JPH07229127A - Impervious sheet and method for laying impervious sheet - Google Patents

Abstract

PURPOSE:To improve efficiency by engaging a second rope, by which plural floats are linked together, with a first rope passed through a row of locking members, and recovering the floats by the second rope which is disengaged from the first rope. CONSTITUTION:Buoyancy is applied to an impervious sheet main body 2 by floats 6, and an impervious sheet 1 is let out on the water surface and floated. Subsequently, the engagement of a first rope 4 with a second rope 5 is released to remove buoyancy produced by the floats 6, and the sheet 2 is settled and laid on the bottom of water. At this time, the plural floats 6 are floated on the water surface while being linked together by the rope 5. The rope 5 is pulled up to recover the floats 6 flating on the water surface at one time, and each one end of the ropes 4, 5 is engaged to recover the rope 4 with the floats 6. Further, at need, the ropes 4, 5 are locked at suitable intervals by a third rope, so that the sheet 2 is floated on the water surface surely extending over the whole area. Thus, a laying work can be executed very easily in a short time, and reused.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-blocking sheet and a method for laying it on a reclaimed land provided in a harbor, a coast, a river, a lake or the like, or on an inner surface of a revetment and a water bottom in an industrial waste treatment plant. It is about.

[0002]

2. Description of the Related Art Conventionally, a part of the sea area and water area is surrounded by a seawall,
The earth and sand are buried inside it, or used as a place to put industrial waste, etc., but harmful components contained in the earth and sand that are put into the water dissolve in water and permeate through revetments and bottoms. Moreover, there is a concern that it may flow out into the surrounding sea area and water area, causing environmental pollution, which is not preferable.

Therefore, in order to prevent outflow of harmful components to the surroundings, it is practiced to lay a water-blocking sheet on the inner surface of the revetment and the bottom of the water.

However, landfill sites are generally vast, and it is extremely difficult to lay a water-blocking sheet on the inner surface of the revetment and the bottom of the water especially in a reservoir.

Therefore, for example, a plurality of water-blocking sheet pieces to which a plurality of floats are interlocked and imparted with buoyancy are floated at predetermined positions on the water surface in a landfill, and are joined to each other at their side edges to widen. Japanese Patent Publication No. 1-40170 discloses a method of forming a water-impermeable sheet, removing the buoyancy by removing the float, and allowing the water-impermeable sheet to settle and lay it on the water bottom and the inner surface of the seawall. .

In this conventionally known method of laying a water-impervious sheet, a rope is inserted and locked on locking members arranged on the surface of the water-impermeable sheet at appropriate intervals on the surface of the water-impermeable sheet body, and then inserted. In the process, a plurality of floats having an annular engaging portion are inserted and engaged with the rope to give buoyancy to the water-impervious sheet body and to be floated on the water surface and floated, and then the rope is pulled out from the locking member. A plurality of floats are removed to settle the impermeable sheet and lay it on the bottom of the water.

In this conventional example, the impermeable sheet can be laid quickly and easily. However, when the impermeable sheet is settled, a plurality of floats inserted and fastened to the rope are disassembled on the water surface. To float.

Therefore, a plurality of floats that are diffused and floated on the water surface must be collected by using, for example, a ship, which requires a great deal of time and labor.

[0009]

The problem to be solved by the present invention is that, according to the conventionally known method of laying a water-blocking sheet using a float, the water-blocking sheet diffuses and floats on the water surface when the water-blocking sheet sinks. That is, it takes a lot of time and labor to collect the plurality of floating floats.

[0010]

The present invention has been made in order to easily collect a plurality of floats floating on the water surface when the water-blocking sheet is settled, which is the above-mentioned problem. The sheet includes a water-impervious sheet body in which locking members are arranged in rows on the surface at an appropriate interval, and a first rope which is sequentially inserted and locked in the locking member and arranged along the surface of the water-impermeable sheet body. A second rope in which a plurality of floats are connected to each other with an appropriate interval, and a third rope for connecting the first rope and the second rope to each other is added to the above structure. It has a different configuration.

Further, in the method of laying a water-blocking sheet according to the present invention, at least one end of a second rope in which a plurality of floats are sequentially connected is arranged on the surface of the water-blocking sheet at appropriate intervals. Directly to the first rope that is inserted and locked in, or by using a third rope to give a buoyancy to the water-impervious sheet body and after being drawn out and floated on the water surface, the first rope and the second rope When the connection is released, the second rope and the plurality of floats connected to the second rope are detached, and the water-impervious sheet is settled and laid on the bottom of the water.

[0012]

[Operation] A plurality of floats are collected at a time by pulling up the second rope that has been disconnected from the first rope.

[0013]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention in which a water-blocking sheet 1 has water impermeability and flexibility.
For example, the thickness is 1 to 10 mm, the width is 2 to 10 mm, and the length is 5.
A plurality of locking members 3 of approximately Ω shape are provided at appropriate intervals on the surface of a long water-impervious sheet body 2 made of a vinyl chloride resin sheet or the like having a reinforcing layer made of a braid or the like, if necessary. It is lined up in the direction.

A first rope 4 is sequentially inserted into each of the locking members 3 and arranged along the surface of the water-blocking sheet body 2.

A second rope 5 is arranged side by side above the first rope 4, and both ends of the second rope 5 are connected to both ends of the first rope 4 respectively. A plurality of floats 6 are fixedly attached to each other at appropriate intervals.

The float 6 has a conventionally known structure such as a hollow sphere made of a hard synthetic resin or a solid one made of a foamed synthetic resin such as Styrofoam resin. Any thing can be used.

The water-blocking sheet 1 having the above-mentioned structure is a float 6.
After giving a buoyancy to the water-impervious sheet main body by drawing it out and floating it on the water surface, and if necessary, after joining a large number of water-impervious sheets 1 at their side edges to cover most of the water surface (not shown) , The first rope 4 and the second rope 5 are disengaged to remove the buoyancy of the float 5, and the water-blocking sheet body 2 is settled and laid on the bottom of the water.

At this time, the plurality of floats 6 are attached to the second rope 5
Floats on the water in the state of being connected by

Therefore, by pulling up the second rope 5, a plurality of floats 6 floating on the water surface can be collected at once.

In this embodiment, when the first rope 4 and the second rope 5 are disengaged from each other, only one end of the first rope 4 and the second rope 5 is disengaged from each other. By collecting the second rope 5 by connecting the first rope 4 and the second rope 5 at one end, it is possible to collect not only the float 6 but also the first rope 4 at the same time.

In the above embodiment, the first rope 4 and the second rope 5 are separate members and are connected to each other. However, the first rope 4 and the second rope 5 are continuously and integrally formed. In this case, the same action / effect can be achieved,
In particular, since the number of connecting points between the first rope 4 and the second rope 5 is reduced, the laying work is reduced.

Further, in this embodiment, the first rope 4 is detachably attached to the waterproof sheet body 2 by sequentially inserting the first rope 4 into the locking member 3 arranged in the waterproof sheet body 2. Although the first rope 4 is detachably attached to the water-impervious sheet main body 2 and the connection with the second rope 5 is completely released during laying, the first rope 4 may be settled as it is. Of course, in this case, it is possible to use the water-blocking sheet main body 2 to which the first rope 4 is attached in advance, and the labor of the laying work can be reduced.

FIG. 2 shows a different embodiment of the present invention. The main structure, operation and effect are almost the same as those of the embodiment shown in FIG. 1, but a plurality of floats 6 are sequentially connected. The second rope 5 and the first rope 4 that is locked to the locking member 3 that is arranged on the surface of the water-impervious sheet body 2 at appropriate intervals are alternately locked at appropriate intervals between them. They are connected to each other by a third rope.

Therefore, unlike the case where the first rope 4 is connected to both ends of the second rope 5 as shown in the embodiment shown in FIG. 1, the water-impervious sheet body is formed in the middle portion of the second rope 5. It is possible to reliably float the water-blocking sheet main body 2 on the water surface over the entire area without being separated from the water-blocking sheet main body 2.

[0026]

According to the present invention having the above-described structure, it is necessary to collect a plurality of floats floating on the water surface when they settle down by a small boat or the like, like a conventional water-blocking sheet using a float. In addition, it is possible to collect a plurality of floats at once by simply pulling up the second rope, so not only can laying work be performed very easily and in a short time, but it is also easy to reuse. is there.

In addition, the first rope is detachably arranged on the water-impervious sheet body 2, and when the first rope and the second rope are connected, it is possible to collect the first rope together with the second rope. It is extremely convenient.

[Brief description of drawings]

FIG. 1 is a perspective partial view schematically showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a float used in the embodiment shown in FIG.

3 is a perspective view showing a float having a different structure used in the embodiment shown in FIG. 1. FIG.

FIG. 4 is an explanatory diagram showing a usage state in the embodiment shown in FIG.

[Explanation of symbols]

 1 Water-impermeable sheet 2 Water-impermeable sheet body 3 Locking member 4 First rope 5 Second rope 6 Float 7 Third rope

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[Procedure amendment]

[Submission date] June 23, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a perspective partial view schematically showing an embodiment of the present invention.

FIG. 2 is a perspective view showing the outline of a different embodiment of the present invention.

[Explanation of Codes] 1 Water-blocking sheet 2 Water-blocking sheet body 3 Locking member 4 First rope 5 Second rope 6 Float 7 Third rope

Claims (4)

[Claims] 1. A water-impervious sheet body having locking members arranged on the surface at appropriate intervals, and a first rope locked by the locking member and arranged along the surface of the water-impermeable sheet body. And a second rope in which a plurality of floats are connected to each other at appropriate intervals. 2. A water-impervious sheet body having locking members arranged on the surface at appropriate intervals, and a first rope locked by the locking member and arranged along the surface of the water-impermeable sheet body. A shield comprising a second rope in which a plurality of floats are connected to each other with an appropriate interval, and a third rope for connecting the first rope and the second rope to each other. Water sheet. 3. At least one end of a second rope in which a plurality of floats are sequentially connected to each other is connected to a first rope that is locked by locking members that are lined up at appropriate intervals on the surface of the waterproof sheet. A plurality of floats connected to the second rope and the second rope by releasing the connection between the first rope and the second rope after giving a buoyancy to the water-blocking sheet body to let it float on the water surface and floating. A method of laying a water-impervious sheet, characterized in that the water-impervious sheet is settled and the water-impervious sheet is settled and laid on the water bottom. 4. A third rope connecting a second rope in which a plurality of floats are sequentially connected and a first rope locked by locking members arranged in rows at appropriate intervals on the surface of the water-blocking sheet. After imparting buoyancy to the water-impervious sheet body by feeding it and floating it on the water surface, it is released to the second rope and the second rope by releasing the connection between the first rope and the second rope by the third rope. A method of laying a water-blocking sheet, characterized in that a plurality of floats connected to each other are detached to settle the water-blocking sheet and lay it on a water bottom or the like.