JP2002332641A - Partition material and greening foundation construction method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily partition a construction object place such as a slope so as to enable definitization of a boundary for dividing a base creation part and a bare ground part, even if there are irregularities on a surface of the construction object place. SOLUTION: A net-like body 3 is laid on the slope 1. After that, flexible partition materials 5 and 68 are installed in such a manner as to correspond to a boundary part between the base creation part 4 and the bare ground part 8 in the creation part 4. The partition materials 5 and 68 can be installed in a state of close contact with the slope 1 even in the presence of the irregularities on the slope 1 by virtue of flexibility of the partition materials 5 and 68. Heights of the partition materials 5 and 68 are greater in dimension than a thickness of a growth base created in the creation part 4. The partition materials 5 and 68, which are, for example, bag-shaped articles such as a sandbag, include at least one of a soil improving material, surface soil, a chip material, a fertilizer and a seed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partitioning material used when a growth base is formed non-surfacely on a slope, a slope, or a bare land such as a degraded bare land, and a greening foundation method using the partitioning material. About.

[0002]

2. Description of the Related Art Conventionally, as a revegetation method used to construct a non-planar growth base on a slope, a slope, or a bare land such as a degraded bare land, for example, Japanese Patent Publication No. 2886514, Japanese Patent Application No. 11-313, and so on. -352773, or Japanese Patent Application No. 11-16
The method described in the specification of US Pat. No. 7630 is known. Hereinafter, the method described in Japanese Patent No. 2886514 is described in Conventional Example 1, the method described in Japanese Patent Application No. 11-352773 is described in Conventional Example 2, and the method described in Japanese Patent Application No. 11-167630 is described. This method is referred to as Conventional Example 3.

In Conventional Example 1, a vegetation base material in which a growth base material and seeds are mixed is arranged in a strip on a bare land to form a growth base, and a rebound containing spilled seeds is deposited on the bare land.
As a result, in Conventional Example 1, a plant community in which pioneer trees and late vegetation transition trees (pole-phase constituent trees) are mixed is created. Further, in Conventional Example 2, when a vegetation base material in which a base material, a bonding material, and seeds are mixed is sprayed on bare ground to form a growth base, the vegetation base material is arranged in a two-dimensional mosaic shape to grow. A base is being created and spraying is performed such that the growth base has a continuous pattern of one or more types of units.

[0004] Further, in Conventional Example 3, after growing a seedling-free growth base in a non-faced manner, a seed-free growth base is formed in the remaining bare land, and as a seed-free growth base. For example, waste is utilized.

[0005] When the construction methods described in the above-mentioned conventional examples 1 to 3 are performed, for example, a net (net-like body) such as a diamond-shaped wire net, a turtle net, or a resin net using an anchor pin or the like.
Is attached to a bare ground in advance, and then, using a water thread, a vinyl rope, a color spray, or the like, a position where the growth base is to be formed is located, and then the formation of the growth base is performed.

[0006] By the way, in the construction methods described in the above-mentioned conventional examples 1 to 3, a growth base is generally formed over a large area in many cases. When the positioning operation is performed, a great deal of labor and time are inevitably required. In particular,
When creating a growth base on a steep slope, the worker must work while hanging on a rope, and it takes a longer time to perform positioning work. There are many.

As described above, in the construction methods described in Conventional Examples 1 to 3, it is extremely troublesome to perform the positioning operation, and if the positioning operation is performed in such a situation, for example,
It is difficult to accurately determine the position of a relatively complicated mosaic design as in Conventional Example 2, and of course, it is difficult to determine the position of a belt or the like which is a relatively simple spray design as in Conventional Example 1. It can be difficult to do.

In addition, the larger the construction area and the steeper the slope, the longer it takes to perform the positioning work. For example, if there is a periodical restriction in the construction, the positioning work itself is not performed. Not only does this cause a great deal of pressure on the construction period, but when considering the construction period, it is inevitably accompanied by an excess of work time, which leads to an increase in labor costs associated with an excess of work time.

In order to solve the above problems, for example, a method described in Japanese Patent Application No. 2000-29874 (hereinafter referred to as Conventional Example 4) and a method described in Japanese Patent No. Conventional example 5).

In Conventional Example 4, the portion where the growth base is sprayed and formed and the portion where the growth base is left bare are separated by color or net structure to facilitate positioning when the growth base is sprayed non-surfacely. . Further, in Conventional Example 4, in order to encourage the seeds flying from the periphery to settle on a slope such as a slope, a fence is provided at the boundary between the base formation part and the bare land part. If a fence is installed, the fence can be used for positioning, and the bare land and the bare land can be separated even when the greening foundation construction net is not used.

On the other hand, in the conventional example 5, when the hard bases and the soft bases are alternately arranged in the bare ground on the flooded surface, a wire mesh form having a structure having an isolated portion made of a wire mesh is used. The conventional example 5 is the same as the conventional example 4 in that two different growth bases are surely divided.

[0012]

When the net of the conventional example 4 is used, the contact between the spraying portion and the bare ground portion is inevitably formed in a plane shape, and as a result, the spraying is actually performed. When performing, it becomes difficult to clearly separate the spraying portion and the bare land portion. In other words, in forming the growth base, in addition to the method of sowing the soil or the growth base material, on slopes such as slopes, generally, an air spray method using compressed air or a pump using a slurry pump. Spraying method is often used. In this case, since the growth base material is pressure-fed by the pressure and sprayed on the construction target surface, it is difficult to perform the spraying operation along the plane dividing line.

[0013] In addition, it is difficult to construct the growth base formed by the spraying operation so that the end of the growth base is squared along the boundary line. For example, when a band-shaped growth base is formed to a predetermined thickness, the cross section thereof has a substantially trapezoidal shape. The difference between the upper and lower bases of the trapezoid will result in a shortage of the growth base capacity required for the spraying part. As a result, there arises a problem that a material having a capacity to be created in design is not used.

For this reason, in actual construction, in order to secure a predetermined growth base formation thickness in the spraying part, the growth base must be sprayed and formed in a wider area than the boundary section. In addition, there is a problem that not only a growth base material than required for design is required, but also a predetermined bare land area cannot be secured.

Further, when the fence-like material of the above-mentioned conventional example 4 is used, there is no problem if there is no unevenness on a bare ground surface such as a slope to be constructed, but there is no unevenness on the bare ground surface. If there is, it will be difficult to install the formwork used for wire mesh work etc. according to the unevenness of the bare ground, and if you dare to install the formwork, it will be necessary to process the formwork finely, The installation work of the frame becomes extremely complicated. As a result, there are problems that not only takes a long time for construction but also increases costs.

[0016] Further, when the growth base is formed non-faced on a bare ground such as a slope, the spraying operator has formed the growth base to a predetermined thickness using the above-described formwork as a guide. As described above, if the bare ground has irregularities and the formwork cannot be fixed to the irregularities, the spraying worker cannot use the formwork as a guide for the spray thickness, which makes the spraying operation extremely difficult. I will.

In addition, even if the growth base is formed at a predetermined sprayed thickness, the entire growth base may have an external appearance, for example, the unevenness of the bare ground may cause the form to protrude from the surface of the growth base. There is a problem that it becomes unsightly.

By the way, in the construction method in which the growth base is formed non-facially on the slope, the growth base is easier to dry as compared with the construction method in which the growth base is sprayed and formed on the entire surface. In the above-described conventional example, while performing the positioning when the growth base is non-faced or fixing the seeds flying from the surroundings, the workability of the greening foundation is improved, and There is a problem in that it is difficult to maintain the water retention of a growth base that is easy to dry.

On the other hand, the conventional example 5 is a method of constructing a greening foundation work on a bare land with a flooded surface. In the case of a surface, a slope, or a degraded land, the conventional example 5
When the construction is performed using the wire mesh form described in (1), when the spraying interval is narrow, it is not possible to expect an improvement in water retention of the growth base, and there is a problem that germination and growth disorders due to drying occur.

A first object of the present invention is to use a partitioning material for a spraying base and a partitioning material for a spraying base which can easily partition the construction target site even when the surface of the construction target site such as a slope has irregularities. To provide a greening foundation method.

A second object of the present invention is to make it possible to form a growth base by clearly defining a boundary between the base formation part and the bare land part, and to finish the end of the growth base so as to be square. An object of the present invention is to provide a partitioning material for a spraying base capable of reducing a material loss at the time of spraying the base, and a greening foundation method using the partitioning material.

A third object of the present invention is to suppress the drying of the grown growth substrate, thereby promoting the germination and growth of the introduced species and efficiently capturing the seeds flying from the surroundings. An object of the present invention is to provide a partitioning material for a spray base and a greening foundation method using the partitioning material.

[0023]

According to the present invention, it is used when a growth base is formed on a bare ground non-facedly, and a base formation part where the growth base is formed and a bare ground part which remains as a bare land. And a partition material characterized by having flexibility, and a height of the partition material is higher than a thickness of a growth base formed in the base formation part. further,
The partition member is desirably a bag-like material such as a sandbag. Further, the bag-like material includes at least one of a soil improvement material, a topsoil, a chip material, a fertilizer, and a seed.

Further, according to the present invention, there is provided a greening foundation construction method used for non-facingly constructing a growth base in a bare land, wherein the partitioning material is removed before forming the growth base. A greening foundation method characterized by having been installed on the ground is obtained, and a greening foundation method used when the growth base is formed non-surfacely on the bare land, wherein the net-like body is formed on the bare land. A greening foundation method is obtained, comprising a step of laying and a step of installing the above-mentioned partition member on the net.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.

Referring to FIG. 1, here, a slope, a slope,
Alternatively, an example will be described in which a growth base is non-facially formed on a bare land such as a degraded land by using a spraying machine. In FIG. 1, the slope 1 is shown as a bare ground, and the slope 1 is divided into a base formation section 4 for forming a growth base in a non-planar manner and a bare ground section 8 remaining as a bare ground. Then, on the boundary line (boundary portion) between the base formation portion 4 and the bare land portion 8, a partition member 5 or 6 is provided.
It is installed as described below.

The surface of the bare ground shown in the figure has irregularities, and the partition member 5 or 6 is formed of a flexible material that flexibly deforms according to the irregularities. For example, the partition member 5 or 6 includes an elastic body such as rubber or urethane, a fibrous material such as glass wool or rock wool, a processed product made of a resin, a bag-shaped material such as a sandbag, a plate-shaped processed product, a resin. Alternatively, a material such as a metal net is used. In any case, any material having flexibility can be used for the partition member 5 or 6. In addition, it is desirable that the partitioning material is a material that decomposes as early as possible and does not remain in the natural world, such as a natural material or a biodegradable resin.

In consideration of workability, the partition material should be processed into a continuous body having a predetermined length or more or processed into a roll so that it can be continuously installed on bare ground during installation work. Preferably, a material having a function as a partition member is used. Furthermore, when installing on a slope such as a slope, it is desirable to use a partition material that is as light as possible because the worker hangs down the slope and installs the partition material. The cross-sectional shape of the partition member is various, for example, substantially circular, triangular, square, or polygonal, and is not particularly limited.

As described above, since the partition member 5 or 6 has flexibility, even if the slope has irregularities, the partition member 5 or 6 can be easily moved in the vertical direction with respect to the slope. As a result, at the time of construction, the end of the growing base formed in the base forming part 4 can be squared. That is, the cross section of the growth base can be prevented from being substantially trapezoidal, and a growth base having a design capacity and a design thickness can be formed with respect to the base formation unit 4.

As described above, by using the partition member 5 or 6, the base formation part 4 and the bare ground part 8 are clearly separated, and the material loss at the time of spraying the base is reduced. The end of the base can be squared.

Further, for example, there are irregularities such as a hard rock slope, a slope with large and small gravels, or a natural slope.
Even when it is difficult to finish the slope smoothly, since the partition member 5 or 6 is flexible, when the partition member 5 is installed on the ground, the ground member and the partition member 5 or 6 are brought into close contact with each other. be able to.

The width of the partition member is preferably about several centimeters, and the height of the partition member depends on the thickness of the growth base formed on the base formation part 4 and the thickness of the base formed on the bare ground part 8. Is determined in consideration of the Specifically, the height of the partition member is higher than the height (thickness) of the growth base formed in the base formation part 4. By making the height of the partitioning material higher than the height of the growth base, the partitioning material protrudes from the surface of the growth base after the growth of the growth base, and as a result, seeds and / or flying from the surroundings The litter and the like do not slide down on the slope and are caught by the partition material.

That is, as a result of the seeds flying from the periphery being caught by the partitioning material, natural invasion of plants can be promoted. Similarly, litter and litter can be effectively deposited by the partitioning material, not only preventing the growth base from drying out, but also effectively forming a corroded soil layer. This makes it possible to hasten the natural recovery when the growth base is unfamiliarly created.

For example, the height of the partition member projecting from the surface of the growth base is preferably about 3 to 20 cm. Further, after the formation of the growth base, the bare land 8 is formed with a base made of a material different from the growth base formed in the base formation section 4, such as chips, cut branches, pruned branches, and / or locally generated soil. When installing or laying, if necessary, increase the height of the partitioning material protruding from the surface of the growth base by 20.
It may be centimeters or more.

As described above, when the height of the partition member is higher than the thickness of the growth base formed in the base formation part 4,
The seeds and / or litter falling from the periphery can be effectively captured.

In particular, it is preferable that the partition member is a bag-like material such as a sandbag. When the partitioning material is a bag-like material such as a sandbag, for example, the bag-like material includes a vegetation material such as a soil improvement material, a topsoil, a chip material, a fertilizer, and / or a plant material such as a seed, thereby partitioning the material. The wood itself can also create a state in which plants can grow and germinate, and the slope can be greened along with the greening by the growth base created in the base creation section.

When a material other than a material capable of growing plants, such as a sandbag, is used for the partition material, the partition material will remain for a long time after the construction, and the base building portion will be sufficiently greened. In the meantime, the partitioning material becomes very noticeable. Therefore, by setting the partitioning material in a state in which the plants can germinate and grow, the partitioning material can be made inconspicuous at an early stage.

In the method of creating a growth base non-facially on the slope 1, generally, in the base formation section 4 where the growth base has been formed, primary greening is carried out by germinating and growing the introduced plant, and the bare land 8 is formed. Promotes secondary greening by plants that naturally invade the sea. At this time, when at least one of vegetation material such as soil improvement material, topsoil, chipping material, and fertilizer and / or plant material such as seed is mixed with the partitioning material, primary revegetation by the introduced plant and secondary seeding by seeds flying from the surroundings are performed. Secondary greening can be encouraged.

As the soil improving material to be contained in the partitioning material, for example, besides organic materials such as bark compost and various composts, inorganic materials such as zeolite and vermiculite can be used. In addition, various types of soil improvement, including crushed shells that correct acidic soil, neutralizing materials such as porous concrete, various soil improvement materials that are effective in retaining fertilizer nutrients, and water retention materials such as polymer absorbent polymers that retain moisture. Materials having an effect can be used.

As the topsoil, for example, locally generated soil and the like can be used. In particular, the use of locally generated topsoil including latent seeds (buried seeds) is suitable.

As the chip material, a locally generated material such as a root extraction material or a logging material, a raw chip obtained by pulverizing construction waste material, or a composted material thereof can be used.

As the fertilizer to be contained in the partitioning material, not only commercially available chemical fertilizers but also all materials having fertilizer components can be used. When a growth base is formed non-facially on the slope 1, a slow-release fertilizer having a long fertilizing effect is preferable because of the time required for greening.

As a plant material such as a seed to be contained in the partitioning material, a vegetative propagation material such as a bulb, a tuber or a root system may be used in addition to a seed for primary greening.

Each of the above-mentioned materials may be individually included in the partition material, or a plurality of the respective materials may be included in the partition material as a base material.

In addition, the main material of the partition member may be a poorly permeable material or an impermeable material. When trying to create a growth base on the slope 1 which is bare ground,
It is necessary to maintain the water retention of the growth base, which is easier to dry than the flat construction. In a well-ventilated environment such as the slope 1, when the main material of the partitioning material is a poorly permeable material or a water-impermeable material, the growth base surrounded by the partitioning material is prevented from drying and promotes water retention. Water resources such as rainwater can be effectively utilized. And by making the main material of the partition material a poorly permeable material or a water-impermeable material, dew condensation is promoted between the partition material and the growth base, and the growth of the introduced trees is promoted.

Instead of using the main material of the partition material as a water-impermeable material or a water-impermeable material, the surface of the partition material may be coated with a resin or the like having a water-impermeable or water-impermeable property. The partition material may be provided with poor water permeability or water impermeability by, for example, applying paint or the like, or attaching a material having poor water permeability or water impermeability to the surface of the partition material.

As described above, if the partitioning member is made of a material that is hardly permeable or water-impermeable, the water retention of the base forming section 4 can be improved.

Further, a part of the above-mentioned poorly water-permeable or water-impermeable partition material may be made water-permeable. For example, when the partition material is installed on the slope 1, when the valley side portion is made to be poorly permeable or impermeable and the mountain side portion is made permeable,
Rain water such as rain can be retained inside the partition material,
As a result, it is possible to effectively prevent the base and the like formed on the base forming part 4 and / or the bare land part 8 from drying.

In the example shown in FIG. 1, the partition member 5 is made of water-impermeable or impervious on its upper surface, valley side surface, and bottom surface in contact with the ground. The side surface is made of water-impermeable or impervious, and in the partition material, if at least the mountain side is made permeable, rainwater such as rainfall will be retained inside the partition material, and the base formation portion 4 Drying of the newly formed growth base can be prevented. Further, even when a base such as a chip is formed on the bare land portion 8, drying of the base can be prevented.

Further, after laying a net such as a wire net or a resin net on a bare land to be greened, such as a slope, a slope, or a degraded land, the above-described partition member may be installed. . After laying the mesh, install the partition material,
For example, there are various advantages such as stabilization of a slope surface layer, suppression of frozen soil and freezing, improvement of adhesion of a growth base, and improvement of trapping of naturally invading seeds.

Referring to FIG. 1 again, an example of the greening basic construction method using the above-mentioned partition member will be described. First, a net 3 such as a wire net is laid (attached) on the surface of the slope 1. When the net 3 is laid on the slope 1, for example, an anchor pin 2 is used, and the net 3 is fixed to the slope 1 by the anchor pin 2.

After laying the reticulated body 3, in the base formation section 4 for forming the growth base in a non-planar manner, the base 3 is aligned with the boundary between the base formation section 4 and the bare ground section 5 so as to be flexible. The partition member 5 or 6 is installed. When the partition member 5 or 6 is installed, for example, an anchor pin 7 is used, and the partition member 5 or 6 is used.
Or 6 is fixed to the slope 1. In order to fix the partition member, there is a method of fixing the partition member to a pre-installed mesh body 3 by using a binding wire in addition to the anchor pin, and if the partition member can be fixed to the extent that the partition member does not move at the time of spraying, particularly, The technique is not limited. In the illustrated example, the partition members 5 and 6 have a rectangular cross section, and the partition member 5 has three surfaces, that is, a top surface, a valley side surface, and a bottom surface, which are hardly water-permeable or water-impermeable. Has two surfaces, the upper surface and the valley side surface, which are poorly permeable or impermeable. The height of the partition member 5 or 6 is higher than the thickness of the growth base 4 a sprayed and constructed on the base formation part 4.

After the partition members 5 and 6 are fixed to the slope 1 as described above, a growth base 4a is formed in the base formation section 4. When creating the growth base 4a, a method of sowing soil or the like is used, and in general, spraying such as vegetation base material spraying is performed. If necessary, a base 8a such as a chip is formed in the bare land portion 8 as described above.

As described above, if necessary, the partitioning material 5 and / or 6 may be added to the soil improving material, the topsoil, the chip material,
Vegetable materials such as fertilizers and / or plant materials such as seeds may be included.

[0055]

As described above, according to the present invention,
When a growth base is formed non-facially on a bare land having irregularities such as a slope, a slope, or a degraded land, the bare land can be easily partitioned, and thereby, the base formation part for forming the growth base and the bare land can be bare. In addition to being able to clearly distinguish the bare ground portion remaining as the ground, there is an effect that the edge of the growth base can be squared. As a result, there is an effect that the construction management and the performance inspection can be facilitated, and the material loss at the time of spraying the substrate can be reduced when growing the substrate.

In addition, since the height of the partitioning material is higher than the surface of the growth base, not only the germination and growth of the introduced species can be promoted, but also seeds flying from the periphery can be efficiently captured. There is an effect that early recovery of vegetation and soil environment can be promoted. That is, there is an effect that natural recovery can be hastened.

Further, since the partition material has a substantially water retaining function, there is also an effect that drying of a growth base or the like can be prevented. Furthermore, if a material capable of growing and germinating a plant is used as the partition material, the partition material can have a function as a plant growth base. As a result, vegetation recovery can be promoted without noticeable partitioning material after construction.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a greening foundation method according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slope 2,7 Anchor pin 3 Reticulated body 4 Base formation part 4a Growth base 5,6 Partition material 8 Bare ground part 8a Base formed in bare ground part

Continued on the front page (72) Inventor Shinichi Yuguchi 5-11-3 Shimbashi, Minato-ku, Tokyo Toko Construction Co., Ltd. F-term (reference) 2B022 AB02 BA01 BA02 BA14 BA21 BB05 CA02 DA19 2D044 DA23 DB01

Claims (6)

[Claims] Claims: 1. A partitioning material used for non-planar formation of a growth base in a bare land, and separating a base formation part where the growth base is formed and a bare land part remaining as a bare land. A partition member having flexibility. 2. The partition member according to claim 1, wherein the height is higher than the thickness of the growth base formed in the base formation part. 3. The method according to claim 1, wherein the material is a bag-like material.
Or the partitioning material according to any of 2. 4. The partition material according to claim 1, wherein at least one of a soil improvement material, a topsoil, a chip material, a fertilizer, and a seed is included. 5. A partitioning method according to claim 1, which is a greening foundation method used when a growth base is formed non-faced in a bare land, wherein the growth base is formed before the growth base is formed. A greening foundation method, wherein the timber is installed on the bare ground. 6. A revegetation basic construction method used when a growth base is non-facedly constructed on a bare land, wherein a step of laying a net on the bare land is provided. Installing the divided partition material on the net-like body.