JPH11148125A - Environmental protection block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the function of an environmental protection block by forming the front shape of a unit body of an revetment to have a nearly right pentagonal shape and opening a through hole at the center and providing a plurality of projection legs at one side face thereof. SOLUTION: This block body 1 forms a nearly right pentagonal shape and a pentagonal through hollow space 2 to be filled with earth, gravels, or the like is formed in the inside. A plurality of projection legs 6, 7, 8 are provided at one side face of the block 1. The corner top 4 of the pentagonal shape is made flat and a recess 5 engaging with the corner top 4 of another block is formed in the opposite side. Then, the corner top 15 made flat at one shoulder of another block is fitted with plane-contact at the time when the block 1 is arranged reversely, to the recess composed of the fitting sides 12, 13, 14 formed at the corner top of the other shoulder when the corner top 4 is positioned at the top. A plurality of through holes 10 are formed at the side face of the block 1 and horizontally connected with reinforcements. In this way, the flood control function is improved and it contributes to the ecosystem. And further, the landscape is improved and the blocks can be combined in accordance with the shape and curved face of a slope face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an environmental block for stabilizing a slope or a floor of a river, which has a novel structure, is ecologically friendly and has excellent functions.

[0002]

2. Description of the Related Art Generally, as a function of a river revetment block structure, it is necessary to consider not only a structural function but also a function of preserving an ecosystem and a landscape function. However,
The shapes of the blocks are based on triangles, squares, hexagons, and octagons, and the combination of the blocks is generally linear as a whole arrangement, and there are many gaps between blocks with little or no gap.

On the other hand, recently, the demand for preserving ecosystems and natural landscapes in rivers has rapidly increased, and there is a demand for a construction method that uses as little concrete as possible and does not expose concrete. As a countermeasure, recently, concrete revetments have been concealed with soil covering, but in many cases, futon cages, which are difficult for soil covering material to flow away, are used. This suggests that the riverbank should be of the original material, sediment and gravel, but that the interior should be reinforced to prevent excessive erosion during floods. Unlike the concrete, the basket mat is made of the same material as the river bank constituent material, so that it is inconspicuous in appearance, but is not always preferable for ecosystems. This is because the boundary between the water area and the land area is covered with a thick foreign substance.

[0004] Further, the slope block body is required to have considerable durability and strength without being easily washed away or broken by running water as a flood control function. Furthermore, the block body has a mutual coordination (connection) property, is well compatible with riverbank materials, and requires a shape that does not disturb running water in the dark. In addition, it is desirable that the scenery does not have a sense of incongruity with the appearance around the target area, and it is not always good to cover it with vegetation. Since a variety of patterns appear, it is important to create an atmosphere that matches those conditions.

[0005] For example, as disclosed in JP-A-9-228394, JP-A-9-221732, and JP-A-9-217329, a block for protecting a surface has a substantially square or rectangular surface shape, and is provided by a river. Used for revetment etc.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a block body having a novel structure which not only fulfills a considerable flood control function but is ecologically friendly and takes into account the landscape. To provide.

[0007]

SUMMARY OF THE INVENTION The present invention provides a block body having a novel structure which is not only ecologically friendly but also ecologically friendly while protecting a slope environment and considerably controlling water. The specific means is as follows. (1) The frontal shape of the individual for revetment is almost a regular pentagon, has a hole penetrating near its center, and has a plurality of raised legs only on one surface.

(2) In the above item (1), the regular pentagon 1
The symmetrical sides of the two corner vertices have a concave shape that meshes with and fits the corner vertices of the next individual as a convex part, so that the regular pentagon can be linked (connected) in a vertical shape. (3) In the above item (1) or (2), the fitting shape of the corner vertex to be fitted is such that the corner is cut off, the flat is partially flattened, and the concave shape that fits the partially flattened vertex is formed. At the center of its symmetrical side, and the regular pentagons can be connected to each other by a plane in a vertical manner and can be linked (connected).

(4) In any one of the above items (1) to (3), the regular pentagon may further include one of the shoulder corner vertices when the fitting corner vertex is the top. When one corner of the other shoulder was arranged in the opposite direction, a concave shape was formed so that it could be fitted by surface (line) contact. (5) In any one of the above items (1) to (4), a through hole for a plurality of reinforcing bars or the like is further provided in a part of the side surface of the block body.

According to the present invention, the front shape of the block body is basically a pentagon in plan view, and the gaps and spaces between the block bodies are made as large as possible, and at the same time, the cooperation (connection) is ensured.

Further, the block body of the present invention has a meshing structure in a vertical direction from the center of the block body.
As described in (1), a convex portion and a concave portion are provided one by one, and can be arranged in a line (plane) contact. Further, as described in claim 4, by providing the dent at one place in the lateral direction with respect to the direction of the uneven portion, the meshing effect is improved for each angle of the block bodies.

[0012] In the block body of the present invention, as described above, the shape of the connecting surface of the block body for ecosystem protection is as follows.
The wall structure will be used so that the gaps and spaces between the individual blocks can be used as habitats for living things. However, the structure of other parts should be as vertical as possible, taking into account the biological activities. That is, the outer shape of the block body is a vertical plane, and a gap covered with the inclined wall can be provided at the center of the block body in some cases.

In the block body of the present invention, when the surface of the block body is covered with earth and sand in consideration of the scenery, a plurality of protrusions are formed only on one surface of the block body in order to prevent the outflow of earth and sand due to running water. Provide legs. For example, in the specific example shown, three projections are arranged on the surface of the block body.

The block body of the present invention can be applied not only to embankment of a river, but also to the embankment of a place immersed in the water, a dike with a gentle slope, a high flood bed, and the like.

The block body of the present invention has a structure as described above, but the material is preferably slightly higher in specific gravity in view of the stability of the running water in view of the river bank constituent materials. It is. However, if the specific gravity is too large, there is a possibility that it will sink into the riverbed depending on its shape. From this point of view, there is no alternative to stone or concrete at present.

Further, from the viewpoint of water permeability, porous concrete having voids between the materials is effective, but due to the low specific gravity and the continuity of the voids, it is important to consider that porous concrete has voids. It is considered better. However, if the specific gravity is too light, it cannot be used. In addition, as for the biological chain and the landscape, it is desirable at the present time to cover the soil with the same material as the riverbank constituent materials.

Therefore, the block body of the present invention does not lose the soil cover during flooding, has a flood control function even when the soil is not covered, and has an appropriate effect on ecosystems and landscapes (FIG. 4). reference).

In general, the target portion of the block body is rarely a straight line, that is, a flat surface, but has a curved surface or a change in gradient everywhere. Because of this situation, it is not possible to cope with such a change, it is inappropriate if the appearance or function is significantly different, and the function should not change much in response to a change in the condition of the target part. Must. This is not quite orderly under certain conditions, and it is desirable to be somewhat cluttered under any conditions. In other words, it is not possible to arrange such that no voids are formed at all like a star shape, but in any case, the one in which the voids between individuals do not change so much is referred to (see FIG. 2). However, in the case of concrete products, it is safer to set the obtuse angle because the acute angle portion is easily broken.

From the above, when a polygon or a circle is assumed, a triangle, a quadrangle, and a hexagon are linearly combined and arranged to have no void. Collapses and becomes extremely unstable. The octagon has a gap on some sides, but is basically the same as the above. In contrast, no matter how the circular and pentagonal arrangements are made, voids and spaces are created between individuals. In the case of a circle, the contact point becomes a pinpoint and lacks coordination (connection) between the individuals, but this disadvantage is small in the case of a pentagon.

From the above, it has been found that in the block body according to the present invention, when the regular pentagon is used as the basic shape, cooperation (connection) can be ensured despite large voids and spaces. The arrangement of the block body of the present invention can be changed according to the situation of the target portion. However, in consideration of the situation of appearance when arranged, as in the case of the block body of the present invention, symmetry or isotropic A structure having no property is preferable. Further, as a result of examining the surface condition and the like in consideration of the familiarity with the soil covering material and its stability, a block body based on a regular pentagon of the present invention was considered.

That is, assuming the mechanical construction of the block body of the present invention, it is desired that the area controlled by the individual block be a certain degree, but cannot be so large considering its structural stability. The decision is made in consideration of the structure of the block body, its production, transportation problems, and flood control problems such as sucking of the embankment.

Making the environmental block body of the present invention a hollow structure is a construction with low integration, but it moves so that the arrangement of the individual block bodies does not become disordered, that is, moves along the flow. To avoid this, a certain amount of conservativeness is required. Thus, generally speaking, a reserve thickness of at least 15 cm is considered necessary.

Next, the weight of the block body is preferably such that the construction cost is equal to or less than that of the basket mat construction method, that is, the construction method using a gabion construction step.

Next, the environment block according to the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Environmental block] FIGS. 1A, 1B and 1C are a front view, a side view and a bottom view, respectively, schematically showing an example of an environmental block according to the present invention. First, functional parts of the environment block of the present invention will be described. The block body (1) is shown in FIG.
As shown in FIGS. 1A and 1C, a pentagonal hollow portion (2) is provided inside and substantially pentagonal. The hollow portion (2) is penetrated, and soil cover, gravel, and the like are inserted therein. Therefore, the environment block body (1) of the present invention has a ring shape (3) as a whole.

Then, as shown in FIGS. 1A and 1B, only the three raised leg portions (4) are provided on only one surface of the block body (1).
(5) and (6) are provided. That is, the ring (2) has three raised legs on one surface. These raised legs (4), (5), (6) are generally in the shape of a polygonal prism as shown in the figure (a quadrangular prism in the figure),
In the case of construction, the block body is buried in the slope soil so that the block body is horizontal, that is, parallel to the slope, or
It stands vertically opposite to the slope (see FIG. 4).

The outer shape of the block body is substantially a regular pentagon as shown in the figure, but one corner vertex of the regular pentagon is flattened, and as shown in (4), is flattened. Is formed into a concave shape (5) so as to mesh with and fit into the shape of (4). Then, as shown in FIG. 3, it is possible to cooperate (connect) in a vertical shape (vertical direction).

That is, the convex shape (4) of the corner vertex to be fitted is formed by cutting off the vertex, partially flattening, and forming the concave shape (5) conforming to the partially flattened vertex shape. It will be located approximately at the center of the side of symmetry. Then, the block individuals are connected to each other by planes (lines) as shown in FIG.

Next, as shown in the figure, if the pentagon shown in FIG. 1 is further cut off partially (12), (13), (14) and (15), a more suitable block body is obtained. That is, when one of the corner vertices (12) of the shoulder and the vertex of the other shoulder (15) are arranged as shown in FIG. 3, the block individuals (1) are arranged in the opposite direction. So that they fit together. That is, the corner vertices (12) are first cut off, and then the corner vertices (12) are cut in the side of the side so that the corner vertices (12) are arranged in reverse and fitted as shown in FIG. And (15). As a result, the block individuals fit with each other by surface (line) contact.

Further, while the outer surface of the block body (1) is vertical as shown, the inner surface of the inner cavity (2) is shown in FIG.
Then, as shown in FIG. Considering the landscape, the resistance to running water can be reduced as much as possible. In addition, when the surface of the block is covered with earth and sand in consideration of the landscape, runoff of earth and sand due to running water is avoided. The outer surface of the block is vertical so that it can contact adjacent blocks.

Further, a through hole (10) for a plurality of reinforcing bars is provided in a part of the side surface of the block (1). Blocks can be connected to this horizontally. For example,
As shown in FIG. 2, they can be arranged and tied with a reinforcing bar passing through the hole (10) therebetween. In addition, these through holes (1
0) can be provided in other places as needed.

[Usage Mode] Next, the features of the arrangement of the blocks of the present invention will be described. First, FIG. 2 shows an example in which the blocks of the present invention are applied and arranged on a curved surface. In the case of a curved surface or a slope whose gradient changes, as shown in FIG. 2, if the arrangement is not regular, voids are formed on average, that is, the space between individual blocks does not change much. It is possible to cope with a change in a curved surface or a change in gradient without having symmetry or isotropicity.

Next, FIG. 3 shows an example in which the blocks (1) of the present invention are arranged in the vertical and horizontal directions. First, the vertices (4) of the pentagon are fitted into fitting recesses (5) provided on the bottom side of another block individual arranged thereon. Then, ones arranged in vertical contact with each other are obtained. In FIG. 3, they are further connected and arranged in the lateral direction by surface contact. As described above, the individuals arranged in the opposite direction to the side next to each other
(14), side (13) and side (13), side (14) and side
(12) comes into contact and can be inserted.

Further, as shown in the figure, the corner apex (15) on the other side is cut off so as not to be broken at the corner.
With the same idea, the side surface (12) is cut off at the corner, and is shaped as shown.

FIG. 4 is a sectional view showing an example in which the block body (1) of the present invention is applied for revetment of a river. Riverside
Apply to (20) to prevent the side surface (20) from collapsing due to running water, etc. Further, the block body (1) of the present invention is used for consolidating the submerged riverbed (21). Can be. On the side surface (20), the block (1) of the present invention is fixed with the legs (6) and the like up, but on the riverbed (21), the legs (6) and the like are put in the reverse, Secure with the stone (22). River (2
3) flows over it as shown.

[0036]

The environmental block according to the present invention has the following technical effects by the structure shown in the figure. That is,
First, there is provided a block body having a novel structure that performs a considerable flood control function, is ecologically friendly, and is environmentally friendly. Secondly, the combination of blocks can be freely configured according to the shape of a river revetment or a slope or a curved surface. Third
In addition, because of the regular pentagon, the corners are not sharp and are not easily chipped.

With the block according to the second aspect, it is possible to form a gap between the individual pieces while arranging them in the vertical direction and arranging them in surface contact. According to the block body of the third aspect, it is possible to form an arrangement in which a gap is formed while performing surface contact arrangement in the vertical direction with a simple structure.

According to the block body of the fourth aspect, it is possible to form a gap by arranging the blocks in plane contact in the vertical direction. According to the block body according to the fifth aspect, the block bodies can be connected and linked to each other through a through-hole provided in a lateral side surface of the block through a reinforcing bar or the like.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating the shape of an example of an environment block according to the present invention.

FIG. 2 is a plan view showing a state in which the environment block body of the present invention is applied to a curved surface.

FIG. 3 is a plan view showing a state where the blocks of the present invention are arranged in a vertical and horizontal direction.

FIG. 4 is a schematic sectional view showing an embodiment in which the environmental block body of the present invention is applied to a river.

[Explanation of symbols]

 (1) Block body of the present invention (2) Internal cavity (4) Corner apex (5) Fitting recess (6), (7), (8) Convex leg (9) Inner slope (10) Through hole (12), (13), (14) Side fitting side (15) Flattened corner (20) River shore (21) River bed (22) Stone (23) Stream

Claims (5)

[Claims] 1. An environmental block characterized in that the frontal shape of an individual is substantially a regular pentagon, has a hole penetrating near its center, and has a plurality of convex legs only on one surface. body. 2. A symmetrical side of one corner vertex of the regular pentagon has a concave shape in which the corner vertex of the next individual is engaged with and fitted to the convex, and the regular pentagon is linked to a vertical shape. The environment block body according to claim 1, wherein the environment block body can be used. 3. The convex shape of the corner vertex to be fitted is formed by cutting off a vertex, partially flattening, and forming a concave shape conforming to the partially flattened vertex shape substantially at the center of its symmetrical side. 3. The environmental block according to claim 1, wherein the regular pentagons are connected to each other in a vertical shape and can be linked to each other. 4. 4. The regular pentagon further includes a corner apex of the shoulder and a corner apex of the other shoulder arranged in the opposite direction at one of the corner apexes of the shoulder when the fitting angle apex is used as the apex. The environmental block body according to any one of claims 1 to 3, wherein a concave shape having a shape that can be fitted by surface contact when formed is formed. 5. The environmental block body according to claim 1, wherein a through hole for a plurality of reinforcing bars is provided in a part of a side surface of the block body.