JP2760737B2 - Revetment block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revetment block,
More particularly, the present invention relates to a revetment block having a fish nest or the like.

[0002]

2. Description of the Related Art Conventionally, river revetment blocks are formed using concrete or the like, and are used on river walls (including walls constituting the bottom surface of rivers) for the purpose of preventing river erosion and sedimentation. It is used. Its shape is such that the wall surface located on the river side is formed in a plane in order to reduce the flow resistance of the water flowing through the river when the revetment wall is formed, and in consideration of the ease of manufacture etc. Is common. However, in the revetment block, creatures (fish, etc.) living in or on the river cannot secure a habitat or an evacuation site, and water plants and the like hardly grow. For this reason, recently, in order to protect the fishes of rivers and the ecosystems of rivers, including birds that feed on the fishes, etc., it has been proposed to implement the method described in Japanese Unexamined Utility Model Publication No.
A revetment wall was formed as disclosed in JP-B-16827.
At the time, a hole that opens to the river side surface is provided, and in this hole,
A ball that functions as a fish nest that serves as a habitat for fish, etc.
2. Description of the Related Art A revetment block for filling a stone or the like is known. This
For seawalls such as seawalls, nets that block the openings
Is attached so that no boulders will spill out of the hole
I'm trying.

[0003]

However, the above-mentioned conventional revetment block has the following problems. Traditional
Net attached to the opening of the revetment block hole
Is manufactured with bolts, etc. fixed around the opening.
And it takes time to manufacture the block ,
There is a problem that the manufacturing process of the lock is lengthened. Obedience
Therefore, the present invention has been made to solve the above problems,
Where there is a hole opening on the river side,
And close the opening of the hole with a net etc.
In the revetment block, the labor for installing the net is saved.
Revetment blocks that can shorten the manufacturing process
It is in.

[0004]

The present invention has the following arrangement to achieve the above object. That is, the revetment block according to the first aspect of the present invention is a concrete revetment block that forms a revetment wall of a river, and is located on the river side.
A hole is provided in the wall, and natural stone or charcoal is
Filled cage-shaped net with open back
The opening of the hole is closed by the bottom, and the side of the net is closed.
The surface is fixed by the concrete on the inner wall side of the hole
It is characterized by comprising. The revetment according to the invention of claim 2
Block on the wall located on the river side.
Natural stone is embedded in the entire wall except the hole
It is characterized by. The method for manufacturing a seawall according to the third aspect of the present invention is the method for manufacturing a concrete seawall for forming a seawall of a river, wherein the upper surface has an opening at a bottom surface of the first formwork having an upper surface opening. A basket-shaped net to be arranged, natural stone is laid on the bottom of the first mold except for the net, and a second cylindrical mold is arranged on the bottom of the mesh, Concrete is poured between the first mold and the second mold, and is formed when the concrete is solidified and is taken out of the first mold and the second mold is taken out. The hole is filled with natural stone or charcoal. Furthermore, the revetment block according to the invention of claim 4 is provided.
The manufacturing method is a method for manufacturing a concrete revetment block forming a revetment wall of a river, comprising: disposing a cage-like net having an upper surface opened on a bottom surface of a first formwork having an upper surface opened; A natural stone is laid on a bottom surface of the first mold except for a body, and a second cylindrical mold is disposed on a bottom of the mesh body, and the first mold and the second mold are arranged. Injecting concrete between the concrete forms, taking out the first form after the concrete has set, and filling natural holes or charcoal into holes formed when the second form is taken out. Features.

[0005]

According to the revetment block of the present invention, a cage-like block is provided.
The bottom of the net formed in the hole is filled with natural stone or charcoal.
It is closed and the side is fixed by the concrete on the inner wall side of the hole.
As the concrete hardens,
Can be completed, after the molding of concrete, mesh
It can save the trouble of fixing
The body can be attached firmly. Also like this
According to the manufacturing method for manufacturing a revetment block, a revetment block is used.
The manufacturing process of the lock can be shortened.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing a configuration of a seawall according to the present invention. FIG. 2 is a front view of a main part of the revetment wall using FIG. 3 to 7 are explanatory views showing a first embodiment of a method for manufacturing the revetment block of FIG. 8 to 11 are explanatory views showing a second embodiment of the method for manufacturing the revetment block of FIG. FIG. 12 is a sectional view showing the configuration of a revetment wall using the revetment block according to the present invention.

First, the structure of the revetment block 10 will be described with reference to FIGS. Reference numeral 12 denotes a hole provided on one wall surface 14 of the concrete revetment block 10. When the revetment wall 16 is formed as shown in FIG. 2, the one wall surface 14 is a wall surface located on the river side, and a plurality of natural stones 18 are integrally formed on the entire surface of the one wall surface 14 except the hole 12. Embedded. Thereby, when the revetment wall 16 is formed, natural stones are arranged on the river side, so that a more natural scenery can be maintained. Reference numeral 20 denotes a metal net that closes the opening of the hole 12. As an example, the net body 20 is formed in a cage shape with a square bottom surface, and the bottom is
It is substantially in the same plane as the surface, and is embedded and fixed in the revetment block 10 so as to close the opening of the hole 12 at the bottom. The cage-shaped side part to be fixed is
Even if it is completely buried on the inner wall side of 2, the surface on the inner wall of the hole 12
Is exposed, but is fixed by concrete
Just do it. The net 20 has a triangular, circular bottom shape.
Or, it may be of various shapes such as an oval. The hole 12 is filled with a plurality of natural stones 18.
As a result, a gap formed between the natural stones 18 in the hole 12 forms a suitable fish nest. The revetment wall 16 may be constructed by combining the revetment block 10 with a conventional revetment block 22 formed only of concrete as shown in FIG. 2 and stacking a plurality of them, or all of the revetment blocks 10 according to the present invention. May be used. Further, the net 20 may be arranged on the bottom of the river as a part of the revetment wall 16 so that the net 20 faces upward as shown in FIG. In this case, by making the net 20 made of metal, it is possible to prevent the net 20 from rising due to the water pressure of the river, as compared with the resin net, and therefore, the net such as dust in the water can be prevented. 20 can be reduced. If the hole 12 is filled with charcoal (for example, charcoal such as activated carbon) instead of the natural stone 18, the water in the river can be purified by the charcoal and the pollution of the water flowing in the river can be reduced. Become.

Next, a first embodiment of a method for manufacturing the above-described revetment block 10 will be described with reference to FIGS. The manufacturing process includes the following five steps. First, in the first step, a mold frame 24 having an open upper surface is provided, and a cage net 20 having an open upper surface is arranged on the bottom surface of the mold frame 24 as shown in FIG. Next, in the second step, as shown in FIG. 4, one more natural stone 18 is laid on the bottom surface of the mold 24 except for the net 20. At this time, if sand 26 is laid on the bottom surface of the mold 24 so that substantially half of the natural stone 18 is buried, the concrete 26 is laid by the spread sand 26 when concrete is injected into the mold 24 later. The concrete does not flow to the lower surface side of the stone 18, and the lower surface serving as the one wall surface 14 of the revetment block 10 can be finely finished.

In the third step, as shown in FIG.
Within 0, natural stone 18 or charcoal (not shown) and other natural stone 1
8 or the gap formed between the coal and the charcoal. In the fourth step, the net 20 and the natural stones 18 in the net 20 are placed in the form 24 as shown in FIG.
Alternatively, concrete 28 is poured so as to enclose (cover) the charcoal. Finally, in the fifth step, after the concrete 28 has hardened as shown in FIG. 7, the formwork 24 is removed, and water is discharged from the one wall surface 14 of the revetment block 10 to form the one wall surface 14 and the hole. This is completed by washing away the sand 26 filled in the gaps between the natural stones 18 in the 12. In the fifth step, the revetment block 16 may be formed in a state where the sand 26 is clogged with the revetment block 10 without performing the work of flushing the sand 26, and the sand 26 may be naturally washed away by the water of the river. . According to such a manufacturing method, concrete
Wait until the stones set and then fill the hole with natural stone or charcoal
There is no need to fix the net by doing
Can be achieved.

Next, a second embodiment of the method for manufacturing the above-described revetment block 10 will be described with reference to FIGS.
This will be described with reference to FIG. The manufacturing process includes the following five steps. First, in the first step, the first mold 3 whose upper surface is open
0, and as shown in FIG.
A cage-like net 20 having an open upper surface is provided. Next, in the second step, as shown in FIG. 9, one more natural stone 18 is laid on the bottom surface of the first formwork 30 excluding the net body 20. At this time, the sand 2 is formed on the bottom of the first mold 30 in the same manner as in the first embodiment.
6 may be laid. In the third step, a cylindrical second mold 32 is arranged on the bottom surface of the net 20 as shown in FIG. It is preferable that the shape of the second mold frame 32 conforms to the shape of the mesh body 20. For example, the mesh body 20 having a square bottom shape is preferred.
The second cylindrical form 32 may be disposed in the inside, or the second rectangular form 32 may be disposed in the net 20 having a circular bottom shape. For example, the second mold frame 32 may have any cylindrical shape as long as it can be arranged in the net 20. In the fourth step, concrete 28 is poured between the first mold 30 and the second mold 32 as shown in FIG. The concrete 28 is connected to the net 20 and the second
When the concrete 28 hardens, the net 20 can be securely fixed to the seawall block 10. Even with such a manufacturing method,
Wait for the concrete to harden and then put the natural stone
Eliminates the need to fill the charcoal to fix the net,
The process can be shortened.

Finally, in the fifth step, as shown in FIG. 11, after the concrete 28 has hardened, the first mold 30 and the second mold 32 are removed and the second mold 32 is taken out. Is filled with natural stone 18 or charcoal (not shown). In particular, in the revetment block 10 according to the present embodiment, the holes 12 are formed so as to penetrate the revetment block 10, and when the revetment wall 16 is formed as shown in FIG. Alternatively, since the water of the river can penetrate into the soil 34 located on the back side of the seawall 10 via charcoal, when the river rises, a buffering action acts to suppress the rise. When charcoal is filled to purify river water, the river water penetrates into the soil 34 located on the backside of the seawall 10, so that water does not stay in the charcoal and is efficient. Purification becomes possible. In the fifth step, only the second mold 32 is removed, the natural stone 18 is filled in the hole 12, and then the hole 1 is re-formed.
When the concrete 28 is poured into the first formwork 30 so as to cover the natural stone 18 inside the concrete block 2 and solidified, the seawall block 10 having substantially the same configuration as that of the first embodiment can be obtained.

As described above, various preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments.
It may be a cylindrical body or a prism having a cross-sectional shape such as a rhombus. The material of the net is preferably metal in consideration of the strength and the like, but when putting charcoal in the hole, it is lighter than natural stone, so a synthetic resin material may be used. Of course, modifications can be made.

[0013]

When the revetment block according to the present invention is used, the bottom of the cage-shaped net is filled with natural stone or charcoal.
The hole was closed, and the side part became concrete on the inner wall side of the hole.
As it is more fixed, the concrete is hardened and the net
The fixation of the body can be completed and the molding of concrete
Later, the trouble of fixing the net can be saved.
At the same time, the net can be firmly attached. Further
The manufacturing method for manufacturing such a revetment block
In this way, the manufacturing process of revetment blocks can be shortened.
Wear.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a revetment block according to the present invention.

FIG. 2 is a front view of a main portion of the revetment wall using FIG.

FIG. 3 shows a first embodiment of the first embodiment of the method for manufacturing a seawall block.
It is explanatory drawing (front sectional drawing of a mold) which shows the process of FIG.

FIG. 4 is an explanatory view showing a second step of the first embodiment.

FIG. 5 is an explanatory view showing a third step of the first embodiment.

FIG. 6 is an explanatory view showing a fourth step of the first embodiment.

FIG. 7 is an explanatory view showing a fifth step of the first embodiment.
This figure is also a plan sectional view of a revetment block manufactured by using the first embodiment of the manufacturing method.

FIG. 8 shows a first embodiment of the second embodiment of the method for manufacturing a revetment block.
It is explanatory drawing (front sectional drawing of a mold) which shows the process of FIG.

FIG. 9 is an explanatory view showing second and third steps of the second embodiment.

FIG. 10 is an explanatory view showing a fourth step of the second embodiment.

FIG. 11 is an explanatory view showing a fifth step of the second embodiment. This drawing is also a plan sectional view of a revetment block manufactured by using the second embodiment of the manufacturing method.

FIG. 12 is a sectional view showing a configuration of a revetment wall using a revetment block.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Revetment block 12 Hole 14 One wall 16 Revetment wall 18 Natural stone 20 Net

Claims (4)

(57) [Claims] 1. A concrete revetment block for forming a revetment wall of a river, wherein a hole is provided in a wall surface located on the river side , natural stone or charcoal is filled in the hole, and an opening is formed on the back side. Due to the bottom of the cage
Thus, the opening of the hole is closed, and the side surface of the mesh body is made of concrete on the inner wall side of the hole.
A revetment block characterized by being fixed. 2. A natural stone is embedded in the entire wall surface except for the hole on the wall surface located on the river side .
The seawall block according to claim 1, characterized in that: 3. A method of manufacturing a concrete revetment block for forming a revetment wall of a river, wherein a cage-like net having an open upper surface is disposed on a bottom surface of a formwork having an open upper surface. Laying natural stone on the bottom surface of the formwork to be removed, filling the net with natural stone or charcoal while filling sand with gaps between other natural stones or charcoal; A method for manufacturing a revetment block, comprising: injecting concrete so as to enclose a natural stone or charcoal in the body and the mesh, removing the concrete from the form after the concrete has hardened, and washing away the sand. 4. A method of manufacturing a concrete revetment block for forming a revetment wall of a river, comprising: a cage-shaped net having an upper surface opened on a bottom surface of a first formwork having an upper surface opened; A natural stone is laid on the bottom of the first mold except for the net, a second cylindrical mold is arranged on the bottom of the mesh, and the first mold and the second mold are arranged. Injecting concrete between the concrete form and the concrete form, removing the concrete form from the first formwork, and filling the hole formed when removing the second form form with natural stone or charcoal. A method for manufacturing a revetment block, comprising the steps of: