JP2002069964A - Sand bag for flood-fighting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sand bag for flood-fighting capable of rationalizing storage of the sand bags used for damming back overflowing water from a river bank or a side ditch of a road due to heavy rain or long rain and saving mandays required for installation of the sandbags. SOLUTION: Mooring strings 2 for preventing a sand bag from being carried away are tied at the four corners of an outer bag 1 woven to form a rectangular hemp bag having a specified size by a natural plant fiber strings such as hemp, and an inner bag 3 made of cotton cloth to constitute a sand bag A. An appropriate quantity of powdery acrylic polymer having partly sodium salt is contained in the inner bag of the sand bag and then, the opening of the sandbag is sealed up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sandbag for flood control which is used to stop flooding from a dike of a river or a road ditch which is generated by heavy rain due to a typhoon, heavy rain due to rainy season or abnormal weather, and the like.

[0002]

2. Description of the Related Art A conventional sandbag is mainly filled with soil or sand at a disaster site in a sandbag formed into a rectangular bag of a predetermined size with a string of synthetic resin such as vinyl. It was closed and used at the risk of flooding.

[0003]

However, since the conventional sandbags were filled with sand or sand in sandbags at the disaster site and the bags were closed, the operation required a great deal of personnel, labor and time, and was urgently needed. If the disaster site returns to a normal state and the sandbags are removed and the sandbags made of synthetic resin that cannot be reused due to damage etc. are to be disposed of by incineration, etc. There were problems such as the danger of pollution due to the generation of poison gas and dioxin.

[0004]

The sandbag for flood control of the present invention comprises:
It facilitates the construction of sandbags at the disaster site quickly and easily, and after removal of the sandbags, enables disposal without causing pollution such as generation of toxic gas or dioxin. Inside the outer bag knitted into a rectangular hemp bag shape of a predetermined size with a string, the inner bag sewn into a rectangular bag shape slightly smaller in length and width than the outer bag with a cotton cloth or the like is inserted, and the sandbag bag is inserted. A suitable amount of a powdery acrylic acid polymer partial sodium salt is accommodated in the inner bag, and the opening of the soil bag is closed to form a floodbag.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a sandbag for flood control of the present invention, a rectangular (having a length of about 35 mm) having a predetermined size is formed by a natural plant fiber string such as hemp.
(cm to 45 cm, about 58 cm to 60 cm in width) An inner bag sewn into a rectangular bag slightly smaller in length and width than the outer bag is inserted into an outer bag knitted in a hemp bag shape to form a soil bag. .

An appropriate amount (about 100 g) of a powdery acrylic acid polymer partial sodium salt is contained in the inner bag of the above soil bag, and the opening of the soil bag is closed.

The sandbag for flood control of the present invention (each about 400 g)
Is divided into a plurality of bags (about 5), sealed in plastic bags, stored and stored in order to prevent moisture of intercalated chemicals (partial sodium salt of acrylic acid polymer) and facilitate transportation of sandbags. Then, in the event of a disaster, transport to the disaster site with the plastic bag in place, open the plastic bag at the site, take out the sandbags, immerse each sandbag bag in water, the built-in chemicals contain water, It swells to a highly viscous gel (water-insoluble) enough to fill the inner bag in a short time (about 3 to 5 minutes) and weighs about 15 kg.
Use by stacking.

Since the specific gravity of chemicals in the flood prevention sandbag is light in the initial stage of use, in consideration of cases where bags are washed away, moorings for preventing runoff are provided at the four corners of the outer bag at the four corners of the outer bag. Attach a string.

After the danger at the disaster site has been removed and the sandbags have been removed, the chemicals that have set in a gel form are taken out of the sandbags and incinerated, or dissolved in about 10% saline to make them liquid (harmless). The sandbag is washed with water, dried and reused. Soil bags that cannot be reused due to damage or the like are treated by incineration or the like, but there is no fear of pollution due to the generation of toxic gas, dioxin, and the like.

[0010]

Embodiments will be described with reference to the drawings.
In FIG. 1, an outer bag 1 knitted into a rectangular (approximately 35 cm in length and approximately 60 cm in width) hemp bag shape using a natural plant fiber string such as hemp is provided with mooring cords 2, 2,... The inside and outside of the outer bag 1 are slightly shorter and longer than the outer bag 1 by a cotton cloth or the like as shown in FIG.
m) A sandbag A is constructed by inserting the inner bag 3 sewn into a rectangular bag shape.

3 and 4, the inner bag 3 of the sandbag A is described.
A suitable amount B (about 100 g) of a powdery sodium salt of an acrylic acid polymer is accommodated therein, and the respective openings of the inner bag 3 and the outer bag 1 are closed to constitute a floodbag of the present invention.

[0012]

The sandbag for flood control of the present invention weighs about 400 g before it contains water and is in a flat state, so it is extremely easy to store and transport, and can be easily transported to a disaster site when a disaster occurs. It can be transported quickly, and unlike conventional sandbags, there is no need to stuff the bag with dirt or sand at the site, saving labor and time for setting sandbags, and disaster prevention measures in emergencies. Since the sandbag for flood protection of the present invention containing water weighs about 15 kg, the effect of damaging the overflow of the river by increasing water is comparable to that of the conventional sandbag.

After the sandbag is removed due to the danger of the disaster site, the condensed medicine is taken out of the sandbag and incinerated or dissolved in about 10% saline to make it liquid and treated. The bags are washed with water, then dried and reused. Sandbags that cannot be reused due to damage etc. are treated by incineration, etc., but excellent practical effects such as no fear of pollution due to generation of toxic gas or dioxin etc. Having.

[Brief description of the drawings]

[Fig. 1] Plan outline diagram of outer bag of sandbag

Fig. 2 Outline plan of inner bag of sandbag

FIG. 3 is a schematic plan view of the present invention.

4 is a sectional view taken along line XX of FIG.

[Explanation of symbols]

 A Sandbag 1 Outer bag 2 Mooring strap to prevent runoff 3 Inner bag B Chemicals (partial sodium salt of acrylic acid polymer)

Claims (2)

[Claims] 1. A rectangle (having a length of about 35 cm to 45 cm and a width of about 58 cm) of a predetermined size made of natural plant fiber strings such as hemp.
m to 60 cm) in an outer bag knitted into a hemp bag shape, an inner bag sewn with a cotton cloth or the like into a rectangular bag shape having dimensions slightly shorter in length and width than the outer bag to form a sandbag bag. A sandbag for flood control, wherein an appropriate amount (about 100 g) of a powdery acrylic acid polymer partial sodium salt is contained in the inner bag, and the respective openings of the inner bag and the outer bag are sealed. 2. The sandbag for flood control according to claim 1, wherein mooring straps for preventing runoff are provided at four corners of the outer bag.