JP6659904B1 - Water fence and method of building water fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means capable of constructing a water fence at low cost in a relatively narrow conservation area. SOLUTION: A protective wall 10 in which a plurality of buoyant bodies 11 having a longitudinal direction in the vertical direction are arranged side by side, and a plurality of buoyant bodies 11 are connected in a circumferential direction of the protective wall 10 while being connected in a freely expandable and assembling manner. The water fence A includes at least a restraining member 20 capable of introducing a tension force and a positioning member 30 forming a holding space C for holding the maintenance target B inside the protective wall 20. By assembling the plurality of buoyancy bodies 11 on the water, even if the maintenance target is an object such as the anchor Y that is vertically continuous across the water surface, the water fence A can be retrofitted. Further, by introducing a tension force in the circumferential direction of the protective wall 10 with the restraint member 20, it is possible to construct a strong protective wall 10. [Selection diagram] Fig. 1

Description

  The present invention relates to a water fence that is installed so as to surround a water conservation object in plan view.

  Oil fences and the following patents are devices that protect structures, objects, oil spills, etc. on the water by installing walls underwater so as to surround the objects to be protected in a plane. A fence according to Document 1 and the like are known.

JP 2007-223577 A

The fence described in Patent Literature 1 has at least one of the following problems.
(1) It is assumed to be installed over a relatively wide area, such as harbor closures, submarine protection fences, and waterline protection, and is not intended for applications where the conservation area is a relatively narrow enclosed space.
(2) Since the floating body, the pillar, and the wall (net or membrane) are formed of different members, there is a limit in reducing the construction cost and improving the efficiency of the construction work.
(3) Unless an anchor or the like to be installed on the bottom of the water is provided, the fence may drift on the water and cause a positional shift or deformation with the object to be protected.

  Therefore, an object of the present invention is to provide a means capable of constructing a water fence at a low cost in a relatively narrow conservation area.

A first invention of the present application which has been made to solve the above problems is a water fence capable of forming a conservation area by being installed so as to surround a water conservation object in a plan view, wherein a vertical direction is defined as a longitudinal direction. Forming a plurality of buoyant bodies, a protective member capable of introducing tension in the circumferential direction of the protective wall, and a holding space for retaining the object to be maintained inside the protective wall. , A positioning member, at least , the positioning member is made of at least three or more long members, each of the long members intersects each other in plan view inside the protective wall, It is attached to a protection wall or the restraining member, and a space surrounded by the long member is defined as the holding space.
Further, the second invention of the present application is a water fence capable of forming a conservation area by being installed so as to surround a water conservation object in a plan view, wherein a plurality of buoyancy bodies having a vertical direction as a longitudinal direction are arranged. A protective wall, a restraint member capable of introducing tension in the circumferential direction of the protective wall, and a positioning member forming a holding space for retaining the object to be maintained inside the protective wall. at least comprising, prior Symbol positioning material is provided an openable gate in the planar direction, and the ring member, attachable to the buoyant body or the restraint member and extends in plan view radially from the ring member, the lateral And the inside of the ring material is the holding space.
Further, the third invention of the present application is the above-mentioned first invention or the second invention , further comprising a skirt connected to a lower portion of the protective wall and deployed underwater.
Further, a fourth invention of the present application is the method for constructing a water fence according to the first invention, wherein the object to be preserved is an object that is present above and below the water surface, and is located inside the protective wall before construction. And after introducing the object to be maintained, constructing the protective wall, and inside the protective wall, the holding space formed by attaching the three or more long members so that the longitudinal directions are different from each other, It is characterized in that the objects to be preserved are kept.
According to a fifth aspect of the present invention, in the fourth aspect , the object of maintenance is an anchor of a ship anchored.
Further, according to a sixth invention of the present application, in the fourth invention or the fifth invention, a long member excluding at least one of the three or more long members is previously attached to a protective wall, It is characterized in that after the introduction of the object to be maintained inside the wall, the remaining long material is attached to form the holding space.

According to the present invention, at least one of the following effects is provided.
(1) Since the buoyant body also serves as a floating body, a column, and a wall, it contributes to reduction of construction cost and time reduction of construction work on site.
(2) The area of the maintenance area can be easily adjusted only by adjusting the number of buoyant bodies connected, and the application in a relatively narrow case is excellent.
(3) Since the buoyancy members at both ends of the plurality of buoyancy members are configured to be connectable, the buoyancy members are also excellent in application on site where the maintenance area is a closed space.
(4) Even if the object to be preserved is an object that already exists above and below the water surface (for example, an anchor anchored from a ship), a water fence can be retrofitted.
(5) By keeping the maintenance object in the holding space formed by the positioning material, the protection wall can be maintained at a predetermined position with respect to the maintenance object. As a result, there is no need to separately prepare an anchor or the like for holding the position of the protective wall.
(6) At least one of the three or more long members excluding at least one of the long members is attached to the protective wall in advance, and the remaining long members are introduced into the holding space by the maintenance object, thereby forming the water fence. The work of attaching long materials at the installation site can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the whole structure of the water fence which concerns on this invention. The schematic diagram which shows the example of a shape of a buoyancy body. The schematic diagram which shows the arrangement | positioning thanks of a restraint material. The schematic diagram which shows the other example of a positioning material. The schematic diagram which shows the procedure of the construction method of a water fence. The schematic diagram which shows the other structural examples of a positioning material. The schematic diagram which shows the structure which added the skirt.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1> Overall configuration (Fig. 1)
The water fence A according to the present invention is a structure for forming a maintenance area B by surrounding the object on the water in plan view.
In the present invention, the “maintenance object” includes everything that requires protection from surrounding objects and persons.
Further, in the present invention, the “maintenance area B” includes an area that partitions the periphery of the maintenance target within a range in which the maintenance of the maintenance target is secured.
In the present embodiment, it is assumed that the object of maintenance is the anchor Y of the ship X already anchored, and the maintenance area B is entangled with the anchor Y and may be an object such as a floating object that may obstruct the storage of the anchor Y. In addition, it is assumed that the area around the anchor Y is divided into a certain range so that an animal trying to enter the ship X via the anchor Y does not approach the anchor Y.
The water fence A according to the present invention is configured to include at least the protective wall 10, the restraint member 20, and the positioning member 30.
Hereinafter, details of each element will be described.

<2> Protective wall (Fig. 1)
The protection wall 10 is a structure that is exposed on water to form a wall so as to divide a protection area B formed around the protection target.
The height and depth of the protection wall 10 can be appropriately determined depending on the type of the maintenance target and the assumed factors (things or persons) that may affect the maintenance target.
For example, when it is desired to prevent a person from entering the protection area B, the height of the protection wall 10 from the water may be set to 2 m or more.

<2.1> Buoyancy body (Fig. 1)
In the present embodiment, the protection wall 10 is configured by arranging a plurality of long buoyancy bodies 11 having the longitudinal direction as the longitudinal direction.
The buoyancy members 11 can be connected to each other using a restraining member 20 described later or a connecting member provided separately for the buoyancy member 11.
In addition, the buoyant body 11 can be configured using a material having a low specific gravity such as styrene foam.
Further, the surface of the buoyancy body 11 is used for protecting polyurea or the like so that the buoyancy body 11 is not damaged due to an external factor, and the buoyancy body 11 is not damaged by contact with the surrounding ship X. You may coat by applying a paint.

<2.2> Example of shape of buoyant body (Fig. 2)
In the present invention, the shape of the buoyant body 11 is not particularly limited.
FIG. 2 shows an example of the shape of the buoyant body 11.
The buoyant body 11 shown in FIG. 2A has a semi-cylindrical shape obtained by cutting a cylinder at substantially the center.
The buoyant body 11 shown in FIG. 2B has a substantially flat plate shape by removing both side surfaces of the column while leaving the bottom of the column in a circular shape.
The buoyant body 11 shown in FIG. 2C has a triangular shape in a side view, and has a shape in which a slope 111 is formed outside.
The buoyant body 11 shown in FIG. 2D has a shape cut so as to form a reverse slope 112 on the outside while leaving the bottom of the quadrangular prism. Providing the reverse slope 112 as in this example is effective when the protection wall 10 is intended to prevent a person from entering the maintenance area B.

<2.3> Shared Use as Oil Fence Further, in the present invention, a material capable of absorbing oil may be wound around the outer surface of the buoyant body 11 (not shown).
According to this configuration, the water fence A according to the present invention can also be used as an oil fence.

<3> Restraint material (Figs. 1 and 3)
The restraining member 20 is a member for restraining the plurality of buoyant bodies 11 connected to each other, thereby improving the flatness of the protection wall 10.
As the restraint member 20, a long member such as a string or a band can be used.
FIG. 3 shows a configuration example of the restraining member 20.
In FIG. 3A, the restraining member 20 is constituted by a belt member that is inserted through a loop 12 provided on the outer surface of each buoyant body 11, and the length of the belt member is adjusted to adjust the length of the protective member. Tensile tension is introduced in the circumferential direction. Due to this tension, each buoyant body 11 is drawn toward the center of the maintenance area, and is restrained so that the plane shape of the protection body maintains a substantially circular shape.
In FIG. 3B, the restraining member 20 is configured by a belt member that is inserted into a through hole 13 that is formed to penetrate the buoyant body 11 in a side surface direction. The point that the planar shape of the protective body is maintained by the tension using the belt member is the same as in FIG. 3A described above.

  Also, if an elastic portion is provided in a part of the restraining member 20, when a tension is introduced in the circumferential direction of the protection wall 10 by the restraining member 20, the restoring force of the elastic portion is used to make use of the restoring force. It is also possible to further improve the retention of the planar shape of No. 10.

<4> Positioning material (Figs. 1 and 4)
The positioning member 30 is a member for keeping a maintenance target at a predetermined position in the maintenance area B.
The positioning member 30 may have any configuration as long as it can be installed in the maintenance area B surrounded by the protective wall 10, and a bar, a string, a band, or the like can be used.
A configuration example and a method of using the restraining member 20 will be described with reference to FIGS.

<4.1> Positioning example 1 (FIG. 1) (Formation of holding space by long material)
In FIG. 1, the positioning member 30 is constituted by three long members 31 attached between the buoyant bodies 11 or between the restraining members 20 so as to cross each other in plan view inside the protection wall 10. .
By attaching each long member 31 so that the object to be maintained (corresponding to the anchor Y in FIG. 1) is located in a substantially triangular space surrounded by the long member 31, the object to be maintained is substantially equivalent to the maintenance area B. Can be kept in a central position.

<4.2> Positioning example 2 (FIG. 4) (Formation of holding space by ring material)
In FIG. 4, positioning is performed by a ring member 32 provided with a gate 321 that can be opened and closed in a plane direction, and a cross member 33 extending from the ring member 32 in a radial direction in plan view and attachable to the buoyant body 11 or the restraining member 20. The material 30 is constituted.
By adjusting the length of the cross member 33 so that the ring member 32 is located substantially at the center of the maintenance area B, the gate 321 of the ring member 32 is opened, and the object to be maintained is introduced into the ring member 32. Is a holding space C to be held at a substantially central position of the maintenance area B.

<5> Procedure example of construction method (Fig. 5)
Next, an example of a method for constructing the water fence A according to the present invention will be described with reference to FIG.
The operations described below can be appropriately rearranged or performed in parallel within a consistent range.

<5.1> Towing the water fence (Fig. 5 (a))
First, the water fence A is transported or towed by the small work boat Z on which the worker Z1 is boarded from the ship X to be anchored to the anchor point Y1 of the anchor Y anchored.
At this time, the water fence A may be transported or towed with the buoyant body 11 deployed, or may be towed with the buoyant body 11 temporarily assembled.
In the latter case, after arriving at a predetermined position, a part of the connection of the buoyant body 11 constituting the protection wall 10 may be released, and then the operation of constructing a maintenance area described later may be performed.

<5.2> Construction of a maintenance area with a protective wall (Fig. 5 (b))
After arriving at the predetermined position, the worker Z1 assembles the buoyant body 11 so as to surround the anchor point Y1 and constructs the protection wall 10 that partitions the maintenance area B. At this time, the shape of the protective wall 10 may be adjusted by slightly tensioning the restraining member 20.

<5.3> Positioning work for maintenance target (Fig. 5 (c))
The long material 31 is inserted from the gap between the adjacent buoyancy bodies 11, and the tip of the inserted long material 31 is exposed to the gap between the buoyancy bodies 11 on the opposite side of the insertion destination of the long material 31. Mooring to the restraining material 20.
The operation of inserting the long members 31 is performed at least three times from different directions so that the object to be maintained (the anchor point Y1) is retained in the space surrounded by each long member 31.

<5.4> Final shape adjustment (not shown)
Finally, the length of the restraining member 20 or the long member 31 is adjusted, and the shape of the protective wall 10 is adjusted so that the anchor point Y1 is located substantially at the center of the protective wall 10, thereby completing the construction of the water fence A. I do.

<6> Function / Function As described above, according to the water fence A according to the present invention, the buoyancy body 11 also functions as a wall material for preventing intrusion into the vicinity of the object to be protected. The wall 10 can be built. Further, even when the object to be preserved is an object that is already vertically continuous across the water surface, such as an anchor Y anchored from the ship X, the water fence A can be retrofitted around the object.

[Configuration with a part of long material attached in advance]
A second embodiment of the present invention will be described with reference to FIG.
In the water fence A according to the present invention, for the three or more long members 31 constituting the positioning member 30, the long members 31 excluding at least one of the long members 31 are attached to the protective wall 10 in advance in a manner that the length can be adjusted. You may keep it.
In this case, as shown in FIG. 6A, the length of the long member 31a attached in advance is loosened to introduce the maintenance target in a state where the closed holding space C is not formed. As shown in b), the protection wall 10 may be constructed by attaching the remaining long members 31b to close the holding space C, adjusting the lengths of all the long members 31a and 31b again.

[Add skirt]
A third embodiment of the present invention will be described with reference to FIG.
The water fence A according to the present invention may further include a skirt 40 connected to a lower portion of the protective wall 10 and deployed underwater.
For example, in FIG. 7, the lower end of the buoyant body 11 and the upper edge of the skirt are separately connected, and a new weight 41 is suspended from the lower edge of the skirt 40 so that the skirt 40 extends in the depth direction underwater. It is configured to be surely deployed.
By providing the skirt 40, it is possible to prevent a floating object floating in the water or a diving person from entering the conservation area B.
Further, the water fence A provided with the skirt 40 can also function as a pollution prevention film for preventing the diffusion of the pollution.

Reference Signs List A Water fence B Conservation area C Holding space X Ship Y Anchor Y1 Anchoring point Z Work boat Z1 Worker 10 Protective wall 11 Buoyancy body 111 Slope 112 Reverse slope 12 Loop 13 Through hole 20 Restrictor 30 Positioning material 31 Long material 32 Ring Material 321 Gate 33 Cross member 40 Skirt 41 Weight

Claims (6)

A water fence that can be installed so as to surround a water conservation object in a plan view and form a conservation area,
A protective wall formed by arranging a plurality of buoyancy bodies having a vertical direction as a longitudinal direction,
A restraining member capable of introducing tension in the circumferential direction of the protective wall,
Forming a holding space for holding the object to be maintained inside the protective wall, a positioning material,
At least
The positioning material is made of at least three or more long materials,
Each of the long members is attached to the protective wall or the restraining member so as to intersect with each other in a plan view inside the protective wall,
A space surrounded by the long material is provided as the holding space,
Water on the fence. A water fence that can be installed so as to surround a water conservation object in a plan view and form a conservation area,
A protective wall formed by arranging a plurality of buoyancy bodies having a vertical direction as a longitudinal direction,
A restraining member capable of introducing tension in the circumferential direction of the protective wall,
Forming a holding space for holding the object to be maintained inside the protective wall, a positioning material,
At least
The positioning material,
Ring material with a gate that can be opened and closed in the plane direction,
A cross member extending from the ring member in the radial direction in plan view and attachable to the buoyant body or the restraining member,
Characterized in that the inside of the ring material is the holding space,
Water on the fence. A skirt connected to a lower portion of the protective wall and deployed underwater, further comprising:
Water fence according to claim 1 or 2. It is a construction method of the water fence according to claim 1 ,
The object to be preserved is an object that is vertically continuous across the water surface,
After introducing the object of protection into the inside of the protective wall before construction, construct the protective wall,
Inside the protection wall, the maintenance object is retained in the holding space formed by attaching the three or more long members so that the respective longitudinal directions are different from each other,
How to build a water fence. The maintenance object is an anchor of a ship anchored,
The method for constructing a water fence according to claim 4 . Of the three or more long members, a long member except for at least one is previously attached to the protective wall,
After introducing the object to be protected inside the protective wall, the remaining long material is attached to form the holding space,
The method for constructing a water fence according to claim 4 or 5 .

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