JP2700374B2 - Artificial floating island - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the natural destruction resulting from the development of dams, lakes and marshes without impairing the natural landscape.
A resting place for bird protection or a spawning place for fish propagation is set up to protect the environment.

[0002]

2. Description of the Related Art With the progress of development, natural destruction such as reduction of tidal flats, shallows or seaweed beds has progressed, and the resting places for wild birds and the spawning places for fish have been decreasing, and it is desired to secure them. However, there is no way to secure them at dams where the water level changes, and greening remains insufficient due to difficulty in greening the slope.

[0003]

In a dam or a lake with a limited area where the water level changes, the slope is replaced with greenery to restore and improve the natural scenery, and a rest area for the protection of wild birds or a breeding of fish. For laying eggs and improving water quality.

[0004]

In order to attain this object, mooring of an artificial floating island which can grow naturally, has a function as a resting place for wild birds or a spawning place for fish, and is in harmony with the natural landscape.

In the artificial floating island, a bottom net is stretched on a frame having an arbitrary outer shape assembled with strips, soil for plant growth is laid on the bottom net, and the frame is floated on the water surface by a float. It should be kept at an appropriate height.

[0006] The external shape of the artificial floating island is selected so as to be harmonious without impairing the natural scenery.

[0007] When water is required more than natural rainfall for plant growth, the bottom net is wetted by wind waves to maintain the water supply height, or a water absorption mechanism from the water surface is provided. Good.

[0008] As a water absorption mechanism, a rope, a net or a fiber lump is dripped from the bottom net on the water surface into the water to absorb water for the plants on the island to grow by the capillary action of the fiber, and the spawning site of the fish. So that

A slope or a low portion reaching the water surface is provided in a part of the frame of the artificial floating island so that it becomes a resting place for wild birds as an alternative to a tidal flat or a shallow water.

[0010] A part of the float of the artificial floating island is used as a ballast tank, and water is supplied and drained by a pump to change a draft line so that a lower part can be made dry or wet.

A weight is provided in the middle of the mooring line for mooring the artificial floating island. When the water level decreases, the weight lands on the floating island to prevent the weight from being applied to the floating island. Make the floating island sink.

[0012]

[Function] Since the island is a floating island, it is not affected by the water level, and the upper surface is a resting place for wild birds, and the lower surface is a spawning place for fish. be able to.

[0013] By selecting the holding height of the artificial floating island or installing a water absorbing mechanism, the water necessary for growing the plant is supplied without manual operation.

By providing an inclined road or a low part reaching the water surface in a part of the frame of the artificial floating island, the landing of the waterbird on the shore is facilitated, and an environment suitable for a resting place for wild birds is provided.

By making a part of the float a ballast tank and supplying and draining the water with a pump, the artificial floating island can float, sink or tilt, and the lower part can be made dry or wet.

A weight is provided on the mooring line of the artificial floating island. When the water level is lowered, the weights land on the floating island so that the weight of the weight is not applied to the floating island. If the floating island is raised only by the water level corresponding to the weight of the weight, the lower part is also in a dry state. In addition, when the water level rises, the weight is released from the floor and the floating island is lowered by the water level corresponding to the weight of the weight , so that the lower part can be brought into a wet state.

[0017]

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

FIG. 1 is a plan view of one embodiment of the present invention, and the left half shows a frame 1 from which a bottom net and an embankment have been removed. Frame 1
In the present example, the outer frame member 1a, the block divided frame member 1b, the cross beam 1c, the float mounting member 1d, and the joist 1e have a structure in which the members which are divided into a land-transportable size are integrally joined. , Is held on the water surface by the float 4. The outline of the floating island is a gourd-shaped example.

The center of FIG. 1 shows a state in which the embankment 3 has been removed. Reference numeral 2 denotes a bottom net, which may be a single bottom net if the mesh and strength are appropriately selected. An example is shown in which a bottom net 2b for the purpose of holding a fine embankment in which the embankment 3 does not flow out is superimposed on a bottom net 2a for the purpose.

FIG. 2 is an enlarged sectional view taken along the line AA of FIG.
The embankment 3 is a soil for growing plants, the lower part of which is fine granules 3a containing pearlite or expanded resin particles and the upper part is soil 3b, both of which are lightweight and excellent in water retention and drainage.

Reference numeral 5 denotes a net or artificial turf, which is surrounded by the outer frame material 1a on the water surface to conceal the space between the frame 1 and the water surface, thereby achieving harmony with the natural scenery.

Reference numeral 6 denotes a mooring line or a mooring chain for mooring at a predetermined place.

FIG. 3 shows a bottom net 2 with a part of the frame being brought close to the water surface.
FIG. 3 is an explanatory view of an example in which an aquatic plant such as Yoshi is directly rooted in the bottom, and the bottom net 2 is maintained at a height suitable for the growth of the aquatic plant with respect to the water surface.

FIG. 4 is an explanatory view of an example in which a rope 8 is suspended from the embankment 3 through the bottom net 2 into the water. The underwater area is where fish spawn.

FIG. 5 is an explanatory view of an example in which a net 9 is suspended from the embankment 3 through the bottom net 2 into the water. The net 9 absorbs water necessary for the growth of plants and serves as a spawning place for fish. It is like that.

FIG. 6 is an explanatory view of an example in which a mat-like or block-like fiber lump 10 is held between the bottom net 2 and the water surface. Alternatively, a synthetic resin fiber mass is used to suck up the water necessary for the growth of the plant and to increase the fish as a spawning place. In addition, the fiber lump 10
If you surround the vegetation, the plants will grow naturally on the surface, and it will be in harmony with the natural scenery and will also be a spawning ground for fish.

FIG. 7 is an explanatory view of an example in which a landing ramp 7 for water birds is provided in a part of the outer periphery of the artificial floating island.

FIG. 8 is a plan view showing a frame structure of an example in which the inclined portion 11 is provided on both sides of the central portion of the gourd-shaped frame 1, and the lower portion of the inclined portion is submerged.

FIG. 9 is a sectional view taken along the line BB of FIG. In order to prevent the embankment from flowing out, the sloping portion 11 that is submerged uses a plant fiber mass or a synthetic resin fiber mass instead of the soil, and furthermore, the holding net 12 prevents the embankment from flowing out.

FIG. 10 is an explanatory view showing one example of a view taken along the line CC of FIG. 8, showing an example in which a part of the float is used as a ballast tank 13 and water is supplied and drained by a water supply pump 14a and a drainage pump 14b. . When the ballast tank 13 is supplied with water, it sinks, and when it is drained, it rises, and the inclined portion 11 becomes a tideland as shown in the rising water level in FIG.

FIG. 11 is an explanatory view showing an example in which the water in the left and right ballast tanks 13 is moved by the moving pump 14C to tilt the artificial floating island. The side that rises due to the slope is in a tidal flat, and the side that sinks is in a wet state. At the water level at the time of the inclination in FIG. 9, the inclined part 11 becomes a tidal flat.

FIG. 12 is an explanatory view showing an example in which a weight 18 is provided in the middle of the mooring line 6. The solid line indicates when the water level is low,
Since the weight 18 is on the floor, the weight of the weight 18 is not applied to the floating island. Therefore, the floating island is emerging. The two-dot chain line indicates the time when the water level rises, the weight 18 is off the floor, and the floating island is sinking by the weight of the weight 18. At the rising water level in FIG. 9, the slope 11 becomes a tidal flat.

[0033]

By installing an artificial floating island according to the present invention, a protection stage for resting birds or a spawning place for fish can be secured without damaging the natural scenery in dams or lakes with limited water levels where water levels change. Fish can be multiplied, and natural destruction due to development progress can be prevented.

The artificial floating island is supplied with water necessary for the growth of the plant without manual operation, and the growth of the plant contributes to harmony with the natural landscape. In addition, slopes can be replaced with green slopes in dams where slope greening is difficult, and landscapes can be created with water greening and floating beds.

By providing an inclined portion or a low portion on a part of the artificial floating island, it becomes a substitute for a shallow water or a tidal flat and becomes a resting place for wild birds.

The artificial floating island is periodically raised, settled, or inclined, and a part of the artificial floating island is repeatedly changed between a tidal state and a wet state, so that the function of substituting for shallow water or tidal flat can be enhanced.

When the water level of a dam for a pumped storage power station changes periodically, the floating island is periodically raised and lowered by attaching and detaching a weight provided in the middle of the mooring line to replace a shallow or tidal flat. Can be made.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory diagram showing an example in which aquatic plants are directly rooted on a bottom net.

FIG. 4 is an explanatory diagram showing an example in which a rope is hung from a bottom net.

FIG. 5 is an explanatory diagram showing an example in which a net is suspended from a bottom net;

FIG. 6 is an explanatory diagram showing an example in which a fiber mass is held between a bottom net and a water surface.

FIG. 7 is an explanatory diagram showing an example in which a landing ramp for waterfowl is provided.

FIG. 8 is a plan view showing a frame configuration of an example in which inclined portions are provided on both sides of a central portion of a gourd-shaped frame.

FIG. 9 is a sectional view taken along line BB of FIG. 8;

FIG. 10 is an explanatory diagram showing an example of a pipeline for supplying and draining a ballast tank.

FIG. 11 is an explanatory diagram showing an example of a pipeline for moving water in left and right ballast tanks.

FIG. 12 is an explanatory diagram showing an example in which a weight is provided in the middle of a mooring line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame body 1a External frame material 1b Block division frame material 1c Cross beam 1d Float mounting material 1e Joist 2 Bottom net 2a Coarse bottom net 2b Fine bottom net 3 Embankment 3a Fine grain 3b Customer soil 4 Float 5 Net or artificial grass 6 Mooring line or mooring chain 7 Landing ramp 8 Rope 9 Net 10 Fiber lump 11 Inclined part 12 Holding net 13 Ballast tank 14 Pump 14a Water supply pump 14b Drain pump 14c Transfer pump 15 Air inlet / outlet 16 Pipe line 17 Valve 18 Weight 19 Anchor

Claims (4)

(57) [Claims] 1. A bottom net is stretched on a frame body having an arbitrary outer shape constituted by assembling strip materials in a raft shape, and a soil for plant growth is embanked on the bottom net, and the frame body and the bottom net are connected to each other. in artificial floating island held above the water surface by a plurality of floats, depending from the bottom grid was stretched on a frame ropes, nets or fibrous mass in water, planting
An artificial floating island that combines the water absorption mechanism that supplies the water necessary for the growth of animals with the spawning ground for fish. 2. The artificial floating island according to claim 1, wherein an inclined portion or a low portion reaching the water surface is provided in a part of the frame. 3. The artificial floating island according to claim 2 , wherein a part of the float is used as a ballast tank, and water is supplied / drained by a pump to change a draft line. 4. The artificial floating island according to claim 2 , wherein a weight is provided in the middle of the mooring line for mooring the floating island, and when the water level is lowered, the weight is landed, and when the water level is raised, the weight is lifted to sink the floating island by the weight of the weight. An artificial floating island, wherein a predetermined change in water level occurs on the floating island.