JP4714386B2 - Purification block and its construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a purification block applied to the construction of revetments and retaining walls.
[0002]
[Prior art]
Generally, concrete blocks are stacked and layered along the slope on river revetments and retaining walls, but such blocks are only used to build revetments and retaining walls so far. There were many construction methods that were not compatible with the local environment and ecosystem.
[0003]
However, this year, with the revision of the River Law, the creation of rivers where the concrete surface is not visible has been demanded. In river improvement, vegetation that considers the impact on the river ecosystem has been proposed. Revetment methods that take into account the environment in harmony with the environment have been developed.
[0004]
In such a revetment method,
A) Revetment due to overgrowth of plants,
B) Increasing the strength of the levee body by entwining the fiber and growing the plant,
C) Creating a revetment that covers natural stone and does not flow out.
D) Reviving old traditional methods using thinned wood and artificial trees,
A wide variety of methods are being implemented.
[0005]
[Problems to be solved by the invention]
However, in the above prior arts, all are considered to be in harmony with the conservation of the natural environment and animals and plants, and are rivers that are friendly to fish, such as fishways, while taking into account riverside improvements and landscapes. It was difficult to improve the quality of water.
Also, water purification methods in rivers have been proposed and put into practical use. Conventional water purification systems can be installed directly on the riverbed of the river or outside the sewage treatment facility dam. Therefore, there is a problem that the construction period and cost are considerably increased.
[0006]
In view of the above-described problems of the prior art, an object of the present invention is to provide a purification block that can perform a revetment function and can also positively purify water quality and a construction method thereof.
[0007]
In order to solve the above problems, the present invention employs the following means.
In the first aspect of the present invention, the purification block includes a front side inclined plate and a back side inclined plate, and a filling material is formed in a space defined by the front side inclined plate, the back side inclined plate, and the bottom plate. provided, the front inclined plate is characterized in that a shape lure flowing water along the front inclined plate.
According to a second aspect of the present invention, in the purification block according to the first aspect of the present invention, an attracting portion that is inclined toward the back side inclined plate is provided in a downstream portion of the front side inclined plate.
According to a third aspect of the present invention, in the purification block according to the second aspect, the attraction portion is formed to bend gradually toward the back inclined plate in the downstream portion of the front inclined plate from the upstream side to the downstream side. It is characterized by being.
Invention of Claim 4 is the construction method of a purification block, the purification blocks as described in any one of Claims 1-3 are mutually assembled | stacked vertically and horizontally, and the river water which passed through the purification block adjoins downstream direction. It is characterized by being attracted to the inside of the purification block.
According to a fifth aspect of the present invention, in the purification block construction method, the purification block according to any one of the first to third aspects is disposed between the revetment blocks stacked in the lateral direction, and the purification block is purified. The flowing water that has passed through the block is attracted to the inside of the block for revetment adjacent in the downstream direction.
According to a sixth aspect of the present invention, in the purification block construction method according to the fourth or fifth aspect, the purification block is arranged in a range including a level including a level of water from the riverbed.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 shows an embodiment of a purification block according to the present invention, FIG. 2 is an overall view showing a state where the purification block is revetted, FIG. 3 is a cross-sectional view corresponding to the line XX of FIG. 2, and FIG. It is expansion operation explanatory drawing which shows the flow of the river water by a purification | cleaning block.
In FIG. 1, reference numeral 1 denotes a purification block according to the present embodiment, which has a front side inclined plate 2 and a back side inclined plate 3 which face each other. The front side inclined plate 2 and the back side inclined plate 3 are arranged in parallel with each other at a predetermined interval by the bottom plate 4 and the connecting portion 5. The bottom plate 4 is mounted between the bottom portions of the front side inclined plate 2 and the back side inclined plate 3, and the connecting portion 5 is provided at the inner central portion between the front side inclined plate 2 and the back side inclined plate 3 so as to straddle both 2 and 3. ing. In this case, as shown in FIGS. 1A and 1B, a connecting path 6 that connects the left and right sides, that is, the upstream side 1A and the downstream side 1B is provided below the connecting portion 5.
[0009]
Moreover, when the river water flows along this, the front side inclination version 2 is formed so that the river water can be drawn in, and, therefore, the attracting part 7 is provided. This attracting part 7 is close to the back side inclined plate 3 as shown in FIG. 1 (a) with the central portion in the length direction of the inner layer plate 2b of the surface plate 2a and the inner layer plate 2b constituting the front side inclined plate 2. It has a shape that slopes. In this example, the attracting portion 7 is gradually bent in the direction of the back side inclined plate 3 from the upstream side 1A to the downstream side 1B of the purification block 1, and the river water that has passed through the surface plate 2a and the inner layer plate 2b flows. River water can be attracted by flowing along the surface of the attracting part 7. And it is desirable that the surface of the attracting part 7 be finished smoothly in order to accurately attract the river water.
[0010]
When such a purification block 1 is constructed for revetment, a filling material 8 shown in FIGS. 3 and 4 is provided in a space defined by the front inclined plate 2, the back inclined plate 3 and the bottom plate 4. It is done. The filling material 8 functions to purify the quality of the river water when it flows, and normally uses gravel, but other than this, for example, natural stone, incinerated ash, sludge, and disposal Any of recycled materials such as materials, specially shaped plastic contact materials, charcoal, etc., or a combination thereof may be used.
Note that the surface of the surface plate 2a has a shape that allows algae and the like that live in rivers to adhere and cure, and is provided with natural stones.
[0011]
In order to construct a river revetment using such a purification block 1, as shown in FIGS. 2 and 3, foundation concrete 10 is placed and then a lower block 11 is assembled thereon.
[0012]
Thereafter, the purification blocks 1 are stacked vertically and horizontally in a range from the river bed to the height including the flat water level H. In this case, in this example, the height from the river bed to the level H is such that the purification blocks 1 are stacked, so as shown in FIGS. 2 and 3, the purification blocks 1 are stacked in two stages. They are also stacked in the lateral direction so as to have a predetermined length L1 (about 3 to 5 m).
[0013]
In addition, a set of revetments composed of a specific length (about 13 to 25 m) L2 shown in FIG. It is constructed to be a block body.
[0014]
After the revetment block body is constructed in the range including the flat water level H from the riverbed in this way, the ordinary revetment block 13 is assembled thereon and the top concrete 14 is further provided thereon, thereby revetment. A wall is built.
Each of the lower block 11, the purification block 1, and the revetment blocks 12 and 13 is filled with the filling material 8 every time it is stacked. The lower block 11 and the revetment blocks 12 and 13 do not have the attracting part 7 unlike the purification block 1 and are known ones. Further, in these constructions, as shown in FIG. 4, the suction prevention sheet 15 and the like are provided on the back soil 16.
[0015]
When revetment construction is performed in this manner, as shown in FIG. 4, when river water flows in the arrow direction K, the following effects are produced on the river water.
That is, when the river water flowing along the purification block 1 reaches the downstream side 1B from the upstream side 1A of the front inclined plate 2, the attracting part 7 is provided on the front inclined plate 2, so that the attracting part 7 Is guided as indicated by an arrow K1 shown in the figure, flows into the inside of the adjacent downstream purification block 1 and passes through the filling material 8 as indicated by the arrow K2, and further, the downstream purification block 1 as it is. Circulate inside. Moreover, since the attracting part 7 is provided also in the purification block 1 of the downstream side, river water is also attracted by this attracting part 7, and passes the inside of each purification block 1 similarly.
[0016]
And when river water distribute | circulates, since the filling material 8 is provided in the purification block 1, when this filling material 8 contacts with river water, river water can be purified positively, Therefore, the water quality of the river can be improved reliably.
[0017]
Therefore, when the purification block 1 is constructed as a revetment wall, it not only has a revetment function, but also functions to purify the water quality, so that the natural purification ability of the river can be increased and the water quality can be improved. It can certainly be improved. Therefore, it is not necessary to install a device for improving water quality directly on the riverbed or outside the sewage treatment facility as in the past. It can be.
[0018]
Further, as shown in FIG. 1, the attracting part 7 is formed so as to incline toward the back side inclined plate 3 on the front side inclined plate 2 of the purification block 1 and bend gradually as it goes from the upstream side 1A to the downstream side 1B. Therefore, the river water K2 can flow smoothly without stagnation, and the water purification function can be further ensured.
[0019]
FIG. 5 shows another embodiment of the purification block according to the present invention.
In this embodiment, when the purification block 1 is revetted, it is horizontally stacked between the revetment block 12 and the revetment block 12 as shown in FIG. The purification block 1 in this case is also provided in a range including the flat water level H from the river bed as shown in FIGS.
When the river water is led downstream by the purification block 1, the river water is attracted from between the purification block 1 and the downstream revetment block 12, flows into the downstream revetment block 12, and enters the filling material 8. After passing through, the water quality is purified by circulating through the revetment block 12 on the downstream side.
[0020]
In this way, river water is attracted by the purification block 1 into the revetment block 12 and the purification block 1 provided on the downstream side thereof, and is purified through the filling material 8. The same operational effects as those of the above-described embodiment can be obtained.
In this embodiment, an example in which one purification block 1 is horizontally stacked between the revetment block 12 and the revetment block 12 is shown, but not limited to this, one purification block 1 and one revetment block 12 are provided. They may be stacked horizontally one after another. In short, it is only necessary that the purification block 1 causes the river water to circulate the filling material 8.
[0021]
【The invention's effect】
As described above, according to the present invention, the configuration is such that the flowing water is attracted by the front inclined plate and the water is positively purified by the positive filling material. As a result, the water quality can be reliably improved. Even if equipment is not installed one by one, it is possible to perform both the water protection function as well as the revetment function, and it is possible to make the construction cost economical.
[Brief description of the drawings]
FIG. 1 is a plan view (a), a front view (b), a left side view (c) and a right side view (d) showing an embodiment of a purification block according to the present invention.
FIG. 2 is an overall view showing a state in which a purification block is subjected to revetment construction.
3 is a cross-sectional view corresponding to the line XX in FIG. 2;
FIG. 4 is an explanatory diagram of an enlarged action showing a flow of river water by a purification block.
FIG. 5 is an operation explanatory view corresponding to FIG. 4 showing another construction example of the purification block according to the present invention.
[Explanation of symbols]
1 Purification Block 1A Upstream Side 1B of Purification Block 2 Downstream Side of Purification Block 2 Front Side Inclined Plate 2a Surface Plate 2b Inner Layer Plate 3 Back Side Inclined Plate 4 Bottom Plate 5 Connection 6 Connection 9 Induction Section 8 Filling Material 10 Basic Concrete 11 Lower Block 12, 13 Block for revetment 14 Top concrete 15 Suction prevention sheet 16 Back soil

Claims (6)

Provided with a front side inclined plate and a back side inclined plate facing each other, a filling material is provided in a space defined by the front side inclined plate, the back side inclined plate and the bottom plate,
The purification block according to claim 1, wherein the front inclined plate has a shape that draws running water along the front inclined plate. The purification block according to claim 1,
A purification block comprising an attracting portion that is inclined toward the back side inclined plate at a downstream portion of the front side inclined plate. The purification block according to claim 2,
The purification block according to claim 1, wherein the attraction portion is gradually bent in the direction of the back inclined plate from the upstream side to the downstream side of the front inclined plate.   The purification blocks according to any one of claims 1 to 3 are stacked vertically and horizontally so that running water that has passed through the purification blocks is attracted to the inside of the purification block adjacent in the downstream direction. How to install a purification block.   The purification block according to any one of claims 1 to 3 is disposed between revetment blocks stacked in the horizontal direction, and the water flowing through the purification block is inside the revetment block adjacent in the downstream direction. A purification block construction method characterized by being attracted by the In the construction method of the purification block according to claim 4 or 5,
The purification block construction method, wherein the purification block is disposed in a height range including a flat water level from the river bed.

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