JPH073798A - Method of banking - Google Patents

Abstract

PURPOSE:To manufacture a sandbag substitute for use in banking which readily sticks to the natural ground and is slip-free and lightweight by injecting or feeding a flexible foaming material into a bag made of a cloth of fibers. CONSTITUTION:A flexible foaming material 14 such as air mortar or air milk is injected or fed by a pump into a bag 9 made of a cloth of fibers having one end open, and the opening of the bag 9 is closed to form a lightweight banking material 8 in the same manner as with a sandbag. The lightweight banking material 8 has the advantages of being extremely lightweight, resistant to compression and water and self-supporting, and sticks to the natural ground as readily as a sandbag, and enables a slip-free, stable state; a stack of lightweight banking materials 8 alone or a stack of materials 8 with earth and sand is possible.

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 that requires earth pressure reduction, and an embankment method that requires drainage.

[0002]

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

FIG. 5 and FIG. 6 show an example of the widening embankment. A cubic Styrofoam block (EPS) block 1 is stacked on a ground 2 which is an inclined ground, and further,
Site 3 was created by applying soil 3 on it. Reference numeral 5 in the figure is a retaining wall for fixing the side portions of the stacked styrofoam blocks 1.

At the boundary between the styrofoam block 1 and the natural ground 2, drainage material 6 such as crushed stone is considered in consideration of drainage of spring water and seepage water.
Backfill with.

[0005]

In the case of FIG. 5, since there is a possibility that sliding will occur between the styrofoam block 1 and the ground 2, the step cutout portion 7 is provided as shown in FIG. It is necessary to prevent the boundary part of the ground 2 from becoming a potential slip surface. In FIG. 6, the chain line indicates the original slope of the natural ground 2.

As described above, in the EPS method, by using the polystyrene foam block 1 as the embankment material, it is possible to effectively utilize the characteristics of the material such as ultra-lightness, compression resistance, water resistance, and self-supporting property when the blocks are stacked. However, since the styrofoam block 1 is fixed as a rectangular block body as described above,
Clearance is required to reduce the gap between and.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional examples and to have the same advantages as the EPS method such as ultra-lightness, compression resistance, water resistance and self-sustaining property, and to have the same ground level as sandbags. The object is to provide a banking method that is well-known and that can obtain a stable state without slipping.

[0008]

In order to achieve the above object, the present invention comprises injecting or feeding a flexible foaming material such as air mortar or air milk into a bag made of cloth or fiber. The gist is that the lightweight embankment material is arranged as a sandbag substitute, and the lightweight embankment material is deposited as a single body, or the lightweight embankment material is mixed with earth and sand.

[0009]

According to the present invention as set forth in claims 1 and 2, the 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 fibers. The material inside the bag has super light weight, compression resistance, and water resistance. Moreover, since this lightweight embankment material is covered with the bag, it has an appropriate deformability. , It becomes the same as the sandbag and adapts to the shape of the ground, and even when they are stacked, it becomes difficult to form a gap between them.

According to the third aspect of the present invention, in addition to the above action, a void can be formed to reduce the amount of the foaming material such as air mortar or air milk used and enhance the drainage property by the void. .

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows a first embodiment of the embankment method of the present invention, in which the same components as those in FIGS. 5 and 6 showing the conventional example are designated by the same reference numerals.

According to the present invention, the lightweight embankment material 8 is used. The lightweight embankment material 8 is placed in a bag 9 made of cloth or fiber having an opening at one end, through which air mortar, air milk, etc. The flexible foamable material 14 is injected or fed.

Air mortar is a mixture of materials as shown in FIG. 7, and is filled in the bag 9 through a pump. Further, air milk is mixed with the material as shown in FIG. 8 and is filled in the bag 9 via a pump. Table 1 below is a blending table of these air mortars or air milks.

[0014]

[Table 1]

In addition to this, the foamable material 14 may be a mass or a collection of granular ones. Like the air mortar and the like, the foamable material 14 is put through the opening of the bag 9 and then the opening of the bag 9 is closed to form a sandbag. Configure the same as.

The lightweight embankment material 8 as a single body was deposited on the ground 2, which is a sloping ground, in a plurality of steps, and the soil 3 was applied on the ground 2, thereby constructing the site 4. Reference numeral 5 in the drawing is a retaining wall for fixing the side portions of the stacked lightweight embankment materials 8.

The lightweight embankment material 8 has appropriate flexibility because the inner material is covered with the bag 9. Therefore, the material at the boundary of the natural ground 2 is deformed in the same manner as the sandbag and adapted to the shape of the natural ground 2. Also, the things stacked on top of each other are in close contact with each other in a state where it is difficult to form a gap.

As a construction procedure, when air mortar or air milk or the flexible foaming material 14 is sent into the bag 9 in advance near the site and stacked after solidification and strength development, the bag 9 alone or in a continuous bag is used. There is a case where 9 is laid at the deposition site, and then flexible foaming material 14 such as air mortar or air milk is fed into the laying bag.

In such a construction procedure, it is necessary to lay the next bag after the strength in the first bag has been developed, which requires a curing period. Has already developed strength and can immediately stack the next layer.

FIG. 2 shows a second embodiment of the present invention.
Light embankment material 8 shall be built up with sand and sand.
Sediment 10 was deposited on the layer in which the layers were arranged to form a sediment layer.

The lightweight embankment material 8 is deformed and fits in the same manner as sandbags, and in this way, it is possible to stack with earth and sand.

The bag 9 may have various shapes such as a pillow shape, a spherical shape, a sheet mat shape, a concave-convex mat shape, and a donut shape, and may be a single piece or a connected piece. Furthermore, as a third embodiment, a lightweight embankment material 8
Is the size of 1 m ³ and this is large sand / remaining soil
May be interspersed between 11.

FIG. 4 shows a fourth embodiment of the present invention, in which the road 12 is constructed by embankment-like embankment.
When the local ground is soft ground 13, the soft ground 13 does not have to be affected by subsidence, and the weight is changed by blending the foaming material 14 that constitutes the lightweight embankment material 8 and mixing with earth and sand, It is also possible not to be affected by buoyancy.

[0024]

As described above, the embankment method of the present invention is
It has the advantages of ultra-lightness, compression resistance, water resistance, and self-supporting property similar to the EPS method that uses expanded polystyrene blocks as the embankment material, and, like sandbags, it has a good familiarity with the ground and does not slip. A stable state can be obtained.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional side view showing a second embodiment of the embankment method of the present invention.

FIG. 3 is a vertical side view showing a third embodiment of the embankment method of the present invention.

FIG. 4 is a vertical side view showing a fourth embodiment of the embankment method of the present invention.

FIG. 5 is a vertical sectional side view showing an example of an EPS method as a conventional example.

FIG. 6 is a vertical cross-sectional side view showing another example of the EPS method as a conventional example.

FIG. 7 is an explanatory diagram when air mortar is used.

FIG. 8 is an explanatory diagram when air milk is used.

[Explanation of symbols]

 1 ... Styrofoam block (EPS) block 2 ... Ground 3 ... Soil 4 ... Site 5 ... Soil retaining wall 6 ... Drainage material 7 ... Drainage section 8 ... Lightweight embankment material 9 ... Bag 10 ... Sediment 11 ... Large sand / remaining soil 12 ... Road 13 ... Soft ground 14 ... Foamable material

Claims (3)

[Claims] 1. A lightweight embankment material obtained by injecting or feeding a flexible foaming material such as air mortar or air milk into a bag made of cloth or fiber is arranged as a sandbag substitute. Embankment method. 2. The embankment method according to claim 2, wherein the lightweight embankment material is deposited as a single body. 3. The embankment method according to claim 3, wherein the lightweight embankment material is laminated with earth and sand.