JP2003034918A - Cut-off sheet, method for detecting broken part thereof, and repairing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems such that when a cut-off sheet is below the surface of the water (the surface of the sea), a ship is prepared and water borne work is executed, and moreover, repairing work accompanies diving work, as a result, hard work, time, and a considerable amount of money are required. SOLUTION: The cut-off sheet, the method for detecting broken parts thereof, and the repairing method are characterized in that a plurality of pipes, to which plural through-holes are provided around, are arranged at a prescribed interval inside the bag-shaped cut-off sheet of which the surrounding of a sheet material is sealed, the broken parts are detected by confirming bubbles discharged from the cut-off sheet by injecting air into the cut-off sheet via the pipes, and also, by stopping suction and confirming the presence or the absence of the rise of the pressure after internal pressure is set to prescribed pressure by decompressing inside the cut-off sheet by suction via the pipes, and moreover, the broken parts are repaired by pressing in a repairing material inside a block having the broken parts via the pipes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water shield sheet used for a water shield structure in a golf course such as a water hazard, a pool, a reservoir, a reservoir, a waste disposal site, and the ocean, and a method of detecting and repairing a damaged portion thereof.

[0002]

2. Description of the Related Art For example, in a waste disposal site in which the ocean is landfilled, the bottom of the disposal site is covered with a water-blocking sheet so that sewage does not leak from the disposal site. When such a laid water shield sheet is damaged, there is a method of detecting the damaged part by an electric signal, and there is a method of digging up the detected part and repairing the part with an adhesive or the like. .

[0003]

According to such a conventional technique, when the water-blocking sheet is below the water surface (sea surface), a ship is prepared for water work, and the repair work involves diving work. However, there is a problem in that it is a difficult task, takes a lot of time and costs a lot.

[0004]

Therefore, according to the present invention, a plurality of pipes provided with a plurality of through holes in the periphery thereof are arranged at predetermined intervals in a bag-shaped water-impervious sheet constituted by sealing a sheet material, Divide these pipes into multiple blocks, connect each pipe for each block to the injection / exhaust pipes to communicate with the outside, and form a partition by sealing the water-blocking sheet for each block. It is characterized by making it independent.

Further, a plurality of pipes having a plurality of through holes in the periphery thereof are arranged at predetermined intervals in a bag-shaped water-impervious sheet formed by sealing a sheet material, and the water-impermeable sheet is provided through the pipes. It is characterized by injecting air into and confirming the bubbles released from the impermeable sheet and detecting the damaged part. Further, after the inside of the water-blocking sheet is suction-decompressed through the pipe to set the internal pressure to a predetermined pressure, the suction is stopped and the presence or absence of an increase in pressure is confirmed to detect a damaged portion.

Further, a plurality of pipes having a plurality of through holes in the periphery thereof are arranged at a predetermined interval in a bag-shaped waterproof sheet formed by sealing a sheet material, and the pipes are divided into a plurality of blocks. It is characterized in that the damaged part is repaired by press-fitting a repair agent into the block having the damaged part through the pipe.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. First Embodiment Example FIG. 1 is a plan explanatory view, FIG. 2 is a sectional enlarged partial explanatory view,
In the figure, reference numeral 1 is a waterproof sheet, and two sheet materials 2 such as a rubber material, a vinyl chloride material, a thermoplastic elastomer material, and an asphalt material are laminated in a double layer, and if necessary, a figure As shown in FIG. 3, the space between the two sheets is sealed by interposing a spacer 3 in a flexible arbitrary state such as a mesh structure made of synthetic resin such as polyethylene, rubber, metal or any other material.

Further, one end portion made of a synthetic resin such as vinyl chloride material or a flexible material such as rubber is closed between the two sheet materials 2 as shown in FIG. Plural pipes 5 provided with the holes 4 are arranged at predetermined intervals, and the pipes 5 are divided into plural blocks 61, 62, 63 ... 6
It is divided into n and each pipe 5 for each block is connected to an injection / exhaust pipe 7 and arranged so as to communicate with the outside. The bag-shaped water impermeable sheet 1 is constructed by projecting the open end 8 from the side portion in the sealed state.

Further, the water-blocking sheet 1 is preferably provided with a partition 9 by independently sealing each of the blocks 61, 62, 63 ... 6n. It should be noted that if each of the injection / exhaust pipes 7 is arranged so that the open end portion 8 is located on one side of the water shield sheet 1, the workability of injection and exhaust after that is good. Further, each of the above-mentioned sheet materials may be used as it is in the size of one sheet that can be produced in a factory, or may be a sheet material that is spliced into one sheet.

Reference numeral 10 is a protective layer provided as necessary,
The surface in contact with the laying surface is made of various fibers such as natural fibers, synthetic fibers, metal fibers or a combination thereof, or woven or non-woven fabric. It should be noted that a plurality of water impervious sheets 1 configured in this way are connected and used in a desired size.

As shown in FIG. 5, for example, the water-blocking sheet 1 having the above-described structure is extended on the water surface (including the sea surface) of a laying site with the protective layer 10 down, and each of the injection / exhaust pipes is extended. 7 to each block 61, 62, 63 ... 6n
The pipe 5 is expanded by introducing air into the water-blocking sheet 1. Therefore, the air from inside the sheet material is evacuated from each of the injection / exhaust pipes 7 at the same time or in order by the pipe 5, or conversely, at the same time to each block by the pipe 5 via each of the injection / exhaust pipes 7. Injecting water (seawater) in order and injecting water between the water-blocking sheets 1 to reduce the buoyancy of the water-blocking sheets 1 and submerge them in the sea Fig. 5
It can be laid on the seabed as shown in.

In this way, when water is injected when laying on the seabed, if the water is sucked and discharged after laying, it is suitable for damage detection and repair described later. In the above structure, when the spacer 3 is interposed in the water-impervious sheet 1, the water-impervious sheet 1 is extended without the first step of injecting air into the water-impervious sheet 1 in the above step. As a result, the spacer 3 forms a space in the water impervious sheet 1 and the water impervious sheet 1 can be expanded.

In the above process, when air is injected, in order to ensure the expansion of the water-blocking sheet 1,
It is preferable to carry out sequentially from the block in front. For suction and seawater injection, in the case of a laying site as shown in Fig. 5,
In order to lay the water-blocking sheet 1 uniformly at a predetermined place without wrinkling, it is preferable to sequentially perform the steps from the front block.

Therefore, after laying, as shown in FIG. 5, the damaged portion is detected by sending air into the water-impervious sheet 1 through each of the injection / exhaust pipes 7 and 5 so that the water-impervious sheet can be detected. The detection can be performed by confirming whether or not the bubbles emitted from the surface of No. 1 are generated. As another detection method, especially effective when not in water,
As shown in FIG. 6, after the suction / decompression of the inside of the water-blocking sheet 1 through each of the injection / exhaust pipes 7 and 5 to bring the internal pressure to a predetermined pressure, the suction is stopped to confirm that the pressure does not rise. It is possible to detect that there is no damaged part.

When breakage is detected by these methods and the water-blocking sheet 1 is divided into blocks, as shown in FIG. For example, a repairing agent 15 that solidifies or swells when water such as bentonite or a water-swelling polymer is absorbed is press-fitted into the inside through 5, for repairing. Any repair agent can be used depending on the place of use.

Even if it is not divided into blocks, it can be repaired by press-fitting a repairing agent from the injection / exhaust pipe 7 and the pipe 5 which are in communication with the damaged part. Second Embodiment Example This embodiment example has a double structure, and as shown in FIG. 8, a sheet material 11 such as a rubber material, a vinyl chloride material, a thermoplastic elastomer-based material, or an asphalt-based material is used. The bag-shaped reinforcing sheet 12 is formed by stacking two sheets and sealing the periphery.

Inside the reinforcing sheet 12, a bag-shaped inner sheet 14 in which two sheet materials 13 such as a rubber material, a vinyl chloride material, a thermoplastic elastomer-based material, and an asphalt-based material are stacked and the periphery is sealed is provided, If necessary, the inner sheet 14 may be made of a synthetic resin such as polyethylene as shown in FIG. 3, a rubber, a metal, or any other flexible material such as a mesh structure as shown in FIG. The spacer 3 in the state is sealed.

In the thus formed inner sheet 14, one end portion made of a synthetic resin such as vinyl chloride material or a flexible material such as rubber as shown in FIG. 4 is closed, and a plurality of through holes 4 are formed in the periphery. A plurality of the provided pipes 5 are arranged at a predetermined interval, and the pipes 5 are provided with a plurality of blocks 6 as in the first embodiment.
, 6n, and each pipe 5 for each block is connected to an injection / exhaust pipe 7 so as to communicate with the outside. The opening end 8 of the inner sheet 14 is projected from one side of the sealed state, and the opening end 8 of the reinforcing sheet 12 is further extended from the one side of the sealed state.
To project the water-permeable sheet 1. Each of the injection / exhaust pipes 7 also has an opening end 8 on one side of the water-blocking sheet 1.
If they are arranged so that they come in close to each other, the workability of injection and exhaust afterwards is good.

Reference numeral 10 is a protective layer provided as necessary,
The surface that comes into contact with the laid surface of the water-impervious sheet 1 is made of a woven or non-woven fabric made of various fibers such as natural fibers, synthetic fibers, metal fibers, or a combination thereof. The water-permeable sheet 1 having the above-described configuration is, like the above-described embodiment, extended by extending the protective layer 10 downward on the water surface (a concept including the sea surface) of the laid site, and injecting and exhausting the pipes 7. From each block 6
The air is introduced into the inner sheet 14 by the pipes 1, 62, 63, ...

Therefore, the air inside the sheet material is evacuated from the respective injection / exhaust pipes 7 by the pipe 5 at the same time or sequentially, or conversely, each block is removed by the pipe 5 via the respective injection / exhaust pipes 7. Seawater at the same time or in order to inject seawater between the inner sheets 14 to reduce the buoyancy of the water-impervious sheet 1 and sink it into the sea, as shown in FIG. Can be laid in.

In the above structure, when the spacer 3 is interposed in the inner sheet 14, the water impervious sheet 1 can be obtained without the first step of injecting air into the inner sheet 14 in the above step. By extending, the spacer 3 forms a space in the inner sheet 14 and the water-blocking sheet 1 can be expanded. Therefore, after laying, as shown in FIG. 5, it is necessary to detect the damaged portion because the air is sent into the inner sheet 14 through each of the injection / exhaust pipes 7 and 5 as shown in FIG. Detection can be performed by checking the presence or absence.

Another detection method is particularly effective when not in water, and as shown in FIG. 6, the inner pressure of the inner sheet 14 is suctioned and depressurized through each of the injection / exhaust pipes 7 and 5 to set a predetermined internal pressure. After the pressure is set to 1, the suction can be stopped and it can be confirmed that there is no increase in pressure to detect that there is no damaged portion. If damage is detected by these methods, and if the inner sheet 14 is divided into blocks, as shown in FIG. 7, the injection / exhaust pipe 7 and the pipe 5 are placed in the block having the damage. For example, a repair agent 15 that solidifies or swells when water such as bentonite or a water-swellable polymer is absorbed is press-fitted into the interior for repairing. Any repair agent can be used depending on the place of use.

Even if it is not divided into blocks, it can be repaired by press-fitting the repairing agent from the injection / exhaust pipe 7 and the pipe 5 which communicate with the damaged part. In addition, although the injection / exhaust pipe 7 and the pipe 5 are arranged in the inner sheet 14 in the above description, they may be arranged in the reinforcing sheet 12 and can be operated in the same manner as in the above description.

[0024]

According to the present invention described in detail above, a plurality of pipes having a plurality of through holes in the periphery thereof are arranged at predetermined intervals in a bag-shaped water-impervious sheet in which the periphery of the sheet material is sealed.
By dividing these pipes into multiple blocks and connecting each pipe of each block to an injection / exhaust pipe to communicate with the outside, the air in the water-impervious sheet can be removed by these pipes. By injecting air, there is an effect that the damaged portion can be detected extremely easily and accurately.

Further, by injecting a repairing agent into these pipes, the damaged portion can be repaired without performing diving work or excavation work, and the effect of facilitating repair work of the water-blocking sheet can be achieved. Have.

[Brief description of drawings]

FIG. 1 is an explanatory plan view showing an example of a first embodiment.

FIG. 2 is an enlarged cross-sectional explanatory view

FIG. 3 is an explanatory diagram of a spacer

FIG. 4 is an explanatory diagram of a pipe

FIG. 5 is an explanatory diagram of a damaged portion detection method.

FIG. 6 is an explanatory diagram of another damage location detection method.

FIG. 7 is an explanatory diagram of a repair method.

FIG. 8 is an enlarged partial cross-sectional explanatory view showing a second embodiment example.

[Explanation of symbols]

1 Impermeable sheet 2 sheet materials 3 spacers 4 through holes 5 pipes 61, 62, 63 ... 6n blocks 7 Injection and exhaust pipes 8 Open end 9 partitions 10 Protective layer 11 sheet materials 12 Reinforcement sheet 13 sheet materials 14 inner sheet 15 Repair agent

Claims (6)

[Claims] 1. A plurality of pipes having a plurality of through holes in the periphery thereof are arranged at predetermined intervals in a bag-shaped waterproof sheet formed by sealing a sheet material, and the pipes are divided into a plurality of blocks. However, each pipe of each block is connected to an injection / exhaust pipe so as to communicate with the outside, and a water barrier sheet is sealed for each block to form a partition to make it independent. Impermeable sheet to be used. 2. The waterproof sheet according to claim 1, wherein a flexible spacer is inserted in the waterproof sheet. 3. The waterproof sheet according to claim 1, wherein the waterproof sheet has a double structure in which a bag-shaped inner sheet is housed in a bag-shaped reinforcing sheet. 4. A bag-shaped water impermeable sheet formed by sealing a sheet material, and a plurality of pipes having a plurality of through holes in the periphery thereof are arranged at predetermined intervals, and the water impermeable sheet is provided through the pipes. A method to detect broken points by injecting air into the water and confirming the bubbles released from the impermeable sheet. 5. A bag-shaped water impermeable sheet formed by sealing a sheet material, wherein a plurality of pipes having a plurality of through holes in the periphery are arranged at predetermined intervals, and the water impermeable sheet is provided through the pipes. After depressurizing by suction to bring the internal pressure to a predetermined pressure, stop suction and check if there is a rise in pressure to detect the damaged part. 6. A bag-shaped water impermeable sheet formed by sealing a sheet material, wherein a plurality of pipes having a plurality of through holes are arranged at predetermined intervals, and the pipes are divided into a plurality of blocks. Then, the damaged part is repaired by press-fitting a repair agent into the block with the damaged part through the pipe.