JPS6375208A - Loading of sand bag - Google Patents

Abstract

PURPOSE:To obtain a three-dimensional sand bag which can withstand the force of flowing water by a method in which adjoining sand bags each formed by packing a high-water absorptive resin into water-permeable cloth bag are fixedly stacked up by means of fixers. CONSTITUTION:Holes 4 are formed in the corners of the surface of a sand bag 2 stacked up on the ground's surface 1, and a hole 6 is also formed in almost the center of the surface of the sand bag 2. The sand bag 2 is formed by packing a high-water absorptive resin into a water-permeable rectangular prism cloth bag. Steel pins 8 are thrust through the holes 4 of the corners of the bag 2 and their tip are driven into the ground's surface to fix the adjacent sand bag 2. Since the sand bags 2 are stacked up on the ground's surface when the high-water absorptive resin is dried, the labor and time to be required for the construction can thus be greatly reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for loading sandbags made by filling bags made of water-permeable cloth material with a superabsorbent resin material.

[Conventional technology]

Conventionally, there is a method of loading soil in order to construct an embankment.

Since sandbags are heavy due to the earth and sand they are filled with, the weight of the sandbag itself allows it to withstand the force of water flow applied to the embankment.

[Problem that the invention seeks to solve]

The above-mentioned conventional sandbags filled with earth and sand are heavy even when loaded, so they can withstand the force of water flow, but sandbags made of water-permeable fabric bags filled with super absorbent resin are The weight is close to 11 of the weight of water obtained by absorbing and gelling the superabsorbent resin material. However, even if they were loaded, there were problems such as the levee built to prevent water flow from collapsing.

[Means for solving problems]

The method for loading sandbags according to the present invention involves fixing adjacent sandbags using a fixing means provided on a sandbag made of a water-permeable fabric bag filled with a superabsorbent resin material or another fixing means. This is a method of loading.

[Effect]

In this invention, since the sandbags to be loaded are fixed, the superabsorbent resin material of the sandbags becomes a water-absorbing gel and becomes a three-dimensional sandbag. It can withstand the force of force and not be swept away.

〔Example"〕

FIG. 1 is a side view of an embodiment of the invention, and FIG. 2 is a plan view thereof. In both figures, (1) is the ground surface, (2) is the sandbag loaded on the ground surface (1), and (4) is the sandbag loaded on the ground surface (1).
) is a hole provided at each corner of the surface of the sandbag (2), and (6) is a hole provided approximately in the center of the surface of the sandbag (2).
) are also provided with holes at positions corresponding to holes (4) and (6). (8) is an iron bottle that has been passed through the hole (4) in the corner of the sandbag (2) and the tip is driven into the ground (1).

Note that the sandbag (2) is a rectangular parallelepiped bag made of water-permeable cloth material and filled with a highly water-absorbent resin material. The water-permeable cloth-like material is made of materials such as natural fibers, artificial fibers, metals, mineral fibers, etc.
00 mesh woven fabrics, knitted fabrics, and woven fabrics. Alternatively, it may be formed by heat-sealing a sheet of thermoplastic resin such as polyethylene or polypropylene. In that case, pass water through the sandbag (2), and make holes in the bag so small that the superabsorbent resin placed in the sandbag (2) will absorb the water and turn into a water-absorbing gel, preventing it from becoming exposed. The most suitable material in terms of strength is a woven fabric made of slit yarn made by slitting a stretched thermoplastic resin film or sheet such as polypropylene. There is no.

The super-absorbent resin material to be filled into Father's pouch (2) refers to a material that rapidly absorbs a large amount of water and turns it into a gel, and includes super-absorbent resins and molded mixtures of super-absorbent resins and fibrous materials, etc. be. For example, superabsorbent resins include (hydrophilic and/or water-soluble monomers) and/or (hydrophilic and/or water-soluble monomers due to hydrolysis).
or a polymer of water-soluble monomer) (A) and polysaccharide (B), a polymer of (A) and a crosslinking agent (0), or a polymer of (A), (B), and (0). These hydrophilic cross-linked polymers may be used in combination of two or more types.These hydrophilic crosslinked polymers are polymers obtained by polymerization and optionally hydrolysis as a component.
Examples of the polymers mentioned above include hydrolysates of starch-acrylonitrile graft copolymers, cellulose-acrylic acid graft copolymers, and salts thereof. The polymers (A) and (C) are polyacrylamide crosslinked with a divinyl compound (such as methylenebisacrylamide) and its partial hydrolyzate, crosslinked poval, JP-A-52-14689, JP-A-52 Examples include saponified crosslinked vinyl ester-unsaturated carboxylic acid copolymer and crosslinked polyethylene oxide described in Japanese Patent No. 27455. Polymers obtained by polymerizing (A), (B), and (C') as essential components and hydrolyzing if necessary are disclosed in Japanese Patent Publication No. 53-46199, Japanese Patent Publication No. 55-46200, and Special Public Service 1977
Examples include a crosslinked starch-acrylamide graft copolymer, a crosslinked starch-acrylic acid graft copolymer, and salts thereof, which are described in Japanese Patent No. 4462.

The particle size of the polymer particles is usually 5 to 5000μ or less, preferably 20 to 500μ, and the polymer particles are usually 60μ.
It has a water absorption power of 1/g or more. The mixture molded product of a super absorbent resin and a fibrous material is a mixture of the above super absorbent resin and a fibrous material, or a pressure molded product of the above super absorbent resin and a fibrous material. Fibrous materials include natural fibers (vegetable fibers include cellulose, such as paper, cotton, straw, sawdust, grass charcoal, and pulp; animal fibers include silk and wool);
Examples include organic fibers such as artificial fibers (cellulose-based ones such as rayon, acetate, etc.), synthetic fibers (polyamide, polyester, acrylic, etc.), inorganic fibers such as asbestos, perlite, and combinations of two or more of these. Among these, preferred are fibers or vegetable fibrous substances that become fibrous in water (hereinafter organic fibrous substances are simply referred to as fibers), such as paper, crushed paper, cotton, pulp, and grass charcoal. be. Among these, pulverized paper is particularly preferred. It is also possible to use a form in which small pieces of unpulverized paper (for example, about 1 to 50 m) are included in the crushed paper.
In addition to the crushed paper, other fibers can be used in combination.

The ratio of crushed paper to other fibers is usually 100:1.99.
Preferably it is 100:0 to 50:50.

The fibers can be in powder form, such as finely pulverized or crushed fibers, and fibers, such as cut single fibers (usually less than 100 denier in thickness), or multiple fibers. Examples include those that are bundled, treated with a suitable sizing agent and cut, and those that are cut from other woven fabrics, non-woven fabrics, knitted fabrics, sheets (for example, paper), or those that are loosened. Although the length of the fiber is not particularly limited, it is usually α01 to 50 m, preferably α0.
01-5 cod.

In addition, the ratio of super absorbent resin to fibrous material is usually 5/9.
5 to 90/10 (weight ratio), preferably 20
/80 to 80/20.

The obtained mixture of the two is preferably pressure molded to have a bulk specific gravity of α3 g/− or more. More preferably α7g/-
This is considered to be the above. Pressure molding methods include pressure molding into pellets in a formwork at room temperature, and pressure molding into sheet, rod, or block shapes at room temperature, and then cutting or crushing into appropriate sizes. can be given. In addition, pressure molding involves heating (e.g. 20 to 150°C) and humidification (
It may be carried out under conditions (60 to 100% humidity).

The pressure during pressure molding is such that the bulk specific gravity of the obtained pressure molded product is α
It is sufficient if the pressure is 3g/- or more, usually 1~
3,000 Yu/cli, preferably 100 to 2,000 &/-. Pressure forming can be carried out using, for example, a roll press machine, a hydraulic green plate press machine, a screw press machine, or the like. Examples of roll press machines include compacting machines for wavy wool, calender machines, and briquettes! Examples include Shin.

The shape of the obtained press-molded product may be arbitrary, and includes various shapes such as a sphere, a cylinder, a cube, a rectangular parallelepiped, a cone, a pyramid, a rod, a sheet, and a roll.

The size is such that the shortest diameter of the press-molded product is usually 1051 or less, preferably 3cIp1 or less.

Due to its nature, superabsorbent resin has a strong affinity for water, and when it comes into contact with water rapidly, a water-absorbing gel is generated only on the surface, which prevents it from absorbing a large amount of water, and as a result, superabsorbent resin may not be able to effectively utilize the water absorption capacity of However, when superabsorbent resin is mixed with a fibrous material, pressure-molded, and made into granules to absorb water, even if water comes into contact with the fibrous material rapidly, the water moves inside the fibrous granules, so water is absorbed only on the surface. Gel is not formed and subsequent water absorption is not hindered.
It efficiently absorbs water hundreds to thousands of times its own weight, which is the water absorption capacity of super absorbent resin.

Also, do not leave the holes (4) and (6) directly in the fabric material (if you do, the super absorbent resin filled inside will leak out to the outside). hole (4) on the surface of
The hole on the back side of the bag at the position opposite to (6) is communicated with through a cloth-like material formed into a cylindrical shape.

FIG. 3 is a side view of another embodiment of the invention, and FIG. 4 is a partial plan view thereof. In both figures, soil 5 (2m) is
The method of forming a bag made of water-permeable cloth material by filling it with a super absorbent resin material is the same as sandbag (2) in Figure 1.
In the sandbag (2a), holes (4) and (6) are not provided, and strings (6) are attached to each corner, and as shown in Figure 3, the sandbags (2a) adjacent to each other on the left and right and up and down are tied together (6) and secure it with the outer soil string 5 (2a) (
2) is fixed to the ground surface (1) by tying it to an iron pin (8) driven into the ground surface (1).

FIG. 5 is a side view of another embodiment of the present invention, in which (2b) is a sandbag and a C44t↓net. In this example, the sandbag (2b) has holes (4),
(6) or without the string (6), load it as it is, cover the loaded soil 5 (2b) with net CI4, and connect it) Q4 is the iron pin (1) driven into the surrounding ground surface (1). 8)
It is designed to be fixed in place.

FIG. 6 is a side view of another embodiment of the invention, and FIG. 7 is a side view of another embodiment of the invention.
FIG. In both figures, adhesive cloth <10 is attached to both sides, front and back surfaces of soil 5 (2c), and sandbags (2c) loaded on the ground surface (1) are attached to adhesive cloth C.
They are fixed to each other via II.

The sandbags (2) to (2c) shown in Figures 1 to 6 above are:
When the super-absorbent resin material is in a dry state, it can be easily loaded as shown in these figures, and the super-absorbent resin material absorbs water and becomes a gel due to flowing water, forming a water-stopping bank. In addition, the iron bottle (8) used in Figures 1, 3, and 5
), C1 (i may be an iron pole, iron pile, etc.

〔Effect of the invention〕

As explained above, in this invention, a sandbag made of a bag made of water-permeable cloth material and filled with a super absorbent resin material,
vI by fixing means provided on the sandbag or by other fixing means.
Since the sandbags that are in contact with each other are fixed and loaded, a long-lasting effect is produced.

■Since the sandbags are loaded on the ground surface when the superabsorbent resin material is dry, the labor and time are significantly reduced, and since the sandbags are fixed, it is possible to easily construct a waterproof iA.

■The method for fixing sandbags is simple, and it is possible to fix sandbags to any shape of ground surface, so they can be used in any location with water-tight properties, and are protected by the power of running water.
It is possible to build a dyke that will withstand it.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the invention, FIG. 2 is a plan view thereof, FIG. 3 is a side view of another embodiment of the invention, and FIG.
5 is a side view of another embodiment of the invention, FIG. 6 is a plan view of the embodiment of the invention, and FIG. 7 is a side view thereof. In the figure, (1) is the ground surface, (2) to (2c) are sandbags, (4) and (6) are holes, (8) and α0 are iron pins, (6
) is string, a4 is net, and αQ is adhesive cloth. Figure 1 Figure 2

Claims (1)

[Claims] A method for loading sandbags in which adjacent sandbags are fixed and loaded using a fixing means provided on the sandbag or another fixing means, in which a bag made of a water-permeable cloth material is filled with a superabsorbent resin material. .