JP3177723B2 - Embankment method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embankment method as a soil stabilization method for soft ground, an embankment method requiring earth pressure reduction, and an embankment method requiring drainage.

[0002]

2. Description of the Related Art As an embankment method for soft ground, there is known an EPS method using a large expanded poly-styrene block as an embankment material.

FIGS. 2 and 3 show an example of widening embankment, in which a cubic styrofoam (EPS) block 1 is stacked on a ground 2 which is an inclined ground, and
Site 3 was created by applying soil 3 thereon. In the figure, reference numeral 5 denotes a retaining wall for fixing the side portions of the stacked Styrofoam blocks 1.

The boundary between the styrofoam block 1 and the ground 2 is provided with a drainage material 6 such as crushed stone in consideration of drainage of spring water and seepage water.
Backfill with

[0005]

In the case of FIG. 2, there is a possibility that sliding may occur between the styrofoam block 1 and the ground 2. Therefore, as shown in FIG. It is necessary to prevent the boundary of the ground 2 from becoming a potential slip surface. In FIG. 6, the chain line indicates the original slope of the ground 2.

As described above, the EPS method uses the styrofoam block 1 as an embankment material, thereby making it possible to effectively use the characteristics of the material, such as ultralightness, compression resistance, water resistance, and self-supporting property when blocks are stacked. However, since the styrofoam block 1 is fixed as a rectangular block as described above,
A gap is created between them, and leveling is required to reduce the gap.

An object of the present invention is to solve the disadvantages of the conventional example, and have the same advantages as the EPS method, such as ultra-lightweight, compression resistance, water resistance and self-sustainability. It is an object of the present invention to provide an embankment method in which a stable state without slippage can be obtained.

[0008]

Since the present invention SUMMARY OF THE INVENTION, to attain the aforementioned object, foaming such as an air mortar or air milk through the pump to the bag from the opening of the bag to the end fabric or fibers having an opening with a material the material was poured or pumped, to close the opening of the bag, to manufacture a lightweight fill material made in the same manner as sandbags, lightweight embankment material as that of 1 m ³ sizable, which of Daisuna-surplus soil The point is that they are scattered between them.

[0009]

According to the first aspect of the present invention, a lightweight embankment material is obtained by injecting or feeding a foaming material such as air mortar or air milk into a bag made of cloth or fiber via a pump. It is a material in the bag that has ultra light weight, compression resistance, water resistance, and moreover,
This lightweight embankment material has an appropriate deformability because the material inside is covered with a bag, and is deformed in the same manner as a sandbag to conform to the shape of the ground.

[0010] Further, by scattered between the large sand and the residual soil, the amount of foaming material such as air mortar or air milk can be reduced, and the drainage can be enhanced by the voids.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a first embodiment of an embankment method according to the present invention, in which the same components as those in FIGS. 2 and 3 showing the conventional example are denoted by the same reference numerals.

In the present invention, a lightweight embankment material 8 is used. The lightweight embankment material 8 is placed in a bag 9 made of cloth or fiber having one end opened, through which air mortar or air milk or the like. The foamable material 14 is injected or fed.

Air mortar is a mixture of materials as shown in FIG. 4 and is filled into the bag 9 via a pump. In addition, air milk is filled into the bag 9 via a pump with a composition of materials as shown in FIG. Table 1 below is a composition table of these air mortars or air milks.

[0014]

[Table 1]

The foamable material 14 may be a collection of a lump or a granular material. In addition, like the air mortar, the foamable material 14 is put through the opening of the bag 9 and then the opening of the bag 9 is closed. The configuration is the same as.

The lightweight embankment material 8 is made to have a size equivalent to 1 m ³ , and is scattered between large sand and remaining soil 11.
Site 3 was created by applying soil 3 thereon.

In the figure, reference numeral 5 denotes a retaining wall for fixing the side portion of the stacked lightweight embankment material 8 and the earth and sand 10 to each other.

Since the material of the lightweight embankment 8 is covered with the bag 9, it does not fall apart as a whole even after curing , and has an appropriate deformability . Therefore, the material at the boundary of the ground 2 is deformed in the same manner as the sandbag, and is adapted to the shape of the ground 2. In addition, those stacked on each other are closely attached in a state where a gap is hardly formed.

As a construction procedure, a foaming material 14 such as air mortar or air milk is used near the site in advance.
To the bag 9 and stack after solidification and strength development,
In some cases, a single bag 9 or a continuous bag 9 is laid at the deposition site, and then a foamable material 14 such as air mortar or air milk is fed into the laid bag.

In such a construction procedure, the next bag must be laid after the strength in the first bag has developed, and a curing period is required. Has already developed strength, and the next layer can be stacked immediately.

The lightweight embankment material 8 deforms and adapts in the same manner as the sandbag, and thus can be cross-product with the earth and sand.

Further, the shape of the bag 9 can be various shapes such as a pillow shape, a spherical shape, a sheet mat shape, an uneven mat shape, a donut shape, and there are cases where each is connected to a single unit or connected.

[0023]

As described above, the embankment method of the present invention is
It has advantages such as ultra-lightweight, compression resistance, water resistance and self-sustainability as well as the EPS method using a styrofoam block as the embankment material. A stable state can be obtained.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing a first embodiment of an embankment method according to the present invention.

FIG. 2 is a longitudinal sectional side view showing one example of an EPS method as a conventional example.

FIG. 3 is a vertical sectional side view showing another example of the EPS method as a conventional example.

FIG. 4 is an explanatory diagram in the case of using air mortar.

FIG. 5 is an explanatory diagram in the case of using air milk.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Styrofoam (EPS) block 2 ... Ground 3 ... Covered soil 4 ... Site 5 ... Retaining wall 6 ... Drainage material 7 ... Stepped section 8 ... Lightweight embankment material 9 ... Bag 10 ... Earth and sand 11 ... Large sand and residual soil 12 ... Road 13: Soft ground 14: Foamable material

Claims (1)

(57) [Claims] 1. A foaming material such as air mortar or air milk is injected or fed into the bag through a pump from a bag or bag made of cloth or fiber having one end opened, and the bag is closed. , manufactured lightweight fill material made in the same manner as sandbags, lightweight embankment material as that of 1 m ³ sizable, embankment method characterized by interspersed it between Daisuna-residual soil.