JP2004285683A - Concrete block for greening slope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concrete block for greening a slope, which enables measures for the greening to be taken even on natural ground unsuitable for the growth of a plant, without causing an increase in transportation cost or a deterioration in workability, by enabling a leading space for a root of the plant to be secured even if a thickness dimension of a block body is not increased so much. <P>SOLUTION: This concrete block for the greening the slope is constituted in such a manner that a storage recess 6, which is recessed in a thickness direction from a surface of the block body 9 so as to enable the storage of borrow 5 for vegetation, is formed on the surface side of the block body 2. In the concrete block, a storage hole 7, which communicates with a bottom part of the storage recess 6, is formed in the state of being elongated in the in-plane direction of the block body 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a concrete block for slope greening for greening a slope such as a river embankment or a retaining wall beside a road.
[0002]
[Prior art]
Conventionally, in the revetment work of rivers and the retaining wall work for road or railway construction, the block method of covering and stabilizing the slope with a large number of concrete blocks arranged vertically and horizontally has been adopted. In order to prevent incongruity with the surrounding scenery due to the exposed concrete block as it is, greening measures for rooting plants on the surface of the block have been promoted.
[0003]
One of such greening measures is to use a concrete block in which a storage recess recessed in the thickness direction is formed on the surface of a porous concrete block body so that vegetation soil can be stored. is there. In this case, when a plant is planted in the guest soil stored in the storage recess, the root of the plant passes through the block body made of porous concrete and reaches the ground, so that the block body is integrated with the ground and sloped. (See Patent Document 1).
[0004]
However, as described above, simply forming a storage recess for the soil on the surface of the block body as described above means that if the ground is a gravel layer or an existing concrete structure, the planted soil on the soil can be removed. The roots do not grow well and the plants die relatively early. Therefore, by arranging the soil material layer on the back side of the block body in the thickness direction with respect to the storage recess for vegetation soil, and guiding the roots of the plants planted in the soil to the soil material layer In addition, a concrete block capable of taking a greening measure even for a ground that is not suitable for growing plants has been developed (see Patent Document 2).
[0005]
[Patent Document 1]
JP-A-11-117259 (Claim 1)
[Patent Document 2]
JP-A-11-117334 (Claim 1)
[0006]
[Problems to be solved by the invention]
However, in the above-mentioned conventional concrete block, since the storage concave portion for the soil and the soil material layer are arranged with a gap in the thickness direction, the thickness dimension of the block main body may become large and the weight may become excessive. . For this reason, the conventional concrete block has the drawback that the transportation cost is high, the work of carrying in to the construction site and the work of installing on the slope are difficult, and the workability is deteriorated.
[0007]
The present invention has been made in view of the above circumstances, and it is possible to secure a space for guiding roots of a plant without significantly increasing the thickness dimension of a block main body, thereby causing an increase in transportation cost and a deterioration in workability. Another object of the present invention is to provide a concrete block for slope revegetation, which can take measures against revegetation even for a ground which is not suitable for growing plants.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has taken the following technical measures.
That is, the present invention relates to a slope greening concrete block in which a storage recess recessed in the thickness direction from the surface of the block main body is formed on the surface side of the block main body so as to be able to store the vegetation soil. The storage hole communicating with the bottom of the storage recess is formed to extend in the in-plane direction of the block body.
[0009]
According to the concrete block according to the present invention, since the storage hole communicating with the bottom of the storage recess is formed, the storage hole is filled with soil, water retention material, or the like, thereby guiding the storage hole to the root of the plant. The storage hole can be used as a space, and the storage hole communicates with the bottom of the storage recess and is formed so as to extend in the in-plane direction of the block main body. The thickness dimension does not increase significantly.
For this reason, it is possible to avoid an increase in transport cost and deterioration in workability due to an increase in the thickness dimension of the block body, and to use a storage hole communicating with the storage recess as a space for guiding the root of the plant, thereby increasing the growth of the plant. Greening measures can be effectively implemented even for unsuitable ground.
[0010]
In the present invention, the storage hole may be formed in a state communicating with the bottom of the storage recess and extending in the in-plane direction of the block body, and is not particularly limited to a specific structure. The block main body can be formed in a shape penetrating the block main body from one end surface in the width direction to the other end surface. When the storage hole is formed in such a shape, the shape of the core for forming the storage hole and the mounting structure of the core to the concrete form are simplified, so that the cost of manufacturing the concrete block is reduced. Can be.
The storage hole may be formed in a shape penetrating the block main body from the bottom of the storage recess to one end surface of the block main body, and the storage hole may be formed from the bottom of the storage recess to the back surface of the block main body. It can also be formed in a shape penetrating the block main body across the same and being inclined with respect to the thickness direction of the block main body.
[0011]
In the present invention, the block main body may be made of porous concrete having continuous voids therein or ordinary concrete having no such voids, but the front side is a porous concrete layer and the rear side is a normal concrete layer. It preferably has a two-layer structure. If such a two-layer block main body is adopted, the roots of the plants planted in the soil located on the surface side of the block main body continue to grow into the voids of the porous concrete layer, so that the plants grow more reliably. At the same time, the general strength of the block body can be improved by the ordinary concrete layer on the back side.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a concrete block for slope greening according to a first embodiment of the present invention, and FIG. 2 shows a concrete retaining wall as an example of the construction.
As shown in the figure, a concrete block 1 of the present embodiment comprises a thick plate-shaped block body 2 having a square shape in a plan view, and the block body 2 is made of a square porous concrete and a normal concrete having substantially the same thickness. Are superposed on each other and joined to form a two-layer structure including the porous concrete layer 3 on the front side and the ordinary concrete layer 4 on the back side.
[0013]
A plurality of storage recesses 6 are formed in the surface of the block main body 2 and are recessed in the thickness direction from the surface of the block main body 2 so that the vegetation soil 5 can be stored therein. A total of four storage recesses 6 are provided at the four corners of the block main body 2 and are formed of circular grooves having a depth approximately half the thickness of the block main body 2.
A storage hole 7 communicating with the bottom of the storage recess 6 is formed inside the block main body 2 so as to extend in the in-plane direction of the block main body 2. The storage hole 7 of the present embodiment is formed of a round hole that is formed so as to penetrate the block main body 2 from one end surface in the width direction to the other end surface of the block main body 2 and has a circular cross section and extends straight. Two storage holes 7 are provided in total.
[0014]
Each of the two storage holes 7 is arranged at a plane position passing through the center of the two upper and lower storage recesses 6 adjacent to each other, and the center of the cross section of the storage hole 7 is defined by the porous concrete layer 3 and the ordinary concrete layer 4. It is arranged at a position in the thickness direction at the same depth as the joining surface. Each of the storage holes 7 is set to have a cross-sectional dimension that allows the inside of the storage hole 7 to be filled with a water retention material 8 such as a soil 5 or coconut shell.
In addition, the concrete block 1 of this embodiment can be manufactured by an immediate demolding method of compressing and compacting the stiffened fresh concrete with zero slump while vibrating, and immediately demolding the mold immediately after molding. it can.
[0015]
As shown in FIG. 2, the concrete block 1 according to the above configuration is arranged, for example, vertically and horizontally on a slope (slope) of an existing concrete retaining wall 9 so as to cover the slope. Will be constructed. In the construction example shown in FIG. 2, the water retention material 8 is filled in the storage hole 7 of each block 1, and the plant 10 such as grass is planted in the soil 5 filled in the storage recess 6, thereby reducing the concrete. The slope of the retaining wall 9 is green.
[0016]
As described above, according to the concrete block 1 of the present embodiment, the storage hole 7 communicating with the bottom of the storage recess 6 is filled with the water retention material 8 to use the storage hole 7 as a space for guiding the roots of the plant. Therefore, it is possible to take measures for greening the existing concrete retaining wall 9 that is not suitable for growing the plant 10. Further, since the storage hole 7 is formed so as to communicate with the bottom of the storage recess 6 and extend in the in-plane direction of the block main body 2, even if the storage hole 7 is formed, the thickness of the block main body 2 is reduced. The dimensions do not increase so much, and an increase in the transportation cost of the concrete block 1 and deterioration in workability can be avoided.
[0017]
Further, according to the concrete block 1 of the present embodiment, the storage hole 7 is formed in a shape penetrating the block main body 2 from one end surface in the width direction of the block main body 2 to the other end surface thereof. The core for forming the core 7 and the attachment of the core to the concrete form can be made to have a simple structure, and in this respect, the manufacturing cost of the concrete block 1 can be reduced.
Furthermore, since the concrete block 1 of the present embodiment has a two-layer structure in which the front side is the porous concrete layer 3 and the back side is the ordinary concrete layer 4, the concrete block 1 is planted on the soil 5 located on the front side of the block body 2. The roots of the plant 10 thus obtained continue to enter the voids of the porous concrete layer 3 and continue to grow, whereby the plant 10 grows more reliably and the overall strength of the block body 2 is increased by the ordinary concrete layer 4 on the back side. There is also the advantage that it can be improved.
[0018]
FIG. 3 shows a concrete block for slope greening according to a second embodiment of the present invention.
In the concrete block 1 according to the present embodiment, the three storage recesses 6 are arranged in a row on the upper surface of the block main body 2, and the storage holes 7 are formed in the block main body 2 from the bottom of each of the storage recesses 6. It is formed in a shape penetrating the block main body 2 over the end face.
For this reason, even in the concrete block 1 of the present embodiment, it is not necessary to increase the thickness dimension of the block main body 2 so much in spite of forming the storage hole 7 serving as a space for guiding the root of the plant 10. It is possible to avoid an increase in transportation cost and deterioration in workability.
[0019]
FIG. 4 shows a concrete block for slope greening according to a third embodiment of the present invention.
In the concrete block 1 according to the present embodiment, the storage recess 6 and the storage hole 7 are continuously connected so as to form one continuous cylindrical through-hole 11, and the cylindrical through-hole 11 is It is formed in a shape penetrating the block main body 2 from the front surface to the back surface of the block main body 2 in a state inclined with respect to the thickness direction of the block main body 2.
[0020]
Therefore, assuming that a portion of the through hole 11 having a certain depth on the front surface side is the storage recess 6, the storage hole 7 of the present embodiment extends from the bottom of the storage recess 6 to the back surface of the block body 2. 2 and is formed in a shape inclined with respect to the thickness direction of the block main body 2. The opening on the back side of the through hole 11 is closed by a back cover member 12 made of a synthetic resin sheet or the like.
Then, even in the case of the present embodiment employing the storage hole 7 inclined as described above, the storage hole 7 serving as a space for guiding the root of the plant 10 is formed without increasing the thickness of the block body 2 so much. Therefore, it is possible to avoid an increase in transportation cost and a deterioration in workability.
[0021]
Further, according to the concrete block 1 of the present embodiment, since the through-holes 11 forming the storage recesses 6 and the storage holes 7 are inclined with respect to the thickness direction of the block main body 2, FIG. Thus, when the block 1 is installed on a steep slope, the storage recess 6 is in a substantially vertical state, and therefore, the soil 5 filled in the storage recess 6 and the plant 10 planted therein flow out. There is an advantage that it becomes difficult.
Further, according to the concrete block 1 of the present embodiment, the storage recess 6 of the soil 5 and the storage hole 7 serving as a space for guiding the root are formed by one continuous cylindrical through-hole 11, so that the storage is possible. There is also an advantage that the core for forming the recess 6 and the storage hole 7 can have a simpler structure.
[0022]
Note that the above-described embodiments are all examples and are not restrictive. The scope of the present invention is defined by the appended claims, and all changes within the scope equivalent to the configuration described therein are also included in the present invention.
For example, in the above-described embodiment, the block main body 2 having a two-layer structure is adopted, but the block main body 2 may be made of only porous concrete or ordinary concrete. Further, the storage hole 7 may be filled not with the water retention material 8 such as coconut hulls, but with the soil 5 made of the same material as that of the storage recess 6.
[0023]
【The invention's effect】
As described above, according to the present invention, it is possible to secure a space for guiding the roots of the plant without significantly increasing the thickness of the block body, which leads to an increase in transportation cost and a deterioration in workability. Without doing this, it is possible to take measures to revegetate even in the mountains that are not suitable for growing plants.
[Brief description of the drawings]
1A is a perspective view of a concrete block for slope greening according to a first embodiment, FIG. 1B is a plan view of the block, and FIG. 1C is a cross-sectional view of the block.
FIG. 2 is a perspective view of a concrete retaining wall as an example of construction of the concrete block according to the first embodiment.
FIG. 3 is a perspective view of a concrete block for slope greening according to a second embodiment.
FIG. 4A is a perspective view of a concrete block for slope greening according to a third embodiment, and FIG. 4B is a side cross-sectional view of the installed state of the block.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Concrete block 2 Block main body 3 Porous concrete layer 4 Ordinary concrete layer 5 Soil 6 Storage recess 7 Storage hole

Claims (5)

A storage recess (6) recessed in the thickness direction from the surface of the block body (2) so as to be able to store the vegetation soil (5) is formed on the surface side of the block body (2). In the concrete block for surface greening,
A concrete block for slope greening, characterized in that a storage hole (7) communicating with the bottom of the storage recess (6) is formed so as to extend in an in-plane direction of the block body (2). The concrete block for slope greening according to claim 1, wherein the storage hole (7) is formed in a shape penetrating the block main body (2) from one end face in the width direction to the other end face of the block main body (2). . The slope greening according to claim 1, wherein the storage hole (7) is formed to penetrate the block main body (2) from the bottom of the storage recess (6) to one end surface of the block main body (2). For concrete blocks. The storage hole (7) extends through the block body (2) from the bottom of the storage recess (6) to the back surface of the block body (2), and extends in the thickness direction of the block body (2). The concrete block for slope greening according to claim 1, wherein the concrete block is sloped with respect to the slope. The slope greening concrete according to any one of claims 1 to 5, wherein the block body (2) has a two-layer structure in which the front side is a porous concrete layer (3) and the back side is a normal concrete layer (4). block.

Images