JP2700680B2 - Impermeable structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a final disposal site for waste, a reservoir, a storage facility for a solution containing a pollutant, or a water shielding structure such as various buildings.

<Conventional technology> In a facility that stores solutions containing contaminants such as heavy metals, or a managed final disposal site that reclaims waste such as sludge, mining tails, cinders, and kitchen garbage, if a water leakage accident occurs, soil, The adverse effects on the surrounding environment such as groundwater and river pollution are enormous.

 Therefore, its water shielding is important.

This type of facility has conventionally been solved by providing a water-blocking layer with a sheet or asphalt having water-blocking properties.

<Problems to be Solved by the Present Invention> However, the following problems exist in the above-described conventional water shielding technology.

<A> In the conventional technology, when water leakage occurs due to breakage of the water barrier layer, it is very difficult to find the water leakage.

<B> Even if a leak is discovered due to changes in the surrounding environment such as groundwater pollution, the surrounding environment is often already spread over a wide area.

<C> In addition, even if a water leak is discovered, waste is deposited on the upper part of the impermeable layer,
It is very difficult to repair.

<Object of the present invention> The present invention has been made to solve the above problems, and when the impermeable layer is damaged, the impermeable layer can be easily and quickly repaired, and the surrounding environment can be repaired. It is an object of the present invention to provide a water-blocking structure capable of preventing pollution.

<Configuration of the Present Invention> Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In this embodiment, a waste disposal site will be described as an example.

<A> Water-blocking layer The water-blocking layer is formed of a sheet or the like having a water-blocking property.

For this sheet, a material having a water-blocking property such as rubber or vinyl is used.

Then, these sheets are double laid at predetermined disposal sites at intervals as shown in FIG. 1 to form an upper sheet 1 and a lower sheet 11.

<B> Repair Layer The repair layer 2 is formed of a material that expands and solidifies when it comes into contact with water and generates water barrier properties.

For example, a urethane resin, a mixture of urethane resins, and the like can be used.

The repair layer 2 is arranged between the upper sheet 1 and the lower sheet 11.

<Operation of the Present Invention> Next, the operation of the present invention will be described with reference to FIG.

Waste 3 has been put into the disposal site, and FIG.
A part of the waste 3 penetrates the upper and lower sheets 1 and 11,
This shows a state where the upper and lower layer sheets 1 and 11 are damaged.

Due to the waste 3, the upper and lower layer sheets 1 and 11 are perforated, and water in the disposal site enters the repair layer 2.

Then, the repair layer 2 instantaneously reacts with water and expands, and flows out of the damaged portions of the upper and lower layer sheets 1 and 11 to the outside to be solidified.

The solidified repair layer 2 forms the plug 21, and the damaged portions of the upper and lower sheets 1 and 11 are completely closed.

Therefore, it is possible to prevent sewage and the like in the disposal site from flowing out to the surrounding soil and the like.

<Other Examples> In the above example, the repair layer 2 is located between the upper and lower sheets 1 and 11, but as another example, the repair layer 2 is opposite to the waste 3 of a single impermeable sheet. It is also possible to position the repair layer 2 on the side surface, or to stack the waterproof sheet and the repair layer 2 in a plurality of layers.

The point is that the repair layer 2 does not normally come into contact with water, but only comes into contact with water and expands to close the impermeable sheet only when the impermeable sheet is damaged.

<Effects of the Present Invention> Since the present invention has been described above, the following effects can be expected.

In other words, in the prior art, when water leakage due to breakage of the impermeable layer occurs, it is very difficult to find the leak. Even if the leak is found, waste accumulates above the impermeable layer. Therefore, it is very difficult to find and repair damaged portions of the impermeable layer.

On the other hand, according to the present invention, when the impermeable layer is damaged, the repair layer reacts with water and expands instantaneously, and flows out of the damaged portion of the impermeable layer to solidify.

The solidified repair layer forms a plug, and the damaged portion of the impermeable layer is completely closed.

Therefore, the impermeable layer can be repaired quickly and easily.

Therefore, it is possible to prevent sewage from flowing out of the final disposal site of waste, etc., and to protect the surrounding environment.

In addition, by using it for a reservoir, a dam or the like, water leakage can be prevented, and waste of water resources can be minimized.

[Brief description of the drawings]

 FIG. 1: Explanatory drawing of one embodiment of the present invention FIG. 2: Explanatory drawing showing operation

Claims (1)

(57) [Claims] 1. A water-blocking structure, comprising a water-blocking layer having a water-blocking property and a repair layer made of a material that expands when it comes into contact with water to form a water-blocking property.