JP6712727B2 - Drainage structure on the laid surface of artificial turf members - Google Patents

Description

The present invention relates to a drainage structure for laying an artificial grass member.

In an outdoor playground where various sports such as baseball, soccer or rugby are performed, an appropriate drainage structure is usually provided so that rainwater does not stay on the surface for a long time. An example thereof is described in Patent Document 1, in which rainwater that has fallen on the ground passes through a water-permeable artificial turf member and a water-permeable asphalt layer laid on the entire surface of the ground and is buried in a crushed stone layer. It flows into the formed underdrain and is drained from the underdrain. Part of the rainwater is also drained into the gutter.

Further, an artificial grass member suitable for laying on a ground or the like has also been proposed. For example, in Patent Document 2, a large number of turf-like piles made of polyethylene are formed on a base cloth using a plain weave cloth made of polypropylene. An artificial turf member is described in which a yarn is planted to form a turf leaf, and an adhesive member such as rubber latex is applied as a backing material on the entire back surface of the base fabric to fix the pile yarn. According to Patent Document 3, the back stitch portion of the pile yarn that appears on the back surface of the artificial turf is heat-fused with a heat roller, so that the pile yarn is prevented from slipping upward without using a backing material. The artificial turf member described above is described.

On the other hand, when constructing a rainwater storage and infiltration tank in the ground, or when the ground where the rainwater storage and infiltration tank is to be built is soft ground, the water storage space forming members that have a resin material as the structural material are stacked in multiple stages and A rainwater storage and permeation tank as a structure, which is covered with a water-permeable sheet, is formed, and one example thereof is described in Patent Documents 4 and 5.

JP, 2009-102913, A JP, 2009-293244, A JP, 11-241308, A JP, 2010-127052, A JP, 2009-24447, A

The drainage structure described in Patent Document 1 uses a water-permeable artificial grass member, and rainwater easily permeates to the back surface side of the artificial grass member. However, there is a limit to the rainwater treatment capacity in the underdrain and gutters, and when there is a large amount of rainfall at one time, such as a torrential rain, the rainwater that could not be treated in the ditch or the rainwater that could not flow into the underdrain, It tends to be in a state of staying on the surface layer such as a playground for a long time. On the other hand, as the artificial turf member, as described in Patent Document 2, a backing member made of an adhesive member is applied to the entire back surface of the base fabric to fix the pile yarns. In the actual use, it is usual to form a large number of water-permeable holes so as to penetrate the base cloth and the backing material so as to improve the water drainage property, because it impedes the water permeability. The artificial turf member of the form described in Patent Document 3 does not use a backing material made of an adhesive member as a means for preventing the pile yarn from slipping upward, so that it is possible to ensure the water permeability of the base fabric. However, no particular consideration has been given to constructing a drainage structure of the artificial grass member laying surface that can withstand even a large amount of rainfall, using the artificial grass member of that form.

The present invention has been made in view of the above circumstances, and even if there is a large amount of rainfall on the artificial turf member, the drainage structure of the artificial turf member laying surface that can appropriately drain the rainwater Is to provide the first problem. A second object is to provide a drainage structure for the artificial grass member laying surface, which can maintain the drainage function of the drainage structure favorably for a long period of time.

The drainage structure of the artificial turf member laying surface according to the present invention is a structural material comprising an artificial turf member in which turf-like pile yarns are planted in a water-permeable base fabric and a resin material embedded under the artificial turf member. The pile yarn that has been planted is heated and melted on the lower surface side of the base fabric to prevent the pile yarn from slipping upward, and the water on the artificial grass member is After soaking in the base cloth, it permeates the base cloth and flows into the rainwater storage/infiltration tank.

In the drainage structure of the artificial turf member laying surface according to the present invention, the rainwater pouring on the artificial turf member permeates the base cloth after being immersed in the permeable base cloth, and the ground is formed below the artificial turf member. It flows into a rainwater storage and infiltration tank that has a resin material embedded therein as a structural material. The inflowing rainwater temporarily stays in the rainwater storage and infiltration tank and permeates into the surrounding ground with time. The rainwater storage and infiltration tank that uses a resin material as a structural material is not limited, but rainwater storage and infiltration tanks such as those described in Patent Documents 4 and 5 described above can be preferably used. By using a resin material as a structural material, it is possible to secure a required strength and ensure a high porosity as a rainwater storage and infiltration tank, and to increase the rainwater storage volume per unit volume as a rainwater storage and infiltration tank. You can Further, since the rainwater storage/infiltration tank itself is a structure and the resin material is used as the structural material, it is possible to easily bury the rainwater storage/infiltration tank of any volume in the ground.

Furthermore, the pile yarns planted in the base cloth are heated and melted on the lower surface side of the base cloth to prevent the pile threads from coming out upward, and the pile threads are stably fixed to the base cloth. Therefore, unlike the conventional artificial grass member, it is not necessary to apply an adhesive member as a backing material on the entire back surface of the base cloth for the purpose of fixing the pile yarn, and the water permeability of the base cloth having water permeability is inhibited. It is maintained as it is without being done. Further, as described above, the rainwater permeates the water-permeable base cloth and then permeates the base cloth and flows into the rainwater storage/infiltration tank. Therefore, the base cloth functions as a filtering material and the artificial grass member. It is possible to prevent soil and gravel existing on the surface from flowing into the rainwater storage and infiltration tank. Therefore, it is possible to prevent the volume of the rainwater storage and infiltration tank from decreasing, and it becomes possible to extend the life of the drainage structure and make it maintenance-free.

In one aspect of the drainage structure of the artificial turf laying surface according to the present invention, a plurality of the pile yarns are planted in the base cloth as a substantially linear pile thread row, and the base cloth has a pile thread row of A plurality of rows are formed in parallel with each other, and the pile threads constituting the pile rows are heated and melted at least at the positions of the implantation holes.

In this aspect, the area of the base fabric located between the pile rows can be widely used as a rainwater permeation area, and the planting holes formed when the pile threads are planted are heated by the pile threads. Since it is closed by melting, it is possible to more reliably prevent the sediment, gravel and the like existing on the surface of the artificial grass member from flowing into the rainwater storage and infiltration tank.

In one aspect of the drainage structure of the laid surface of the artificial grass member according to the present invention, the artificial grass member includes a filling layer in which the granular material is filled between the pile yarns. With the artificial grass member of this form, pile yarns are less likely to fall over, and it is possible to obtain a ground or the like laid with an artificial grass member provided with an artificial grass member that is less likely to cause variations in impact absorption even when used for a long time.

In one aspect of the drainage structure of the artificial turf member laying surface according to the present invention, a plurality of the artificial turf members are laid above the rainwater storage and infiltration tank, and the end portions and the end portions of the respective base fabrics of the adjacent artificial turf members. It is characterized in that a joining tape is attached so as to bridge the lower surface of each base cloth between them. In this aspect, it is possible to reliably prevent a gap due to misalignment between the adjacent artificial grass members, so it is possible to more reliably prevent dirt and sand from entering the rainwater storage and infiltration tank through the artificial grass members. Can be stopped. Thereby, the life of the drainage structure is further extended.

According to the present invention, even if there is a large amount of rainfall on the artificial turf member, it is possible to obtain a drainage structure of the artificial turf member laying surface that can appropriately perform drainage treatment of the rainwater. Further, it is possible to obtain the drainage structure of the artificial turf member laying surface, which can favorably maintain the drainage function of the drainage structure for a long time.

The typical sectional view showing one embodiment of the drainage structure of the artificial grass member installation surface by the present invention. The figure for demonstrating an example of the rainwater storage infiltration tank which uses a resin material as a structural material. The side view (Fig.3 (a)) which shows an example of the artificial turf member used by the drainage structure of the artificial turf member installation surface by this invention, and the perspective view which looked at it from the back (FIG.3(b)). The side view which shows the other example of the artificial grass member used by the drainage structure of the artificial grass member installation surface by this invention. The figure explaining one mode at the time of laying an artificial grass member on a rainwater storage penetration tank.

Hereinafter, some embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic sectional view showing an embodiment of a drainage structure for an artificial grass member laying surface according to the present invention. In the illustrated drainage structure 50, reference numeral 1 is an artificial grass member, which will be described later, and the required number of artificial grass members are spread over the ground surface 2 such as a playground or a park. Then, in the ground 3 below the artificial grass member 1, a rainwater storage and infiltration tank 4 having a resin material as a structural material is embedded. The rainwater storage and infiltration tank 4 may be embedded in a lower portion over the entire area of the artificial grass member 1 that is spread, or may be partially embedded as illustrated.

In this example, the upper surface side of the ground 3 is leveled with crushed stones 5 and the like, and a water-permeable asphalt layer (not shown) is provided thereon as needed, and an artificial turf member is provided thereon. 1 is laid out. The artificial grass member 1 may be directly laid on the upper surface of the rainwater storage and infiltration tank 4 buried in the ground 3, but preferably, the water permeability is provided between the back surface of the artificial grass member 1 and the rainwater storage and infiltration tank 4. An appropriate buffer layer 6 including is provided.

FIG. 2 shows an example of a rainwater storage/infiltration tank 4 having the above-mentioned resin material as a structural material. In FIG. 2, reference numeral 40 denotes a water storage space forming member which is a structural material made of a resin material (for example, polypropylene resin), and a plurality of vertical structural bodies 41 are formed in a V-shape in cross section and in a mountain shape. Form a continuous shape. The upper surface and the lower surface of the water storage space forming member 40 are substantially parallel to each other as a whole, and the upper end edges of the adjacent vertical structures 41 have upper end surfaces 44 having a concave portion 42 and a convex portion 43 in the longitudinal direction. The lower end edges are continuous with each other at the lower end surface 45 having an opening into which the region of the convex portion 43 formed on the upper end surface 44 can enter. As shown in the figure, the water storage space forming members 40 of the same form are stacked in multiple stages while changing the direction by 90 degrees to form a rainwater storage and infiltration tank 4, and between the longitudinal structures 41 in the rainwater storage and infiltration tank 4. The space existing in is used as a space 46 for storing water. Further, in the illustrated example, a lid member 47 is arranged on the upper surface of the uppermost water storage space forming member 40a in the water storage space forming members 40 that are stacked in multiple stages to form the rainwater storage infiltration tank 4. The upper surface of 4 is a flat surface.

The rainwater storage and infiltration tank 4 having the above structure is described in Patent Document 4 above. In the present invention, the rainwater storage and permeation tank 4 having a resin material as a structural material is not limited to this, and, for example, rainwater having a resin material as a structural material known in the art, such as the one described in Patent Document 5 is used. A storage permeation tank can be appropriately selected and used.

In construction, first, excavation for embedding the rainwater storage and infiltration tank 4 is performed. After performing a leveling process with crushed stone or the like on the excavated bottom surface, a water-permeable sheet 7 such as a non-woven fabric is arranged in the excavated portion, and the water storage space forming members 40 described above are arranged in multiple stages to arrange rainwater. The storage permeation tank 4 is formed. Then, the periphery thereof is covered with the water-permeable sheet 7 described above. Although it can be omitted, as shown in FIG. 2, the lid member 47 is arranged on the uppermost water storage space forming member 40a. By changing the number and the number of stages of the water storage space forming members 40, it is possible to easily form the rainwater storage permeation tank 4 having a resin material having a required water storage volume as a structural material. Next, as needed, a buffer layer 6 is formed by arranging a water-permeable buffer material on the upper surface of the buried rainwater storage/infiltration tank 4, and the rainwater storage/infiltration tank 4 and the buffer layer 6 are entirely water-permeable as described above. Enclose with a sex sheet 7. After that, the artificial grass member 1 described below is spread on the ground surface 2 including at least the upper surface of the rainwater storage and infiltration tank 4.

With reference to Drawing 3 and Drawing 4, artificial grass member 1 used for drainage structure 50 of the artificial grass member installation surface by the present invention is explained. The artificial grass member 1 is basically composed of a water-permeable base cloth 10 and grass-leaf-like pile yarns 20 planted in the base cloth 10. In the artificial turf member 1a shown in FIG. 3, the pile yarn 20 is planted in the base fabric 10 with a part 21 thereof extending to the back surface side of the base fabric 10. The pile yarns 20 are planted in the base fabric 10 so that the pile yarns 20 form a substantially linear pile yarn row 22, and the plurality of pile yarn rows 22 are parallel to each other. It is planted on the cloth 10.

In the artificial turf member 1a according to the present invention, all or at least a part of the portion 21 of the pile yarn 20 planted in the base cloth 10 located on the back surface of the base cloth is brought into contact with a heating roller (not shown) or an appropriate laser. It is heated and melted on the lower surface side of the base fabric 10 by means such as irradiating with light to prevent it from accidentally coming out. The heating and melting are preferably heating and melting between the pile yarns 20, but the heating and melting may be performed integrally with the base fabric 10.

Therefore, as shown in FIG. 3B, except for the portion 21 of the pile yarn 20 planted in the base cloth 10 located on the back surface of the base cloth, the base cloth 10 is exposed as it is in other regions. In this region 24, high water permeability is ensured. Naturally, no artificial through hole is formed in this region 24.

By laying the artificial turf member 1a described above on the rainwater storage and infiltration tank 4 having the resin material embedded in the ground 3 as a structural material, directly or through the buffer layer 6 having water permeability, As described based on 1, the drainage structure 50 of the artificial grass member laying surface according to the present invention is formed. As described above, in the drainage structure 50 of the artificial turf member laying surface according to the present invention, the rainwater pouring on the artificial turf member 1 is soaked in the base fabric 10 and then the base fabric 10 is exposed as it is. The water passes through the existing region 24 and flows into the rainwater storage and infiltration tank 4 located below the base fabric 10. Then, the inflowing rainwater temporarily stays in the rainwater storage and infiltration tank 4, and permeates into the surrounding ground 3 with time as shown by the arrow in FIG.

That is, in the drainage structure 50 of the artificial turf member laying surface according to the present invention, as described above, by adopting the rainwater storage/infiltration tank 4 having the resin material as a structural material, the rainwater storage/infiltration is ensured while ensuring the required strength. A high porosity can be secured as the tank 4, and the rainwater storage amount per unit volume as the rainwater storage and infiltration tank can be increased. Further, since the rainwater storage/infiltration tank 4 itself is a structure and the resin material is used as the structural material, it is possible to easily bury the rainwater storage/infiltration tank of any volume in the ground.

Further, by adopting the artificial grass member 1a described above, in addition to the stable planted state of the pile yarn 20 on the base cloth 10, the base cloth 10 is exposed as it is in a large area. Since the area 24 is secured, high water permeability can be secured, and the rainwater on the artificial turf member 1a can be swiftly flown into the rainwater storage and infiltration tank 4, which serves as a drainage structure for the laying surface of the artificial turf member. The drainage function of is greatly improved.

Further, the artificial grass member 1a described above does not require the base cloth 10 itself to function as a filter and does not need to form a through hole for water permeation in the base cloth 10. It is possible to reliably prevent the inflow of earth and sand, gravel, and the like into the interior, and to omit maintenance work such as regularly cleaning the rainwater storage and infiltration tank 4.

FIG. 4 shows another form of the artificial grass member 1. In this artificial grass member 1b, the portion 21 of the pile yarn 20 is heated and melted at the position of the planting hole 25 formed when the pile yarn 20 is sewn (fastened) to the base fabric 10 by using a device such as a sewing machine. I am trying to do it. By forming the heat-melted region 26 at this position, the planting hole 25 can be closed, and the earth and sand, gravel and the like existing on the surface of the artificial grass member 1b flow into the rainwater storage and infiltration tank 4. Can be blocked more reliably. As shown in FIG. 4, in addition to this, a region 27 where the pile yarn 20 is heated and melted may be formed at another position on the back surface of the base portion 10.

In the artificial turf member 1 described above, the material of the pile yarn 20 forming the artificial turf member is not particularly limited, and all the pile yarn materials used in the conventional artificial turf member can be used. A synthetic resin having excellent abrasion resistance is preferable, and examples thereof include a polyethylene resin and a polypropylene resin. The base fabric 10 is preferably a woven fabric made of polypropylene resin or polyester resin. When polyethylene-based resin or polypropylene-based resin is used as the material for the pile yarn, it is more preferable to use polyester-based resin as the material for the base fabric 10 because the melting point is higher than those materials.

In addition, when a plurality of artificial turf members 1 are laid directly on the rainwater storage/infiltration tank 4 or via the buffer layer 6 having water permeability, the artificial turf members adjacent to each other must be exercised unless sufficient caution is exerted. A gap may occur between the end portions of the base fabric 10 in Nos. 1 and 1. When such a gap is created, earth and sand and gravel will enter the rainwater storage and infiltration tank 4 through the gap. FIG. 5 is a laying mode of the artificial turf member 1 for the purpose of avoiding it. Here, the abutting surfaces of the artificial turf members 1 and 1 described above, that is, the adjacent base fabrics 10 and 10 are arranged. The joining tape 30 is attached between the end portions so as to bridge the lower surface of each base cloth. By using such a bonding tape 30, it becomes possible to reliably prevent the entry of earth and sand or gravel from the gap between the base fabrics 10 and 10.

In the drainage structure 50 for the artificial grass member laying surface according to the present invention, as the artificial grass member 1 to be used, an artificial grass member having a filling layer in which the granular material is filled between the pile yarns 20 can be used, although not shown. .. Such an artificial turf member is described, for example, in the above-mentioned JP 2009-293244A. When the artificial grass member of this form is used, the pile yarn 20 is less likely to fall over, and it is possible to obtain a ground or the like on which an artificial grass member is laid, which is unlikely to cause variations in impact absorbability even when used for a long time.

In the artificial turf member laying surface drainage structure 50 according to the present invention, as shown in FIG. 1, when the water-permeable buffer layer 6 is provided between the rear surface of the artificial turf member 1 and the upper surface of the rainwater storage/infiltration tank 4. As the cushioning material, a conventionally known one can be appropriately used. As one example, a water-permeable cushioning material described in JP-A-2004-232365, in which soft chips such as rubber are bound to each other with a binder containing polyamide fiber, and described in JP-A-5-247904. A permeable cushion material layer comprising at least the vulcanized rubber sponge pulverized material of the vulcanized rubber pulverized material and the vulcanized rubber sponge pulverized material, and the pulverized material adhered to each other, and the cushion material layer And a water-permeable sheet layer adhered to at least one of the both surfaces of the elastic pavement material.

Further, in the artificial grass member laying surface drainage structure 50 according to the present invention, the artificial grass member 1 to be used may be one kind of artificial grass member selected from the artificial grass members 1a and 1b, and is appropriately selected from them. The selected ones may be used in combination.

50... Drainage structure for laying surface of artificial turf member according to the present invention,
1 (1a, 1b)... Artificial grass member,
2... Ground surface,
3... Ground,
4... Rainwater storage and infiltration tank with resin material as structural material,
5... crushed stone,
6... buffer layer,
7... Water permeable sheet,
10... a base cloth having water permeability,
20... Turf-leaf pile yarn,
21... A portion of the pile yarn planted in the base cloth, which is located on the back surface of the base cloth,
22... Linear pile yarn array,
24: an area where the base cloth is exposed as it is,
25...planting hole,
40... a water storage space forming member which is a structural material made of a resin material,
46... Space for storing water.

Claims (4)

The drainage structure of the artificial grass member laying surface,
An artificial turf member in which turf-like pile yarns are planted in a water-permeable base fabric, a rainwater storage and infiltration tank having a resin material embedded below the artificial turf member as a structural material, and the periphery of the rainwater storage and infiltration tank And a water-permeable sheet covering the
The piled yarn that has been planted is heated and melted on the lower surface side of the base fabric to prevent the pile yarn from slipping upward,
Water on the artificial turf member passes through the base fabric after elaborate penetrates the base fabric, while through the water permeable sheet retained flows into the rainwater storage impregnation vessel, through the water permeable sheet The drainage structure of the artificial grass member laying surface is characterized in that it penetrates into the surrounding ground . A plurality of pile yarns are planted in the base cloth as a substantially linear pile yarn row,
A plurality of pile yarn rows are formed in parallel with each other on the base cloth,
2. The drainage structure for an artificial grass member laying surface according to claim 1, wherein the pile yarn constituting the pile row is heated and melted at least at the position of the planting hole. The drainage structure of the artificial turf member laying surface according to claim 1 or 2, wherein the artificial turf member includes a filling layer in which a granular material is filled between the pile yarns. A plurality of the artificial grass members are laid above the rainwater storage and infiltration tank,
The joining tape is attached so that the lower surface of each base cloth is bridged between the end portions of each base cloth of adjacent artificial grass members. The drainage structure of the artificial turf member laying surface according to 1 above.

Images