JP2865175B2 - Slope revegetation method and cross-linked structure particles used for it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope revegetation method for growing and stabilizing a plant on a slope (slope). More specifically, the present invention relates to a slope greening method in which a seed of a plant and a material for growing the plant are used as a composition, and these are mixed with water and sprayed onto a slope.

[0002]

2. Description of the Related Art Various techniques for spraying a greening base material on a slope are known. For example, Japanese Patent Application Laid-Open No. 2-4742 by the present applicant.
No. 7 also discloses a technique in which a material for a growth base is mixed and stirred with water by a so-called batch method, and sprayed from a nozzle onto a slope with high-pressure air.

[0003]

However, in the conventional greening method, the greening base material or the material for the growth base (growth base material) is separated depending on the type of the composition, so that the greening slope or the greening work that has been performed is performed. There is a problem that the quality of the growth base varies.

[0004] During the transportation of these materials, there is a tendency that a composition material having a low specific gravity precedes and a heavy material or a material having high viscosity is delayed. Therefore, a layer of a heavy material or a highly viscous material is formed on the constructed greening slope or the surface of the growth base, and the surface becomes too hard, which causes poor germination or poor growth of plants.

Further, a large amount of dust is generated during the spraying operation. During transportation, hoses and tubes are blocked. As a result, the work environment where the conventional slope revegetation method is constructed tends to deteriorate the work environment.

In addition, in order to prevent the sprayed growth base material from rebounding or rebounding, it is necessary in the prior art to perform spraying from a direction perpendicular to the slope to be constructed. If the spray direction is deviated, it becomes difficult to adhere the material satisfactorily, and there is a problem that the loss of the material increases. In addition, cavities are formed in the sprayed material, which causes problems such as drying damage and outflow of the growth base due to groundwater or the like.

[0007] There is also a problem that the growth base shrinks due to drying after the spraying operation is completed, so that germination failure and root penetration are difficult.

The present invention has been proposed in view of the above-mentioned problems of the prior art, and has as its object to provide a slope greening method capable of solving the problems.

[0009]

The slope revegetation method of the present invention comprises a composition comprising plant seeds and a material for growing the plant, which are mixed with water and sprayed on the slope. The greening method is characterized in that a crosslinked structure particle formed by connecting granules made of aggregate with a fibrous material is added to the material for the growth base.

[0010] The crosslinked structure particles of the present invention are used in a slope greening method in which a plant seed and a material for growing the plant are mixed with water and sprayed on a slope, and a granular material comprising an aggregate is used. And a fibrous material connecting the granules as a composition.

Here, the granular material composed of the above-mentioned aggregate includes natural minerals (zeolites, sepiolites, bentonites), calcined rocks (pearlite, vermiculite), animal and plant materials (shell fossils, peat, grass lime), clay minerals (kaolinite, Montmorinite), Kanuma soil, Otani stone powder, sludge, charcoal, diatomaceous earth, gypsum, bone powder, oily scum, starch, cement, carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA), etc. It is preferable to select the composition appropriately. As the fibrous material, it is preferable to use synthetic fibers such as nylon, natural fibers such as coconut hulls, and semi-synthetic fibers such as rayon. It should be noted that the enumeration is merely an example and is not intended to limit the invention.

In practicing the present invention, the shape of the granular material is preferably a round shape, a lens shape, a pillow shape, an almond shape, or the like. It is preferable that the round-shaped granules are manufactured by a marmellaizer (granulator), and the lens-shaped, pillow-shaped and almond-shaped granules are manufactured by a briquetting machine (molding machine).

Further, when the present invention is introduced into a conventional spraying method, a material for a growth base having further improved erosion resistance can be obtained.

[0014] Further, a crosslinked structure particle body in which a granular material made of aggregate is connected to a surface to be worked with a fibrous material in advance,
That is, it is also possible to spray or lay the composition having a cross-linked structure, and then to perform the soil treatment.

[0015]

According to the present invention having the above-described structure, a crosslinked structure particle formed by connecting granules made of aggregate with a fibrous material is used as a composition having a crosslinked structure in a material for a growth base. , So that the mixed and stirred materials do not separate. Therefore, construction can be performed at a constant speed irrespective of the type of the composition of the growth base material, and variations in quality can be reduced.

Further, even if a composition material having a low specific gravity precedes during transportation, a heavy material or a highly viscous material is extruded together with the light material by the composition having a cross-linked structure, and is separated as in the prior art. There is nothing. In this connection, the formation of a layer composed of a heavy material or a highly viscous material near the surface of the constructed greening slope is also prevented, so that there is no problem of poor germination or poor growth.

The composition having a crosslinked structure extrudes other materials or compositions, thereby preventing generation of dust and blockage of hoses and tubes, thereby improving the working environment.

Further, since the structure is such that the granular material is connected by the fibrous material, the granular material does not adhere well to the slope and does not fall off. Therefore, when repelled, the rebound is small, and adheres well irrespective of the angle of spraying, thereby preventing waste of the material. And because it adheres well to the slope,
The degree of erosion is reduced, and spraying work during rainfall becomes possible. In this connection, a wire net or a net is not required.
This is because the fibrous materials in the cross-linked structure are entangled and act as a wire net or net.

In addition, the composition having a crosslinked structure eliminates the formation of a cavity in the sprayed growth base material. Therefore, neither growth damage nor runoff of the growth base due to groundwater occurs. Then, a skeleton is formed by the composition having a crosslinked structure throughout the material for the growth base, and the phenomenon of shrinkage is reduced.

In the present invention, the soil amendment, fertilizer, etc. are solidified as a composition of granular material composed of aggregate, so that the soil amendment, fertilizer, etc. are less likely to weather, and the soil amendment, fertilizer, etc. are less likely to be weathered than conventional ones. The effect lasts longer.

Furthermore, even if the density of the growth base is increased by using a highly viscous material, since the flow of air and water is ensured along the fibrous material, the mixing amount of the fibrous material increases. However, the growth of the plant is not inhibited. In that respect, it is clearly different from the prior art in which reinforcing fibers are mixed to improve the erosion resistance of the base.

In addition, woody plants having a low germination and growth rate can be introduced with confidence. In addition, since the hardening of the base is prevented, not only the seeds are sprayed but also the plant growing environment by cuttings is improved.

[0023]

Embodiments of the present invention will be described below.

FIG. 2 shows a spraying system for carrying out the present invention. The material M is conveyed on the belt conveyor 1, weighed by the measuring device 2, and further conveyed to the spraying machine 4 on the belt conveyor 3. In the spraying machine 4, the water is mixed with water conveyed by a pump 5. Then, the mixture is blown onto the slope S of the ground G through the material hose 7 and the nozzle 8 by the high-pressure air from the compressor 6. The sprayed growth base material or growth base material is indicated by reference numeral 10 in the figure.

The composition of the growth substrate material 10 is shown in FIG. Although not explicitly shown, the growth substrate material 10 includes, as its composition, plant seeds and other materials such as fertilizers. And the granular material 1 made of aggregate
2 are connected by a fibrous material 14 to form a crosslinked structure particle or a composition having a crosslinked structure.

In FIG. 1, the granular material 12 is round,
It is not limited to this. As shown in FIG. 3, it is possible to use lens-shaped granules 12-a, pillow-shaped granules 12-b, and almond-shaped granules 12-c. Further, as is clear from FIG. 1, the sizes of the granular materials 12 do not necessarily have to be the same.

The granular material 12 (12-a, 12-b, 12-
The molding step c) is shown in FIGS.
As the pretreatment, artificial soil, a consolidated material, a reinforcing material, a fibrous material, and the like are sequentially charged into a stirrer (not shown), and stirred for about 10 minutes while adding necessary moisture. The material M1 (FIG. 4) that has been subjected to such a pretreatment is fed into the hopper 26 of the molding machine 24 by the belt conveyor 22. The molding machine 24 is shown in detail in FIG. 5, and the granular material 12 (12-a, 12-a
-B, 12-c), rollers 30 having concave portions 28... Corresponding to the shapes are arranged to face each other. The pre-processed material M1 enters the concave portion 28 and is compressed into the granular material 12 connected by the fibrous material 14. Its dimensions are
In the case of the pillow type granular material 12-b (FIG. 3), for example, 1
3 x 13 x 8 (mm), 25 x 30 x 15 (mm), 3
It is 5 × 35 × 20 (mm). Then, as shown in FIG. 4, it is accommodated in the container 34 by the belt conveyor 32.

Next, the composition of the granular material 12 and the compounding ratio thereof will be described.

The composition of the granular material 12 is appropriately selected from charcoal, zeolite, bentonite, gypsum, diatomaceous earth, bone meal and oily residue, cement, carboxymethyl cellulose, and polyvinyl alcohol. here,
Charcoal provides a breeding ground for beneficial microorganisms (symbiotic microorganisms, nitrogen-fixing bacteria, nitrifying bacteria, etc.). And there is an effect of adsorbing a bad smell. Gypsum serves as a caking material or reinforcing material, and also functions as a soil improving material because the pH is not made too high. Cement and carboxymethylcellulose are also used as solidifying or reinforcing materials.

As to the composition, for example, there are the following composition examples. In addition, in the following formulation examples, the numbers indicate% by weight.

Formulation Example 1: Zeolite 60, gypsum 3
0, charcoal ... 10.

Formulation Example 2: Zeolite 80, gypsum 1
0, charcoal ... 10.

Formulation Example 3: Zeolite: 65, bentonite: 25, charcoal: 10

Formulation Example 4: Zeolite 89, polymer agent ...
1, charcoal ... 10.

(The bentonite of Formulation Example 3 is a naturally occurring charged clay. The polymer agent of Formulation Example 4 is carboxymethyl cellulose.) The artificial soil described with reference to FIGS. It is a mixture of zeolite and charcoal.

As the fibrous material, nylon, fishing line, straw, palm, bamboo or the like is used as described above. Its length is 3-1
About 0 cm is good. However, when it is desired to increase the overall length of the composition having a crosslinked structure, or when the composition having a crosslinked structure is further assembled, 10 to 30 cm
Something is good.

The amount of the fibrous material to be added in the step of molding the granular material is 0.3 to 0.5% by weight for nylon yarn, 1.5 to 3.0% by weight for palm fiber, and 1 to 1% for straw. .
About 0 to 2.0% by weight is good.

Next, the composition of the growth base material will be described. In the Tables 1 to 3 below, and each illustrate a formulation per 1 m ^3.

Table 1 below shows an example of the organic growth base material.

[0040]

Here, the crosslinked structure particle means a crosslinked structure particle or a composition formed by connecting granular materials 12 made of aggregate with a fibrous material 14. And 5 of the formulation
% To 40% is the ratio to the growth base material. here,
At sites where there is a lot of spring water, the content of the crosslinked structure particles is increased, and at sites where there is little spring water, the content of the crosslinked structure particles is reduced.

Table 2 shows inorganic and organic growth base materials.

[0043]

5% to 40% in the composition of the crosslinked particles
% Is the ratio to sandy soil.

Table 3 shows the composition of the rock wool growth base material.

[0046]

10% to 6 in the composition of the crosslinked particles
0% is the ratio to rock wool. Here, when the blending amount of the crosslinked structure particles is 60% or more, the absolute amount of a composition material such as a fertilizer that contributes to the growth of the plant is insufficient, and the growth of the plant is deteriorated.

The seeds of the plant to be mixed with the growth base material are preferably herbaceous plants such as Japanese pampas grass, Kentucky 31 fescue, Kentucky bluegrass and the like, and preferable woody plants are Itachihagi, Yamahagi and Medhagi. The plant to be finally established on the slope is a woody plant, but the woody plant grows slowly and requires a long time to take root in the growth base material. In the meantime, in order to prevent the sprayed growth base material from flowing out due to rainfall or the like, seeds of herbaceous plants having a high growth rate are mixed.

[0049]

The effects of the present invention are listed below.

(1) Since the composition having a crosslinked structure is contained in the growth base material, the mixed and stirred growth base material does not separate.

(2) The construction can be performed at a constant speed regardless of the type of the composition of the growth base material.

(3) Variations in construction quality are reduced.

(4) The formation of a layer composed of a heavy material or a highly viscous material near the surface of the constructed greening slope is prevented, and problems such as poor germination and poor growth do not occur.

(5) Generation of dust and blockage of hoses and tubes are prevented, and the working environment is improved.

(6) It does not adhere to the slope and fall off.

(7) There is little rebound at the time of spraying, waste of material is prevented, and a good spraying operation is performed regardless of the spraying angle.

(8) A spraying operation during rainfall is also possible.

(9) No wire net or net is required.

(10) No cavity is formed in the sprayed growth base material. As a result, no growth damage occurs due to drying damage and groundwater.

(11) The phenomenon of shrinkage is reduced.

(12) Compared with the conventional one, the effect of the soil conditioner and the fertilizer is kept for a longer time.

(13) Even if the amount of the fibrous material is increased, the growth of the plant is not inhibited.

(14) Woody plants having a slow growth rate can be introduced with confidence.

(15) The plant growing environment is also improved by cuttings.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a growth base of a greening slope constructed according to the present invention.

FIG. 2 is a view showing a mode of a spraying operation of a material for a growth base.

FIG. 3 is a view showing various shapes of a granular material.

FIG. 4 is a view showing a step of molding a granular material.

FIG. 5 is a partially enlarged view of FIG. 4;

[Explanation of symbols]

 Reference Signs List 10: Growth substrate material 12, 12a, 12b, 12c: Granular material 14: Fibrous material G: Ground mountain S: Slope

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tomiharu Yamamoto 8-14-14 Ginza, Chuo-ku, Tokyo Nittoku Construction Co., Ltd. (56) References JP 50-120102 (JP, A) JP Hei 4-153414 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) E02D 17/20 102

Claims (2)

(57) [Claims] 1. A slope greening method in which a plant seed and a material for a growth base of the plant are mixed as a composition, and the mixture is mixed with water and sprayed on a slope, and a granular material comprising an aggregate is converted into a fibrous material. A method for revegetation on a slope, wherein a crosslinked particle composed of materials is added to the material for a growth base. 2. The method according to claim 1, wherein the seeds of the plant and a material for growing the plant are mixed with water and used in a slope greening method in which the seeds are sprayed on the slope to connect the aggregate to the granular material. A crosslinked structure particle comprising a fibrous material as a composition.