JP2676137B2 - Vegetation mat for steep embankment method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetation mat suitable for use in a steep slope embankment method, and more particularly to a vegetation mat capable of assuring germination and growth of seeds.

[0002]

2. Description of the Related Art In the conventional steep slope embankment method generally used, as shown in FIG. 2, a vegetation mat is placed on the inside of a support frame 20 having a steep slope, and then the embankment is performed. ,
By repeating this process, the embankment having a steep front surface as shown in FIG. 3 is formed.

That is, first, a support base 23 connected to the first-stage support frame 20 is placed at the construction site, and the support base 2
The support frame 20 is supported in a steep slope state by using the support columns 21 for the structure 3. Then, this support frame 20
The vegetation mat and the net 22 are arranged on the front side of the to secure a storage area for the embankment, and the embankment is placed in the storage area and leveled. By doing so, the vegetation mat whose front surface is protected by the net 22 is securely held by the support frame 20, and this vegetation mat is exposed from the mesh of the net 22 to the front side of the embankment. is there. Then, by repeating the above-mentioned steps a plurality of times, a steep embankment as shown in FIG. 3 is completed. Such a steep slope embankment method is used when forming land on both sides of a road in a mountainous area or on a slope with a limited area, and it aims to effectively use the land and reduce the number of construction sites. Is to do.

By the way, the vegetation mat used in such a conventional steep embankment method has its surface base material formed in a mesh shape using palm shell fibers as a material, and has a seed support on its back surface side. The seeds are simply supported by the sheet. And, in order to prevent the leakage of the embankment steeply, this conventional vegetation mat has a surface material with very "grains", that is, the mesh is very clogged. 24
It is formed so as to be 0 g / m ² or more. Moreover, in this conventional vegetation mat, in order to facilitate the construction work and prevent leakage of the embankment, only the surface base material is formed as a so-called "stiff" surface. The material is constructed as a relatively thick material.

Therefore, the conventionally used vegetation mat is not suitable for "vegetation" because of the following reasons. In other words, in the conventional vegetation mat, since the above-mentioned surface base material located on the surface side is thick with "eyes" as described above, sprouted sprouts obstruct its growth by this surface base material. It was not possible to get out of the front of the vegetation mat. In other words, the vegetation mat that has been used in the past has a problem of preventing the leakage of the steep sloped embankment by the surface base material, but rather hinders the growth of vegetation plants.

In particular, if the vegetation plant is a monocotyledon represented by Western lawn grass, since the first bud is one and has a sharp tip, the surface group with the above-mentioned "eyes" is included. Even if it was wood, it did not cause such a problem, but when the dicotyledonous plant whose first bud was a difoliate is a vegetation plant, its growth is greatly increased by the surface substrate as described above. This is a serious problem in recent years, when it is desired to adopt dicotyledonous woody plants and legumes as vegetation plants.

[0007] Therefore, the inventors of the present invention have made earnest studies as to how to make a vegetation mat for this type of steep embankment method capable of solving the above problems. The present inventors have completed the present invention by realizing that it is possible to prevent the leakage of the embankment and to maintain the vegetation plants separately.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and the problem to be solved is to provide a vegetation mat suitable for use in a steep slope embankment method. Is. That is, the purpose of the present invention is to be able to sufficiently promote the germination and growth of vegetation plants, it is possible to reliably prevent the leakage of the embankment, further in the workability for steep embankment method The object is to provide a vegetation mat that can be made excellent by a simple structure.

[0009]

In order to solve the above problems BRIEF SUMMARY OF THE INVENTION, means of adopting the present onset Ming is explained with reference numeral used in the examples, the "steep slope A vegetation mat 10 used in a steep slope embankment method in which a vegetation mat is supported on a support frame before embankment is performed, and this step is repeated to make the front surface of the embankment steep.
The net body 2 in which the vegetation mat 10 is supported by the support frame 20
2, a front surface base material 11 located immediately inside, a seed support sheet 12 integrated with the back surface side of the front surface base material 11 while holding seeds 13 and the like, and a further back surface side of the seed support sheet 12. And an earth retaining sheet 14 that is integrated to prevent leakage of the embankment to the front side , and
The base material 11 is made of palm shell fiber and has a mesh shape.
And the basis weight is 100 to 230 g /
a vegetation mat 10 ", characterized by being configured as an m ^2.

[0010]

To describe the operation of the vegetation mat 10 of the present invention constituted as described above [the action of the present invention, the vegetation mat 10
Is used in the steep embankment method in the same manner as the conventional vegetation mat described above. That is, as shown in FIG. 2, after placing the vegetation mat 10 according to the present invention inside the support frame 20 having a steep slope, embankment is performed, and by repeating this step, as shown in FIG. The front is a steep embankment. That is, first, the support frame 2 of the first stage
By arranging the support base 23 connected to 0 at the construction site and utilizing the support column 21 for the support base 23, the support frame 20 is supported in a steep slope state, and the front side of the support frame 20 is supported. The vegetation mat 10 and the net 22 are arranged in the space to secure a storage area for the embankment, and the embankment is put into the storage area for leveling.

Of course, in order to hold the vegetation mat 10 on the support frame 20, a certain degree of "strength of the waist" is required for the construction, but the waist strength of the vegetation mat 10 is required. Since the surface base material 11, the seed support sheet 12, and the soil retaining sheet 14 are sufficiently secured, the vegetation mat 10 can be easily handled and the construction can be easily performed. During the handling of the vegetation mat 10, the seeds 13 are firmly attached to the seed support sheet 12 or the surface thereof is covered with a thin paper or the like that does not affect the growth of buds of the vegetation plant. The seeds 13 and the like will not spill.

In particular, like the vegetation mat 10 according to the present invention , the surface base material 11 is formed in a mesh shape using coconut shell fibers as a material, and its basis weight is 100 to 2
When configured as a 30 g / m ^2, the surface
This means that the stiffness of the base material 11 is greatly reduced, which facilitates the "bending" work as shown in FIG.

As described above, the vegetation mat 10 whose front surface is protected by the net 22 supports the support frame 20.
The vegetation mat 10 is reliably held by the vegetation mat 10 and is exposed from the mesh of the mesh 22 to the front side of the embankment. Then, by repeating the above-mentioned steps a plurality of times, a steep embankment as shown in FIG. 3 is completed.

Now, considering each vegetation mat 10 after construction, since the soil retaining sheet 14 for preventing the leakage is present on the embankment side of the vegetation mat 10, the soil retaining sheet 14 causes rain. The leakage of the embankment containing water, etc. will be reliably prevented. Since the soil retaining sheet 14 plays the role of preventing the leakage of the embankment, the surface base material 11 is free to fulfill the role. In other words, the surface base material 11, which does not have to fulfill the role of preventing leakage of the embankment, has a small thickness.

As described above, the fact that the surface base material 11 is thin means that many holes are formed in the surface base material 11 so that the buds when the seeds 13 or the like germinate can be exposed to the front. It also means that. In particular, as in the vegetation mat 10 of the present invention, if the surface substrate 11, and forming as mesh coconut shell fiber as the material, the basis weight is constructed as a 100~230g / m ² The buds can be brought to the front
Large Kinaana it become that is often formed. Therefore, from the front of these vegetation mats 10, seeds 1
Many buds of 3 will come out, and vegetation will be sufficient for the steep embankment.

On the other hand, looking at the roots of vegetation plants,
Since the seed support sheet 12 is made of a material which is easily corroded and the soil retaining sheet 14 is formed in a mesh shape so that the root can be easily passed, it can be sufficiently stretched in the embankment. Therefore, in the steep slope embankment method using this vegetation mat 10, the growth of vegetation plants is sufficient, and the vegetation plants grow on the surface of the steep slope embankment.

Of course, the vegetation mat 10 is not only easy to manufacture per se, but also easy to handle, because all the constituent members thereof are sheet-shaped. .

[0018]

EXAMPLES Next, will be described in accordance with the embodiment shown this onset bright to the drawings as follows.

FIG. 1 shows a perspective view of a vegetation mat 10 according to the present invention. The vegetation mat 10 has a seed support sheet 12 to which a surface base material 11 and seeds 13 are sequentially attached from the front side. , And the soil retaining sheet 14, which are integrated with each other. In other words, the vegetation mat 10 is in the form of a sheet, both of its material and finished product.

The surface base material 11 is to be located on the surface side of the embankment, and is generally a sheet-shaped material made of natural fibers which are easily corroded in the embankment. In this embodiment, the surface base material 11 is formed as a net-like material using coconut shell fibers and has a basis weight of 1
It is configured to have a thickness of 0 to 230 g / m ² and a thickness of 1 to 3 mm. The reason is that if the basis weight of the surface base material 11 is smaller than 100 g / m ² , good workability is achieved. This is because it is not possible to secure sufficient "strength of the waist". On the other hand, the basis weight of the surface base material 11 is 230 g.
This is because if it is larger than / m ² , not only will the waist strength be unnecessarily high, but it will also hinder the emergence of germinated buds.

The seed support sheet 12 includes seeds 13
Any material may be used as long as it is easily attached and corrodes so as not to hinder the growth of roots after construction. In this embodiment, paper is used. In addition, seeds 13 for the seed support sheet 12
Although various methods can be applied as a method for attaching the seeds, seeds 13 and the like can be sandwiched in a seed support sheet 12 made of double thin paper as in this example, or a strong adhesive can be used. The seeds 13 may be adhered to the surface side of the seed support sheet 12 for implementation.

As the seeds 13 and the like to be attached to the seed support sheet 12, various kinds can be applied as well as the general vegetation plant grass, but in this embodiment,
It uses seeds of trees and legumes and fertilizers suitable for germination and growth. In this way, woody plants and legumes are selected as the vegetation plants because it is desired that the vegetation can be performed for a long period of time and the vegetation of the embankment is performed by such types of plants. .

As the soil retaining sheet 14 of this embodiment, a mesh-shaped sheet made of synthetic resin is used. The mesh is to prevent leakage of the embankment and to prevent the roots from being stretched into the embankment, so the mesh should be appropriately selected in consideration of this. It ’s good. Of course, the soil retaining sheet 14 may be formed using a material different from synthetic resin such as a metal wire.

The soil retaining sheet 14 in this embodiment is used.
Is a mesh, and the seed support sheet 12 on the side where it is integrated is paper, so various integration of the soil retaining sheet 14 and the seed support sheet 12 can be considered. For example, the soil retaining sheet 14 may be directly adhered to the back surface side of the seed supporting sheet 12 by using a powdery adhesive or the like, or as shown in FIG. An adhesive sheet 15 made of a water-soluble material such as polyvinyl alcohol may be placed between the two, and the soil retaining sheet 14 may be integrated with the seed support sheet 12 by the adhesive sheet 15. Is.

[0025]

Effect of the Invention] above, as detailed in this onset bright, as exemplified in the above embodiment performs embankment from support vegetation mat support frame serving as a "steep slope, this A vegetation mat 10 used in a steep embankment method in which the front surface of the embankment is made steep by repeating the steps, and the vegetation mat 10 is located immediately inside a net 22 supported by a support frame 20. And a seed support sheet 12 integrated with the back surface side of the surface base material 11 while holding seeds 13 and the like, and this seed support sheet 12
And an earth retaining sheet 14 that is integrated on the back side to prevent the embankment from leaking to the front side , and
A surface-shaped base material 11 made of coconut shell fiber as a mesh
And the basis weight is 100 to 230
It is characterized in that it is configured to be g / m ² ”, which can sufficiently promote the germination and growth of vegetation plants, reliably prevent the leakage of the embankment, and further increase the steep slope. It is possible to provide a vegetation mat which has excellent workability as a material for the embankment method and has a simple structure.

Particularly, according to the present invention, the surface base material 11 of the vegetation mat 10 is formed in a mesh shape using coconut shell fibers as a material, and the basis weight is 100 to 230 g.
Characterized by being configured to be / m ²
Since Demoa Ru, more, and can prompt enough germination and growth of vegetation plant, the embankment leakage can be reliably prevented, excellent further in workability as those for steep embankment method It can be.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a vegetation mat according to the present invention.

FIG. 2 is a side view showing a state in which the vegetation mat is arranged inside a support frame to perform a steep slope embankment method.

FIG. 3 is a perspective view showing a state of embankment in which a steep slope embankment method has been completed.

[Explanation of symbols]

 10 Vegetation mat 11 Surface base material 12 Seed support sheet 13 Seeds, etc. 14 Soil retaining sheet 15 Adhesive sheet

Claims (1)

(57) [Claims] 1. A vegetation used in a steep slope embankment method in which a vegetation mat is supported on a support frame having a steep slope and then embankment is performed, and the front of the embankment is made steep by repeating this process. The mat 10 is a net body 2 in which the vegetation mat 10 is supported by a support frame 20.
2, a front surface base material 11 located immediately inside, a seed support sheet 12 integrated with the back surface side of the front surface base material 11 while holding seeds 13 and the like, and a further back surface side of the seed support sheet 12. It is constituted by an earth retaining sheet 14 which is integrated to prevent leakage of the embankment to the front side , and the surface base material 11 is made of coconut shell fiber as a material in a mesh shape.
And the basis weight is 100-
Characterized in that it is configured to be 230 g / m ^2.
Vegetation to the mat 10.