JP2002194714A - Sand preventive wall using field-generated soil and sand and its execution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sand preventive wall, in which soil and sand generated on an execution field can be used as they are and which not only sufficiently displays an erosion-sediment control function but also is adapted to the environment and a landscape in the periphery of the execution field. SOLUTION: In the sand preventive wall 10 preventing the movement of sand on a beach and a desert land, at least a surface layer is formed of soil and sand composed of singular or a plurality of kinds generated on the field and soil cement obtained by mixing a cement solidifying material or a binder consisting of a high molecular resin or the like with water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sabo wall which is formed on a beach or a desert to prevent the movement of sand by wind without adversely affecting the surrounding scenery, and a construction method thereof. .

[0002]

2. Description of the Related Art Since ancient times, the movement of sand by wind has been a problem on beaches and desert areas.
Sand protection forests planted with pine were formed. Sand protection forests, of course, have to wait for their growth for many years, so they cannot immediately solve the problem of sand movement, and planted trees are often young seedlings. However, in order to prevent pressure from being applied until the plant grows, additional work that involves increasing costs, such as circling bamboo fences, is also required.

For this reason, in recent years, a so-called “bank” for preventing the movement of sand on a beach or the like has been constructed with concrete. This concrete dyke has to be transported from another location if it is to be constructed, and after completion, it is colored to match the surrounding landscape. In particular, sand barriers formed along the coast are irregularly reflected by sunlight, so fish do not approach.Therefore, they are formed with cement materials mixed with colored pigments such as green and brown. However, since the pigment is an artificial material that is easily faded, such a sabo wall has a color tone that does not adjust to the environment over time, and sometimes hinders the landscape.

When a so-called "bank" for preventing the movement of sand on the beach or the like is constructed of concrete, "Portland cement" is usually used as a solidifying material. When "organic substances" such as wood chips and dead grass are mixed, the hydration reaction is inhibited and sufficient consolidation cannot be obtained.
As mentioned above, the concrete material must be introduced from another location.

On the other hand, in performing various civil works, it is necessary to take care to avoid environmental problems, and those generated locally must be used locally.
They are also instructed not to take them out as much as possible. As described above, it is demanded that the created thing does not disturb the surrounding scenery.

Therefore, the inventor of the present invention, when newly constructing the above-described sabo wall on a beach or a desert area, can perform construction according to recent demands and can also harmonize with the landscape. As a result of various studies on what to do, the present invention was completed.

[0007]

SUMMARY OF THE INVENTION The present invention has been made based on the above-mentioned background, and an object of the present invention is to provide an effective and environmentally friendly sabo wall by using a material existing in the field. It is to build while using.

That is, first, the object of the invention according to claim 1 and claim 2 is that the earth and sand generated at the construction site can be used as it is, and the sand control function can be sufficiently exhibited. An object of the present invention is to provide a sabo wall that is compatible with the surrounding environment and scenery.

The object of the invention according to claim 3 is to achieve the same object as the object of claim 1 or claim 2, and that the locally generated sediment contains organic matter. It is another object of the present invention to provide a sabo wall that can be sufficiently constructed.

Further, it is an object of the present invention according to claims 4 and 5 that the earth and sand generated at the construction site can be used as it is, so that the sand control function can be sufficiently exhibited, and of course, the surroundings of the construction site can be sufficiently exhibited. It is an object of the present invention to provide a construction method that can surely create a sabo wall that conforms to the environment and scenery of the sea.

The object of the invention according to claim 6 is to achieve the same object as the object of claim 4 or claim 5, and that the locally generated sediment contains organic matter. It is still another object of the present invention to provide a construction method capable of providing a sandproof wall 10 having a sufficient function.

[0012]

Means for Solving the Problems In order to solve the above-mentioned problems, first, means adopted by the invention according to claim 1 will be described with reference numerals used in the embodiments described later. "A sand barrier 10 for preventing movement of sand on a beach or a desert, and at least a surface layer 12 of the sand barrier 10
One or more types of sediment generated in the field,
A sand-proof wall 10 using locally generated earth and sand, which is formed by soil cement 13 formed by mixing a cement-based solidifying material or a binder such as a polymer-based resin with water. .

That is, the sand barrier 10 according to the first aspect.
Can be formed by mixing one or more types of earth and sand generated locally and a binder made of cement-based solidifying material or polymer-based resin with water on the surface of a predetermined location on the beach or desert. This is configured by spraying soil cement 13.

Since the sand barrier 10 is constructed or constructed as described above, the sand barrier 10 does not move due to the wind and also blocks the movement of the blown sand. Of course. If many of these sand barriers 10 are installed on the beach as shown in FIG.
It prevents the movement of the sand that blows up from the shore.
As shown in the figure, it can be installed beside the road in the desert area.
The movement of the surrounding sand is prevented, and the road is not filled with sand.

At least the surface layer 12 of the sand barrier 10 is formed by mixing one or more kinds of soil and sand generated locally and a binder made of a cement-based solidifying material or a polymer-based resin into water. Soil cement 1
3, the color is almost the same as the surrounding environment. For this reason, the sandproof wall 10 is in harmony with the surrounding environment, and does not cause discomfort in the installation environment.

Therefore, the sand barrier 10 according to the first aspect of the present invention.
In this method, the earth and sand generated at the construction site can be used as it is, so that the sabo function can be sufficiently exhibited and the environment and scenery around the construction site can be used.

Means taken by the invention according to claim 2 to solve the above-mentioned problem is described with reference numerals used in the description of the embodiments described below. A sandproof wall 10 for preventing movement of sand, which is formed of natural materials such as bamboo or miscellaneous wood, or locally generated earth and sand, or a base layer 11 previously formed of concrete or the like at a site or a factory; A surface layer 12 sprayed around the base layer 11 is provided. At least the surface layer 12 is made of one or more kinds of soil and sand generated locally, and a cement-based solidifying material or a polymer-based material. A sandproof wall 10 using locally generated earth and sand, which is formed by soil cement 13 formed by mixing a binder such as a resin with water.

That is, the sand protection wall 10 according to the second aspect.
Is to form a base layer 11 serving as a base at a predetermined location on a beach or a desert, and on the surface thereof, one or more kinds of soil and sand generated locally, and a cement-based solidifying material or a polymer-based resin. And a binder made of water mixed with water and sprayed with soil cement 13.

Since the sand barrier 10 is constructed or constructed as described above, it does not move by the wind, but also blocks the movement of the blown sand. Of course. If many of these sand barriers 10 are installed on the beach as shown in FIG.
It prevents the movement of the sand that blows up from the shore.
As shown in the figure, it can be installed beside the road in the desert area.
The movement of the surrounding sand is prevented, so that the road is not filled with sand.

The base layer 11 constituting the sand barrier 10 is
Although it is a basic part of the sand control wall 10, various measures can be taken according to the site. For example, the base layer 11 shown in FIG. 3 is a mode suitable for a place where the locally generated sediment on a beach or a desert area contains a large amount of rubble, and the like, and the rubble and the like are collected by a bulldozer or the like to form a “ridge”. It only has to be formed.

The base layer 11 shown in FIG. 4 is suitable for a construction site where the amount of sand is relatively large, and is formed by assembling bamboo and miscellaneous trees generated around a beach or a desert area like a fence. Things. Originally, the base layer 11 is formed by spraying a soil cement 13 to be described later on the surface thereof to form a permanent surface layer 1.
2, it is sufficient to have a temporary holding force, and in that sense, it is sufficient to use bamboo or miscellaneous wood which is easily corroded. Rather, the use of such bamboo or miscellaneous wood enables the on-site treatment of such miscellaneous wood and returns to the soil after corrosion, which is an effective means from the viewpoint of environmental protection.

The base layer 11 shown in FIG. 5 is also suitable for a construction site where the amount of sand is relatively large. In this case, the concrete base layer 11 formed in advance on site or in a factory is used. Installed on site, as shown
Spraying soil cement 13 around the surface layer 12
Is formed. The base layer 11 in this mode is suitable for the case where there is no rubble or miscellaneous trees and there is more sand, and since each base layer 11 is merely required to be installed on a beach or a desert place, Very suitable for short term construction.

On the other hand, the surface layer 12 of the sand barrier 10 is formed by mixing earth or sand of one or more kinds generated in the field with a binder made of a cement-based solidifying material or a polymer-based resin in water. Since it is formed by the resulting soil cement 13, its color is substantially the same as the surrounding environment. For this reason, the sandproof wall 10 is in harmony with the surrounding environment, and does not cause discomfort in the installation environment.

When the locally generated earth and sand contains a lot of clay-like substances, a cement-based solidifying material cannot be used, but in such a case, a binder made of a polymer resin or the like cannot be used. This binder is used in place of the cement-based solidifying material, and the binder is a material constituting the soil cement 13. The soil cement 13 may be used by mixing an admixture therein. In this case, the separation of locally generated soil and cement-based solidified material is suppressed, and the locally generated soil and cement Since the increase in the adhesiveness between the solidifying materials of the system is suppressed, the pumping of the soil cement 13 in the spraying device and the ejection from the nozzle are smoothly performed.

Of course, since the main material of the sand barrier wall 10 is locally generated earth and sand procured at the construction site, the construction can be performed without having to transport the material from other places. Those generated in the above can comply with the recent basic policy of civil engineering work that they are used as much as possible on the site and are not moved. Moreover, this sand barrier 1
0 is mainly made of locally generated earth and sand, so even if this sand protection wall 10 is weathered or becomes unnecessary and is destroyed, it does not become so-called "industrial waste" and is returned to the natural environment as it is. Is what you can do.

Therefore, the sand protection wall 10 according to the second aspect is provided.
In this method, the earth and sand generated at the construction site can be used as it is, so that the sabo function can be sufficiently exhibited and the environment and scenery around the construction site can be used.

In order to solve the above-mentioned problem, a means adopted by the invention according to claim 3 is that the sand-proofing wall 10 according to claim 1 or 2 is described as “a cement-based solidified material for soil improvement. The use of cement-solidifying material. "

That is, the sand protection wall 10 according to the third aspect.
Is a method in which one or more kinds of soil and sand generated in the field are mixed with water to obtain soil cement 13, and a cement solidifying material for soil improvement is employed as a solidifying material. This cement solidifying material for soil improvement is suitable when a large amount of organic matter such as vegetation is mixed in the locally generated sediment, and sufficiently performs a hydration reaction between the locally generated soil and the cement solidifying material. is there.

Therefore, the sand protection wall 10 according to the third aspect of the present invention.
In addition to being able to achieve the same object as the object of claim 1 or claim 2, construction can be sufficiently performed even when locally generated earth and sand contains organic matter.

The above sand control wall 10 is formed by the construction method according to claim 4 or claim 5. First, the means adopted by the invention according to claim 4 is that "sand on a beach or desert area" Sand barrier 10 for preventing the movement of
Is sprayed with soil cement made of one or more kinds generated locally, a binder and an admixture made of a cement-based solidifying material or a polymer-based resin, and a soil cement 13 formed by mixing these with water. The method for constructing the sand-proof wall 10 characterized by being formed by the method described above.

That is, according to the construction method of the fourth aspect, as described in the first aspect of the invention, one or a plurality of types of soil and sand generated locally and a cement-based solidified material or a polymer-based A binder and an admixture made of a resin or the like, and soil cement 13 formed by mixing these with water are sprayed in a superimposed manner on a predetermined portion of a beach or a desert area.

Therefore, according to the construction method of the fourth aspect, the earth and sand generated at the construction site can be used as it is, and the sabo function can be sufficiently exhibited, and of course, the sabo wall adapted to the environment and scenery around the construction site. It is possible to surely create the building.

According to a fifth aspect of the present invention, there is provided a method for forming a sand protection wall 10 for preventing the movement of sand on a beach or a desert area including the following steps. Construction method of sand barrier 10.

(1) A step of forming a base layer 11 by using natural materials such as bamboo or miscellaneous wood, or locally generated earth and sand, or on site or in a factory or the like by concrete or the like; (2) Around the base layer 11 The surface layer by spraying soil cement of one or more types generated in the above, a binder and an admixture made of a cement-based solidifying material or a polymer-based resin and the like, and mixing these with water to form a soil cement 13 12).

That is, in the construction method according to the fifth aspect, one or a plurality of types of earth and sand generated on site and cement-based solidification around the base layer 11 constructed as described in the second aspect. A binder and an admixture made of a material or a polymer resin and a soil cement 13 formed by mixing these with water are sprayed.

Therefore, according to the construction method of the fifth aspect, it is possible to use the earth and sand generated at the construction site as it is, and to sufficiently exhibit the sabo function, as well as the sabo wall adapted to the environment and scenery around the construction site. It is possible to surely create the building.

In order to solve the above-mentioned problem, the means adopted by the invention according to claim 6 relates to the construction method according to claim 4 or claim 5, wherein “the cement-based solidifying material is added to the cement for soil improvement. The use of a solidifying material ", thereby achieving the same object as the object of claim 4 or claim 5. In addition, even if the locally generated sediment contains organic matter, A sabo wall with functions can be created.

[0038]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a sand barrier according to an embodiment of the present invention; FIG.
Since the invention substantially includes the invention according to each of the above claims, including its construction method, the following description will focus on the sandproof wall 10 of this embodiment.

FIG. 1 shows an example in which a large number of sand barriers 10 according to claims 1 to 3 are installed on a beach, and FIG. An example is shown in which a number of sand barriers 10 according to the invention are installed. As shown in FIGS. 1 and 2, the sand barrier 10 according to the present invention has good workability if it is formed as a straight one, but may be implemented as a curved one according to the construction site. Needless to say, it is good.

The sand barrier 10 has a general height of about 0.5 m to 1.5 m to prevent the sand from moving due to the wind and to prevent a person standing in between. The height is such that the part is visible or does not disturb the view seen from the road side. Of course, in the case of the sand barrier 10 on the side of the road shown in FIG. 2, it is often sufficient to have a height of, for example, about 3 meters in order to prevent noise from the road. obtain. Further, as shown in FIG. 1, it is preferable that the interval between the sandproof walls 10 is such that at least a passage 14 through which a person can pass is formed. This is because the sand barrier 10 should not obstruct a person who wants to descend to the seaside.

The sand barrier 10 according to the present invention as described above.
By installing the windbreak or sand protection forest or plantation 20 on the front side of the wind, it can also protect these sand protection forests or plantation 20 and maintain the local landscape as a whole. it can.

Each of the sand control walls 10 is composed of one or more types of soil and sand generated locally, a binder and an admixture made of a cement-based solidifying material or a polymer-based resin, and the like.
They may be formed only by spraying soil cement 13 formed by mixing them with water, that is, without requiring the base layer 11 shown in FIGS. 3 to 5 (in the case of claim 1). It is formed as shown in FIGS. 3 to 5 (case of claim 2).

That is, the sand-proofing wall 10 shown in FIG. 3 first collects locally generated earth and sand like "ridges" to form a base layer 11, and sprays soil cement 13 on the base layer 11 to spray the surface layer 12 thereon. It is formed so that the general height is about 0.5 to 1.5 meters as a whole.

The soil cement 13 includes one or more kinds of soil and sand generated in the field, a binder and an admixture made of a cement-based solidifying material or a polymer resin, and the like.
These are formed by mixing them with water, and are sprayed toward the base layer 11 by, for example, a nozzle shown in FIG. 5 using a spraying device conventionally used in a spraying method.

The cement-based solidifying material constituting the soil cement 13 has a sufficient hydration reaction when the organic matter is not mixed in the locally generated earth and sand. A solidification material is used, but when a large amount of organic matter is mixed in locally generated soil, a cement solidification material for soil improvement is used.

Further, if the locally generated soil contains a large amount of clayey components, or if the above-mentioned cement-solidifying material for soil improvement contains an organic matter that cannot be expected to undergo a hydration reaction, the cement However, in such a case, a binder (for example, polyvinyl alcohol) composed of a polymer resin or the like is used instead of the cement-based solidifying material, and the binder is used as a soil cement. 1
It is the material that constitutes No. 3.

The soil cement 13 may be used by mixing an admixture therein. The admixture is
It suppresses the separation of locally generated soil and cement-based solidified material, and also suppresses the adhesion between the locally generated soil and cement-based solidified material.
In order to smoothly carry out the pumping and the ejection from the nozzle of No. 3, a high molecular polymer such as a ligninsulfonic acid compound or a polycarboxylic acid compound, or a crosslinked polymer is used.

FIG. 4 shows a sand-proofing wall 10 which is made into a surface layer 12 by spraying the above-mentioned soil cement 13 around a base layer 11 formed by incorporating bamboo, miscellaneous wood or the like into a construction site like a fence. is there. In this case, the base layer 11 is formed by using various kinds of trees and the like which can be obtained near the beach or desert where the sand barrier wall 10 is to be constructed, or bamboo which has been left in large quantities in recent years. Or to make effective use of surplus products. Of course, even if these bamboos, miscellaneous trees and the like are corroded inside the sand protection wall 10, they will return to the seashore or desert soil as they are, and will not destroy the natural environment.

FIG. 5 shows a sand-proof wall 10 in the case where a concrete layer produced in advance at a site or a factory is used as the base layer 11. Soil cement 1
In order to spray the surface layer 3 onto the base layer 11 to form the surface layer 12, a base layer 11 having a certain strength is necessary. Base layer 1 as shown in FIG.
It is of course possible that 1 cannot be procured locally. In such a case, if such a concrete base layer 11 is used, the installation work can be easily performed.

[0050]

As described in detail above, first, claim 1 is described.
Alternatively, in the invention according to claim 2, as exemplified in the above embodiment, “a sand protection wall 10 for preventing movement of sand on a beach or a desert area, at least a surface layer 12 of which is generated locally. Soil cement 1 obtained by mixing water or a mixture of one or more kinds of soil and sand and a binder such as a cement-based solidifying material or a polymer-based resin.
3 or "Sandproof wall 1 for preventing movement of sand on a beach or a desert area."
0, which is made of a natural material such as bamboo or miscellaneous wood, or locally generated earth and sand, or a base layer 11 previously formed of concrete or the like at a site or a factory.
And a surface layer 12 sprayed around the base layer 11.
Is formed by soil cement 13 made by mixing water and a single or plural types of soil and sand generated locally and a binder made of a cement-based solidifying material or a polymer-based resin. ] Has a structural feature, whereby the soil and sand generated at the construction site can be used as it is, and the sabo function can be sufficiently exhibited. Can be provided.

According to the third aspect of the present invention, regarding the sandproof wall 10 according to the second aspect, "the use of a cement-solidifying material for soil improvement as a cement-based solidifying material".
Therefore, in addition to having the same effect as the sand protection wall 10 of claim 1 or claim 2, the sand protection wall 10 can be sufficiently constructed even if the locally generated soil contains organic matter. You can do it.

The above sand control wall 10 is constructed by the construction method according to claim 4 or 5, that is, "a single sand protection wall 10 for preventing movement of sand on a beach or a desert area is used. Or that a plurality of types of earth and sand, a binder and an admixture made of a cement-based solidifying material or a polymer-based resin, and the like, and that the soil cement 13 formed by mixing these with water were sprayed, Or, "Sand protection wall 1 for preventing movement of sand on beaches and desert areas.
0 is formed including the following steps.

(1) A step of forming a base layer 11 by using natural materials such as bamboo or miscellaneous wood or locally generated earth and sand, or at site or in a factory or the like by using concrete or the like; (2) Around the base layer 11 The surface layer by spraying soil cement of one or more types generated in the above, a binder and an admixture made of a cement-based solidifying material or a polymer-based resin and the like, and mixing these with water to form a soil cement 13 12), the soil and sand generated at the construction site can be used as it is, and the sabo function can be fully exhibited. Can be performed reliably.

Further, in the invention according to claim 6,
Regarding the construction method according to the fifth aspect, "the use of a cement-solidifying material for soil improvement as a cement-based solidifying material" can exert the same effect as that of the fifth aspect of the present invention, and can also be carried out locally. Even if the soil contains organic matter, the sabo wall 10 having a sufficient function can be formed.

[Brief description of the drawings]

FIG. 1 is a partial perspective view when a sand barrier according to the present invention is formed on a beach.

FIG. 2 is a partial perspective view of a case where the sand barrier is formed on a side of a road constructed in a desert area.

FIG. 3 is an enlarged vertical sectional view showing the first embodiment when the sand barrier has a base layer.

FIG. 4 is an enlarged vertical sectional view showing a second embodiment when the sand barrier has a base layer.

FIG. 5 is an enlarged vertical sectional view showing a third embodiment when the sand barrier has a base layer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Sand control wall 11 Base layer 12 Surface layer 13 Soil cement 14 Passage 20 Tree planting

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Eiji Yoshino 3-55, Kawamacho, Ogaki-shi, Gifu F-term in Ibiden Green Tech Co., Ltd. 2D001 PA08 PD12 PE01

Claims (6)

[Claims] Claims: 1. A sand control wall for preventing movement of sand on a beach or a desert area, wherein at least a surface layer of the sand control wall is made of one or more kinds of earth and sand generated locally and a cement-based solidifying material or A sandproof wall using locally generated earth and sand, which is formed by soil cement made by mixing a binder made of a polymer resin or the like with water. 2. A sand protection wall for preventing movement of sand on a beach or a desert area, which is formed of natural materials such as bamboo or miscellaneous wood or locally generated earth and sand, or concrete or the like at a site or a factory. It is configured as having a base layer formed in advance and a surface layer sprayed around the base layer, and at least the surface layer is formed of one or more kinds of soil and sand generated locally, and a cement-based material. A sandproof wall using locally generated earth and sand, which is formed by soil cement formed by mixing a solidifying material or a binder made of a polymer resin or the like with water. 3. The sand barrier according to claim 1, wherein a cement solidifying material for soil improvement is used as the cement solidifying material. 4. A sand protection wall for preventing movement of sand on a beach or a desert area is formed by bonding one or more kinds of earth and sand generated locally and a cement-based solidifying material or a polymer-based resin or the like. A method for constructing a sand-proofing wall, characterized by spraying a soil cement made by mixing an agent with water. 5. A method for constructing a sand control wall, comprising forming a sand control wall for preventing movement of sand on a beach or a desert area, including the following steps. (1) A step of forming a base layer at a site with natural materials such as bamboo or miscellaneous wood or locally generated earth and sand, or at a site or a factory with concrete or the like; A step of forming a surface layer by spraying soil cement formed by mixing a plurality of types of earth and sand and a binder such as a cement-based solidifying material or a polymer-based resin with water. 6. The method according to claim 4, wherein a cement solidifying material for soil improvement is used as the cement solidifying material.