JPS5931775Y2 - Water stop mat - Google Patents

Description

[Detailed description of the invention] The invention is used for the bottom walls of lakes, river banks, dams, etc., wastewater treatment ponds, waste treatment ponds, etc., and is intended to prevent water leakage.

In general, prevention of water leakage from lakes and rivers is required not only to secure agricultural water but also to secure water supply, and wastewater treatment ponds and waste treatment ponds are also required to prevent toxic substances from penetrating into the ground and causing pollution. It is absolutely necessary to do so.

However, conventional civil engineering work to prevent water leakage has been done by stretching a waterproof sheet made of rubber or other material over the surface of the object, or by laying concrete, but waterproof sheets made of rubber or other material do not have sufficient pressure resistance. Severe surface wear and easy damage.

Also, although concrete alone is thick, concrete tends to crack, water leaks through the cracks, and the water leakage effect cannot be fully exerted.

This invention eliminates the defects of conventional mats as mentioned above,
To provide a water-stopping mat that ensures a water leakage prevention effect, is extremely simple, inexpensive, and can be constructed quickly.

The present invention will be explained below through the drawings.

FIG. 1 is an explanatory cross-sectional view showing how the water-stopping mat of the present invention is used, and FIG. 2 is an explanatory enlarged cross-sectional view of the water-stopping mat.

The waterproof mat 1 according to the present invention is composed of two layers: a surface layer 2 made of a water-permeable textile fabric and a back layer 3 made of a waterproof fabric with high water pressure resistance. Then, the periphery 4 is joined or sewn to form a bag-like article.

This bag-like material is filled with a fluid cement mixture or earth and sand 6 having a high moisture content when injected into the bag to form a predetermined thickness as a whole.

The surface layer 2 constituting the bag is made of water-permeable knitted fabric, and its materials include cotton, linen, polyethylene, polyamide, polypropylene, vinyl chloride, vinylidene chloride,
Fibers with high tensile strength such as nylon, polyester, and polyacrylic are used.

The back layer 3 is made of the same textile fabric, synthetic rubber, and synthetic resin as the surface layer 2, and the textile fabric is made of synthetic rubber, synthetic resin,
This is a waterproof fabric with high water pressure resistance that is coated with vinyl chloride or laminated with polyethylene film.

In order to form a predetermined thickness as a whole when the bag is filled with a fluid substance, the surface layer 2 and the back layer are connected at appropriate points by connecting strips 5, such as strings, ropes, metal, resin hooks, etc. Connect via a ring.

In this case, it is preferable to connect the front layer 2 and the back layer 3 by weaving the upper and lower layers together into a double hem by incorporating a connecting strip 5.

The peripheral portions 4 of the front layer 2 and the back layer 3 are joined or sewn to form a bag-like product, and an injection port for a fluid substance is provided at an appropriate location.

On the other hand, the fluid material is preferably a highly fluid material with a high water content during injection, such as a cement mixture or earth and sand.

This is then filled into the formed bag-like material through the injection port.

In this case, since the surface layer of the bag is a knitted fabric,
It acts as a filter, and only water is discharged, resulting in a lower water content and solidification or less fluidity.

In this case, the back layer is made of waterproof fabric, so it will not seep into the ground.

Next, an example of implementing the present invention will be described.

For the surface layer 2, 840 denier nylon 66 is applied to the warp and weft yarns, and the implant density is 22 threads/2 for both the warp and weft.
．． 54 cm fabric, back layer 3 is nylon 66 8
A waterproof fabric was prepared by applying 40 yarns to the warp and weft yarns, and coating the woven fabric with a stitching density of 16 to 20 yarns/2.54 cm in both the warp and weft to a thickness of 1 mm with chloroprene rubber.

As shown in FIG. 2, the surface layer 2 and the back layer 3 are formed by double weaving, with appropriate locations connected by threads 5, and the peripheral 4
is sewn into a bag-like object.

As shown in FIG. 1, this sewn bag-like material is placed on the surface of the target wall 8 of the pond 7, and then the cement slurry 6 is injected and filled.

Water is then removed from the surface layer 2 of the woven fabric, and the cement slurry is solidified to form a water-stopping mat.

As explained above, the water stop mat of the present invention can be stably fixed and laid on the target bottom wall surface, and construction can be carried out extremely easily.

Moreover, the cost is low, the construction speed is fast, and the construction period can be shortened.

In addition, since the filler is covered with a knitted fabric, cracks are less likely to occur, and the material has excellent weather resistance, water resistance, and chemical resistance.

Furthermore, since it has high strength and moderate elongation, it can fully adapt to any unexpected ground movement, so there is no need to worry about cracking.

[Brief explanation of the drawing]

FIG. 1 is an explanatory cross-sectional view showing an example of the implementation of the water-stop mat according to the present invention, and FIG. 2 is an explanatory cross-sectional view of the water-stop mat. 1 is a waterproof mat, 2 is a surface layer, 3 is a back layer, 4 is a sewn portion, 5 is a connecting strip, 6 is a fluid material, 7 is a pond, and 8 is a wall surface.

Claims (1)

[Scope of utility model registration request] A bag is formed with two layers, a surface layer made of a water-permeable knitted fabric and a back layer made of a highly water-resistant waterproof fabric, connected at appropriate locations, and a cement mixture or earth and sand is poured into the bag. A waterproof mat characterized by being filled to a predetermined thickness as a whole.