Soil bag

Abstract

To stack up soil bags to prevent inundation when constructing the pedestal of a water storage tank and a weir, and to provide soil bags suitable for emergency response to earthquakes and flood damage, and for urban floods caused by concentrated heavy rain. 【Solution means】In a soil bag 1 that is used as a soil bag by having its lower end 9 closed and an opening 2 at its upper end 3, and into which earth and sand are poured through the opening 2, the opening 2 is formed by folding the upper end folding part 4 outward, and the lower end 9 is provided with a lower end folding part that is folded and sewn together to form a closing part 12, and when the closing part 12 is spread out, a flat bottom surface in a square shape is formed.

Description

Technical Field

[0001] The present invention relates to sandbags that can be used as a simple base for a water storage tank by filling and stacking earth and sand in the bag, or can be used as emergency measures during floods or for civil engineering in general.

Background Art

[0002] As described in Non-Patent Document 1, there is a sandbag that has a closed lower end and an opening at the upper end, and is used as a sandbag by injecting earth and sand through the opening. The upper end of the sandbag is provided with an opening through which a tubular hole is formed by folding and sewing the upper end folding portion inward, and the lower end folding portion is folded and sewn to form a closed portion. There is a sandbag in which the closed portion is expanded to form a square bottom surface.

Prior Art Documents

Non-Patent Documents

[0003]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the case of the one described in Non-Patent Document 1, since the upper end folding portion of the opening is folded inward and the through-hole becomes narrow, when the opening is closed by pulling the mouth string, the upper end is pressed from the upper end folding portion and resistance (friction) is generated, making it difficult to quickly tighten.

[0005] Furthermore, when the closed portion of the sandbag is expanded, there is a problem with adhesion because the convex portion of the lower end sewing portion protrudes outside the square bottom surface.

Means for Solving the Problems

[0006] In order to achieve the above object, the present invention provides a sandbag having a closed lower end and an opening at the upper end, and being used as a sandbag by filling earth and sand through the opening. The upper end is bent outward from the upper folding part and sewn together, eliminating obstacles inside the opening and reducing the burden due to friction in the through-hole. The lower end sewing part is folded inward and sewn together, and the closed part is expanded to form a flat bottom surface in a square shape. This is the sandbag.

Effect of the Invention

[0007] According to the present invention, the lower end is folded inward and sewn together to form a closed part. The closed part is expanded to form a flat bottom surface in a square shape (a state without unevenness, smooth). Further, the upper end of the opening is bent outward and sewn together, so that the drawstring can slide smoothly in the through-hole, enabling quick closing. After filling earth and sand, it can be easily formed into a hexahedral square sandbag. When stacking the sandbags, the flat bottom surface of the sandbag allows for closer contact with the upper and lower surfaces of the sandbag and the ground. Therefore, by eliminating the gaps around the hexagonal sandbags, it becomes an integrated structure of the square sandbag, reliably preventing water infiltration, and enabling quick work for installing a water stop wall, disaster recovery work, and the pedestal of an elevated tank, making it suitable for emergency response.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0009] Hereinafter, the clay bag according to the embodiment of the present invention will be described in detail with reference to the drawings. The invention is not limited by this embodiment, and the constituent elements in the embodiment include those that can be easily assumed by those skilled in the art or those that are substantially the same.

[0010] FIG. 1 shows a clay bag inflated so that earth and sand can be put in, and FIG. 2 shows the state of the clay bag before it becomes a clay bag with a square bottom. FIG. 3 shows a folding method for making the bottom inside the clay bag 1 into a flat square shape. The clay bag 1 is cylindrical, and its material is preferably a gunny sack made of natural plant fiber from an environmental aspect, or a UV (ultraviolet) cut product made of durable PE (polyethylene). Durability is preferably such that when earth and sand weighing about 20 kg are put in and the opening 2 is closed, when dropped 10 times from a height of 1 m, no earth and sand comes out of the clay bag 1.

[0011] The clay bag 1 shown in FIG. 4 has a flat state in which the square bottom surface before inflation is folded, and an upper end folding part 4 is provided at the upper end part 3. The upper end folding part 4 is bent outward, and the upper end sewing part 5 is sewn with a thread to create a mouth-through hole 6 in a cylindrical shape.

[0012] In order to make the bottom of the clay bag 1 into a rectangular parallelepiped shape, as shown in FIG. 3, by expanding and folding about 10 cm in the vertical direction in the drawing view from the lower end sewing part 11 that becomes the bottom surface, corners 13 and 14 are formed. Further, the vertex 17 where the lower end sewing part 11 on the left side in the drawing view and the left ridge line 15 intersect is folded inward along the left corner folding line 19 and overlapped. The folded tip 20 is at a position about 10 cm inside the left corner folding line 19. The folded part is sewn with the left sewing line 22 on the side surface. The left ridge line 15 disappears, and a new left ridge line 16 is generated.

[0013] The same applies to the right side. The vertex 18 formed by the lower end stitching part 11 and the right ridge line 23 is folded along the right-angle folding line 25. The folded tip 21 is positioned approximately 10 cm inside the right-angle folding line 25. The folded part is sewn together with the right stitching line 26. The right ridge line 23 disappears and a new right ridge line 24 is formed.

[0014] As described above, the sandbag 1 becomes a sandbag 1 with a gusseted bottom where a rectangular bottom surface 27 is formed. Note that it is only necessary to form a rectangular bottom surface 27, and it may be of a horizontal gusset type with a margin or a bottom gusset type with a margin at the bottom like a plastic bag.

[0015] Figure 5 shows the details of the opening 2 of the sandbag 1. The mouth string 8 is inserted into the tubular mouth-through hole 6, inserted from the cut part 7, goes around once, and comes out on the opposite side. Figure 6 shows the cross-sectional shape of the sandbag 1. The opening 2 has the upper end part 3 on the outside, and the upper end stitching part 5 is sewn with a thread, and the mouth string 8 passes over it. The lower side is sewn together with the lower end stitching part 11 on the inner side, and a closing part 12 is formed with the bottom surface 27 being flat.

[0016] Figure 7 shows a state where soil is put into the sandbag 1 and the mouth string 8 is closed, resulting in a hexagonal and square sandbag.

[0017] As described above, according to the sandbag 1 of the present embodiment, it can be used not only for flood countermeasures, emergency countermeasures, and general civil engineering work during floods, but also taking advantage of its gusseted bottom, it can be used as a simple flower bed or a field for a home garden.

[0018] In addition, since the sandbag 1 has a gusseted bottom, it is easy to stack it high in a square column shape in a narrow place. Compared with the conventional sandbag that is entirely round, it has better stability and less risk of falling. Furthermore, it is possible to stack it higher with less soil.

[0019] Since the drain outlet of a normal water storage tank is at a low position, by installing it on the sandbag, it can be used as domestic water during water cut-off due to typhoons, earthquakes, etc.

[0020] In addition, by stacking the soil bags and using them as an elevated water storage tank, even when the building is flooded during a disaster, it is possible to wash away columns, furniture, mud, etc. soiled with pressurized water.

[0021] Even during water cut-off in extremely hot weather or drought, it can be used as emergency water for daily life and for cultivating flowers and vegetables.

[0022] It is desirable that the dimension of one piece of the soil bag, where the closed part is expanded to form a square bottom surface, is formed within 100 mm or more and 400 mm or less.

[0023] It is desirable that the weight of the soil bag is formed within 1 g or more and 100 g or less.

[0024] When inflated and expanded into a rectangular parallelepiped shape, it is desirable that it can stand on its own.

[0025] When inflated and standing on its own in a rectangular parallelepiped shape, it is desirable that the overall height is formed within 400 mm or more and 600 mm or less.

[0026] When inflated and expanded and filled with earth and sand, it is desirable that it becomes a square or rectangular parallelepiped-shaped soil bag.

[0027] When using a square and rectangular parallelepiped-shaped soil bag as a base for a simple elevated water tank (tank), for example, when placing a square soil bag as a pedestal at the bottom of a water storage tank (water tank, water bucket, water storage tank, water tank) for a 300 L capacity and using it, it is desirable that it can withstand the weight when 300 L of water is put in.

Explanation of Signs

[0028] 1 Soil bag 2 Opening 3 Upper end 4 Upper end folding part 5 Upper end sewing part 6 Through hole 7 Notch 8 Mouth string 9 Lower end part 10 Lower end folding part 11 Lower end sewing part 12 Closing part 13, 14 Corner parts 15, 16 Left ridge lines 17, 18 Vertices 19 Left corner folding line 20, 21 Tips 22 Left sewing line 23, 24 Right ridge lines 25 Right corner folding line 26 Right sewing line 27 Bottom surface

Claims

1. A sandbag having a cylindrical body with a closed lower end and an opening at an upper end, into which soil and sand are poured to be used as a sandbag, the lower end portion being folded and sewn together to form a closed portion; The upper folded portion is folded outward and sewn together to form a cylindrical opening having a through hole. A sandbag characterized in that the closing portion is expanded to form a rectangular bottom surface.

2. 2. The sandbag according to claim 1, wherein the closing portion is expanded to form a flat rectangular bottom surface.

3. A sandbag as described in any one of claims 1 and 2, characterized in that the dimensions of each piece of the closing portion that is expanded to form a rectangular bottom surface are each formed with a length of 100 mm or more and 400 mm or less.

4. 4. The sandbag according to claim 1, wherein the sandbag has an overall weight of 10 g or more and 100 g or less.

5. 5. The sandbag according to claim 1, wherein the closing portion is expanded to form a rectangular bottom surface, and the sandbag can stand on its own.

6. 6. The sandbag according to claim 1, wherein the height of the sandbag when standing on its own is between 400 mm and 600 mm.

7. 7. The sandbag according to claim 1, which becomes a hexahedral sandbag by pouring soil therein and tightening the string at the opening.

8. A sandbag as described in any one of claims 1 to 7, characterized in that the sandbag formed by pouring soil into the opening is used as a base for a water tank having a capacity of 100 L or more.

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