has been a problem that it has to be performed in a large scale by using a crane or the like.

Furthermore, this technique does not allow the membrane body to be easily attached to the fence body in the sea.

Therefore, even if the preventive film arranged in the sea has sufficiently absorbed harmful substances such as oil, the invention takes out the entire preventive film from the sea and hangs a new preventive film again with a crane or the like. There is no need to lower it and place it in the sea, and only the membrane part that has adsorbed oil, etc. can be replaced easily and quickly in the sea.In addition, resistance to water pressure is small, and it can be distributed in the sea for a long time. The purpose of the present invention is to provide a marine pollution prevention membrane structure that is unlikely to be damaged by water pressure even if installed.

(Means for Solving the Problem) The present invention is a structure of a preventive film that prevents diffusion of filth generated when working in the ocean out of a predetermined range. A core body made of the formed mesh member, a floating body attached to the upper edge of the core body, and a coated cloth made of a woven fabric or a non-woven fabric which is detachably polymer-coated on at least one surface of the core body. The conventional problem is solved by providing a marine pollution control film structure characterized in that the bottom edge of the protection film is attached to the seabed.

(Operation) In the invention of claim 1, since the protective film is configured such that the coated cloth is removably polymerized and coated on at least one of the front and back surfaces of the core body made of a mesh member formed in a lattice shape. If shellfish adheres to the shell, or if oil or the like is adsorbed, it is not necessary to take the entire prevention film out of the sea with a crane and replace it with a new one. It suffices to peel off only the core from the core in the sea, and polymerize and coat a separately-fabricated coated cloth on the core in the sea.

Therefore, it is possible to easily and promptly deal with the case where the shellfish adheres or the case where the oil dumped in the sea is adsorbed.

Since a grid-like net member is used as the core, the area under water pressure is small, and the resistance due to water pressure is small, so even if it is placed in the sea for a long time, damage due to water pressure will be minimized. It can be lost.

In addition, since the net member formed in a lattice shape is used as the core material, when covering the front and back surfaces of the core material in the sea, for example, the surface of the core material can be easily passed through a string to form the core material. Can be locked.

According to the second aspect of the present invention, since the coated cloth is polymerized by the surface-bonding fastener or the like, the coated cloth can be easily attached and detached.

(Embodiment) An embodiment of the marine pollution prevention membrane structure according to the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a state where the marine pollution prevention film is installed near the coast, and the diffusion range of oil and sludge (o) is limited to a certain range by the marine pollution prevention film.

The marine pollution prevention film mainly includes the prevention film (1) and the floating material (9).

This prevention film (1) comprises a coated cloth (2) (2) and a core body (3) sandwiched between the coated cloths (2) and (2) being polymerized.

The coated fabric (2) is made of a woven or non-woven fabric made of natural fibers or synthetic fibers. In this embodiment, high strength polyester synthetic fiber is used in consideration of durability, cold resistance, chemical resistance, light resistance and the like. It is used as a material.

Considering the durability against water pressure as the core body (3),
It is preferable to use a net, and the material and structure of this net are usually
It may be the same as the net or net used.

For example, woven nets, Russell nets, knotted nets, knotless nets, and the like can be mentioned.

Also, the material is synthetic fiber, natural fiber, synthetic resin, metal,
Others include.

Reinforcing belts (4) are provided longitudinally and laterally on one or both of the front and back surfaces of the coated cloth (2) (2) and the core body (3), and the coated cloth (2) (2) and the core body ( The strength against water pressure of 3) is reinforced.

An appropriate number of holes (4a) ... Are perforated in the portion of the reinforcing belt (4) that corresponds to the edge of the coated cloth (2) (2).

The coated cloths (2) and (2) are polymerized on both front and back surfaces of the core body (3) to allow the holes (4) and (4) to pass through each other with the core body (3) sandwiched therebetween, and to the holes (4a). The coated cloth (2) is obtained by passing the string material (5) and tying the ends of the string material (5) together.
(2) and the core (3) are polymerized and integrated.

A series of ballasts (6) are bonded to the lower edge of the core body (3) of the prevention film (1) thus formed.
A rope (7) is connected to the rope, and the rope (7) is connected to an anchor (8) installed on the seabed.

The floating material (9) is attached to the upper edge of the prevention film (1).

The floating material (9) is provided with a buoyancy element (9a) in the longitudinal direction of the prevention film (1) as shown in the second illustration, and these are made of the same material as the coating material (2). ).

Examples of the buoyancy element (9a) include air, a plurality of buoys, and Styrofoam.

Attach the prevention film (1) and the floating material (9) to the prevention film (1)
The upper edge of the core body (3) is fixed to the lower edge of the floating material cover (10) with metal fittings.

The method of polymerizing the coated cloth (2) (2) and the core body (3) constituting the prevention film (1) is not limited only to the above-mentioned cord material, and is not limited to that shown in FIG. As shown in B), a surface-bonding fastener is provided on the appropriate places of the coated cloth (2) (2), for example, the back surface of the portion where the reinforcing belt (4) is provided and both surfaces of the reinforcing belt (4) of the core body (3). (11) are provided so that male and female are paired, and these surface-bonding fasteners (1
It is also possible to adopt a method in which the coated cloth (2) is polymerized and coated on the core body (3) by 1).

Further, as shown in FIG. 6, for example, a coated cloth (2)
(2) A suitable number of male buttons (12a) are provided on the back surface corresponding to the reinforcing belt (4), and the male buttons (12a) are provided on the front and back surfaces of the reinforcing belt (4) of the core body (3). Female buttons (12b) corresponding to the
It is also conceivable to engage 2a) and (12b) to polymerize and coat the coated cloths (2) and (2) on the core body (3).

In the structure of the prevention film (1) described above, the string material (5)
Although the connecting points such as are on the reinforcing belt (4), it is not necessary to limit the connection to the reinforcing belt (4). The foot of the net which is (3) may be combined.

As a mode of the prevention film (1), FIG. 1 to FIG. 5 (A)
It is not limited to the structure in which the coated cloth (2) is polymerized on the entire front and back surfaces of the core body (3) as shown in FIG. 7, but the coated cloth (2) is polymerized to the middle of the entire height of the core body (3) as shown in FIG. The structure can be adopted.

Since the above-mentioned shellfish attach in large amounts mainly on the upper part of the prevention film (1), the core body (3) constituting the prevention film (1).
It also plays a role only by polymerizing the coated cloth (2) only on the upper part of.

In order to install the marine pollution prevention film having such a structure in a necessary place in the ocean, the marine pollution prevention film assembled in advance as described above is lifted by a crane or the like and gradually supplied into the sea. The end of the marine pollution prevention film is attached to a ship, etc., and is pulled into a predetermined range by this ship etc., and finally the lower edge of the prevention film is manually attached to the anchor (8) on the seabed by the rope (7). .

The mode of installation of this marine pollution prevention film in the ocean is not limited to that shown in the first illustration, and it can be arbitrarily installed depending on the situation in which marine pollution occurs. For example, as shown in FIG. Install (1) only in the depth where sludge is generated by civil engineering work in the sea, and prevent diffusion of sludge in the area (A) surrounded by the prevention membrane (1) (the part shown by the chain-slashes) to the open sea. You can also choose to do so.

Further, as shown in FIG. 8 (B), the first prevention film (1) is hung vertically from the sea surface to a predetermined depth, and the second prevention film (1) is further provided.
Is raised to a predetermined depth from the sea bottom, and the lower edge of the first prevention film (1) and the upper edge of the second prevention film (1) are provided at a distance in a substantially horizontal direction, and pollution is caused by civil engineering work in the sea. You may make it enclose only the range (A) in which is generated.

By the way, when a large amount of shellfish (s) as shown in FIG. 9 adheres to the prevention film (1) of the above-mentioned marine pollution prevention film, the cord cloth (5) ... Body (3)
, The person dives into the sea and cuts or removes these cords (5) ..., and finally the coated cloths (2) and (2) are removed from the core body (3), Pull it up on land or on a ship with a winch.

After that, the separately prepared coated cloth (2) (2) is dropped into the sea, and this is bonded to the core body (3) by the cord material (5) ... )
(2) can be reused by removing the attached shellfish (s).

Only the coated cloths (2) and (2) are attached and detached, and the floating material (9), the core body (3) and the like are installed in the original state, and therefore workability is good.

In addition to the above, the entire marine pollution prevention film can be pulled up to the ground, and only the coated cloths (2) and (2) can be replaced on the land to install the marine pollution protection film again in the ocean.

Furthermore, the oil (heavy oil) flowing out from the ship is adsorbed to the marine pollution prevention film coated cloth (2) (2), and this coated cloth (2)
If only (2) is removed and incinerated, the oil on the ocean can be removed by the coated cloths (2) and (2).

(Effects of the Invention) As described in detail above, the invention according to claim 1 has a structure of a prevention film for preventing the diffusion of the waste generated when working in the ocean from a predetermined range to the outside. The prevention film includes a core body made of a mesh member formed in a grid pattern, a floating body attached to the upper edge of the core body, and a woven cloth which is detachably polymer-coated on at least one surface of the core body. Since the marine pollution control film structure is characterized in that it has a coated cloth made of a non-woven fabric, and the lower edge of this prevention film is attached to the seabed, it has the following excellent effects.

That is, since the coated cloth that constitutes the prevention film is detachably polymerized on the front and back surfaces of the core body made of a grid-like net member, shellfish or oil is adsorbed to the prevention film installed in the sea. In this case, it is not necessary to take out the entire prevention film from the sea with a crane and replace it with a new one.Only the coated cloth polymerized on the surface of the core is peeled off from the core in the sea, and a separate coating is provided. All that is required is to polymerize the cloth onto the core in the sea.

Therefore, it is possible to easily and promptly deal with the case where the shellfish adheres or the case where the oil dumped in the sea is adsorbed, and it is possible to obtain an excellent effect that the workability is extremely low and the workability is extremely good.

In addition, it has an excellent effect that the adsorption treatment of oil dispersed in the sea, which is very difficult, can be performed only by replacing the coated cloth.

Moreover, since the grid-like net member is used as the core, the area that receives water pressure in the sea is small, the resistance due to water pressure is small, and even if it is placed in the sea for a long time, it will be damaged by water pressure. Can be eliminated as much as possible.

Moreover, for example, when the coated cloth is coated on the front and back surfaces of the core material in the sea, since the core material is the net member, the coated cloth can be easily attached through the string from the surface of the coated cloth.

Since the invention of claim 2 is a marine pollution prevention film structure in which a surface-bonding fastener is provided on the side edge of the coated cloth,
In order to attach and detach the two coated cloths, a person only has to polymerize the coated cloths with each other and peel them off, and it is possible to easily and quickly attach and detach the coated cloths, and it is possible to further improve the working efficiency. .

[Brief description of drawings]

Fig. 1 is a perspective view showing a state where the marine pollution prevention membrane according to the present invention is installed near the coast, Fig. 2 is a partial cross-sectional side view of the same marine pollution prevention membrane, and Fig. 3 is the same as above. Fig. 4 is a vertical cross-sectional view of the end of the membrane, Fig. 4 is a partial perspective view of the end of the marine pollution control membrane, and Fig. 5 (A) is a partial perspective view showing another example of the superposition of the coated cloth and the core body. FIG. 5 (B) is a partial sectional view of the same as above, FIG. 6 is a partial sectional view showing still another example of the superposition of the coated cloth and the core, and FIG. 7 is another example of the structure of the prevention film. 8A and 8B are schematic side views showing another example of the case where the marine pollution control film is installed in the sea, and FIG.
The figure is a partial cross-sectional view of a conventional marine pollution control film. (1) …… Prevention film, (2) …… Coated cloth, (s) …… Shellfish (3) …… Core body, (9) …… Floating material

Claims (2)

[Scope of utility model registration request] 1. A structure of a preventive film for preventing filth generated during working in the ocean from diffusing outward from a predetermined range, the preventive film being a core made of a mesh member formed in a grid pattern. A body and a floating body attached to the upper edge of this core,
At least one surface of the core body front and back comprising a coated cloth made of a woven or non-woven fabric that is detachably polymerized and coated,
Further, a marine pollution prevention film structure characterized in that the lower edge of this prevention film is attached to the seabed. 2. The marine pollution control film structure according to claim 1, wherein a surface-bonding fastener is provided on a side edge of the coated cloth.