JP2000290959A - Artificial floating land - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly arrange an artificial floating land by preventing running-on to an existing object even when there is the projecting existing object on the water surface by constituting the artificial floating land by connecting plural units of unit floating lands connected so as to form at least one or more opening parts in a plan view. SOLUTION: In a unit floating land 12, a vegetation base is wound on a columnar core body composed of a resin material having sufficient buoyancy to be formed in a cylindrical shape as a whole so that an aquatic plant is planted in a part exposed to the water surface. An installing metal fitting installed on the unit floating land 12 is fastened to horizontal ropes 14a of a connecting net 14 and vertical ropes 14b orthogonal to these to connect plural unit floating lands 12 in a ladder shape to constitute a floating land 10. At this time, since the floating land 10 forms a large number of opening parts 15, an existing object, for example, a projecting part on the water surface of a tetrapod S is interposed in these opening parts 15 so that the floating land 10 can be arranged. Thus, running-on to the existing object can be prevented even in an existing object existent place so that the floating land 10 can be properly arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an artificial floating island, and more particularly to an artificial floating island having a structure in which a plurality of unit floating islands are connected and integrated.

[0002]

2. Description of the Related Art Conventionally, it has been common practice to install artificial floating islands in lakes, marshes, rivers, etc., and to vegetate aquatic plants, such as reeds, to purify the water quality of lakes, etc., or to maintain the landscape. Have been done.

An artificial floating island of this kind is constructed by attaching a vegetation base made of natural fibers such as palm and synthetic fibers to the surface of a buoyant float such as foamed polyethylene.
Generally, the whole shape is formed in a plate shape having a certain area.

[0004]

By the way, in lakes, rivers and the like, there are often existing objects, such as rocks and tetrapots, which irregularly protrude above the water surface. However, when the conventional artificial floating island is arranged as described above, there may be a disadvantage that the artificial floating island runs over an existing object. In other words, when the floating island rides on the existing structure, the vegetation base is separated from the water surface and dries, which causes the plants to wither, or the floating island is tilted to give a sense of incongruity, or the plants are withered as described above. Problems such as spoiling.

The present invention has been made in order to solve the above-mentioned problem, and even when there is an existing object such as a rock or a tetrapod projecting above the water surface, it is possible to prevent the object from climbing onto the existing object and to properly prevent the object from getting on the existing object. It aims to provide an artificial floating island that can be installed.

[0006]

In order to solve the above problems, the present invention provides an artificial floating island formed by connecting a plurality of unit floating islands, wherein at least one of the plurality of unit floating islands is viewed in plan. (Claim 1).

[0007] According to this artificial floating island, the floating island can be installed in a state where an existing object such as a rock or a tetrapot that projects irregularly on the water surface is interposed in the opening.

[0008] In particular, if the plurality of unit floating islands are connected so as to be mutually displaceable (claim 2), the size and position of the opening can be changed.

Further, if the unit floating islands are connected in a grid pattern (claim 3), the structure becomes simple and the manufacture and installation on rivers and the like become easy. In the description of the second aspect, the term "lattice-like" includes that connected in a so-called "ladder-like".

Further, if each unit floating island is formed in a column shape (claim 4), it becomes difficult for the unit floating island to ride on existing objects such as rocks and tetrapots.

A connecting member made of a cord-like body may be provided, and the unit floating islands may be attached to the connecting member so as to be connected to each other (claim 5). In this manner, some unit floating islands can be removed while maintaining the shape of the entire artificial floating island. In the description of the claims,
The “cored strip” is intended to include a chain and the like in addition to a so-called wire rope and a fiber rope.

[0012]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic plan view showing an artificial floating island according to the present invention, and shows a state where the artificial floating island is installed near a river embankment. As shown in this figure, the artificial floating island 10 (hereinafter abbreviated as floating island 10) has a plurality of large and small unit floating islands 12, and these unit floating islands 12 are connected in a ladder shape. The floating island 10 is moored by being anchored via a wire rope 16 to an anchor 17 submerged at the bottom of the lake and a mooring hook 18 provided on a bank. In addition, mooring of the floating island 10 may be performed using a chain instead of a wire rope, for example, as necessary.

As shown in FIGS. 2 and 3, the unit floating islands 12 are formed on a columnar core 20 made of a resin material having a sufficient buoyancy, such as foamed polyethylene, on a vegetation made of natural fibers such as palm and synthetic fibers. The base 22 is formed by being wound, and has a columnar shape as a whole.
An aquatic plant 13 such as a reed is planted at a specific location on the peripheral surface, specifically, a portion exposed to the water surface described later.

At both ends of the unit floating island 12 in the longitudinal direction, mounting brackets 24 for mounting the unit floating island 12 to a connecting net 14 described later are mounted. The mounting bracket 24 is an annular member having flanges 26a, 26b for fastening at both ends, and is wound around the peripheral surface of the vegetation base 22 as shown in the figure, and the two flanges 26a, 26b abut each other. In this state, they are attached to the unit floating island 12 by being fastened to each other by the bolts and nuts 28. In addition, each mounting bracket 24
Are mounted such that the flange portions 26a and 26b are located at the same position in the circumferential direction of the unit floating island 12.

The unit floating island 12 configured as described above is
When installed on the river R, the buoyancy of the core body 20 and the weight of the vegetation base 22 and the mounting bracket 24 are balanced, and a part of the vegetation base 22 is exposed on the water surface as shown in FIG. In particular, due to the weight of the two flanges 26a and 26b of the mounting bracket 24 and the bolts and nuts 28 that fasten them, the portion of the vegetation base 22 opposite to the flange portions 26a and 26b is It is always exposed above the water surface. Therefore, the aquatic plant 13
Planted on a portion of the vegetation base 22 exposed above the water surface, when the unit floating islands 12 are installed on the river R, water necessary for growing the aquatic plants 13 is supplied from the river R via the vegetation base 22. It is supposed to be.

The unit floating islands 12 are connected by connecting nets 14.
(Connecting member). That is, the unit floating islands 12 are attached to the connecting nets 14, respectively, so that the unit floating islands 12 are connected to each other via the net 14.

The connecting net 14 includes a pair of horizontal ropes 14a (cored strips) extending along the river R (in the horizontal direction in FIG. 1) and a plurality of horizontal ropes 14a extending in a direction perpendicular to the horizontal rope (in FIG. 1). As shown in FIG. 1, the vertical ropes 14b are arranged at regular intervals in the direction of the river R, thereby forming a ladder shape as a whole. Note that the connecting net 14 may be configured by a chain instead of the ropes 14a and 14b.

As shown in FIGS. 2 and 3, the unit floating island 12 is attached to the connecting net 14 by arranging a rope 14a or 14b between the flanges 26a and 26b of the mounting bracket 24 attached to the unit floating island 12. And flanges 26a, 26
b with bolts and nuts 28 to tighten the ropes 14a, 14b
It is performed by pinching. In addition, flange 2
The ropes 6a and 26b are fastened by two bolts and nuts 28 (up and down in the figure).
a and 14b are clamped by flanges 26a and 26b in a state arranged between the upper and lower bolts and nuts 28.

As shown in FIG. 1, for each horizontal rope 14a of the connecting net 14, each vertical rope 14b
Each of the unit floating islands 12 is attached to each of the vertical ropes 14b, and two or three unit floating islands 12 are attached to each vertical rope 14b. As a result, the unit floating islands 12 are connected in a ladder shape to form the floating island 10.

According to the floating island 10 configured as described above,
Since a large number of openings 15 are formed in the floating island 10 by connecting the unit floating islands 12 in a ladder shape, in a case where a tetrapot S for preventing erosion is installed near the embankment, FIG. As shown in FIG. 1, the floating island 10 can be installed while avoiding the tetrapot S by interposing the projecting portion of the tetrapot S above the water surface in the opening 15. Therefore, even when the floating island 10 is installed in the place where the tetrapot S is located, the floating island does not run on the tetrapot unlike the conventional plate-shaped floating island.

In particular, since the floating islands 10 are deformable by connecting the unit floating islands 12 through the connecting nets 14, even if the tetrapods S project irregularly on the water surface, the floating islands 10 can be opened. By appropriately deforming the shape of the portion 15, the floating island 10 can be installed in a state where the tetrapot S is well interposed in the opening 15.

In the floating island 10, the unit floating islands 12 are connected to the common connecting net 14 as described above, so that the unit floating islands 12 are connected via the connecting net 14. For example, even when the damaged unit floating island 12 is replaced or repaired, only the corresponding unit floating island 12 can be removed without damaging the overall shape while the floating island 10 is installed. Therefore, there is an advantage that maintainability is good. In addition, the interval between the existing objects such as the tetrapot S is extremely narrow, and the unit floating island 1 is located between the existing objects.
In the case where it is not possible to interpose the floating island 10, the floating island 10 can be easily
Can be installed. Therefore, there is also an advantage that the degree of freedom of the installation location of the floating island 10 is high.

Incidentally, the floating island 10 described above is one embodiment of the artificial floating island according to the present invention, and its specific configuration can be changed as appropriate without departing from the gist of the present invention.

For example, in the floating island 10 described above, the unit floating island 1
2 are connected in a ladder shape, but this is the simplest example of a configuration in which unit floating islands 12 are connected in a grid shape,
The unit floating islands 12 are arranged in a grid such that a number of 5s are arranged side by side.
May be connected. In addition to connecting the unit floating islands 12 in a grid pattern, for example, as shown in FIG. 4, the unit floating islands 12 may be connected so that a triangular opening 15 is formed in a plan view. In short, the unit floating islands 12 may be connected in a net-like manner so as to form a large number of openings 15 for interposing an existing object such as a tetrapot S.

In the floating island 10 described above, a connecting net 14 previously formed in a ladder shape is provided, and the unit floating island 12 is attached to the connecting net 14, so that each unit floating island 1
2 are connected in the form of a ladder.
They may be directly connected in a ladder shape using a wire rope, a chain, a shackle, or the like. In this case, the unit floating islands 12 may be connected so as to be mutually displaceable, that is, such that the unit floating islands 12 can move in any direction.

Further, in the above embodiment, the unit floating island 1
Although 2 is formed in a columnar shape, other shapes such as a prismatic shape may be adopted. In short, the most suitable shape may be adopted in consideration of the installation location of the floating island 10 and the like. However, in the case of the column-shaped unit floating island 12 of the above embodiment, the surface is a curved surface, so that it is difficult to ride on an existing object such as a tetrapot and the like, and it fits in a gap between the existing objects. There is an advantage that it is easy.

In the above embodiment, the case where the floating island 10 is installed at the place where the tetrapot S exists is described. However, the floating island 10 may be installed where there is no existing thing such as the tetrapot S. No problem.

[0029]

As described above, the present invention is an artificial floating island formed by connecting a plurality of unit floating islands, wherein the plurality of unit floating islands have at least one opening formed in a plan view. Floating islands can be installed with existing objects, such as rocks and tetrapots, that project irregularly above the water surface interposed in the openings. Even in a place where an object is present, it is possible to prevent the vehicle from climbing onto the existing object and appropriately install the artificial floating island.

In particular, if the plurality of unit floating islands are connected so as to be freely displaceable with each other, the size and position of the opening can be changed, and the degree of freedom of the installation location of the artificial floating island can be increased. .

Further, if the unit floating islands are connected in a grid pattern, the structure becomes simple, and the manufacture and installation on rivers and the like become easy.

Further, if each unit floating island is formed in a columnar shape,
It becomes difficult for a unit floating island to ride on existing objects such as rocks and tetrapots.

Further, if the unit floating islands are attached to a common cord, so that they are connected to each other via the cord, some unit floating islands are removed while maintaining the shape of the artificial floating island as a whole. As a result, the maintainability is improved, and the degree of freedom of the installation location of the artificial floating island is further increased.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a configuration of an artificial floating island according to the present invention.

FIG. 2 is a side view of a unit floating island constituting an artificial floating island.

FIG. 3 is a front view (partially sectional view) of a unit floating island constituting an artificial floating island.

FIG. 4 is a schematic plan view showing another configuration of the artificial floating island.

[Explanation of symbols]

 Reference Signs List 10 artificial floating island 12 unit floating island 14 connecting net 14a horizontal rope 14b vertical rope 15 opening 16 wire rope 17 anchor 18 mooring hook S tetrapot R river

Claims (5)

[Claims] 1. An artificial floating island formed by connecting a plurality of unit floating islands, wherein the plurality of unit floating islands are connected such that at least one or more openings are formed in a plan view. And artificial floating island. 2. The artificial floating island according to claim 1, wherein the plurality of unit floating islands are mutually displaceable. 3. The artificial floating island according to claim 1, wherein the unit floating islands are connected in a grid pattern. 4. The artificial floating island according to claim 1, wherein each of the unit floating islands is formed in a column shape. 5. The artificial body according to claim 1, further comprising a connecting member formed of a cord-like body, wherein the unit floating islands are connected to each other by being attached to the connecting member. Ukishima.