JP2899529B2 - Artificial floating greenery ground - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial floating greenery ground for artificially promoting greening of a slope ground around a dam lake.

[0002]

2. Description of the Related Art In the ground around a dam lake or the like, a sudden change in water level causes the soil to be washed away or the moisture content of the soil to change, making it difficult to provide an environment suitable for plant growth. For this reason, there is a problem in the natural environment that the plant does not grow and the existing plant withers. In addition, as described above, since it is generally difficult for plants to grow, the ground is often exposed, and the surrounding landscape is often damaged.

[0003] As a revegetation means for solving these problems, a method of spraying plant seeds or the like directly onto the ground has been used. However, there was a low probability that seeds would drop and grow due to rapid fluctuations in water level. In order to solve this, a method of directly attaching plants to the ground or a method of directly transplanting to the ground have been used, but plants are soaked by rising water level, or dry and die by falling water level. As a result, a sufficient effect could not be obtained.

In order to solve such a conventional problem, Japanese Unexamined Utility Model Publication No. Hei 4-26237 discloses, as shown in FIG. 7, an uppermost layer which is composed of three layers having a wide flat surface and which forms a vegetation layer 91 in which seeds are enclosed. Layer, an intermediate layer 92 serving as a water-impermeable layer, and a floating layer 9
3 and a bag 94 that covers and integrates the three layers.
And an artificial floating body greening ground 90 having a fixing tool 95 fixed to the ground at one end of the bag, according to which the lower layer of the artificial floating greening ground 90 is a floating layer 93. As a result, this rises or falls in accordance with fluctuations in the water level, so that the inhabiting plants are not affected by the flooding and the plants can always inhabit the water surface. In addition, when the artificial floating greenery ground 90 is on the water, the water works by the intermediate layer 92, which is a water-impermeable layer, so that water does not directly touch the roots of the plants, and when it is on the rock, it grows mainly by rainwater. I will be. Further, it is described that a bag made of nonwoven fabric can be used to replenish moisture by utilizing its capillary phenomenon.

[0005]

Conventionally, greening has been performed by the above-described method, but there have been the following problems. In Japanese Utility Model Laid-Open Publication No. Hei 4-26237, there is a problem that it is difficult to adjust or change the greening area because it is composed of three layers having a wide flat surface.

Further, when the artificial floating body greening ground 90 is floating on the water surface, the amount of water absorbed is determined by the permeability coefficient of the intermediate layer 92 which is a water-permeable layer, and there is a problem that it is difficult to adjust the amount of water absorbed.

In a state where the artificial floating greenery ground 90 is on the rock due to a decrease in the water surface, the large area 3
In the layer, water moves to the lower slope of the rock,
There was a problem that the water content was significantly different between the upper part and the lower part of the slope.

[0008] Similarly, when water is replenished by rainwater in a state where the artificial greening ground 90 is on the bedrock, the vegetation layer 91 is temporarily moistened as described above, but as described above, the vegetation layer 91 is inclined so that the large area of the vegetation can be obtained. There was a problem that water moved below the three-layered slope, and that rainwater could not be sufficiently stored, particularly, it could not be uniformly stored over the entire artificial floating body greening ground 90.

The present invention has been made in order to solve the above-mentioned problems, and is an artificial floating body having a more appropriate water storage function and a water content adjustment function which are more appropriately installed on a slope such as the ground around a dam lake. The purpose is to provide greening ground.

[0010]

The artificial floating body greening ground according to the present invention has a floating body layer formed of an integrally molded article of a closed-cell synthetic resin foam, and a molded article for storing water arranged on the floating body layer. A water retention layer consisting of, disposed on the water retention layer,
A greenery ground comprising a vegetation layer, which is a soil layer in which seeds are encapsulated, wherein one end of the greenery ground floats on the water surface at an elevated water surface position, and the greenery ground falls on a ground surface at a lowered water surface position. It is characterized in that it is fixed at a position on a slope of the ground so as to be mounted and mounted on a surface.

The present invention also provides the artificial floating greenery ground, wherein the water retention layer has a unitary water retention layer each having a rectangular outer peripheral frame portion and a concave portion at the bottom thereof, A plurality of them are arranged vertically and horizontally so that the whole forms a rectangular shape.

[0012]

In the artificial floating greenery ground according to the present invention, a floating body layer composed of an integrally molded article of a closed-cell synthetic resin foam and a water retaining layer composed of a molded article for storing water disposed on the floating body layer are provided. A greenery ground comprising a vegetation layer, which is a soil layer enclosing seeds, disposed on the water retention layer,
One end thereof is at a position on the slope of the ground such that the greenery ground floats on the water surface at the raised water surface position and the greenery ground is mounted on the slope of the ground at the lowered water surface position. Since it is fixed, it operates as follows.

That is, when the water surface is high, the floating body floats on the water surface by the floating action of the floating body layer, the vegetation layer is constantly kept on the water surface, and the vegetation layer is immersed in the water by the fluctuation of the water level. In addition, it is possible to prevent the seeds in the vegetation layer from flowing out and the plants themselves from being immersed in water so as not to be affected by the growth thereof. On the other hand, when the water level drops, water is retained in each unit water storage layer, and rainwater is stored in the water storage layer, or the water flowing on the rock during rainfall is sucked up by the water supply sheet to retain water. Intake in the formation and store water. As a result, water can always be stored in the water retaining layer, and the plants in the vegetation layer can be constantly supplied with water, and the vegetation layer can be favorably grown and maintained. For this reason, maintenance of greening for a long time by greening ground can be achieved.

Also, in the present invention, in the artificial floating body greening ground, the water retaining layer has a rectangular outer peripheral frame-shaped portion and a unit water retaining layer having a concave portion at the bottom thereof, and a water retaining layer is formed on the floating body layer. Since the plurality of units are vertically and horizontally arranged so as to form a rectangular shape as a whole, the unit water-retaining layer can surely retain water.

[0015]

【Example】

Embodiment 1 FIG. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an artificial floating body greening ground 1000 according to a first embodiment of the present invention, and FIG. 2 is a perspective view of a unit greening ground 100 according to the first embodiment of the present invention (FIG. 2 (a)).
FIG. 2B is a top view of the unit greening ground 100 with the vegetation layer 10 removed. FIG. 3A is a schematic sectional view showing the vegetation layer 10, and FIG. 3B is a side view of the unit greening ground as viewed from the side.

In FIG. 1, 10 is a vegetation layer, 20 is a unit water retention layer, 30 is a floating body layer, 40 is a water supply sheet, 60 is a connecting rope, and 61 is a net. Reference numeral 23 denotes a frame portion surrounding the outer periphery of the unit water retaining layer 20 in a rectangular shape. The unit water retaining layers 20 are arranged in a 3 × 3 square shape to form the unit greening ground 100. The artificial floating greenery ground 1000 is formed by connecting two rows in the vertical direction and three rows in the horizontal direction. In FIG. 2, reference numeral 31 denotes a slit provided in the floating body layer 30. In FIG. 3, 11 is a light artificial soil, 1
Reference numeral 2 denotes a seed-bag, 13 denotes a nonwoven fabric, 21 denotes an ESP water retention pad formed on the bottom surface of the unit water retention layer 20. In the figure, the same reference numerals indicate the same or corresponding parts.

The structure of the unit greening ground 100 will be described with reference to the drawings. The unit greening ground 100 is composed of an integrated floating body layer 30 made of an EPS (styrofoam) molded product, and a dish-like layer made of the same EPS molded product disposed thereon. And the vegetation layer 10 placed on the dish-shaped portion of the unit water retention layer 20. The unit water retention layer 20 is manufactured as follows.

The floating body layer 30 is made of an EPS molded product of 2000 m.
m × 2000 mm × 165 mm, water supply sheet 4
Fig. 2 (b) shows a slit 31 with a width of 2.5 mm for passing 0
It is provided as shown in FIG. The unit water retention layer 20 is also E
It is made of a PS molded product, has a bottom area of 665 × 665 and has a dish shape, and is arranged above the floating body layer 30 so as not to block the slit 31. In the unit greening ground 100 of the first embodiment, the unit water retaining layers 20 are arranged in a 3 × 3 square shape, and urethane coating is applied to the entire surface to protect the EPS resin.

As shown in FIG. 2 (b), the floating body layer 30 and the water retaining layer thus formed have slits provided in the floating body 30 layer for each of the unit water retaining layers 20, as shown in FIG. Ascending the side surface from the through hole 31 or the lower outside of one side surface thereof, cross the frame-like portion 23 of the unit water retaining layer 20, cross over the upper surface of the concave portion on the bottom surface of the unit water retaining layer 20, and further form the unit water retaining layer 20 Climb the frame 23 on the opposite side, go down over the frame 23 and along the outer surface of the side to the lower outer side of the side, and further slit other through holes 31 provided in the floating body layer 30. Alternatively, a water supply sheet 40 extending on both sides to extend below both ends of the floating body layer 30 is disposed, and the water supply sheet 40 is provided with the rectangular unit water holding layer 20.
In two orthogonal directions.

As shown in FIG. 3 (a), the vegetation layer 10 has a seed layer 12 made of a sack bag with seeds placed on a lightweight artificial soil 11, and this is covered with a soil filter A ( (Product name). Here, the lightweight artificial soil 11 may be natural soil, but in this embodiment, light artificial soil was used to adjust buoyancy.

Each unit water retaining layer 20 formed as described above
FIG. 2 shows the vegetation layer 10 in a portion surrounded by a frame 23 of FIG.
(a) and place as shown in FIG. 3 (b).

In order for the unit green ground 100 to float on the water surface to such an extent that the vegetation layer 10 is exposed from the water surface, the weight of the vegetation layer 10 of each unit green ground 100 or the floating body layer 30 is required. May be set as appropriate.

The unit greening ground 10 thus obtained
One unit greening ground 100 is formed by connecting the net 61 so as to cover the entire area of zero.

Next, an assembling method, an installation method, and an operation of the artificial floating body greening ground of the first embodiment will be described.

FIGS. 4 to 6 show the artificial floating body greening ground 1.
FIG. 4 is a cross-sectional view showing a state where the plant is planted and greening is performed. FIG. 4 shows a state where the water surface is low, FIG. 6 shows a state where the water surface is high, and FIG. I have. In the figure, 62 is a nylon binding belt, 70
Is water in the water retention pad 21 provided on the unit water retention layer 20, 80 is a slope, and 81 is a fixing tool driven into the slope, and the same reference numerals as those in FIG. The part is shown.

The method for assembling the artificial floating greenery ground 1000 according to the present embodiment is as follows. The unit greenery ground 100 configured as described above according to the area to be greened is formed into a rectangular shape having a predetermined number in the vertical and horizontal directions. A plurality of green ground bodies are formed by arranging a plurality of green ground bodies, and each of the green ground bodies is arranged vertically and horizontally along a vertical line and a horizontal line connecting the edges of each unit green ground 100 of the green ground body. The ropes 60 are disposed over the entire length as shown in FIG. 1, and the vertical and horizontal ropes 60 and the nets 61 of the unit greening grounds 100 are provided at several locations on the upper side of each unit greening ground 100. Are tacked with a nylon binding belt 62. FIGS. 4 to 6 are side sectional views of the artificial floating greenery ground 1000 bound as described above.

Further, such a plurality of unit greening grounds 10
As described above, the artificial floating greenery ground 1000 made of zero is formed by binding the net 61 on the upper side of the upper surface of each unit greenery ground 100 and the connecting rope 60 with the nylon binding belt 62, so that a desired greening area is obtained. At the same time, the size of the artificial floating greenery ground 1000 can be freely adjusted, and when the water surface is decreasing, as shown in FIG. And the binding part of the unit greening grounds 100 acts as a hinge part. Thereby, each unit greening ground 100 can be maintained in a more appropriate state.

Next, a method of installing the artificial floating greenery ground of the first embodiment and the operation thereof will be described. The installation position of the artificial floating body greening ground 1000 is determined by a fixture 8 for fixing one end thereof.
The position 1 is set so that the vegetation layer 10 of the green ground is exposed on the water surface even when the water level increases, so that the vegetation layer 10 is at a height position on the slope. When the artificial floating body greening ground 1000 is installed, if the water surface is low, the greening ground 10
00 is lowered on the slope from above the slope shown in FIG. 4 so that the upper end thereof comes to the position of the fixture 81 in FIG. At this time, the three unit greening grounds 100 are all located on the slope 80 because the water surface is low.

When the artificial floating greenery ground 1000 is mounted on the slope as shown in FIG. 4, each unit water retaining layer 20 is inclined as shown in FIG. Water is stored in the water retaining pad 21 of each inclined unit water retaining layer 20 due to rain falling from above. For this reason, the space under the vegetation layer 10 of the unit greening ground 10 is always in a wet state, and the plants in the vegetation layer 10 do not die and die even if the period during which no rain falls continues for a long time.

Furthermore, in the place where the artificial floating greenery ground 1000 is located, branch water such as river water may flow down the slope 80 even when there is no local rainfall. Water supply sheet 4 with capillary effect
0 picks up this water and is supplied above the unit water retention layer 20 through a water supply sheet 40 provided so as to cover each unit water retention layer 20, whereby the vegetation layer 1
0, that is, the upper surface of the water retention pad 21 is constantly kept in a wet state.

In particular, in the case of FIGS. 4 and 5 in which the artificial floating greenery ground 1000 is on the rock, the water replenished by rainfall or the like is retained in each of the water retention layers 20 and the water retention pads 21 which are divided into small sections. The artificial floating greenery ground 10 of the present invention is compared with the artificial floating greenery ground 90 shown as a conventional example in FIG.
00 can be uniformly and more water-retained.

Next, when the water level rises from the state shown in FIG. 4, as the water level rises, as shown in FIG. 5, only the lowermost unit greening ground 100
It turns around the upper end side and floats on the water surface, and the other two unit greening grounds 100 are still placed on the slope of the ground. This is because the adjacent unit greening ground 100 is formed by tacking the rope and the net 61 so that they can be bent mutually.

When the water level further rises from the state shown in FIG. 5, the other two unit greening grounds 100 can be bent together with the other two unit greening grounds as the water level rises. It further rises while rotating about its upper end side, and as a result, as shown in FIG. 6, all three unit greenery grounds 100 float on the water surface. In the state shown in FIG.
The artificial floating body greening ground 1000 has its unit greening ground 10
0 floats on the water surface, and in that state, each unit greening ground 1
The rope 60 and the net 61 are at the end of the upper end of the side surface of 00.
At several places, they are bound by a nylon binding belt 62 and connected to each other, and float on the water surface.

In the state where the artificial floating greenery ground is floating above the water surface, each unit greenery ground 100 rises or falls as the water surface fluctuates, and the vegetation layer of the unit greenery ground is raised. The plants will not be submerged under the influence of the water level fluctuation, and the plants will not wither and die.

Further, when the artificial floating greenery ground is on the water surface, the water that falls from above is stored in each unit water retention layer 20 by the rain falling from above, and even when there is no rain, Is supplied onto each unit water retention layer 20 by a water supply sheet 40 exhibiting a capillary phenomenon, and the bottom of the vegetation layer 10, that is, the upper surface of the water retention pad 21 is constantly kept in a wet state. Therefore, the plants in the vegetation layer 10 of the artificial floating body greening ground 1000 do not wither and die while floating on the water surface.

When the water surface descends from the state shown in FIG. 6, the same operation is performed by the operation opposite to that described above, and the unit greening ground 100 is placed on the slope 80 of the ground. 4, even in the state of FIG. 5, in addition to the above operation, the bottom of the vegetation layer 10, that is, the upper surface of the water retention pad 21 is steadily fixed by the water retained in the unit water retention layer 20 when the water surface is at a high position. It can be kept in a wet state.

Since the position of the lake surface changes depending on the season and the like, when the artificial floating greenery ground 1000 is to be installed, the lake surface may be high. In this case, the artificial floating greenery ground 1000 must be installed. In this case, the artificial floating greenery ground 1000 can be used.
Is floated by pushing the other end directly toward the lake from the upper side of the slope 80, etc., and at the time when the whole floats on the lake, one end on the near side of the artificial floating greenery ground 1000 is fixed. The tool 81 is driven in and fixed at a predetermined position on the slope 80. As a modified example of the above-described embodiment, the following configuration can be made by changing the shape and material of each part.

Modification 1 In the above embodiment, the artificial floating greenery ground 1000 is provided by using a plurality of unit greening grounds 100 according to the area to be greened. However, the artificial floating greenery ground having one large area is formed, and It is also possible to carry out the greening according to the invention with artificial floating greening ground.

When a single artificial floating body greening ground formed in this way is used, the labor for binding the unit greening grounds 100 with a rope can be omitted, and the manufacturing cost can be reduced.

Modification 2 In the above embodiment, the vegetation layer 10
In the above, the lightweight artificial soil 11 and the seed-filled sack 12 are formed by using a bag made of the non-woven fabric 13, but the bag used may exhibit a capillary effect partially or entirely.

When the vegetation layer 10 is formed as described above, it is possible to expect the vegetation layer itself to have a better water suction effect.

Modification 3 In the above embodiment, the water retention pad 21
Has shown an example in which 18 column-shaped recesses are provided per unit water retention layer, but this may be a rectangular shape or more.

As described above, in the first embodiment of the present invention, the floating body layer 30 made of an integrally molded article of a closed-cell synthetic resin foam is used.
A unit water-retaining layer 20 having an outer peripheral frame-shaped portion and a concave portion at the bottom thereof, which is arranged in a rectangular shape on the floating body layer 30;
And a united green ground 100 formed by wrapping a green ground formed by a net 61 with a vegetation layer 10 which is a soil layer enclosing seeds, which is disposed on the unit water retaining layer 20, and a plurality of unit green grounds having a required area. It is arranged in a rectangular shape, and the upper side of the side of each unit greening ground 100 is tacked by the rope 60 to form an artificial floating greening ground 1000. Since the green ground is fixed at a position on the ground slope such that the green ground is mounted on the ground slope at the water surface position, the artificial floating green ground 1000 is used when the amount of water in the lake is large. As shown in FIG. 6, the floating body layer 30 floats on the water surface by the floating action, the vegetation layer 10 is constantly kept on the water surface, and the vegetation layer 10 is immersed in the water due to the fluctuation of the water level. By, or seeds outflow of vegetation layer, also can be eliminated that the plant itself their growth is inhibited by soaking in water.

Also, when the water level drops, as shown in FIGS. 4 and 5, the water is retained in each of the unit water retaining layers 20 which are divided into small pieces, and is further drawn from rainwater or the water supply sheet 40. Due to the water storage function of taking water flowing through the bedrock into the water retaining layer 20 during rainfall, water does not run out in a short period of time, and the plants in the upper layer can perform good growth of the vegetation layer 10 and good greening due to this. .

By such a floating action and a water retention action, the fluctuation of the water content of the vegetation layer 10 due to the fluctuation of the water level, and the withering of the vegetation layer due to the fluctuation can be suppressed, and the fluctuation of the water level of the dam lake can be suppressed. There is an effect that the greening zone can always be created on the water surface without being affected.

The following are conceivable as further claims of the present invention. [Claim 3] In the artificial floating body greening ground according to claim 2, the floating body layer and the water retaining layer have slit-shaped through holes provided in the floating body layer for each of the unit water retaining layers.
Alternatively, climb the side surface from the lower outer side of one side surface, cross the frame-shaped portion of the unit water-retaining layer, cross over the concave upper surface of the unit water-retaining layer bottom surface, and further climb the frame-shaped portion on the opposite side of the unit water-retaining layer. Beyond the frame-shaped portion, it descends along the outer surface of the side surface portion to the lower outer side of the side surface portion, and further passes through another slit-shaped through hole provided in the floating body layer or another side surface, and connects both ends of the floating body. A water supply sheet extending to the bottom of the layer is disposed, and the water supply sheet is disposed at a right angle with the rectangular unit water retention layer.
An artificial floating greenery ground characterized by being provided in one direction.

[0047]

According to the artificial floating body greening ground of the present invention, the floating body layer is composed of an integrally molded article of a closed-cell synthetic resin foam, and the molded article for storing water disposed on the floating body layer. A water retention layer and a greenery ground comprising a vegetation layer, which is a soil layer enclosing seeds, disposed on the water retention layer, and one end of the greenery ground rises above the water surface at an elevated water surface position. Since the greenery ground is fixed at a position on the slope of the ground where the greenery ground is mounted on the slope of the ground at the lowered water surface position, the following effects are obtained.

That is, when the water surface is high, the floating body floats on the water surface by the floating action of the floating body layer, the vegetation layer is constantly kept on the water surface, and the vegetation layer is immersed in the water due to the fluctuation of the water level. In addition, it is possible to prevent the seeds in the vegetation layer from flowing out and the plants themselves from being immersed in water so as not to be affected by the growth thereof. On the other hand, when the water level drops, water is retained in each unit water storage layer, and rainwater is stored in the water storage layer, or the water flowing on the rock during rainfall is sucked up by the water supply sheet to retain water. Intake in the formation and store water. As a result, water can always be stored in the water retaining layer, and the plants in the vegetation layer can be constantly supplied with water, and the vegetation layer can be favorably grown and maintained. For this reason, there is an effect that maintenance of greening over a long period of time by the greening ground can be achieved.

Further, according to the present invention, in the artificial floating body greening ground, the water retaining layer has a rectangular outer peripheral frame-shaped portion and a unit water retaining layer having a concave portion at the bottom thereof, and is provided on the floating body layer. In addition, since the plurality of units are arranged vertically and horizontally so as to form a rectangular shape as a whole, the unit water retaining layer can reliably retain water, and the entire artificial floating body greening ground can be provided. There is an effect that even and more water can be retained.

[Brief description of the drawings]

FIG. 1 is a perspective view of an artificial floating greenery ground 1000 according to a first embodiment of the present invention.

FIG. 2 is a perspective view (FIG. 2 (a)) of a unit greening ground 100 according to the first embodiment of the present invention, and a top view (FIG. 2 (b)) without the vegetation layer 10;

FIG. 3 is a sectional view showing the vegetation layer 10 of the first embodiment (FIG. 3A) and a side view of the unit greening ground 100 (FIG. 3B).
).

FIG. 4 is a sectional view showing a state in which the artificial floating greenery ground 1000 of the first embodiment is installed.

FIG. 5 is a sectional view showing a state where the artificial floating greenery ground 1000 of the first embodiment is installed.

FIG. 6 is a cross-sectional view showing a state where the artificial floating greenery ground 1000 of the first embodiment is installed.

FIG. 7 is a side view showing a conventional artificial floating greenery ground.

[Explanation of symbols]

10 vegetation layer, 11 lightweight artificial soil, 12 sandbag with seeds, 13 non-woven fabric, 20 unit water retention layer, 21 ESP
Water retention pad, 23 frame part, 30 floating layer, 31 slit, 40 water supply sheet, 60 connecting rope, 61 net, 62 nylon binding belt, 70 water, 80 slope, 81 fixture, 90 artificial floating greenery ground, 91 vegetation Layer, 92 middle layer, 93 floating layer, 94 bags, 95
Fixture, 100 units greening ground, 1000 artificial floating greening ground.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-268836 (JP, A) JP-A-4-26237 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 17/20 102 E02B 3/12

Claims (2)

(57) [Claims] 1. A floating body layer formed of an integrally molded article of a closed-cell synthetic resin foam, a water retaining layer formed of a molded article for storing water disposed on the floating body layer, and disposed on the water retaining layer. ,
A greenery ground comprising a vegetation layer, which is a soil layer containing seeds, wherein one end of the greenery ground rises above the water surface at an elevated water surface position, and the greenery ground falls at a lower surface of the water surface position. An artificial floating greenery ground fixed to a position on a slope of the ground so as to be mounted and mounted on a surface. 2. The artificial floating greenery ground according to claim 1, wherein each of the water retaining layers has a rectangular outer peripheral frame portion,
An artificial floating greenery ground comprising a plurality of unit water retention layers having a concave portion at the bottom thereof arranged on the floating body layer vertically and horizontally so as to form a rectangular shape as a whole.