JPH05295714A - Vegetation block - Google Patents

Abstract

PURPOSE:To improve the function and increase the strength by forming a vegetation part by placing porous concrete on the inside of a frame shaped supporting means, sewing seeds on the vegetation part, and laying the vegetation parts on the face of the slope of a river, etc. CONSTITUTION:A vegetation part 5 is formed by laying the porous concrete 7 on the inside of a foundation frame 2 made of common concrete. Then, as for the concrete 7, the cement milk having the less cement quantity is mixed with rough aggregates such as broken stones and the reinforcing members made of vinylon, aramid chips, etc., and a number of cavities 6a for the passing of the root of a plant are formed. In case of plantation for prevention for disaster on the surface of slope of a river, seeds are sewn in the vegetation part 5, and sprouted. Accordingly, the flow-out of the plantation part due to wind and rain can be prevented, and plants can be grown favorably, and since the surface state free of unevenness can be maintained for a long period, easy walking of persons on the plantation part is permitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetation block suitable for disaster prevention such as preventing soil on the slope of a river from flowing out due to wind and rain.

[0002]

2. Description of the Related Art Conventionally, in order to prevent soil runoff on river slopes, concrete blocks have covered the entire slope that should be prevented from soil runoff. There was a strong request to improve the landscape. Therefore, as a method of greening the slope, a plant is grown from the gap between the concrete blocks, or a sandbag is packed in the frame with the concrete block as a frame to grow the plant in the sandbag.

[0003]

However, in this case, the vegetation only in the gaps between the concrete blocks was insufficient for the greening of the slope. Moreover, if only the frame is packed with sandbags in the concrete block, since the sandbags are directly exposed to wind and rain or sunlight, water and soil in the sandbags easily flow out,
Not only the water and soil necessary for vegetation are not secured in the soil, but also the soil in the sandbag hangs down along the slope of the slope, resulting in large irregularities on the surface of the vegetated slope, which may lead to walking or vehicles. It was inconvenient to pass.

In view of the above circumstances, an object of the present invention is to provide a vegetation block in which water and soil required for vegetation are sufficiently secured and which is easy for walking and vehicles to pass.

[0005]

That is, the first of the present invention
Of the invention comprises a vegetation part (5), frame-shaped supporting means (2) is formed so as to surround the vegetation part, and porous concrete (7) is cast on the vegetation part. ..

A second aspect of the present invention is the first aspect of the invention, wherein the vegetation portion is provided with a reinforcing means (10).

Further, a third aspect of the present invention is the same as the second aspect, in which the water retaining means (11a, 1a, 1a) is added to the reinforcing means.
2) is provided.

The numbers in parentheses are for convenience of showing the corresponding elements in the drawings, and the present description is not limited to the description in the drawings. The same applies to the column of "action" below.

[0009]

With the above-mentioned structure, the first aspect of the present invention functions to secure moisture in the porous concrete (7) cast in the vegetation part (5). In addition, the porous concrete (7) acts as the soil required for vegetation. Further, the porous concrete (7) cast in the vegetation part (5) acts so as to maintain a predetermined shape. The second aspect of the present invention operates so that the reinforcing means (10) reinforces the strength of the porous concrete (7) cast in the vegetation part (5). Furthermore, in the third aspect of the present invention, the water retention means (11a, 12) acts so as to reinforce the water retention capacity of the vegetation part (5).

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an embodiment of a vegetation block according to the present invention, FIG. 2 is a side view of the vegetation block shown in FIG. 1, and FIG. 3 is a vegetation block shown in FIG. FIG. 4 is a schematic view, FIG. 4 is a perspective view showing another example of the vegetation block according to the present invention, and FIG. 5 is a view showing a reinforcing member used in the vegetation block shown in FIG.

As shown in FIGS. 1 and 2, the vegetation block 1 according to the present invention has a length L of ordinary concrete,
It has a rectangular flat plate-shaped base frame 2 having a width W and a thickness T,
A vegetation part 5 is formed in the base frame 2. Vegetation part 5
A porous porous concrete 7 is cast on the surface, and the surface 5a of the vegetation part 5 on which the porous concrete 7 is cast forms a smooth predetermined shape. by the way,
Porous concrete 7 mixes cement milk with a small amount of cement with aggregate 6 composed of coarse aggregate such as crushed stone having a particle size of 10 to 20 mm and reinforcing material such as vinylon and aramid chop having a length of 1 to 3 cm. A large number of voids 6a are formed between the aggregates 6, and the aggregates 6 are formed to be porous enough to allow the roots of plants to pass through. Also, its strength is lower than that of ordinary concrete. Therefore, by pouring the porous concrete 7 over the entire vegetation part 5 in the base frame 2, the vegetation part is porous enough to allow the roots of the plant to pass while being supported by the base frame 2 having normal strength. 5 is formed.

Since the present invention has the above-mentioned structure, when vegetation is carried out on the slope of a river for disaster prevention, first, seeds are sprinkled and sprouted on the porous concrete 7 of the vegetation part 5 of the vegetation block 1. That is, the seeds planted on the vegetation part 5 are
Enters the void 6a of the porous concrete 7, and
Since water, fertilizer, etc. sprayed on the vegetation part 5 also enter and are stored in the voids 6a, the seeds that enter the voids 6a can sufficiently obtain the water and fertilizers stored in these voids 6a,
The porous concrete 7 of the vegetation part 5 can be used as soil for good germination.

Then, when the seeds sown on the vegetation part 5 germinate, next, on the slope 40a to be vegetated, as shown in FIG. 3, a coconut husk sheet containing a water-absorbing polymer and fertilizer, a thickness of 20 to 30 mm. The soil exudation preventive mat 9 is spread, and the vegetation block 1 having the germinated plant is laid on the soil exudation preventive mat 9. Then, water such as rainwater is stored in the void 6a of the vegetation part 5 of the vegetation block 1. However, since the vegetation part 5 is formed of porous concrete 7 having a predetermined strength, the porous concrete 7 acting as soil does not flow out due to wind and rain, and the water stored in the voids 6a is Since water is retained without being directly exposed to wind and rain, sunlight, etc., the plant 30 germinated in the vegetation part 5 can sufficiently obtain the water stored in these voids 6a on the basis of reliable soil, which is favorable. Grow up. Further, the porous concrete 7 is porous enough to allow the roots of the plant to pass through, and at the initial growth stage of the germinated plant, the roots are not sufficiently stretched in the porous concrete 7, but the vegetation block 1 is laid and the soil is sucked out. Since it is laid on the prevention mat 9, the earth and sand on the slope 40a is blocked by the laid soil suction prevention mat 9, and the earth and sand on the slope 40a does not flow out. Furthermore, as the plant 30 grows, the plant 30
Since the roots 31 of the roots enter the voids 6a of the vegetation part 5, the voids 6
The a is blocked, and does not flow out even if the plant 30 is exposed to wind and rain, etc., and firmly roots. Furthermore, the root 31 of the plant 30 has a slope 4
When the ground 40 of 0a is reached, the vegetation block 1 has a slope 40
It will be securely fixed to a. Further, by forming the surface 5a of the porous concrete 7 cast in the vegetation part 5 into a predetermined shape with small unevenness, the slope of the slope can be
Since it is not deformed by wind and rain, the surface 5a having a predetermined shape with small irregularities can be held for a long period of time, and it is possible to ensure the ease of walking and the passage of vehicles.

Further, since the porous concrete 7 having a low strength cast in the vegetation part 5 is formed in the base frame 2 made of ordinary concrete having a normal strength, the porous concrete 7 of the vegetation part 5 is formed into the base frame 2. Since it is supported by, the handling such as transportation and laying becomes easy. Further, by laying the soil exudation prevention mat 9 containing a water-absorbing polymer and fertilizer on the slope 40a, the voids 6 of the vegetation block 1 are
Since water and fertilizer can be stored even in the range where the root 31 of the plant 30 other than a grows, the plant 30 can further obtain the water and fertilizer stored in the soil exudation prevention mat 9 sufficiently, which is good. To grow up.

In the above embodiment, the vegetation part 5 was formed only from porous concrete, but if it is necessary to improve the strength and water retention capacity of the vegetation part 5, as shown in FIG. You may put a reinforcing material in the part. That is, as shown in FIG. 4, another vegetation block 1A has a rectangular flat plate-shaped base frame 2A made of normal concrete and having a length L ', a width W', and a thickness T '. In the inner vegetation part 5A, a lattice-shaped reinforcing member 10 is provided so that its end is embedded in the base frame 2A. As shown in FIG. 5, the reinforcing member 10 has a plurality of braid-like nets 11 made of a lightweight and high-strength fiber material such as aramid and vinylon, which are braid-like nets 11. Are crossed and combined in a grid pattern. Each braided net 11 is provided with a plurality of bag-shaped water retaining portions 11a, each of which forms a part of the braided net 11 into a bag shape, and the water retaining portion 11a is filled with a large number of water-absorbing polymers 12. Has been done. The vegetation section 5A
In addition, the porous concrete 7 including the aggregate 6 is added to the reinforcing member 1
0 is embedded and the porous concrete is connected to the reinforcing member 10. In addition, the surface 5Aa of the vegetation part 5A in which the water retaining part 11a is formed in the vegetation part 5A together with a large number of voids 6a and the porous concrete 7 is cast is
It has a smooth predetermined shape.

Therefore, the vegetation part 5A
The strength of the porous concrete 7 can be increased. Further, by forming the water retaining portion 11a in the reinforcing member 10, water can be stored not only in the voids 6a of the porous concrete 7 of the vegetation portion 5A but also in the water absorbing polymer 12 of the water retaining portion 11a. The water retention capacity of 5A can be further increased.

In the above embodiment, the reinforcing member 1
Although the water retaining portion 11a is formed at 0, it is needless to say that the water retaining portion 11a may not be provided if the water retaining ability is satisfied only by the void 6a.

In the above-mentioned embodiment, the aggregate 6 is 10
Although coarse aggregate such as crushed stone of ~ 20 mm is used, porous concrete 7 does not require high strength, and it is sufficient if it can be formed into a porosity that allows roots of plants to grow. For example, aggregate is about 10 to 20 mm. Light weight aggregates such as pumice having a particle size of 1, calcined clay, and slag may be used, and the use of lightweight aggregates has the additional advantage of reducing the weight of the porous concrete portion.
In addition, as the aggregate, construction waste generated when a building or the like is demolished may be crushed to a particle size of 10 to 20 mm and used. If construction waste is used, the construction waste is crushed. This makes it easy to recycle waste materials and adds the advantages of environmental protection.

Further, in the above-mentioned embodiment, the fertilizer was sprinkled on the porous concrete 7 or contained in the soil exudation prevention mat 9, but it is sufficient that the fertilizer is supplied to the plant, for example, in the porous concrete 7. May be mixed with a slow-acting solid fertilizer or the like, or the braided net 11 of the reinforcing member 10 or the water-absorbing polymer 12 of the water retaining portion 11a of the braided net 11 may be impregnated with fertilizer, or the water retaining portion 11a may be delayed. A solid fertilizer or the like may be mixed.

[0020]

As described above, the first aspect of the present invention
Of the invention has a vegetation part such as a vegetation part 5 and forms support means such as a frame-shaped base frame 2 surrounding the vegetation part, and porous concrete 7 is cast on the vegetation part. Because I did
Since the vegetation part is formed from porous concrete 7 having a predetermined strength, the porous concrete 7 acting as soil does not flow out due to wind and rain, and the water stored in the voids of the porous concrete 7 is rain and wind. , Because it is kept water without being directly exposed to sunlight, plants that have sprouted in the vegetation part can obtain sufficient moisture stored in these voids on the basis of reliable soil of porous concrete 7, Can grow up. Also,
As the plant grows, the roots of the plant enter the voids of the porous concrete 7 placed in the vegetation part, so that the plant does not flow out even when exposed to wind and rain, etc., and it surely takes root. Furthermore, by forming the surface of the porous concrete 7 cast in the vegetation portion into a predetermined shape with small irregularities, it does not deform due to slope inclination, wind and rain, etc. It can be held for a long time, and can be easily walked and passed by vehicles.

A second aspect of the present invention is the porous structure of the first aspect, wherein the vegetation portion is provided with a reinforcing means such as a reinforcing member 10, so that the reinforcing means is cast in the vegetation portion. By reinforcing the strength of concrete 7,
It is possible to withstand running of a heavy vehicle, and it is possible to form a large-area vegetation part.

Furthermore, the third aspect of the present invention is the second aspect of the present invention, wherein the reinforcing means is provided with water retaining means such as the water retaining portion 11a and the water absorbing polymer 12, so that the water retaining means is the vegetation portion. By strengthening the water retention capacity, vegetation can be satisfactorily grown even in areas and periods with low rainfall.
Further, it is possible to cope with vegetation of a large amount of plants.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a vegetation block according to the present invention.

FIG. 2 is a side view of the vegetation block shown in FIG.

FIG. 3 is a schematic diagram showing a case where the vegetation block shown in FIG. 1 is vegetated.

FIG. 4 is a perspective view showing another example of a vegetation block according to the present invention.

5 is a diagram showing a reinforcing member used in the vegetation block shown in FIG.

[Explanation of symbols]

 2, 2A ... Supporting means (base frame) 5, 5A ... Vegetation part (vegetation part) 7 ... Porous concrete 10 ... Reinforcing means (reinforcing member) 11a ... Water retention means (water retention part) 12 ... Water retention means (Water-absorbing polymer)

Claims (3)

[Claims] 1. A vegetation block having a vegetation part, forming frame-shaped supporting means surrounding the vegetation part, and pouring porous concrete into the vegetation part. 2. The vegetation block according to claim 1, wherein the vegetation section is provided with a reinforcing means. 3. The vegetation block according to claim 2, wherein the reinforcing means is provided with a water retaining means.