JP4521709B2 - Slope greening protection method using a soil injection mat - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for protecting a greening of a slope using a soil-filling mat that allows easy introduction of local vegetation.
[0002]
[Prior art]
In order to avoid disrupting the flora around the local area, it is of course desirable to introduce local vegetation. Nets were stretched on the slopes, waiting for seeds flying from surrounding vegetation to introduce local vegetation.
[0003]
[Problems to be solved by the invention]
However, handling local seeds takes a lot of manpower and time, and it takes a long time for seeds to land, germinate and grow, even if they are waiting for flying seeds. However, the vegetation coverage after several months of construction could not be expected to be very high, and the surface erosion and collapse of the slope were likely to occur during this period.
[0004]
The present invention has been made in view of such circumstances, and its purpose is to prevent surface erosion / disintegration of the slope immediately after the construction, and also to bury the seeds of the surrounding vegetation contained in the topsoil. It is possible to secure a high vegetation coverage after several months of construction, and to provide a greening protection method that makes it easier to catch the surrounding vegetation seeds after several months of construction.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, the slope greening protection method according to the present invention includes a bag mat base material into which the soil can be poured, and a region into which topsoil containing at least collected buried seeds is poured at appropriate intervals. And a mating base material by forming a landing waiting area for flying seeds infused with a vegetation base material that does not contain seeds, or a vegetation base material mixed with plant seeds that decline over time . It is characterized in that local vegetation with buried seeds and local vegetation with flying seeds are grown in a well-balanced manner while preventing slope erosion and collapse .
[0006]
In the present invention, a mat base material is installed so as to cover the slope, and at least topsoil is poured into the bag portion of the mat base, and the greening of the slope is achieved by a so-called guest soil infusion mat. According to the greening protection method of the slope, the surface erosion / collapse of the slope is effectively prevented immediately after the mat base material is applied. Moreover, the loss of buried seeds contained in the topsoil is also effectively prevented.
[0007]
In the long run, the seeds in the topsoil germinate and grow, ensuring a high vegetation coverage after several months of construction. Will be prevented.
[0008]
It is important to select the topsoil containing the buried seeds in the area surrounding the greening of the slope as the guest soil, so as not to disturb the flora of the local area, Because of its fast germination and growth, it is possible to include annual grass seeds in the topsoil in order to ensure a high early planting rate, and since it also declines quickly, it inhibits the growth of buried seeds. As a result, the slope is protected by greening by local vegetation.
[0009]
On the other hand, the area into which the seedling-free vegetation base material is injected is the waiting area for landing of flying seeds, where the flying seeds settle and germinate and grow, and the slope is protected by the introduction of local vegetation. Will be.
[0010]
In addition, when a vegetation base material mixed with plant seeds that decline over time is injected instead of the vegetation base material that does not contain the seeds described above, the mixed seeds germinate and grow at the beginning of the construction, so that greening can be done early. In addition to being protected, the plant decays over time, so that the flying seeds settle and germinate and grow in the area. As a result, the slope is protected by the introduction of local vegetation. .
[0011]
Thus, according to the slope protection method of the present invention, it is possible to grow the local vegetation by the buried seeds contained in the topsoil and the local vegetation by the flying seeds in a well-balanced manner. A natural slope protection can be achieved.
In addition, it is desirable for the base fabric of the guest soil injection mat used in the present invention to have a scale that does not leak a large amount of the customer soil to be injected and that allows easy plant sprouting and rooting.
Furthermore, a base fabric configured such that a vegetation region is formed by a highly corrosive thread between grid-like reinforcing bands is optimal.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows the state of greening protection of the slope N by the soil-filling mat 1. In the present invention, the mat base material 3 continuously provided with the bag portions 2 is provided with the bag portions 2 at predetermined intervals. A top soil is injected as the soil 4 (region S), and only the vegetation base material is injected (region H) into the bag portion 2 therebetween.
[0013]
The mat base material 3 is made of synthetic fibers such as polyethylene and nylon so that a large amount of the soil to be injected does not leak out and the plant can be easily sown and rooted. .
Preferably, as shown in FIG. 2, a narrow grid-like reinforcing band 6 is formed by the corrosion-resistant thread 5, and a vegetation region A is formed between the reinforcing bands 6 by the highly corrosive thread 7. As described above, the corrugated sheet 5 having a lateral width of 100 to 200 cm, for example, is continuously knitted by the corrosion-resistant yarn 5 and the highly corrosive yarn 7, and the weave of the mesh sheet 8 is performed. The reinforcing bands 6 of the two net-like sheets 8 are knitted so as to form the bag part 2 continuously in the sheet length direction and to form the inlet 9 for the customer soil 4 at the sheet end part. In addition, the reinforcing bands 6 of the two mesh sheets 8 are knitted so as to be connected at a predetermined interval in the surface direction of the sheet 8 so as to form the narrowed portion 10 in the bag portion 2, Since the mat base material 3 continuously provided with the portion 2 is constituted continuously That.
[0014]
In this embodiment, the width is 1 using a 500 to 1000 denier corrosion resistant yarn 5 made of artificial fibers such as polyester, polyamide, polyethylene, nylon, vinylon, etc., which has excellent environmental resistance and durability for a long period of time. A grid-like reinforcing band 6 of ˜3 cm is formed, and the size of the vegetation region A by the reinforcing band 6 is 7 to 10 cm square.
[0015]
On the other hand, as the highly corrosive yarn 7, natural fibers such as cotton and hemp, which are inferior in environmental resistance and easily corroded at an early stage, and 500 to 1000 deniers of cellulose yarn regenerated fibers such as rayon, acetate and cupra 50 to 80 are arranged at intervals of 7 to 10 cm in the vegetation area A.
[0016]
Next, the greening protection of the slope N by the soil injection mat 1 will be described. First, the mat base material 3 continuously provided with the bag portion 2 is set on the slope N with the continuous direction of the bag portion 2 (the length direction of the sheet) directed to the slope direction of the slope N, In addition, the topsoil S is appropriately mixed with fertilizers, chips of felled trees, and the like into the bag portions 2 (two in this embodiment). Next, vegetation base material H such as peat moss and felled wood chips is injected into the remaining bag portion 2, but at that time, seeds are not mixed, or annual grass such as Italian ryegrass, or decline with time A small amount of perennial grass or wild grass may be mixed as much as possible.
This operation is repeated to cover the slope N to be protected by greening with the soil injection mat 1, and the soil injection mat 1 is fixed with the anchor 11 as necessary.
[0017]
The above-mentioned topsoil S is a surface soil containing buried seeds in the area around the greening of slope N. For example, in addition to fertilizers and soil conditioners, thinned wood, rooted chips, bark, peat moss, perlite, vermiculite, etc. A mixture of vegetation bases having an apparent specific gravity of about 0.1 to 0.5 is also suitably used, and herbaceous seeds blended therein are herbaceous seeds and shrubs of local vegetation collected in the surrounding area. Tree seeds, other herbaceous seeds of foreign species (for example, annual grass seeds with fast germination and growth), etc. are selected and mixed as appropriate.
[0018]
When the topsoil S or the vegetation base material H is injected into the soil, it may take the form of wet injection in which it is kneaded with water and injected with a pump. The mixture is supplied to the stirring tank 13 of the dry spraying machine 12 to sufficiently stir the base material and the herbaceous seed, and the soil 4 obtained by this stirring is pumped to the spraying nozzle 15 through the hose 14, and the inlet 9 The injection port 9 is appropriately closed with a fastener or the like.
[0019]
According to the planting protection method for slope N, the surface soil erosion / collapse of slope N can be prevented immediately after the construction by applying the soil-injected mat 1 on the slope N greening protection surface. In the long run, the embedded seeds contained in the topsoil S germinate and grow, so that a high vegetation coverage after several months of construction is ensured. If annual herbage seeds are selected, early greening will be achieved.
[0020]
Here, as the reticulated sheet 8 constituting the mat base material 3, this is a woven sheet made of the corrosion-resistant yarn 5 and the highly corrosive yarn 7, so that a vegetation region A is formed after several months of construction. Although the highly corrosive yarn 7 is corroded and disappears, the reinforcement strips 6 made of the corrosion-resistant yarn 5 remain in a lattice shape, so that the surface erosion / collapse of the slope N can be effectively prevented continuously. It is done.
[0021]
On the other hand, the bag portion 2 into which only the vegetation base material H is injected becomes a waiting area for landing of the flying seeds. The flying seeds settle here and germinate and grow. Greening protection will be provided by introduction.
[0022]
In addition, when seeds that decay with time are introduced into the vegetation base H, the initial stage of construction is protected by greening by the introduced plant, and when the introduced plant declines, it becomes a waiting area for landing seeds. As the flying seed settles and germinates and grows, the slope N is eventually protected by the introduction of local vegetation.
[0023]
In addition, as for the dimension of the bag part 2 in a sheet | seat length direction, it is desirable that it is at least about 30-50 cm in the state which injected the customer's land 4. That is, if the amount of the soil 4 is small, the amount of water retained is also small, which may cause drying of the soil 4, and thus germination and growth of the introduced seeds are inhibited.
[0024]
For this reason, it is desirable that the size of the bag portion 2 in the soil injection state is 30 to 50 cm or more, but the size of the bag portion 2 in the soil injection state is, for example, 15 cm or 20 cm. Even if it is short, the same customer land 4 may be poured into the adjacent continuous bag portions 2 so that the total amount becomes 30 cm or more.
[0025]
In the above embodiment, the topsoil S is injected into the two bag portions 2 of every two bags, but as shown schematically in FIG. 3, the topsoil S is injected into the two bag portions 2 of every four bags ( 4), or, as schematically shown in FIG. 4, for example, topsoil S is injected so as to exhibit a checkered pattern (also shown with diagonal lines). It is possible to take
[0026]
【The invention's effect】
As described above, according to the present invention, the surface erosion / collapse of the slope is prevented immediately after the construction, and the vegetation coverage rate after several months of construction can be secured high, and the surrounding vegetation seeds are received. In addition, it is possible to provide a method for protecting the greening of the slope by introducing preferable local vegetation, in which prevention of surface erosion / collapse of the slope is continuously performed.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a perspective view showing a state of greening protection of a slope with a soil-filling mat.
FIG. 2 is a partial perspective view of a guest soil injection mat in which a main part is taken out and enlarged.
FIG. 3 is a schematic layout diagram showing different forms of soil injection.
FIG. 4 is a schematic layout diagram showing different forms of soil injection.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 2 ... Bag part, 3 ... Mat base material, 4 ... Soil, 5 ... Corrosion-resistant thread | yarn, 6 ... Reinforcement belt, 7 ... Highly corrosive thread | yarn, 8 ... Reticulated sheet, 9 ... Soil inlet, 10 A narrowing part, A ... Vegetation region, N ... Slope, S ... Topsoil, H ... Vegetation base material.

Claims (1)

A bag mat base material capable of injecting guest soil is installed on the slope, and a region into which topsoil containing buried seeds collected at least at an appropriate interval is injected, and a vegetation base material not including seeds between the regions, or By constructing a landing waiting area for flying seeds infused with vegetation base material mixed with plant seeds that decline over time , the mat base material prevents the surface erosion / disintegration of the slope and prevents the seeds from being buried. A method for protecting the greening of slopes by using a soil-injected mat, characterized by allowing local vegetation to grow in a balanced manner with vegetation and flying seeds .

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