JPH11315542A - Vegetation base body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vegetation base body having excellent adhesive properties onto the face of a slope. SOLUTION: Vegetation materials 5 consisting of vegetation seeds, a fertilizer, a soil conditioner, etc., are interposed between a mat-shaped fiber aggregate 2 having a large number of void sections 22 and flexibility and being formed in thick size by entwining water-repellant raw materials 21 having small diameters and a thin water-soluble sheet 3, in which long fibers having small diameters are arrayed mainly in one direction and entwined mutually and bound and which has excellent dispersion and is formed of water-soluble nonwoven fabrics, and these aggregate, sheet and vegetation materials are joined and unified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetation substrate having good adaptability, which is laid on a slope for greening vegetation.

[0002]

2. Description of the Related Art Generally, vegetation is planted on a slope formed with road construction, land development, and the like in order to protect the landscape and maintain the landscape. As one of such greening methods, there is a spraying method in which a plant material mixed with plant seeds, various soil improving materials, water retaining materials, fertilizers, and the like is sprayed on a slope with a spraying machine.

[0003] Such a spraying method requires a large spraying machine and a specialized construction worker, and has a drawback in that the construction cost is high. Various mats have been proposed.
As the vegetation mat, for example, as shown in FIG. 4 , a sheet b made of a soluble material is adhered to a net a formed of a reinforcing fiber material, and vegetation seeds c,
Are attached using a water-soluble glue material.

[0004]

However, as the material of the sheet b composed of the above-mentioned soluble material, for example, soft cotton, soft nonwoven fabric, pulp nonwoven fabric, insoluble paper and the like which do not hinder the germination and growth of seeds can be used. However, when the sheet b is integrated with the net a using a water-soluble glue material, the sheet b has a little lack of flexibility and may not be sufficiently adhered to a sloped surface d having irregularities. There was a disadvantage that it lacked.

In such a case, the vegetation seeds c,.
May not be able to settle, and even when sprouted, it cannot root sufficiently in the soil, resulting in poor growth or withering in the dry season, resulting in uneven greening. there were.

When the vegetation seeds c,... Are adhered to the surface of the sheet b made of a soluble material as described above, large tree seeds such as dwarf chestnuts are carried out or carried out during or before construction. In many cases, the conventional vegetation mats have difficulty in stably retaining woody seeds.

It is an object of the present invention to provide a vegetation substrate laid on a slope for greening vegetation as described above, and to improve the adhesion to the slope.

[0008]

According to the present invention, means for solving the above-mentioned problems are constituted as follows. That is, the thin-repellent aqueous material entangled with thick to form a mat-shaped fiber aggregate with a high flexibility of the gap portion, intertwined with each other mainly arranged in one direction long fibers diameter are bound Vegetable seeds, fertilizer, and a thin water-disintegrable sheet formed of a water-disintegratable nonwoven fabric with excellent dispersibility
These are joined and integrated by interposing a vegetation material such as a soil improvement material.

According to this means, the mat-like fiber aggregate is formed into a flexible and thick material having many voids by entanglement of a small-diameter water-repellent material. Thin water-decomposable sheets are joined and integrated, and a vegetation material is interposed and supported between them.Thus, unlike conventional products, the flexibility of the vegetation substrate is greatly improved, and it fits well on the slopes, Adhere to the surface.

[0010] Further, the thick mat-like fiber aggregate is
Since the water-repellent material having a small diameter is entangled with a large amount of voids and high flexibility, the heat retention is enhanced, and wind and rainfall are prevented from directly hitting the vegetation seeds.

By the time the vegetation seeds grow, the mat-like fiber aggregates are well compatible with the soil, and a uniform thick thick soil layer which has a high air content and is hardly eroded by running water or the like is formed. Therefore, healthy plant growth is promoted, and stable greening is achieved.

Further, since the thin water-disintegratable sheet is formed by arranging small-diameter long fibers mainly in one direction and entangled with each other, excellent dispersibility is exhibited by moisture such as rainfall. That is, the fibers are easily entangled with each other and are likely to fall apart.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the vegetation substrate of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing one embodiment of a vegetation substrate 1, and FIG. 2 is a longitudinal sectional view of the vegetation substrate 1. Reference numeral 2 denotes a flexible thick member having many voids 22 formed by entanglement of small diameter water repellent materials 21. 3 is a thin water-disintegrable sheet adhered to the lower surface of the mat-like fiber aggregate 2 using a water-soluble glue material 4, and 5 is a water-soluble glue material 4 It is a vegetation material adhered by using, for example, a vegetation seed 6 of a large woody species such as a chestnut chestnut, a fertilizer 7, and a soil improvement material 8 such as vermiculite, bentonite, and dried peat moss.

As the small-diameter water-repellent material 21 forming the above-mentioned mat-like fiber aggregate 2, synthetic resin fibers (50 to 3000 denier) such as polypropylene and polyethylene can be used. By shaping into a mat shape intricately entangled like a scourer, it is possible to form a mat-like fiber aggregate 2 having many voids 22 and rich in flexibility. Alternatively, corrosive fibers that have been subjected to a water-repellent treatment may be used as long as they are present without disappearing for about three to one and a half years from the construction.

The water disintegrable sheet 3 may be formed, for example, as follows. That is, 30 to 50% of the pulp fiber and 35 to 50% of the polypropylene fiber.
45% and 10 to 30% of powdery or fibrous polyvinyl alcohol, preferably 40% of softwood pulp fiber and 40% of said polypropylene fiber having 2 denier thickness and 5 mm length The water-disintegrable sheet 3 in a blending ratio of 20 to 30% of 1 denier thick 3 mm long fibers as the polyvinyl alcohol.
Can be formed. The pulp fibers, the polypropylene fibers and the polyvinyl alcohol are not necessarily limited to the above proportions, and other water-disintegratable nonwoven fabrics can also be used as the water-disintegrable sheet 3.

The water-disintegratable sheet 3 is formed as a water-disintegratable nonwoven fabric by arranging the above-described fine long fibers mainly in one direction, entangled with each other and binding them. Therefore, the dispersibility of the fiber is excellent. That is, the fibers are easily entangled with each other and are likely to fall apart.

Vegetable seeds 6, fertilizer 7, and soil improving material 8 are previously adhered to such a thin water-disintegrable sheet 3 with a water-soluble glue material 4 made of polyvinyl alcohol, and the above-mentioned mat-like fiber aggregate is attached. By attaching the water-soluble glue material 4 to the body 2, the vegetation substrate 1 with high flexibility can be formed.
The mat-like fiber aggregate 2 has a high porosity,
Therefore, even large woody seeds can be loaded and supported without difficulty, and there is no loss due to falling off of the vegetation material 5 until and during construction.

Since the vegetation substrate 1 formed as described above is thick but highly flexible, even if the vegetation substrate 1 is laid on a slope 9 that is not sufficiently tempered and has irregularities (FIG. 2). ), It is easy to adapt to the slope 9 and can be evenly adhered without generating a gap, thereby effectively preventing the occurrence of soil erosion due to rainfall, snow melting, wind erosion, frost heave and the like.

Further, the mat-like fiber aggregate 2 can prevent the vegetation material 5 from scattering due to the wind, reduce a sudden temperature change, and also reduce the impact during rainfall.

When the vegetation seeds 6 grow, the mat-like fiber aggregates 2 uniformly form a thick guest soil layer which has a high air content and is not eroded by running water. In addition, it promotes healthy growth of plants and can achieve even greening.

In the above embodiment, it is needless to say that not only woody species but also other herbs, shrubs, wild plants and the like can be used as the vegetation seeds 6.

[0022]

As described above, according to the present invention,
The vegetation substrate is rich in flexibility because the vegetation material is interposed and supported between the flexible thick mat-like fiber aggregate having many voids formed by entanglement with the small-diameter water-repellent material and the water-disintegratable sheet. It is easy to adjust to the slope, can be evenly adhered to the slope, can effectively prevent the occurrence of soil erosion due to rainfall, snow melting, wind erosion, frost heave, etc., and can protect the slope .

Further, the thick mat-like fiber aggregate can prevent the vegetation material from scattering due to the wind and reduce a sudden temperature change, and can also reduce impact on vegetation seeds during rainfall. Seeds can be protected from environmental conditions along with other vegetation material.

By the time the vegetation seeds grow, the mat-like fiber aggregates are well adapted to the soil, and a uniform thick thick soil layer having a high air content and being hardly eroded by running water or the like. To promote healthy plant growth,
Stable greening can be achieved.

Moreover, the thin water-disintegratable sheet is easily entangled with each other due to moisture such as rainfall, and is apt to fall apart. Effectively demonstrate the intended task of adapting to the slope.

[Brief description of the drawings]

FIG. 1 is a partially enlarged perspective view showing one embodiment of a vegetation substrate of the present invention.

FIG. 2 is a cross-sectional view of a state laid on the slope.

FIG. 3 is a cross-sectional view illustrating an example of a construction state of a conventional vegetation mat.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... vegetation base, 2 ... mat-like fiber aggregate, 21 ... water repellent material, 22 ... void part, 3 ... water-disintegrable sheet, 4 ... water-soluble glue material, 5 ... vegetation material.

Claims (1)

[Claims] 1. A thick, flexible mat-like fiber aggregate having many voids formed by entanglement of small-diameter water-repellent materials, and small-diameter long fibers are mainly arranged in one direction and entangled with each other. A vegetation material consisting of vegetation seeds, fertilizer, soil improvement material, etc. is interposed between a thin water-disintegrable sheet formed of a water-disintegratable nonwoven fabric with excellent dispersibility that is bound together, and these are joined and integrated. A vegetation substrate characterized by comprising: