JPH0645456Y2 - Water blocking mat - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention is an impervious water used to prevent leakage of sewage in construction and civil engineering sites, wastewater treatment water purification ponds, waste treatment ponds, and rivers. Regarding the improvement of the mat.

[Conventional technology]

Wastewater and wastewater generated at construction and civil engineering sites are usually stored in a temporary pond to precipitate mud and purified to return to rivers for reuse of water resources. In addition, a large amount of household and industrial waste is made by digging a large-scale hole in a predetermined treatment site and burying it in the hole for disposal.

Conventionally, in such a case, the water purification pond, the bottom of the hole for dumping and the slope portion are laid by laying a large number of water-permeable mats each having a predetermined length and made of a PVC sheet or a rubber sheet having a thickness of 1 mm to 2 mm, in sequence. The overlapping part was treated with an adhesive or heat-welding to ensure complete water impermeability. Due to this impermeable treatment, effective water purification and rivers of substances harmful to the human body flowing out of waste,
It was blocking the leak to the sea.

Further, by laying the above-mentioned water-blocking mat on the riverbed or the embankment wall, breakage of the embankment due to water leakage, especially when the water level increases, was prevented.

[Problems to be solved by the device]

However, since conventional water-blocking mats use soft materials such as PVC sheets and rubber sheets, they are often easily damaged or punctured by organisms such as rats, moles, or weasels in the soil. Also, due to the growth of bamboo, trees, etc., or due to wood chips or rocks, or even when the waste is dumped, the water-blocking mat is breached or cuts, and the complete water-blocking effect cannot be achieved. Met.

In addition, the weather resistance of the vinyl chloride sheet is about 20 years, the weather resistance of the rubber sheet is about 10 years, etc., compared to the period when water blocking is required (for example, semi-permanent in the case of embankments), In reality, there is a problem with the service life.

The present invention has been made in view of the above, and an object thereof is to provide a water blocking mat which is excellent in practicality and workability in addition to long-term weather resistance.

[Means for Solving the Problems]

The water-blocking mat according to the present invention comprises a non-woven mat made of synthetic fibers bonded to the upper surface of a stainless thin plate having a predetermined size by a corrosion-resistant adhesive.

Further, it is desirable to form an uneven shape on the surface of the stainless thin plate.

Furthermore, the synthetic fiber non-woven mat may be bonded to both upper and lower surfaces of the stainless thin plate.

[Action]

According to this invention, the weather resistance period is extremely long due to the stainless thin plate. In addition, the non-woven mat adhered to the upper surface acts as a buffer against the impact when the waste is dumped, cracks and the like are less likely to occur in the stainless steel thin plate, and due to its difficulty in sliding, the laying work can be performed easily and quickly. .

According to the second aspect, since the unevenness of the stainless steel thin plate is caught on the soil below, it is difficult to shift the laying position.

According to claim 3, the stainless steel thin plate has a cushioning function against impacts from both upper and lower surfaces.

〔Example〕

FIG. 1 is a structural view showing an example of a water-permeable mat according to the present invention, FIG. 1 (A) is a perspective view, and FIG. 1 (B) is a sectional view.

In the figure, reference numeral 1 is a mat-like non-woven fabric made of a synthetic fiber having excellent corrosion resistance, which corresponds to the construction site conditions, that is, the slope of the slope, the degree of rough surface such as debris and protrusions, and the type of waste. It is possible to properly use those having different thicknesses. Usually, a size of about 1 mm to 5 mm is suitable.

Reference numeral 2 is a stainless thin plate having a width of 2 m and a length of 10 m, for example, which is excellent in corrosion resistance, and like the above, those having different thicknesses can be appropriately used depending on the situation of the construction site. In addition, its thickness is 0,1 m considering economic efficiency and workability.
It is preferably about m to 0.2 mm.

Reference numeral 3 is a corrosion-resistant adhesive for bonding the nonwoven fabric 1 and the stainless steel thin plate 2 together. The adhesive 3 is preferably corrosion-resistant in order to prevent deterioration of the adhesive effect due to water, waste chemicals, etc. from the upper nonwoven fabric 1.

The non-woven fabric 1 is adhered to the above side of the stainless steel thin plate 2, and due to its elasticity, serves as a buffer function for waste and rocks dumped from above and protects the stainless steel thin plate 2. Further, since the surface has a high friction, it has a non-slip effect during laying work, and the work efficiency and safety are secured. In particular, it is useful when laying on a slope as described above.

The strength per unit area of the stainless steel thin plate 2 is about 40 times stronger than that of a vinyl chloride sheet or a rubber sheet, and it cannot be punctured by organisms in the soil. If the buffer protection by the non-woven fabric 1 is taken into consideration, it will last for 100 years or more, so-called semi-permanently.

FIG. 2 is a structural view showing a second embodiment of the present invention. FIG. 2A is a perspective view and FIG. 2B is a sectional view. In the figure, the same reference numerals as those in FIG. 1 indicate the same items.

In this embodiment, the surface of the stainless thin plate 2 is provided with irregularities, that is, projections 4. The projection 4 may have a semi-circular shape as well as a rectangular cross section as shown in the drawing, and is formed in a rail shape in a direction orthogonal to the winding direction at the time of winding in a roll shape. A large number of the rail-shaped projections 4 are formed at a predetermined interval. After the laying, the soil enters the recesses 4'between the projections 4 and is firmly bonded to the ground surface for stable fixing for a long period of time. As a result, the slip is effective especially when laid on a slope. It can be prevented.

Also, considering the convenience of storage and transportation after manufacturing, as well as laying work, the water-impervious mat is rolled and handled.
In this case, if the projection 4 is formed in the direction orthogonal to the winding direction as described above, the winding can be performed without any trouble.

The protrusions 4 may be slightly displaced from the direction orthogonal to the winding direction, for example, may be formed in a rhombic shape, and are formed in a scattered shape having a diameter and a distribution that do not affect the winding. It may be a protrusion.

FIG. 3 is a structural view showing a third embodiment of the present invention, wherein FIG. 3A is a perspective view and FIG. 3B is a sectional view. In the figure, the same reference numerals as those in FIG. 1 indicate the same items.

In the figure, 5 is the same non-woven fabric as the non-woven fabric 1 and is bonded to the lower surface of the stainless steel thin plate 2 with an adhesive 3.

In this way, the nonwoven fabric 1 is formed on both upper and lower surfaces of the stainless steel thin plate 2,
By providing 5, the stainless steel thin plate 2 has a cushioning function against impacts from both upper and lower surfaces, and the stainless steel thin plate 2 can be further protected. The water-permeable mat according to this example is particularly effective when the ground surface is rough.

4 and 5 show an example of use of the water blocking mat 10 according to the present invention, and FIG. 4 shows a state in which it is laid in a disposal hole (or a water purification pond) dug in a disposal site or the like. Fig. 5 shows the state of being laid on the embankment of the river.

In FIG. 4, the water-impervious mat 10 is first laid so that the bottoms of the holes are sequentially overlapped with each other, and then the water-permeable mat is sequentially laid on the slope portion. Each of the water-blocking mats 10 is connected to the stainless steel thin plates 2 at the above-mentioned partially overlapping portions by a corrosion-resistant adhesive or by welding, thereby water-blocking the entire hole. Also, of the water-blocking mats 10 laid on the slopes, the uppermost water-blocking mat 10 is prevented from slipping by digging it into the skin as a law piece at the appropriate place at its upper end or fixing it with anchors. ing. Then, after covering an appropriate amount of earth and sand on this, sewage or the like is introduced or waste or the like is discarded.

In FIG. 5, on the slope of the embankment 20 on the river 30 side, the water-blocking mat 10 is laid in order in the depth direction of the drawing in the same manner as in the case of FIG. 4, and a block made of cement or the like is placed on top of it. 40 are stacked.

This prevents water from seeping into the embankment 20 from the river 30 and prevents breakage of the embankment 20.

The width of the protrusion 4 may be other than that shown in FIG. 2, and for example, the protrusions and recesses may be halved, and the protrusion 4 may have a desired height.

In addition to the non-woven fabrics 1 and 5 used for cushioning and slip prevention, a mat made of a material having long-term corrosion resistance, a relatively high coefficient of friction, and an appropriate elasticity may be used.

Further, the non-woven fabric 5 may be attached to the lower surface of the stainless steel thin plate 2 in the water-permeable mat according to the second embodiment, if necessary, as in the third embodiment.

[Effect of device]

As described above, according to the present invention, since the non-woven mat made of synthetic fibers is bonded to the upper surface of the stainless thin plate with the corrosion-resistant adhesive to form the water-blocking mat, the protection from the soil organisms is complete, and The non-woven mat protects the thin stainless plate by the cushioning function against rocks and dumped materials, and improves the workability of laying.

In addition, since the uneven shape is formed in the appropriate place of the stainless steel thin plate, the bond with the background becomes stronger and the slip can be prevented.

Further, since the non-woven mat is provided on both upper and lower surfaces of the stainless thin plate, the stainless thin plate can be further protected against impact from both upper and lower surfaces.

[Brief description of drawings]

FIG. 1 is a structural view showing an example of a water-impervious mat according to the present invention. FIG. 1A is a perspective view and FIG. 1B is a sectional view. Second
The figure is a structural view showing the second embodiment, and FIG.
FIG. 3B is a sectional view. FIG. 3 is a structural view showing a third embodiment, FIG. 3A is a perspective view and FIG. 3B is a sectional view. FIG. 4 shows a state in which the water blocking mat according to the present invention is laid in a hole, and FIG. 5 shows a state in which the water blocking mat is laid on an embankment. 1,5 …… Nonwoven fabric, 2 …… Stainless steel thin plate, 3 …… Adhesive, 4 …… Protrusion, 4 ′ …… Concave,

Claims (3)

[Scope of utility model registration request] 1. A water-impervious mat, comprising a non-woven mat made of synthetic fibers bonded to the upper surface of a stainless steel plate having a predetermined size and shape with a corrosion-resistant adhesive. 2. The water-blocking mat according to claim 1, wherein the stainless thin plate is provided with an uneven shape on its surface. 3. The water-impervious mat according to claim 1, wherein a non-woven fabric mat of the synthetic fibers is synthesized on the lower surface of the stainless thin plate with a corrosion-resistant adhesive.