JP2002054144A - Vegetative base concrete and greening method of slope making use thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vegetative base concrete capable of smoothly and surely greening a slope even under the severe condition that it is in an environment such as ground easy to dry or the like. SOLUTION: The vegetative base concrete forms a vegetative base concrete body by hardening excelsoir tips with cement, and since borrow filling holes with bottoms for filling the borrow reaching a specific depth from the upper surface are recessed in the vegetative base concrete body, the borrow filling holes with the bottoms are filled with the borrow containing seeds or planted with young plants for trees, and after the seeds or the young plants in the borrow filling holes with the bottoms are brought up to a certain extent of trees or plants in a place having a good environment different from the slope required to be greened, the vegetative base concrete can be laid on the slope required to be greened, and accordingly, even if the slope required to be greened is an environmentally severe place, since the trees and the plants are brought up to a certain extent, the trees and the plants are not withered on the way, the trees and the plants are surely rooted, and the greening of the slope can be smoothly and surely executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetation substrate for greening a slope and a method for greening a slope using the vegetation substrate.

[0002]

2. Description of the Related Art Conventionally, greening of slopes of river embankments and slopes of trees where trees have been cut down for development has been carried out for the purpose of improving the landscape. And, as a conventional greening method, after laying and fixing a vegetation base material formed by piercing a soil filling hole penetrating between upper and lower surfaces along a slope to be greened, A method of filling seed soil containing seed on a slope in a soil filling hole is employed.

[0003] However, since the soil filling hole of the vegetation base material is drilled in a vertically penetrating state, the vegetation base material is previously laid before the vegetation base material is laid on the slope. It is not possible to fill and hold the soil in the soil filling hole, and fill the soil into the soil filling hole of the vegetation base by laying the vegetation base on the slope. After that I had to do it.

[0004] Therefore, under severe environmental conditions, such as when the slope to be revegetated is a soil that is easy to dry, the soil containing seeds is filled in the soil filling hole of the vegetation base material, and the seeds are removed. It is difficult to germinate and grow into plants, and the survival rate of plants on slopes under such severe environmental conditions is low, making it difficult to replant slopes reliably. there were.

[0005]

SUMMARY OF THE INVENTION The present invention provides a vegetation base material that can smoothly and surely revegetate a slope even under severe environmental conditions such as a ground that is easily dried.

[0006]

The vegetation base material according to claim 1 forms a vegetation base body by solidifying a wood wool chip with cement, and reaches a predetermined depth from the upper surface of the vegetation base body. Characterized in that it is provided with a bottomed soil filling hole for filling the soil.

The vegetation base material according to claim 2 is the vegetation base material according to claim 1, wherein the outer peripheral portion of the vegetation base material is made dense to prevent the evaporation of water contained in the vegetation base material. It is characterized by doing.

The vegetation base material according to claim 3 is the vegetation base material according to claim 1 or 2, wherein the bottomed soil filling hole faces upward from a vertical direction with respect to a slope to be greened. Characterized in that it is an inclined hole directed to

The vegetation base material according to claim 4 is the vegetation base material according to any one of claims 1 to 3, wherein the bottomed soil filling hole is a method for greening the vegetation base material. It is a vertical hole that is oriented in the vertical direction when laid on a surface.

[0010] According to a fifth aspect of the present invention, there is provided a method for greening a slope, comprising: a step of filling a bottomed soil filling hole reaching a predetermined depth from an upper surface of a vegetation base material formed by cementing a wool chip with cement. Vegetation that has grown to a predetermined size is vegetated,
The vegetation base material is laid and fixed on a slope to be greened.

According to a sixth aspect of the present invention, in the method of greening a slope according to the fifth aspect, when the vegetation base material is laid on the slope to be greened, the vegetation base material is removed. It is characterized by laying and fixing the bottomed soil filling hole recessed in the vegetation base material above the slope so as to be higher than the vertical direction with respect to the slope.

According to a seventh aspect of the present invention, there is provided a method for greening a slope according to the fifth or sixth aspect, wherein the bottomed soil filling hole recessed in the vegetation base material comprises: The vegetation base material is laid and fixed on the slope in a state where the inclined hole with the inclined bottomed soil is oriented vertically in the inclined hole from the upper open end toward the inner bottom surface. It is characterized by the following.

[0013]

According to the vegetation base material of the present invention, since the soil filling hole is a bottomed hole, before laying the vegetation base material on the slope to be greened, the soil filling hole is required beforehand. Can be filled with seed soil or seedlings such as trees can be planted and grown in advance in an environment-friendly place until they become plants of a predetermined size.

Therefore, even when the vegetation base material is laid on a slope having a severe environment such as sandy ground, the vegetation in the bottomed soil filling hole of the vegetation base material has grown to a predetermined size. , It has a certain vitality and grows smoothly, so that the slope can be greened smoothly and reliably.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One example of a vegetation base material of the present invention will be described with reference to the drawings. The vegetation base 1 of the vegetation base A is
As shown in FIGS. 1 and 2, a plurality of rectangular vegetation base elements 1a, 1a,...
Are stacked and integrated in the vertical direction to form a substantially cubic shape.

The vegetation base elements 1a are integrated by a binder. As the binder,
For example, an acrylic polymer, a vinyl acetate polymer, or a copolymer thereof may be used. A binder containing peat mose and vermiculite in an amount of 70% by weight or less is preferable. From the viewpoint that the hardness is reduced and the rooting of the vegetation is not hindered, a binder containing 40 to 50% by weight of peat moose and vermiculite in the polymer is more preferable. The mixing weight ratio of peat moose to vermiculite is preferably 1: 3 to 3: 1, and more preferably 1: 1. Specifically, the binder is sold under the trade names “Nacrylic A-4100” and “Nacrylic 125-4280” by NSC Japan, Ltd.

The vegetation base element 1a is made of a wood material having a thickness of 1 to 3 mm and a width of 5 to 150 m so that the vegetation base element 1a is easily broken down and decomposed.
m, preferably formed from wood wool chips 11 sliced to a length of 50 to 500 mm, and a thickness of 1.5 to 2 m
More preferably, it is formed from a wood wool chip 11 sliced into a m, a width of 20 to 50 mm and a length of 100 to 300 mm.

If the thickness of the vegetation base material 1 is large, the water in the vegetation base material 1 evaporates from the side surface of the vegetation base material 1 to the seeds or seedlings in the soil. If the soil is thin, the amount of soil to be filled in the bottomed soil filling hole 12 of the vegetation base material 1 is reduced, and the amount of seeds contained in the soil is also reduced. Since the greening of the slope A may become insufficient, the thickness of the vegetation base element 1a is preferably adjusted to be 2 to 10 times, preferably 4 to 8 times. It is more preferable to adjust.

Further, as shown in FIGS. 1 and 2, the vegetation base body 1 is provided with a bottomed soil filling hole 12 reaching a predetermined depth from the center of the upper surface thereof, In particular,
A bottomed soil filling hole that reaches the lower surface of the vegetation base element 1a located second from the top from the center of the upper surface of the uppermost vegetation base element 1a and has the upper surface of the lowermost vegetation base element 1a as the bottom surface. The bottomed soil filling hole 12 is filled with a soil E containing seeds or a seedling such as a tree is planted.

The bottomed soil filling hole 12 is formed in a cylindrical shape inclined at a predetermined angle from the vertical surface in the thickness direction of the vegetation base body 1 from the upper open end toward the inner bottom surface. Is formed. When the vegetation base material A is laid on the slope B to be greened, as shown in FIG. 2, the bottomed soil filling hole 12 is oriented vertically so that the vegetation base material 1 It is preferable that the above-mentioned inclination with respect to the thickness direction is set.

More specifically, as shown in FIG. 3, the angle formed between the center line Y ₁ of the bottomed soil filling hole 12 and the plane Y ₂ perpendicular to the upper and lower surfaces of the vegetation base material main body 1. It is preferable to form the bottomed soil filling hole 12 so that α is 30 to 60 °, and it is more preferable to form the bottomed soil filling hole 12 so that α is 40 to 50 °.

As described above, in the state where the vegetation base material 1 is disposed on the slope B, the bottomed soil filling hole 12 of the vegetation base material 1 is perpendicular to the slope B. Since the inclined hole is directed upward from the direction, the growth direction of the vegetation grown from the bottomed soil filling hole 12 and the vertical direction with respect to the horizontal direction are substantially in a state, and the vegetation is It grows smoothly and can complete the greening of the slope B in a short period of time.

In particular, a slope B on which the vegetation base material A is to be greened
When the vegetation base is formed, the bottomed soil filling hole 12 is formed as a vertical hole oriented in the vertical direction, and the direction in which the vertical hole is recessed and the direction in which the vegetation grows match. Material A
Can be laid on the slope B without changing the growth direction of the vegetation before and after laying the vegetation on the slope B. Even after laying on the surface B, the vegetation grows smoothly without changing the growth direction of the vegetation in the bottomed soil filling hole 12 of the vegetation base material A, and the roots are smoothly and reliably rooted on the slope B. The greening of the slope B can be completed in a short time.

The opening area of the bottomed soil filling hole 12 may be appropriately adjusted. Specifically, when the bottomed soil filling hole 12 has an inclined cylindrical shape, The length of one side of the vegetation substrate 1 is preferably 30 to 70%,
~ 70% is more preferred.

This is because if the diameter of the bottomed soil filling hole 12 is large, the mechanical strength of the vegetation base material 1 may be reduced and the vegetation base material A may be damaged during handling. If the size is small, the volume of the bottomed soil filling hole 12 occupying the vegetation base material main body 1 becomes small, and plants or plants growing from seeds or seedlings in the soil filled in the bottomed soil soil filling hole 12 are removed. It takes a long time for the vegetation base material 1 to be rooted in the vegetation base material 1 and to disintegrate and decompose the vegetation base material 1, or for vegetation with weak rooting power, the vegetation base material 1 This is because there is a problem that growth is suppressed because it cannot be rooted inside, and furthermore, the survival rate on the slope B may be reduced by penetrating the bottom surface of the vegetation base material 1.

The gap between the wool chips 11 in the outer peripheral portion of the vegetative base material 1 is filled by spraying a binder to the outer peripheral portion of the vegetative base material 1 to thereby fill the vegetative base material 1.
Of the vegetation base material 1 to prevent water contained in the vegetation base material 1 from evaporating to the outside, and to fill the bottomed soil filling hole.
The growth of vegetation within 12 may be promoted.

Further, by making the color of the vegetation base material 1 white, it is possible to suppress a rise in temperature due to the irradiation of the vegetation base material 1 with sunlight, and to reduce the moisture contained in the vegetation base material 1 to the outside. Transpiration may be prevented to promote the growth of vegetation in the bottomed soil filling hole 12.

Next, how to use the vegetation base material A will be described. First, a concave portion in which the vegetation base material A is entirely or buried in a lower third or more on a slope B to be greened.
A plurality of B1s are recessed.

The vegetation base material A in which vegetation has been grown to a predetermined size in the bottomed soil filling hole 12 is placed in advance with respect to the slope B. The vegetation base material 1 is placed in the recess B1 so that the bottomed soil filling hole 12 is oriented vertically with respect to the horizontal plane, so that the vegetation base material 1 is oriented upward from the vertical direction. By arranging the whole or at least one-third of the lower part in a buried state, a plurality of vegetation base materials 1 were laid down at predetermined intervals in the vertical and horizontal directions along the slope B. Laying in the state.

As described above, the vegetation base material A is placed in the recess B1
The vegetation substrate 1 is laid on the slope B in a state where the whole or lower third is buried therein.
The water in the vegetation base material 1 can be prevented from evaporating from the side surface of the vegetation base material 1, so that the vegetation in the bottomed soil filling hole 11 of the vegetation base material 1 can be grown smoothly and reliably. The greening of the surface B can be ensured.

Then, as shown in FIG. 2, if necessary, a portion of the vegetation base material A other than the bottomed soil filling hole 12 may include:
The vegetation base material A is pierced from the upper surface of the vegetation base material 1 until the wedge C formed from the slow-acting fertilizer in which the fertilizer component is gradually eluted by the rainwater is pierced into the slope surface B.
Securely fix on top.

Thus, the vegetation base material A is replaced with the slope B
When laying the vegetation base material on the vegetation base material A, a concave part B1 is formed on the slope B, the vegetation base material 1 is laid in the concave part B1, and a wedge C is driven into the vegetation base material A as necessary. And the vegetation base material A is removed from the slope B in a short time.
Can be laid on top.

Further, the bottomed soil filling hole of the vegetation base material A.
The vegetation that has grown from 12 is grown on a predetermined size before being placed on the slope B.
Can grow with a strong vitality even under severe conditions such as an arid land, and the slope B can be smoothly and reliably greened.

In the state where the vegetation base material A is disposed on the slope B, the soil filling hole 12 of the vegetation base material A is directed upward from the vertical direction with respect to the slope B. Because of the inclined hole, the growth direction of the vegetation grown from the inside of the bottomed soil filling hole 12 at another location is substantially coincident with the vertical direction with respect to the horizontal direction, and the vegetation is Even after laying the base material A on the slope B, it grows smoothly with almost no change in the growth direction and takes root in the slope B in a short period of time to ensure the greening of the slope B Can be.

In particular, when the vegetation base material A is laid on the slope B with the inclined soil filling hole 12 directed vertically, the vegetation base material A is placed on the slope. Even after laying the vegetation base material A on the slope B, the growth direction of the vegetation previously grown in the soil filling hole 12 and the vertical direction with respect to the horizontal direction can be matched. Even after being laid and fixed on the top, the above-mentioned vegetation can be grown very smoothly without changing its growth direction, and the slope B can be surely greened.

Further, a wedge C made of a slow-acting fertilizer is driven into the vegetation base material A, and the fertilizer eluted from the wedge C by rainwater or the like spreads over the entire vegetation base material A. Therefore, the vegetation grown from the soil filling hole 12 of the vegetation base material A actively roots toward the fertilizer to promote the collapse and decomposition of the vegetation base material A and to the slope B. And the greening of the slope B can be surely performed in a short period of time.

In the vegetation base material A, a case was described in which the vegetation base body 1 was formed by stacking and integrating a plurality of vegetation base elements 1a, 1a,. As shown in FIG. 4, the vegetation base element 1a is formed to have a thickness similar to that of the vegetation base body 1 and one vegetation base element 1a forms the vegetation base body 1. Is also good.

[0038]

According to the vegetation base material of the present invention, the vegetation base material is formed by solidifying the wood wool chips with cement, and the vegetation base material is provided with the soil that reaches a predetermined depth from the upper surface. Since the bottomed soil filling hole for filling is characterized by being recessed, the bottomed soil filling hole should be filled with soil containing seeds or planted with seedlings such as trees and greened. After growing the seeds or seedlings in the bottomed soil filling hole to a plant of a certain size in a place with a good environment different from the slope, lay the vegetation base material on the slope to be greened. Therefore, even if the slope to be greened is an environmentally harsh place, the vegetation grows to a certain size, so it has a certain vitality and does not wither in the middle. The plants are firmly rooted on the above slopes, and the greening of the slopes is smooth. It can be carried out and reliably.

Further, as described above, the vegetation base material can be carried to the site in a state where the vegetation has grown to some extent in the bottomed soil filling hole of the vegetation base material. Only the work of laying the vegetation base material on the top is sufficient, so that the work of laying the vegetation base material on site can be shortened.

The vegetation base material according to the second aspect is the vegetation base material according to the first aspect, in which the outer peripheral portion of the vegetation base material is made dense to prevent evaporation of water contained in the vegetation base material. Therefore, it is possible to prevent moisture in the vegetation base material from evaporating to the outside of the vegetation base material. Even in severe places, the water in the vegetation base material is securely retained to ensure the growth of vegetation in the bottomed soil filling hole of the vegetation base material, and to ensure the greening of the slope. Can be.

The vegetation base material according to claim 3 is the vegetation base material according to claim 1 or 2, wherein the bottomed soil filling hole is directed upward from a direction perpendicular to a slope to be greened. Since it is characterized by inclined holes directed to the, the vegetation base material even after laying on the slope, the growth direction and the vertical direction to the horizontal direction of the vegetation grown from the bottomed soil filling hole. , And the vegetation grows smoothly, and the greening of the slope can be completed in a short period of time.

The vegetation base material according to claim 4 is the vegetation base material according to any one of claims 1 to 3, wherein the bottomed soil filling hole is a method for greening the vegetation base material. Since it is characterized by being a vertical hole oriented in the vertical direction when laid on the surface, the growth direction of the vegetation grown from inside the bottomed soil filling hole and the vertical direction with respect to the horizontal direction are in a state in which The vegetation grows more smoothly and can complete the slope greening in a short time.

According to a fifth aspect of the present invention, there is provided a method for revegetating a slope having a bottom-filled soil filling hole reaching a predetermined depth from an upper surface of a vegetation base material formed by cementing wood wool chips with cement. Vegetation that has grown to a predetermined size is vegetated,
Since this vegetation base material is laid and fixed on the slope to be greened, unlike plants grown from seeds, plants and plants are grown to a predetermined size and have a predetermined vitality. Therefore, even if the slope to be greened is an environmentally harsh place such as sandy land, it does not die on the way, and the above-mentioned vegetation is firmly rooted on the slope,
Greening of the slope can be performed smoothly and reliably.

According to a sixth aspect of the present invention, there is provided a method for greening a slope according to the fifth aspect, wherein the bottomed soil filling hole is laid on the slope where the vegetation base material is to be greened. At this time, the vegetation base material should be laid and fixed on the slope with the bottomed soil filling hole recessed in the vegetation base facing upward from the vertical direction with respect to the slope. Because of this feature, the growth direction of the vegetation previously vegetated from the bottomed soil filling hole of the vegetation base material hardly changes even after the vegetation base material is laid on the slope.

That is, even after the vegetation base material is laid on the slope, the vegetation vegetated from the soil filling hole of the vegetation base material can be smoothly grown in the same direction without substantially changing its growth direction. The slope can be smoothly and reliably rooted on the slope, and the slope can be smoothly and reliably greened.

According to a seventh aspect of the present invention, there is provided a method for greening a slope according to the fifth or sixth aspect, wherein: The vegetation base material is laid and fixed on the slope in a state where the inclined hole with the inclined bottomed soil is oriented vertically in the inclined hole from the upper open end toward the inner bottom surface. Because it is characterized by simply laying the vegetation base material on the slope without forming a recess on the slope,
The growth direction of the vegetation grown to a certain size in advance from the bottomed soil filling hole of the vegetation base material matches the vertical direction with respect to the horizontal direction, and the vegetation material before and after laying the vegetation base material on the slope. Can grow in the same direction, so that the vegetation grows very smoothly and firmly and securely roots on the slope, so that the slope can be greened within a short period of time. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a vegetation base material.

FIG. 2 is a schematic longitudinal sectional view showing a state where the vegetation base material of FIG. 1 is laid and fixed on a slope to be greened.

FIG. 3 is a schematic vertical sectional view showing the vegetation base material of FIG.

FIG. 4 is a schematic perspective view showing another example of a vegetation base material.

[Explanation of symbols]

 Reference Signs List 1 Vegetation base material 1a Vegetation base element 11 Wood wool chip 12 Bottom soil filling hole A Vegetation base B Slope C Wedge

Claims (7)

[Claims] 1. A vegetation base material is formed by solidifying a wood wool chip with cement, and a bottomed soil filling hole for filling the vegetation base material with a soil reaching a predetermined depth from an upper surface. A vegetation substrate characterized by being recessed. 2. The vegetation base material according to claim 1, wherein an outer peripheral portion of the vegetation base material is made dense to prevent evaporation of water contained in the vegetation base material. 3. The vegetation base according to claim 1, wherein the bottomed soil filling hole is an inclined hole directed upward from a vertical direction with respect to a slope to be greened. Wood. 4. The bottomed soil filling hole is a vertical hole oriented in a vertical direction when the vegetation base material is laid on a slope to be greened. A vegetation substrate according to claim 1. 5. A vegetation which has grown in advance to a predetermined size is vegetated in a bottomed soil filling hole reaching a predetermined depth from an upper surface of a vegetation base mainly formed by hardening a wool chip with cement. And laying and fixing the vegetation base material on the slope to be greened. 6. When laying a vegetation base material on a slope to be greened, the vegetation base material has a bottomed soil filling hole which is recessed in the vegetation base material and is perpendicular to the slope. The method for greening a slope according to claim 5, wherein the slope is laid and fixed on the slope so as to face upward. 7. The bottomed soil filling hole formed in the vegetation base material is formed as an inclined hole inclined from the upper open end toward the inner bottom surface. The method for greening a slope according to claim 5 or 6, wherein the vegetation base material is laid and fixed on the slope with the holes oriented in the vertical direction.