JP2001011862A - Vegetable soil base and water retaining body - Google Patents

Abstract

(57) [Summary] [Problems] Even if the water retention material swells due to water absorption, the aeration and water permeability of the soil are ensured, so that the plant has good rooting and eliminates root rot, and is lightweight and withstands tread pressure to retain water. To provide a vegetation soil base that can prevent scattering of wood and deterioration and discoloration. SOLUTION: The vegetation soil base 1 according to the present invention is formed by forming an expandable water retention material 4 in a columnar shape and burying it vertically in the soil 3, and covering an upper surface 5 of the expandable water retention material with soil. I have. As a result, even if the water retention material swells due to water absorption, the ventilation and water permeability of the soil 3 are ensured, so that the plant has good rooting and is activated, and is lightweight, resists treading pressure, and prevents the water retention material from scattering and discoloration. are doing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetation soil base, and more particularly to a vegetation soil base which has improved water retention, does not impair air permeability and water permeability, and is resistant to tread pressure.

[0002]

2. Description of the Related Art In recent years, coexistence with the natural environment and ecosystems has been demanded, and the creation of multi-natural rivers that can survive a wide variety of organisms has been promoted nationwide, and stabilized from the viewpoint of natural environment conservation and landscape. It has been put into practice because greening of the processing surface has been considered. On slopes such as roads and steep slopes in urban and residential areas, stabilize the soil base and protect the surface so that planted plants and seeds of plants are not washed away by rainwater, etc., and plants die. An important issue is to establish a water retention method to keep sufficient water in the soil base on which the roots of the plants grow so that they do not occur.

Conventionally, in order to improve the water retention of the soil, a superabsorbent resin 40 formed in a sheet shape as shown in FIG. As shown in (1), the particulate superabsorbent resin 42 is mixed into the soil. However, when the superabsorbent resin enters a water retaining state, the following problems become apparent. Because the swollen superabsorbent resin is flexible, the superabsorbent resin forms a laminated state in the direction of air permeability and permeation, and the pores of the soil are filled without gaps even if the packing density of the soil does not change. The properties and water permeability are reduced. If the mixing ratio is reduced to avoid this, a water retention effect that can surpass the soil improvement material cannot be expected. The swollen superabsorbent resin turns into a paste, which surrounds the roots of the plant and makes it difficult for the roots to breathe. As the swollen super absorbent resin walks on the soil base, the direction of treading and the direction of swelling are the same, so it is directly subjected to the compressive force due to treading and becomes highly water absorbent resin that has become gelatinized with moisture. Is dissipated to the surroundings and shrinks, and since there is a highly water-absorbing resin between the soil particles that shows the same properties as liquid, it cannot withstand tread pressure because it cannot generate condensation and adhesion between soil particles . For this reason, the above-mentioned problems are evident, and at the same time, a concave portion is partially formed on the surface of the soil base to impair the aesthetic appearance.

[0004] Symbiosis with the natural environment is not limited to the above-described slope of riverbeds and slopes of urban roads, but has also been developed in cultivation of plants on the veranda of office buildings, high-rise houses, and rooftops. In the case of the above, the above-mentioned problem similarly occurs. In particular, the cultivation of plants on the veranda and rooftops involves forming a soil base consisting of a drainage layer and a soil layer on the floor, sowing plant seeds on the soil and planting the soil. It is said that when planting grass or the like alone, at least a 15 cm embankment is required for the grass to take root. For this reason, the cultivation of plants on the veranda and rooftops is inseparable from the soil layer, which generates considerable weight, and the supply of water containing nutrients that are essential for plant growth. Have to support a significant weight of both.

[0005] For this reason, when the load on the floor increases, an extra load is applied to structures such as columns and beams. Therefore, as shown in FIG. It is desired to reduce the thickness of the soil layer 46 of the garden 45 that has been made thin to reduce the weight of the soil base. However, since the reduction in the weight of the soil layer 46 causes a decrease in the water retention performance, it is necessary to take sufficient water retention means, and as shown in FIG. 8
As shown in (b), the structure similar to that of the above-mentioned public facilities in the outside world is adopted, though small, by mixing the particulate superabsorbent resin 49 into the soil. For this reason, the above-mentioned problems are also apparent in this case.

Furthermore, in the case of planting on the veranda of an office building or high-rise house, or on the roof, the floor on which the soil is laid and the surface of the roof are kept horizontal, which results in poor drainage. In addition to the above problems, the following specific problems are raised. When the sheet-like superabsorbent resin is laid on the bottom of the soil, the sheet is made thicker to retain water, thereby deteriorating air permeability and water permeability. Sheet thickness 4c
m, it is difficult to secure the required water holding capacity, and the stepping pressure has an adverse effect on the plants. When mixing the granular super absorbent resin into the soil,
Compression of the soil due to treading directly affects the growth of the plant as a decrease in the embankment, or the granular superabsorbent resin is dispersed on the surface of the soil and scatters around it, and the surrounding area is stained. Gives inferiority to sex and beauty.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems that have become apparent. Even if the water-retaining material swells due to water absorption, the ventilation and water permeability of the soil can be ensured. By doing so, it is an object of the present invention to provide a vegetation soil base that has good rooting and eliminates root rot, is lightweight, can withstand tread pressure, and can prevent the water retention material from scattering and degrading.

[0008]

According to a first aspect of the present invention, there is provided a vegetation soil base in which a water retention material is formed in a columnar shape and buried vertically in the soil, and the upper surface of the water retention material is covered with the soil. Even if the water retention material swells due to water absorption, the aeration and water permeability of the soil are ensured, so the plant is well rooted and activated, and withstands tread pressure while being lightweight, preventing the water retention material from scattering and discoloration. ing.

A vegetation soil base according to a second aspect of the present invention is the vegetation soil base according to the first aspect, wherein soil of the vegetation soil base is formed on a drainage layer provided on a structural material of a building. In addition to the above functions, it secures air permeability and permeability in the soil and restrains the movement of the soil to reduce the weight in thin soil, and the plant has good rooting and root rot is prevented. ing.

A vegetated soil base according to a third aspect of the present invention is the vegetated soil base according to the first or second aspect, wherein the water retention material is composed of a columnar core material and a water absorbent water retention material. In addition to the above functions, even if the water retention material swells due to water absorption, the columnar shape is maintained, thereby ensuring the air permeability and water permeability of the soil.

A vegetation soil base according to a fourth aspect of the present invention is the vegetation soil base according to the first or second aspect, wherein the water retention material is composed of columnar holding fibers and a superabsorbent resin. In addition to the above functions, sufficient water retention and air permeability and permeability in soil are ensured.

The vegetation soil base according to the invention of claim 5 is the vegetation soil base according to any one of claims 1 to 4,
It is characterized by connecting the columnar water retention materials at predetermined intervals, and in addition to the above functions, prevents the water retention material from falling down and restricts the movement of the soil while ensuring air permeability and water permeability in the soil And secure a stable soil base.

The vegetation soil base according to the invention of claim 6 is the vegetation soil base according to any one of claims 1 to 4,
It is characterized in that the columnar water retention material is composed of a plurality of connected bodies and arranged in the soil, and in addition to the above functions, the movement is restricted while dividing the soil, and the permeability and permeability of the soil To secure a stable soil base as a whole.

The water retaining body according to the invention of claim 7 is the first aspect of the invention.
7. A water retention material for use in a vegetation soil base according to any one of items 1 to 6, wherein the water retention material is formed by connecting columnar water retention materials at a predetermined interval with a connecting material, and the water retention material is arranged in a self-supporting manner. Construction is easy.

The water retaining body according to the invention of claim 8 is the invention of claim 7.
In the water retention body described in the above, characterized in that the water retention material is composed of columnar holding fibers and a highly water-absorbent resin, in addition to the above functions, ensure sufficient water retention and air permeability and water permeability in the soil ing.

According to a ninth aspect of the present invention, there is provided a method of manufacturing a water retaining body according to the seventh or eighth aspect, wherein a core material having a predetermined length forming a columnar water retaining material and a water absorbing material are provided. Water-retaining material of any shape is formed by combining the water-retaining materials, and then the water-retaining material is subjected to a predetermined cutting process in the longitudinal direction of the core material to form a columnar water-retaining material and a connecting material. A water retaining body composed of water retaining materials joined at predetermined intervals by a connecting material is simply manufactured.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A vegetation soil base according to the present invention is basically constructed by forming a water retention material in a columnar shape and burying it vertically in soil, and covering the upper surface of the water retention material with soil. Even if the water retention material swells due to water absorption, the aeration and water permeability of the soil are ensured, so that the plant has good rooting and is activated, resists tread pressure while being lightweight, and prevents scattering and deterioration of the water retention material. .
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a vegetation soil base according to the present invention. The vegetation soil base 1 is constructed by laying a soil 3 of a predetermined thickness on a surface 2 such as a riverbed or a slope of a road in an urban area. Accordingly, a lightweight material such as artificial soil used for vegetation can be adopted. Examples of the artificial soil that can be used include perlite, peat moss, boehmicularite, bake ash, perlite, and inorganic expanded olivine obtained by burning clay at a high temperature. The artificial soil used in this case generally has a specific gravity of 0.25 to 0.27 when dry and 0.50 to 0.58 when wet, but any kind of soil can be used. Whether to use it may be appropriately selected depending on various circumstances.

The water retaining material 4 is formed in a columnar shape, is arranged in a vertical column, and is buried in the soil with its upper surface 5 covered with the soil 3. The water retention material 4 is composed of a core material forming a columnar water retention body and a water-absorbing water retention material. When the water retention material swells due to water absorption, the water retention material does not extend in the vertical direction of the columnar water retention material. Each material is selected so as to expand in the radial direction and maintain a columnar body whose shape does not change in the vertical direction. For this purpose, a sponge or sponge-like porous material or fiber material having a desired strength is suitable as the core material, and the following various water-holding resins commercially available as the water-absorbing water-holding material can be used. is there.
Sodium polyacrylate, potassium polyacrylate,
Starch-polyacrylate resin, vinyl acrylate copolymer, modified polyethylene oxide,
Polyvinyl alcohol-maleic acid ester copolymer, isobutylene-maleic anhydride copolymer, polyethylene oxide resin and the like.

In the present embodiment, the columnar body is formed by first using a polyester fiber as a core material, and mixing a fibrous superabsorbent resin such as a polyacrylonitrile-based resin around the core material. By doing so, a pencil-shaped unit water-absorbing material is formed, and then a plurality of unit water-absorbing bodies are bundled together to obtain a desired columnar body. In addition to the formation of pillars,
Polyester fibers function as an adhesive for fibrous polyacrylonitrile-based resin, and can also be constructed by blending polyester fibers and polyacrylonitrile-based resin together at a predetermined ratio. It is not limited to a special form as long as it can form an integral columnar body with the core material and the superabsorbent resin.

The weight ratio of the pillar-shaped holding fiber and the superabsorbent resin constituting the core material is appropriately selected according to the range for defining the compressive force to the soil generated by swelling at the time of water absorption, as described later. You. In addition, if the amount of the superabsorbent resin is too large, a state in which the superabsorbent resin becomes gelatinized by the absorbed moisture is formed, and the roots of the plant become water retaining materials 4.
It is necessary to consider the above weight ratio from the fact that it becomes difficult to breathe when entangled with the surface of the plant and inhibits the growth of the plant. However, according to the experimental results, the ratio of 3: 7 is suitable for a wide range of situations Value.

Forming the water retention material 4 in a columnar shape and arranging the columnar bodies vertically and burying it in the soil in a vertical state can provide ample water supply to the plant 6 to be planted and positively control the rhizome 7. Cultivation is possible. In the case of a conventional sheet-like or granular water retention material, the roots of the plant will extend in the soil in search of water, but in the vegetation soil base according to the present invention,
Since the water retention material 4 is formed in a columnar shape, the columnar body is made vertical, and the upper surface 5 is buried in a state of being covered with the soil 3, the water retention material 4 is disposed near the surface of the soil, and The young rhizome can immediately reach the upper surface 5 of the water retention material and receive a supply of moisture. As a result, the growing rhizome 7 continues to extend almost vertically from the surface of the soil along the surface of the columnar water retaining material so as to be entangled with the surface of the columnar water retaining material 4 with ample water, and reaches the deepest part of the soil. From the horizontal direction. From the above, the thickness of the vegetation soil base can be distributed to the depth at which the roots of the plant are most active, even if the soil is as thin as about 10 cm from the surface layer, Can be firmly established in the depth direction of the soil.

Further, forming the water retention material 4 in a columnar shape and arranging the columnar bodies vertically as in the vegetation soil base according to the present invention exerts an advantage also in the structure of the vegetation soil base. I have. That is, the vegetation soil base according to the present invention comprises:
Even if the water retention material does not expand due to the release of water, or if it is in a swollen state due to abundant water absorption, the air permeability and water permeability in the soil are reliably maintained, and at the same time, the soil surface Even if the soil is compressed by the foot pressure caused by walking,
In addition to ensuring the soil thickness necessary for growing plants, it also prevents the occurrence of partial depressions on the soil surface, eliminating the risk of damaging the appearance.

As described above, in the vegetation soil base according to the present invention, the water retention material 4 is formed in a columnar shape, the columnar bodies are arranged vertically, and the upper surface 5 is covered with the soil 3 and buried in the soil. Therefore, the vegetation soil base is made lightweight with an effective arrangement of thin soil and water retention material, and constantly maintaining the air permeability and water permeability in the soil to promote active growth of plants and eliminate root rot, Even when the soil is compressed by treading on the surface, the soil thickness necessary for growing plants is secured, and the occurrence of partial recesses on the soil surface is prevented, thereby eliminating the risk of damaging the appearance.

FIGS. 2 and 3 are schematic diagrams for explaining a functional relationship for displaying the above-mentioned state. FIG. 2 is a side view showing a non-expanded state before absorbing moisture.
Are formed in a columnar shape, the columns are arranged vertically, and are buried in the soil with the upper surface 5 covered with the soil 3. In this state, since there are sufficient gaps in the pores between the soil particles, air and water from the soil surface easily penetrate into the soil as shown by arrow 8 through these gaps, Sufficient air permeability and water permeability are ensured in the soil.

For this reason, when water is supplied from the soil surface, the water is absorbed from the entire surface of the columnar water retention material, and the water retention material becomes sufficiently swollen by the abundant moisture, and as described above. In addition, it can greatly contribute to the cultivation of plant plants. In addition, the fact that the water retention material is buried in a state that does not hinder the direction in which air or water passes through means that excess water can be discharged to the outside of the vegetation soil base with an appropriate capacity without staying in the soil. In addition, the risk of rhizomes in the soil causing root rot due to excess water is avoided.

Further, since the stepping pressure due to walking on the soil surface or the like is applied vertically to the soil and the upper surface of the columnar water retaining material 4, the compressive expansion of the water retaining material 4 radiates radially around the columnar body. become. The radial force from the water retention material is
As it acts to increase the packing density of the soil existing between the water retention materials, it generates cohesion and adhesion between the soil particles,
Acts to increase normal stress on the soil. As a result, the water retention material will increase the resistance to tread pressure, and will act to prevent the formation of depressions due to walking on the surface of the soil base, thereby impairing the beauty of the vegetated soil base. Avoided.

FIG. 3 is a side view (a) and a plan view (b) showing a state in which the water retention material is swollen by water absorption. In this embodiment, the plane area is 18 cm × 18 cm = 324 c
soil 3 m ^2, which buried water-retaining material 10 formed into a columnar shape with a diameter of 5 cm. Therefore, the occupied area is 19.
6 cm ² , and the area ratio of water retention material to the soil surface is 2
It is 4.3%. Experiments were conducted in the above embodiment, but the numerical values such as breathability, water permeability and tread pressure are as follows:
It was comparable to that of the water retention material before water absorption shown in FIG.

This is because, in the vegetation soil base according to the present invention, the water retention material 10 is formed in a columnar shape, and the columnar bodies are arranged vertically, so that even if the water retention material 10 swells, the air or water is maintained. Penetrates in the gap direction of the soil parallel to the water retention material as indicated by the arrow 11, and it is assumed that the influence of the swelling expansion of the water retention material is eliminated. That is, even if the water retention material 10 swells, the expansion direction is perpendicular to the direction of the arrow 11 through which air or water passes as shown by the arrow 12, so that the expansion force due to the swelling is surrounded by the water retention material. Compressed soil around the soil, but even if the packing density of the soil increases, the gaps between the soils will not be filled with superabsorbent resin. Not.

Therefore, even if the water retaining material 10 swells, the air and water pass through without any influence within the range of the area ratio employed in the present embodiment, and the air and water swell in terms of air permeability and water permeability. Indicates that the problem does not occur. However, if the buried area ratio of the water retention material is too large, the density between the soil particles is extremely small and the packing density is high enough to block the passage between the soils. It can be said that the range centered on the value of is an appropriate ratio.

As for the stepping pressure due to walking on the surface of the soil or the like, since the state of further filling between the soils is formed from the non-swelling state of FIG. 2, the swollen columnar water retention material 10 Further, it acts to further increase the packing density of the soil existing between the water retaining materials, thereby generating cohesive force and adhesive force between the soil particles. For this reason, the vertical stress generated in the soil works so as to further increase, so that the swollen columnar water retention material 10 also has a function of avoiding impairing the appearance.

FIG. 4 shows an embodiment in which the vegetation soil base according to the present invention is installed on the roof of a building or on a veranda.
FIG. 4A is a side sectional view, and FIG.
It is a (b)-(b) sectional view of (a). Vegetable soil base 2
0 is built on the structure 21 of the building. A drainage layer 22 is provided on the structure 21.
After laying a soil separation layer 23 such as a nonwoven fabric on the surface, a lightweight artificial soil 24 is built up to a thickness of about 10 cm.

In the artificial soil 24, a water retention material 25 formed in a columnar shape is buried with the columnar body arranged vertically. The upper end of the water retention material 25 is covered with the soil 24 so that the water retention material 25 is exposed to the surface of the soil 24 to prevent deterioration due to ultraviolet rays from occurring. Since the water retention material 25 in the present embodiment has a specific gravity of 0.14 to 0.15 in a dry state, the vegetation composed of a mixture of artificial soil having a specific gravity of 0.25 to 0.27 in a dry state The total weight of the soil base 20 is reduced by 10% or more even when the area ratio of the water retention material to the soil surface is set to 24.3%.

The water retention material 25 is obtained by blending a high water-absorbing resin such as a polyacrylonitrile-based resin having a fibrous shape with a polyester fiber as a core material at a ratio of 3: 7 to form an integral columnar body. Therefore, the rhizome 28 of the plant entangled on the surface of the water retention material 25 is not difficult to breathe due to the gelatinization of the superabsorbent resin, and the growth is not hindered.

The area ratio of the water retention material to the soil surface is as follows:
As in the above embodiment, the water retention material 2 is set to 24.3%.
Even if 5 swells, air and water penetrate in the gap direction of the soil 24 parallel to the water retention material, so that the water retention material 25 is not affected by the swelling expansion. As a result, the water retention material 25 can maintain the air permeability and the water permeability even if the water supplied from the upper surface 29 and the side surfaces of the columnar body is sufficiently sucked in or supplied to the soil 24 in advance or later to maintain the air permeability and the water permeability. 27 breeding. The air permeability and the water permeability of the soil are secured because the excess water is guided to the drainage layer 22 through the soil separation layer 23 such as a nonwoven fabric without staying in the soil 24 and discharged outside the vegetation soil base. Also, the rhizome 28 in the soil does not cause root rot due to excess water.

The stepping pressure caused by walking on the surface of the soil is
Since 4 and the water retention material 25 are added vertically to the upper surface 29 of the water retention material 25, the compressive expansion of the water retention material 25 diverges around the columnar body. Radial force from the water retention material acts to increase the packing density of the soil existing between the water retention materials,
By generating cohesion and adhesion between the soil particles, it acts to increase the vertical stress on the soil and acts to increase the resistance to tread pressure. Therefore, even in a garden in a narrow space such as a rooftop or a veranda, even if it enters the soil in order to care for the planted plants, it is possible to prevent the formation of a recess due to walking on the surface of the soil base. , Without compromising the aesthetics of the garden.

Forming the water retention material 25 in a columnar shape and arranging the columnar bodies vertically and burying the same in the soil can provide ample water supply to the plant 27 to be planted and actively grow the rhizome 28. Is possible. As mentioned above, the root group that actively absorbs the most nutrient water for a common plant is
Although it is said to be distributed at a depth of 10 to 20 cm from the surface layer, the thickness of the soil of the vegetation soil base constructed on the rooftop, veranda, etc. is set to about 10 cm in order to reduce the weight.

Therefore, although it is originally impossible to form a plant root group as described above, in the vegetation soil base 20 shown in the present embodiment, the plant 27 planted there is young. The problem is solved by causing the rhizome 28 to immediately reach the upper surface 29 of the water retaining material 25 and receiving the supply of moisture. According to the above-described configuration, the root group that grows by nourishment from the water retention material 25, from the top surface 29 of the water retention material 25, entangles with the surface of the columnar water retention material 25, which is rich in moisture, from the surface of the soil 24. Since the elongation is continued almost vertically along the surface of the material 25, it can be surely fixed in the depth direction of the soil. In order to ensure the air permeability and water permeability of the soil 24, the surplus water is discharged to the outside of the vegetation soil base 20 without staying in the soil, and the rhizome 28 in the soil undergoes root rot due to the surplus water. I have lost it.

Further, in the present embodiment, as shown in FIG. 4, the water retaining material 25 is connected to each other by a horizontal bar 26 so as not to roll over and supported by each other. The connecting means is not limited to the horizontal bar, and a flexible member such as a string can be used. Mutual support of the water retaining materials 25 is not only equivalent to mutually supporting the whole, but also a plurality of water retaining materials 25 are connected to each other to form a set of blocks, and each block is independently disposed in the soil as appropriate. Alternatively, the blocks may be connected to each other to support each other. Mutual support of the water retaining material 25 is required when the vegetation soil base is constructed.
3. It is easy to arrange the water retention material on the surface of 3 and the soil can be included without paying attention to the overturn of the water retention material even in the supply of artificial soil, so the construction efficiency can be improved and the construction period can be shortened. I have.

The mutual support of the water retention material not only prevents the rollover, but also restricts the movement of the water retention material on the vegetated soil base and the movement of the lightweight soil surrounded by the adjacent water retention material, and at the same time suppresses the stepping pressure. The function to increase the resistance to is added. Thus, even if the vegetation soil base is constructed of thin soil with no depth, the vegetation soil base is structurally solid, eliminating the need for special additional equipment in the building.

As described above, when the vegetation soil base according to the present invention is installed on the roof of a building or on the veranda,
A light artificial soil 24 is put on the drainage layer 22 provided on the structure 21, the water retention material 25 is formed in a columnar shape, the columnar members are arranged vertically, and the upper surface 29 is covered with the soil 24. By burying it in the soil, the vegetation soil base is made lightweight with an effective arrangement of thin soil and water-retaining materials, and activated cultivation of plants by constantly maintaining air permeability and water permeability in the soil When the soil is compressed by treading on the surface of the soil, the soil thickness necessary for growing plants is secured and the occurrence of partial recesses on the surface of the soil is prevented. Is lost.

FIGS. 5 and 6 are perspective views showing another embodiment of the water retaining material integrated by connection. FIG. 5 is a perspective view showing an embodiment in which the columnar water retention materials are connected to each other with a connecting material. The water retaining body 30 integrates a columnar water retaining material 31 with a plate-like connecting material 32 so as to be integrated. The water retaining body 30 is structurally solid by forming a bonding state over the entire area of the columnar surface of the water retaining material 31, and the soil supplied into the water retaining body completely stops its movement. Will be blocked. Therefore, the handling when constructing the vegetation soil base is facilitated, and the soil can be introduced without worrying about the collapse of the water retaining body even in the supply of the artificial soil, so that the construction efficiency is further improved as compared with the above embodiment. ing.

[0043] The plate-like connecting member surely prevents the movement of the water retention material on the vegetation soil base and the movement of the lightweight soil surrounded by the adjacent water retention material, thereby further increasing the resistance against tread pressure. . Thus, the vegetation soil base is structurally robust, even for construction on thin soils without depth.

Further, mutual support of the water retention materials may be completed and placed as a single product in which a predetermined number of water retention materials are integrally connected using an arbitrary connecting material in a water retention material manufacturing plant or the like. As shown in the figure, nine water retention materials are integrated into a rectangular shape to form an integrated product. However, compared to work on site, production at a factory is easier, and handling of finished products is easier. This is the recommended form because it eliminates complexity. And, even at the construction site where the vegetation soil base is constructed, it is possible to omit the labor of connecting the connecting members to each water retention material and integrally connecting them, and at the same time, the installation on the installation surface can be performed simply and quickly. As such, it will also help improve the efficiency of vegetation soil base construction.

FIG. 6 is a perspective view showing an embodiment in which the cross section of the columnar body is made rhombic and connected to each other with a connecting member.
The water retaining body 35 is formed by forming the cross section of the columnar body 36 into a rhombus shape, and connects the connecting members 3 having the same water retaining performance as the columnar body between them.
7 are integrally connected. Therefore, the water retaining body can be formed without combining a plurality of members, and the production efficiency can be improved.

The water retaining body 35 is formed by arranging the core material of the water retaining material in the longitudinal direction in the direction in which the columnar body 36 is first formed, and combining the core material and the fibrous water-absorbing water retaining material by blending. Manufactures water retention materials. Water retention material 3 from water retention material
In the case where the water-holding material 5 is immediately formed, a cylindrical hole 38 is cut out along the longitudinal direction of the core material while leaving the columnar body 36 and the connecting member 37 in the water-holding material. The body 35 is manufactured. In the water retention body 35,
The remaining portion surrounded by the hole 38 is formed as a rhombic columnar body 36, and the columnar body 36 is integrated with a connecting member 37 having the same water retention performance as the columnar body while being connected to each other. .

On the other hand, the water retaining material having an arbitrary shape is carried into the construction site of the vegetation soil base without being processed immediately, and the column 36 has the same water retaining performance as the column in accordance with the planting condition of the plant. It is also possible to arrange the water retaining bodies 35 connected to each other at 37 while processing them. In this case, an arbitrary columnar body 36 having a desired shape is formed inside the water retention material according to the planting situation of the plant, and the columns 36 are connected to each other with a connecting member 37 having the same water retention performance as the columnar body. Cut out the hole of the and process and form an integral water retention body,
It is possible to easily supply a water retention body in which a columnar water retention material that exactly matches the construction form of the vegetation soil base can be arranged. As described above, since the water retention body of the present embodiment can be formed by merely cutting out a cylindrical hole or an arbitrary-shaped hole in the water retention material without using other members,
Its manufacture is very simple and the manufacturing cost can be reduced.

The mutual support of the water retention material is not limited to the case where the vegetation soil base of the present embodiment is installed on the roof of a building or on a veranda, but may be applied to a riverbed or a road in an urban area shown in FIG. The present invention is also applicable to a case where a vegetation soil base is laid on a surface 2 such as a surface.

As described above, the present invention has been described in detail based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention. Of course, it is possible.

[0050]

According to the first aspect of the present invention, the vegetation soil base comprises:
The water retention material is formed into columns and buried vertically in the soil, and the top surface of the water retention material is covered with soil. Even so, it ensures the ventilation and water permeability of the soil, activates the plant with good rooting, activates it, resists tread pressure while being lightweight, and has the effect of preventing the water retention material from scattering and discoloring.

According to a second aspect of the present invention, there is provided a vegetation soil base according to the first aspect, wherein the soil of the vegetation soil base is formed on a drainage layer provided on a structural material of a building. When installed on the roof of a building or on the veranda, the plant is well rooted while securing light permeability and permeability in the soil and restraining the movement of the soil to reduce the weight in thin soil. It has the effect of preventing root rot.

A vegetation soil base according to a third aspect of the present invention is the vegetation soil base according to the first or second aspect, wherein the water retention material is composed of a columnar core material and a water-absorbing water retention material. Therefore, even if the water retention material swells due to water absorption, it maintains the columnar shape, thereby exhibiting the effect of ensuring the permeability and water permeability of the soil.

A vegetation soil base according to a fourth aspect of the present invention is the vegetation soil base according to the first or second aspect, wherein the water retention material is composed of columnar holding fibers and a superabsorbent resin. It has the effect of ensuring sufficient water retention and air permeability and water permeability in the soil.

The vegetated soil base according to the fifth aspect of the present invention is the vegetated soil base according to any one of the first to fourth aspects,
Since the columnar water retention material is characterized by being connected to each other at predetermined intervals, it exerts the effect of restraining the movement of the soil while securing air permeability and water permeability in the soil and securing a stable soil base. I have.

The vegetation soil base according to the invention of claim 6 is the vegetation soil base according to any one of claims 1 to 4,
Since the columnar water retention material is characterized by comprising a plurality of connected bodies and arranging them in the soil, it restricts the movement of the soil while constraining it, securing air permeability and water permeability in the soil as a whole It has the effect of securing a stable soil base.

The water retention body according to the seventh aspect of the present invention is the first aspect of the invention.
6. The water retention material used for the vegetation soil base according to any one of items 1 to 6, wherein the water retention material has a columnar shape and is connected at predetermined intervals by a connecting material. It has the effect of facilitating the construction of the foundation.

The water retaining body according to the eighth aspect of the present invention is the seventh aspect of the present invention.
In the water retention material according to the above, since the water retention material is characterized by comprising a columnar holding fiber and a highly water-absorbent resin, in addition to the above effects, ensure sufficient water retention and air permeability and water permeability in the soil The effect that can be exhibited.

According to a ninth aspect of the present invention, there is provided a method for manufacturing a water retaining body according to the seventh or eighth aspect, wherein a core material having a predetermined length forming a columnar water retaining material and a water absorbing material are provided. Water-retaining material is formed by combining the water-retaining materials, and then a predetermined cutout process is performed on the water-retaining material in the longitudinal direction of the core material to form a columnar water-retaining material and a connecting material. The water retention material constituted by connecting the water retention materials at predetermined intervals by a connecting material is simply manufactured, and the effect of reducing the manufacturing cost of the water retention material is exhibited.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a vegetated soil base according to the present invention.

FIG. 2 is a side view showing a non-expanded state before a water retention material used for a vegetation soil base according to the present invention absorbs moisture.

FIG. 3 is a side view showing a state in which a water retention material used for a vegetation soil base according to the present invention absorbs moisture and swells.

FIG. 4 is a view showing an embodiment in which the vegetation soil base according to the present invention is installed on a rooftop or a veranda of a building.

FIG. 5 is a perspective view of a water retaining body to which a water retaining material is connected.

FIG. 6 is a perspective view of another water retaining body to which a water retaining material is connected.

FIG. 7: Conventional soil base using superabsorbent resin

FIG. 8: Conventional soil base installed on the rooftop or veranda of a building using a superabsorbent resin

[Explanation of symbols]

1 vegetation soil base, 2 surface such as slope, 3 soil,
4 water retention material, 5 top surface of water retention material, 6 planting plant,
7 Rhizome of a plant, 8, 11 Arrow indicating the direction in which air and water pass, 10 Swollen water retention material, 12 Arrow indicating the direction of expansion of water retention material, 20 Vegetable soil base, 21 Structure,
22 drainage layer, 23 soil separation layer, 24 lightweight artificial soil, 25 water retention material, 26 horizontal bar, 27 planting plant, 28 plant rhizome, 29 top surface of water retention material, 3
0, 35 water retaining body, 31 water retaining material, 32, 37 connecting material, 36 columnar body 38 cylindrical hole, 40 sheet-like super absorbent resin, 41 soil, 42 granular super absorbent resin, 45 garden, 46 soil Layer, 47 brick, 48 sheet super absorbent resin, 49 granular super absorbent resin,

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B022 AA05 AB02 BA04 BA11 BA16 BA24 BA25 BB01 BB02 2D044 DA00

Claims (9)

[Claims] 1. A vegetation soil base constructed by embedding a water retention material in soil, wherein the water retention material is formed in a columnar shape and buried vertically in the soil, and the upper surface of the water retention material is covered with the soil. Vegetable soil base characterized by the following. 2. The vegetation soil base according to claim 1, wherein the soil is formed on a drainage layer provided on a structural material of the building. 3. The vegetation soil base according to claim 1, wherein the water retaining material is composed of a columnar core material and a water absorbing water retaining material. 4. The vegetation soil base according to claim 1, wherein the water retention material is composed of columnar holding fibers and a highly water-absorbent resin. 5. The vegetation soil base according to claim 1, wherein the columnar water retention materials are connected to each other at predetermined intervals. 6. The vegetation soil base according to any one of claims 1 to 4, wherein the columnar water retention material is configured in a plurality of connected bodies and arranged in soil. 7. The water retention body used for a vegetated soil base according to any one of claims 1 to 6, wherein the columnar water retention material is connected at predetermined intervals by a connecting material. 8. The water retention body according to claim 7, wherein the water retention material is composed of columnar holding fibers and a highly water-absorbing resin. 9. A water retention material having an arbitrary shape is formed by combining a water absorption material and a core material having a predetermined length to form a columnar water retention material, and then a predetermined length of the water retention material is formed in the longitudinal direction of the core material. The method for producing a water retaining body according to claim 7 or 8, wherein the columnar water retaining material and the connecting material are formed by performing a cutting process.