JP4936283B2 - Brushed vegetation net - Google Patents

Description

  The present invention provides a vegetation mat for applying a vegetation work to a cut slope so as to repair and green the cut slope, and to prevent erosion of the cut slope, and use of the vegetation mat It is about the method.

In order to improve the environment, contrivances have been made such as laying mats on the ground or arranging soil injection mats.
For example, Japanese Patent Application Laid-Open No. 2003-321841 “Slope Injecting Mat for Slope Vegetation and Sandbag for Vegetation” cited as Patent Document 1 is a combination of non-corrosive fibers and corrosive fibers with a special device. And
Japanese Patent Application Laid-Open No. 2004-76389 “vegetation net with a greening basic function” cited as Patent Document 2 has elongated bag bodies arranged in parallel.
Japanese Patent Laid-Open No. 2003-321841 JP 2004-76389 A

Recently, however, environmental specialists have pointed out that artificial greening may cause unexpected harm.
There are many cases where plant species with strong fertility are transplanted because they are enthusiastic about tree planting, but when introducing non-regional species (foreign species), native species (local species) that have settled in the region since ancient times The ecosystem has been destroyed, and the genes of native species have been disturbed.

  The present invention has been made in view of the circumstances described above, and the purpose thereof is “a natural species plant that has evolved according to the natural environment of the region on the established slope. It is to provide an instrument (vegetation net) and method for nurturing.

The basic principle of the present invention is to capture seeds flying in the natural environment, hold the seeds in contact with the ground so that they will not be washed away by rainwater or blown by wind, It promotes germination and rooting, and also prevents soil erosion due to wind and rain.
In addition, it is more effective if spraying of native seeds is performed together.

The brushed vegetation net according to the invention of claim 1 will be described as follows with reference to FIGS. 1 and 2 corresponding to one embodiment thereof. (In the description of [Means for Solving the Problems], reference numerals are added for easy comparison with the drawings, but the reference numerals do not limit the configuration of the present invention).
Consists of yarns (1) in the Y-axis direction that are knitted and arranged in the X-axis direction, and flat cords (2) that are alternately knitted on the yarns in the Y-axis direction that are adjacent to each other. For the base net (3) knitted with mesh,
Raised yarns (4a, 4b) are entangled with coarser meshes than the knitted basic mesh.

The structure of the brushed vegetation net according to the invention of claim 2 is:
(Refer to FIG. 4 (A)) 20 composed of a large number of yarns (1) or flat cords (2) arranged in parallel and a large number of yarns (1) or flat cords (2) substantially orthogonal thereto. For the basic mesh (7) of the square of mesh to 2 mesh,
The raised yarn (4) is entangled with the same mesh as the square mesh or with a mesh coarser than the square mesh.

The configuration of the brushed vegetation net according to the invention of claim 3 is in addition to the configuration requirements of the invention of claim 2,
(Refer to FIG. 5) In the above-mentioned basic net, the distance between the mutually parallel yarns or flat strings is not constant, and the densely spaced areas and the coarse areas are alternately or alternately, or a plurality of them. It is characterized by being arranged at intervals.

The structure of the brushed vegetation net according to the invention of claim 4 is:
(See FIG. 4 (B)) With respect to various types of basic nets (for example, hexagonal basic nets 8) braided by yarns and / or flat strings, the same mesh as the basic net or coarser than the basic net The raised yarn (4) is entangled with a mesh.

The configuration of the brushed vegetation net according to the invention of claim 5 is in addition to the constituent features of the invention according to any one of claims 1 to 4,
At least a part of the yarn and / or flat string constituting the foundation net is formed of a biodegradable material,
Alternatively, it is characterized by being blended with a biodegradable yarn.

The structure of the brushed vegetation net according to the invention of claim 6 is in addition to the constituent features of the invention according to any one of claims 1 to 5,
The raised yarn is hemp yarn, cotton yarn, or worsted yarn, synthetic resin yarn, or a blended yarn thereof.

A method for protecting slope greening according to the invention of claim 7 is as follows:
(See Fig. 3) Spraying the seeds of native species on the slope formed by earthwork,
Cover with the brushed vegetation net according to any one of claims 1 to 4,
Fixing a plurality of portions of the brushed vegetation net to the sloped soil by anchors (6);
Capturing seeds flying in the natural environment of the area at the raised portion of the raised yarn,
It is characterized by germinating and rooting seeds that have been sprayed and seeds that have come to fly.

If it leaves spread on the ground by applying brushed vegetation nets according to the invention of claim 1, when the wind spraying species seeds, wildlife spraying species seeds, gravity spraying species seeds, and automatic spraying species seeds were flying, The raised yarn that has undergone the raising process captures this.
The raised yarn mesh is relatively coarse and does not prevent the trapped seeds from touching the ground.
Since the mesh of the foundation net is relatively fine, it prevents the soil from being washed away by rainwater or blown away by wind. This action also indirectly prevents seed loss.
Since the foundation net is knitted and rich in elasticity, it can be familiar even if the land is asymmetric.

Even when the brushed vegetation net according to the invention of claim 2 or 4 is applied, the seed capturing action and the soil protecting action are achieved as in the invention of claim 1.
Compared to the structure of claim 1, since the foundation net is not knitted, it is difficult to adjust to the ground asymmetry, but it is sufficiently practical for flat land.
Since it is not knitted, it is easier to handle and less expensive to manufacture than the raised vegetation net of claim 1.

When the brushed vegetation net according to the invention of claim 3 is applied, a dense portion and a coarse portion of the mesh are formed, so that even a seed having a small external dimension can be captured, and a seed having a large external dimension is obtained. Can also be brought into contact with the ground. This makes it possible to grow a variety of vegetation and is effective in protecting the natural ecosystem.

The brushed vegetation net according to the invention of claim 4 is a modification of the brushed vegetation net according to claim 2, and the same effect as in claim 2 is obtained.
There are various types of knitting. The present invention can be applied to all types of basic networks, although there are advantages and disadvantages depending on the types.

When the brushed vegetation net according to the invention of claim 5 is applied, the biodegradation system portion disappears and the mesh becomes rough as a change over time due to exposure to wind and rain.
Due to the above changes, seeds are captured with a fine mesh at an early stage and the ground is protected, and a coarse mesh is formed at a later stage, so that the growth of germinated seeds is not restricted. Since the ground becomes stable in the later stage, it is possible to prevent runoff even with a coarse mesh.

  When the raised vegetation net according to the invention of claim 6 is applied, various raised yarns can be selected and used, so that appropriate raised yarns can be used according to the characteristics of the loom and the vegetation situation. For this reason, the degree of design freedom is large, and it can be adapted to all conditions.

  When applying the method for protecting planting of greenery according to the invention of claim 7, the germination growth rate of native plant seeds artificially sprayed and the germination growth rate of native plant seeds naturally flying are added, The success rate of tree planting is significantly improved.

1 and 2 show a first embodiment of a brushed vegetation net according to the present invention, FIG. 1 is a schematic plan view illustrating an enlarged part of an unfinished product being manufactured, and FIG. 2 is a finished product. It is the typical top view which expanded and drawn one part of.
(See FIG. 1) For convenience of explanation, orthogonal two axes X and Y are assumed. These coordinates are for convenience, and the X axis and Y axis can be interchanged.

Reference numeral 1 indicates a yarn. In the present invention, the term “yarn” means normal yarn excluding special yarn. In this embodiment, a synthetic resin yarn was used.
A large number of yarns 1 in the Y-axis direction that are knitted are arranged in the X-axis direction.
A flat string is indicated by reference numeral 2. In the present embodiment, a synthetic resin flat string is used.
A base net 3 knitted by knitting flat cords 2 alternately on two adjacent yarns 1 is formed.

The coarseness of the knitted basic mesh 3 is appropriately selected according to the size of the seed of the target plant.
However, natural vegetation to be cultivated by the present invention is composed of many kinds of plants, so it is difficult to determine them in general.
Based on the philosophy of natural greening to grow a variety of vegetation, it is desirable to have 20 mesh to 2 mesh.
The reason is that if the seed is finer than 20 mesh, even if a large seed is captured, the seed does not touch the ground, thus preventing germination and rooting, and if it is coarser than 2 mesh, a small seed is captured. This is because the probability is low.

The raised yarn 4 is entangled with the knitted knitted basic net 3 so as to be coarser than the mesh of the basic net. In the present invention, entanglement of the yarn means that the yarn is wound or knitted so as not to be easily separated.
At the stage of FIG. 1 depicting the production process, the raised yarn 4 is in an unraised state. For convenience of explanation, this is named raised yarn (unraised) 4a.

The operation of “raising” in the textile technology has been used for a long time, such as Rasha and Flannel, and has recently been widely used in fashionable clothing.
In the present invention, the raised yarn is basically “yarn made so as to be easily raised”, but is not necessarily required to be produced for the purpose of raising. Therefore, any yarn that can be raised may be used.
Raising is fluffing.
In the present invention, as the material constituting the raised yarn, hemp yarn, cotton yarn, worsted yarn, synthetic resin yarn, or a blended yarn thereof can be arbitrarily selected.
It is desirable to make a selection in comparison with price and characteristics such as ease of weaving, quality of fluff, durability, and resilience when wet.

When the raised yarn (unraised) 4a forming the semi-finished product shown in FIG. 1 is subjected to raising, a finished raised vegetation net 5 shown in FIG. 3 is obtained. The difference from the semi-finished product is that the raised fibers are spread in a mesh.

FIG. 3 is an external perspective view of a state in which the slope created by the earthwork work is covered with the brushed vegetation net 5.
In the present example, the seeds of the native plant were sprayed on the created bare land, and then the top was covered with the brushed vegetation net 5. As will be described in detail later, the application of native plant seeds is an auxiliary means, so it may not be performed very carefully and may be omitted.

The periphery of the brushed vegetation net 5 and other appropriate portions are fastened to the ground with the anchor 6.
If left untreated in this way, natural seeds will fly through various routes. The seeds of wind-spreading seeds (eg cocoons) are also blown away. The seeds of bird-spreading seeds that have fallen into the feces are also falling. Gravity scattered seeds also come. The seeds of automatic spraying seeds are also flying. For example, the seeds of vegetation that have grown and become familiar with the natural conditions of the region since ancient times fly by their functions and are captured by the raised yarn (raised) 4b of the raised vegetation net 5.

(See FIG. 3 and FIG. 2 together.) Since the mesh of the raised yarn (raised) 4b is relatively coarse, the trapped seeds are not prevented from contacting the soil.
The seeds of native seed plants and seeds that have been sprayed in advance are moistened by rainwater, receive moisture from the ground, and germinate in response to sunlight. Since the mesh of the knitted knitted basic net 3 is 20 or more, the rooting is not prevented from extending into the ground.

Since the mesh of the knitted basic net 3 is finer than 2 mesh, the basic net 3 covers the ground and prevents the soil from being washed away by wind and rain.
When the germinated seeds root in the soil, the protection of the soil becomes more complete.
In this way, vegetation suitable for the area grows and the natural ecosystem is protected. Not just growing greenery. The place where the ancient native species is protected and nurtured has the sublime significance of the present invention.

FIG. 4A shows a second embodiment. A square foundation net 7 is constituted by the yarn 1 and / or the flat string 2. The mesh is 20-2.
The raised yarn 4 is entangled with the basic net.
In the example of FIG. 4A, the mesh of the square basic mesh 7 and the mesh of the raised yarn 4 are configured to have the same roughness. However, as an embodiment different from this, the mesh interval of the raised yarn 4 is set to the basic mesh. It may be twice or more than the mesh interval of 7.

5 (A) and 5 (B) are modifications of the second embodiment shown in FIG. 4 (A). The roughness of the vertical and horizontal meshes is not constant.
Close-mesh spots and coarse spots are alternately arranged.
Such a modified example (FIG. 5) also has the same basic effect as a brushed vegetation net, but is different from the second example (FIG. 4 (A)). Use it properly (select a user-friendly item).

FIG. 4B shows a third embodiment. Compared to the square shape in the second embodiment (FIG. 4A), this example is a hexagon. Even if configured in this way, the function as a brushed vegetation net is the same as in the second embodiment (square), but the physical properties are different and isotropic, so that it covers the flat ground. Is suitable.

Considering the material of the yarn, the flat string, and the raised yarn in the embodiment described above (first to third examples) by classifying them into biodegradable materials and non-degradable materials. Is also beneficial.
Brushed vegetation nets composed of biodegradable materials are decomposed and disappeared by microorganisms (bacteria) in the natural environment, leaving no artificial traces against nature.
Even in the case of biodegradable materials, the speed at which decomposition proceeds in the natural environment is slow.
If the decomposition is too fast, the purpose of holding and growing seeds may not be achieved until the end, which is not preferable.
From these considerations, it is also an option to use a yarn obtained by blending a biodegradable material and an undegradable material.

As can be easily understood from the operation and effects in the various embodiments described above, the type of the basic mesh is not an absolute condition for achieving the object of the present invention, but “the raised yarn is entangled with the basic mesh. It is the essence of the present invention.
Strictly speaking, weaving is different from weaving. However, in the present invention, the “basic mesh” is a general term for the mesh member of the other party to which the raised yarn is entangled regardless of whether it is knitted or woven.

It is a typical partial enlarged plan view showing the semi-finished product of the 1st example of the raising vegetation net concerning the present invention. It is a typical partial enlarged plan view showing the finished product of the 1st example of the raising vegetation net concerning the present invention. It is a typical perspective view of the state which covered the ground with the raising yarn 4 concerning the present invention, and was fixed with an anchor. An embodiment different from the above is shown, (A) is a schematic partial enlarged plan view of the second embodiment in which the mesh is a quadrangle, and (B) is a schematic of the third embodiment in which the mesh is a hexagon. It is a partial enlarged plan view. FIG. 6 is a schematic partially enlarged plan view of a modification of the second embodiment shown in FIG. 4A.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Yarn 2 ... Flat string 3 ... Knitted basic mesh 4 ... Raised yarn 4a ... Unraised raised yarn 4b ... Raised processed raised yarn 5 ... Raised vegetation net 6 ... Anchor 7 ... Square mesh basic net 8 ... Hexagon Eye basic network 9 ... irregular shaped basic network

Claims (6)

It consists of yarns in the Y-axis direction that are knitted and arranged in the X-axis direction, and flat cords that are alternately knitted on adjacent Y-axis direction yarns, and knitted with 20 mesh to 2 mesh. For the basic network,
A brushed vegetation net, wherein the raised yarn is entangled with a coarser mesh than the knitted knitted basic mesh to open the center and the dense mesh of the basic mesh is disposed in the opening . For a square base network of a 20 mesh to 2 mesh square consisting of a large number of yarns or flat strings arranged in parallel and a large number of yarns or flat strings substantially perpendicular to the same,
The raised mesh is entangled with the same mesh as the square mesh and the center is opened to form a mesh , or the raised yarn is entangled with a coarser mesh than the square mesh and the center is opened and the opening is Brushed vegetation net, characterized in that the dense mesh of the foundation net is arranged . In the basic mesh, the interval between yarns or flat cords parallel to each other is not constant, and the densely spaced portions and the coarse portions are arranged alternately, one by one, or every other. The brushed vegetation net according to claim 2, wherein For hexagonal mesh foundation braided with yarns and / or flat strings,
Or for basic meshes with meshes other than knitting, squares, hexagons,
The raised mesh is entangled with the same mesh as these basic meshes to open the center to form a mesh , or the coarser mesh is entangled with the raised yarn to open the center, and the mesh of the basic mesh is close to the opening. Brushed vegetation net, characterized by the arrangement of At least a part of the yarn and / or flat string constituting the foundation net is formed of a biodegradable material,
The brushed vegetation net according to any one of claims 1 to 4, wherein the brushed vegetation net is blended with a biodegradable yarn. The raised vegetation net according to any one of claims 1 to 5, wherein the raised yarn is hemp yarn, cotton yarn, worsted yarn, synthetic resin yarn, or a blended yarn thereof.

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