JP3317484B2 - Vegetation net and greening method using the net - 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 net for protecting a slope and planting trees and introducing a specific plant such as a flower to the slope, and a tree planting method using the net.

[0002]

2. Description of the Related Art Conventionally, in the protection and revegetation work of a hillside formed by road construction, land reclamation, etc., various conditions are required depending on conditions such as soil quality and gradient of the slope or conditions required for aesthetics. Construction methods have been developed.

[0003] For example, the seed spraying method is used for the slope of the soil and the slope which is relatively suitable for greening, and the thick-layer soil spraying method or the lattice frame and the thick-layer soil are used for the rock slope or the steep slope. A combination of spraying methods is being implemented.

[0004] Many other slope protection greening materials and construction methods have been developed, but vegetation nets have become particularly popular in recent years. As a material for vegetation nets, the mainstream in recent years is made of corrosion-resistant fibers such as polypropylene and other synthetic fibers. there were.

As a feature of each of these, the one made of corrosive fiber is completely corroded and has no residue, but there is no one that retains the shape of the net.
The problem was that the effect of preventing the outflow of soil and rocks on the slope surface was significantly reduced. On the other hand, those formed of corrosion-resistant fibers are intended to compensate for the above-mentioned disadvantages, and to prevent the outflow and collapse of earth and sand by a net for a long time, to protect slopes, and to introduce vegetation. I have.

However, since the net is not corroded, the mesh is sparse and uniform, when the seeds such as grass are rapidly greened by spraying, the grass grows on the entire surface and the slope can be protected. , It is difficult to simultaneously introduce plants that are slower in growth than grasses, such as specific plants such as flowers and trees, and are easily subjected to pressure by other plants,
If it is forcibly performed, after planting the greening work, planting after work such as partially cutting grass growing on the slope surface, shaving off the surface soil, or cutting the net remaining on the surface It had to be done and required a lot of work.

[0007]

Therefore, the present inventors have conducted various studies on the texture and corrosivity of the vegetation net.
The inventors have found that the above-mentioned problems can be solved by using a net that is woven to such an extent that plant seeds and the like cannot be partially settled by corrosive fibers and cannot grow, thereby completing the present invention.

[0008]

That is, the structure of the present invention is a vegetation net in which the dense and dense portions are formed of fine denier corrosive fibers in a vegetation net which repeats the density at appropriate intervals in the longitudinal direction. Is densely woven to such an extent that plant invasion is not allowed, the weft constituting the sparse portion is composed of thick denier corrosive fibers, the interval between the sparse portions is 50 cm to 1 m, and the interval between the dense portions is 20 cm to 50 cm. It is a net for vegetation characterized by that, furthermore, after stretching this net for vegetation on the slope, seeds from the net, fertilizer, soil improving material,
This is a greening method characterized by spraying a vegetation base material containing one or more water retention materials.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a vegetation net according to the present invention.

As the corrosive fiber used in the net of the present invention, various types such as animal, vegetable, and chemical can be used. As the animal and vegetable fiber, leather, hair, cotton, hemp, pulp and the like can be used. A typical example is a natural fiber. As the chemical fiber, a polyolefin fiber or a biodegradable plastic which is easily corroded by a chemical can be used.

[0011] Chemically corrosive polyolefins are suitable for use in industrial production. In addition, flat yarns, which are generally called regenerated fibers, can be mentioned. In particular, viscose rayon can be manufactured in the same way as conventional corrosion-resistant fiber nets when manufacturing nets, and has excellent water absorption. Material that is effective for vegetation.

[0012] These can be used alone or mixed with different deniers or different fibers to adjust the corrosion time.
2,000 denier, preferably around 2,000 denier.

The method of knitting and weaving these to form a net will be described. The number of wefts inserted into warp yarns arranged at equal intervals in the horizontal direction is changed, and knitting is repeated so as to repeat density at appropriate intervals in the vertical direction. .

The pitch of the sparse portion is 50 cm to 1
m, at an interval of about 20 to 50 cm in a dense part, arbitrarily selected depending on the construction site and the type of plant to be introduced.

In particular, in the initial stage after construction, the vegetated portion has a spacing or area / area larger than or equal to the portion where vegetation does not grow, so that the entire slope can be protected by vegetation. At the same time, ensure that plants, trees, etc. to be introduced secondarily are introduced in a well-balanced manner.

For this purpose, the interval between the sparse portions should be 50 cm to 1
m. In this way, 5
If it is 0 cm or less, the growth width of the vegetation is small, and there is a possibility that surface erosion will occur on the entire slope, and 1 m
If it is above, the area for introducing plants, such as flowers and trees, to be introduced secondarily is relatively narrow, and the landscape effect of flowers, trees, etc. is not exhibited.

The reason why the interval between the dense portions is set to 20 cm to 50 cm is that if the unvegetated area is 20 cm or less in the initial stage of construction, the existing vegetation that has already been vegetated vigorously grows. The introduced plant is more likely to be under pressure, and if it is 50 cm or more, the width of the region that becomes corroded and bare after the construction is increased, which may cause erosion of the entire slope. In consideration of the above, the interval between the dense portions is 20 cm to 50 cm, and the interval between the sparse portions is 50 cm to
1 m.

The net (1) usually has a width of 1.5 to 2 m and a length of 10 to 30 m, and has reinforcing ropes (4) at both ends and a center.
And the package is rolled. In this embodiment, weaving is performed using corrosion-resistant fibers as warp yarns.

At this time, in the sparse portion (2), the yarn interval of both the warp and weft is not particularly limited as long as the plant can grow, but the corrosion time is delayed as compared with the dense portion (3). Use thick denier weft for this.

On the other hand, in the dense portion (3), it is necessary to drive the weft thread so densely that the plant cannot grow, and the number of threads varies depending on the thread width of the weft thread. 1 / inch for flat yarn of about 1,500 denier
Driving of 0 to 20 lines / inch is required.

The net formed as described above is stretched on the slope (7) as shown in FIG. 2, and from the net (1), grass seeds are used as seeds, and fertilizers and soil improving materials are additionally used. By spraying a vegetation base material containing one or more water retention materials, the greening method of the present invention is completed.

In the present invention, the net sparse part (2) in the initial stage of construction
The erosion on the slope is prevented by the grass (5) grown and raised. On the other hand, in the dense portion of the net (3), the grass seeds introduced by the spraying method or the like cannot grow due to the inability to germinate mainly by drying, and a portion without vegetation is formed on the slope in a contour shape. However, as the time elapses, the corrosive fiber portion of the net, that is, the dense portion is corroded and the ground surface is exposed, so that plants can grow.

Therefore, a plant that grows more slowly than the pasture (5) such as a flower (6) or a tree and is easily subjected to pressure by other plants is sown or planted in this portion.

[0024]

According to the present invention, in a vegetation net which repeats dense and dense at appropriate intervals in the vertical direction, the weft constituting the dense portion is composed of fine denier corrosive fiber, and the dense portion does not allow plants to enter. Weaving is so dense that the weft yarns constituting the sparse portion are made of thick denier corrosive fibers, and the interval between the sparse portions is 5
A vegetation net characterized in that 0 cm to 1 m, and the interval between dense portions is 20 cm to 50 cm. Further, after stretching the vegetation net on a slope, seeds, fertilizer, The revegetation method is characterized by spraying a vegetation base material containing at least one of a soil improvement material and a water retention material, and thus has the following effects.

That is, when the vegetation net of the present invention is stuck on a slope, for a certain period immediately after the construction, the dense portion of the net can suppress plants that show vigorous growth of grass and the like,
After that, the dense part is corroded, and the space for sowing or planting plants that are slow growing compared to pastures such as flowers and trees and are easily subject to pressure by other plants can be secured. The reliable introduction of flowers and trees to the slopes, which are susceptible to pressure by other plants, while ensuring surface protection without the need for special work such as cutting grass, cutting the soil, and cutting the net Seeding or planting can be easily performed, and labor can be greatly reduced.

In particular, in the early stage after construction, the vegetated portion has a spacing or area / size larger or equal to or larger than the portion where the vegetation does not grow, so that the entire slope can be protected by vegetation. At the same time, it is possible to ensure a reliable and well-balanced introduction of flowers, trees, etc. to be introduced secondarily.

[0027]

[Brief description of the drawings]

FIG. 1 is a front view of a vegetation net of the present invention.

FIG. 2 is a partial cross-sectional view showing a state where a net is stretched according to the present invention.

FIG. 3 is a partial cross-sectional view showing a greening state of a slope using the net of the present invention.

[Explanation of symbols]

(1) is a net, (2) is a sparse part, (3) is a dense part, (4)
Is a reinforcement rope, (5) is grass, (6) is a flower, and (7) is a slope.

Continuation of the front page (56) References JP-A-61-28619 (JP, A) JP-A-3-250120 (JP, A) JUN-SEI 45-19785 (JP, Y1) (58) Fields investigated (Int) .Cl. ⁷ , DB name) E02D 17/20

Claims (2)

(57) [Claims] Claims: 1. A vegetation net which repeats dense and dense at appropriate intervals in the longitudinal direction, wherein the weft constituting the dense portion is formed of corrosive fibers of fine denier, and the dense portion is dense enough to prevent plant invasion. The weft is knitted and the sparse part is thick denier
Made of corrosive fiber, and the interval of the sparse part is 50cm-1.
m. A vegetation net characterized in that the interval between the dense portions is 20 cm to 50 cm. 2. The vegetation net according to claim 1 is stretched on a slope, and a vegetation base material containing one or more of seeds, fertilizer, soil improvement material, and water retention material is sprayed on the net. And the greening method.