Barrier net, artificial turf equipment and ground construction method

Abstract

To prevent the outflow of abrasion dust and rubber chips from an artificial lawn.SOLUTION: In a ground having a paved surface 11, an artificial lawn 12 laid on the paved surface 11, and a fence 13 installed around the paved surface 11, a barrier net 20 is installed at a base end part of the fence 13 on the paved surface 11 side. The barrier net 20 is made of a sheet material having water permeability. The peripheral edge of the artificial lawn 12 has an underlay part 21 laid between the paved surface 11 and the artificial lawn 12, and a rising part 22 rising from the underlay part 21 along the fence 13.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a barrier net, an artificial turf facility, and a construction method for a ground. [Background technology]

[0002] JP 2016-20574 A discloses an invention relating to an artificial turf structure in which an infilled artificial turf made of granular material between the piles is laid on a poorly permeable or non-permeable soil-based base. The publication discloses that the structure includes a crushed stone layer on the base, and a drainage filter including a drainage tube in a fiber sheet base material as a drainage layer arranged on the crushed stone layer, and the infilled artificial turf is laid on the drainage filter.

[0003] JP 2017-160731 A discloses an artificial turf that can suppress temperature rise, and a method for manufacturing yarn for the pile. The publication also discloses that the pile is made porous. It also discloses that granular materials such as sand and rubber chips are filled between the piles. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-20574 A [Patent Document 2] JP 2017-160731 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in artificial turf, resin is used for the pile, and wear debris is generated during use. Rubber chips are also used as the filler between the piles. It is necessary to prevent wear debris and rubber chips from the artificial turf from flowing out of the ground. [Means for solving the problem]

[0006] The barrier net disclosed here is a component installed at the base end of a fence on the paved surface side in a ground having a paved surface, a covering made of artificial turf or a mat laid on the paved surface, and a fence installed around the paved surface. The barrier net is made of a water-permeable sheet material, and has an underlayment laid between the paved surface and the covering at the periphery of the covering, and a rising part rising from the underlayment along the fence. The installation of such a barrier net can effectively prevent wear debris and the like from flowing out of the ground.

[0007] The rising portion of the barrier net may have a fixing portion that is fixed to the fence. Also, a filter may be further provided on at least one of the side of the rising portion facing the carpet and the side of the rising portion facing the fence. Also, the filter may be installed on the underlay of the barrier net. The barrier net and the filter may constitute an artificial turf facility that is laid on a ground with a fence appropriately installed around the periphery of the paved surface. The artificial turf facility may have a filler that is filled between the piles on the artificial turf base fabric. The filler does not include rubber chips, and may be at least one of sand, soil, and natural organic filler. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional view showing a schematic diagram of an artificial turf ground 10. As shown in FIG. [Diagram 2] FIG. 2 is a cross-sectional view showing a schematic diagram of another embodiment of the artificial turf ground 10. As shown in FIG. [Diagram 3] FIG. 3 is a cross-sectional view showing a schematic diagram of another embodiment of the artificial turf ground 10. As shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The barrier net, artificial turf equipment, and ground construction method disclosed herein will be described below with reference to the drawings. Note that the present invention is not limited to the following embodiments. Each drawing is drawn diagrammatically and does not necessarily reflect the actual product. Also, each drawing shows only an example, and does not limit the present invention unless otherwise specified. Also, the same reference numerals are appropriately assigned to members and parts that perform the same function, and duplicate explanations will be omitted.

[0010] Fig. 1 is a cross-sectional view showing a schematic diagram of an artificial turf ground 10. As shown in Fig. 1, the artificial turf ground 10 has a paved surface 11, artificial turf 12, a fence 13, a barrier net 20, and a filter 30. Here, the artificial turf 12, the barrier net 20, and the filter 30 constitute an artificial turf facility 50.

[0011] <Pavement surface 11> The paved surface 11 is a surface that has been paved so that the artificial turf 12 can be laid. The paved surface 11 is a flat surface on which the artificial turf 12 can be laid. The paved surface 11 is made up of a roadbed, a roadbed, crushed stone, asphalt, and the like, and is constructed flat and precisely to match the level of the artificial turf 12. The fence 13 is installed around the paved surface 11. The fence 13 rises from the ground around the paved surface 11. The fence 13 may be made up of, for example, a wire mesh or a panel. The fence 13 may also be in the form of a wall made of concrete or concrete blocks. The height of the fence 13 may vary depending on the use of the artificial turf ground 10. For example, if the artificial turf ground 10 is a baseball field, the fence 13 may also be called a ball-proof fence.

[0012] <Groove 14> The artificial turf ground 10 may have a drainage ditch 14 around the pavement surface 11, in other words, at the base end of the fence 13 on the pavement surface 11 side, or at the base of the fence 13 on the pavement surface 11 side. The ditch 14 may have a U-shaped cross section, a circular arc, or a triangle with a narrower lower part, and is also called a side gutter. A lid 14a is attached to the ditch 14. The lid 14a may be, for example, leveled with the pavement surface 11. The lid 14a may also have a hole formed therein that allows water to pass through to the ditch 14. Although not shown, a drain for drainage may be buried in the pavement surface 11 as appropriate. In addition, a net for wind and sand protection may be attached to the fence 13. These are intended to mitigate the effects of wind in the ground when the wind is strong, and to prevent sand and dust generated in the ground from scattering outside the ground. It is not necessary to provide the drainage groove 14 at the base end of the fence 13 on the paved surface 11 side (see FIG. 2).

[0013] <Artificial grass 12> The artificial turf 12 has a base cloth 12a and pile 12b. Although the artificial turf 12 is given here as an example of a covering laid on the pavement surface 11, the covering laid on the pavement surface 11 may be a mat. That is, a mat that is not planted with pile 12b that resembles leaves like the artificial turf 12 may be used instead of the artificial turf 12. Here, the artificial turf 12 will be described as an example. The artificial turf 12 may have a connection portion 12d and may be connected appropriately. In FIG. 1, a gap is shown between the base cloth 12a of the artificial turf 12 and the pavement surface 11, but in reality, the artificial turf 12 is installed on the pavement surface 11, so there is no gap.

[0014] <Base fabric 12a> The base fabric 12a is a sheet-like base fabric. The material and form of the base fabric 12a are not particularly limited. For example, the base fabric 12a can be formed as a plain weave fabric made of a thermoplastic resin such as polypropylene or polyethylene. Pile threads 12b are planted in the base fabric 12a. A backing layer is formed on the back surface of the base fabric 12a. The backing layer is a layer to which a backing agent is applied, and prevents the pile threads 12b from falling off. The backing layer may be made of, for example, a mixture of polyethylene and SBR latex. The backing layer may be omitted as appropriate.

[0015] <Pile 12b> The pile 12b has a shape resembling a blade of grass and rises from the base fabric 12a. A large number of piles 12b may be planted in the base fabric 12a. The material and shape of the pile 12b are not particularly limited as long as the appearance of the blade of grass can be realized. For the pile 12b, flat filament yarns (yarns) made of thermoplastic resin such as polypropylene and polyethylene are used. The pile 12b may be fixed to the base fabric 12a by sewing the plastic yarns (yarns) that will become the pile 12b into the base fabric 12a using a tufting machine. The length from the surface of the base fabric 12a to the tip of the pile 12b is also not particularly limited. The length from the surface of the base fabric 12a to the tip of the pile 12b can be relatively short, about 20 mm≦W1<50 mm (generally called short pile), or relatively long, about 50 mm≦W1≦70 mm (generally called long pile). The longitudinal cross-sectional shape of the pile 12b may be triangular, rectangular, circular, star-shaped, etc.

[0016] <Filling material 12c> Filler 12c is filled between the piles 12b on the surface of the base fabric 12a. The filler 12c serves as a cushioning material to prevent players from getting injured during play, and also serves to protect the piles 12b. The filler 12c is also used to adjust the bounce of the ball used in the game and the ease of running, and can improve the ease of playing the game on the artificial turf 12. In addition, by filling the filler 12c, the artificial turf becomes heavier as a whole, and the artificial turf is installed stably. Although such filler 12c can be omitted, it is particularly preferable to use it when the piles 12b are relatively tall piles called long piles.

[0017] At least one of elastic filler and hard filler can be used for the filler 12c. As the elastic filler, a relatively soft filler, for example, rubber chips made of natural organic filler or crushed waste tires, can be used. As the hard filler, for example, sand can be used. Both the hard filler and the elastic filler may be filled. In the embodiment shown in FIG. 1, the filler 12c may be composed of sand, soil, natural organic filler, etc. without including rubber chips. In this case, the environmental load can be reduced by not including rubber chips. As the natural organic filler, a material made by crushing coconut shells can be used. One or more types of sand, soil, natural organic filler, etc. may be appropriately blended. By filling the filler 12c between the piles 12b on the base fabric 12a with the filler 12c, the artificial turf including the filler 12c becomes heavy.

[0018] When the infill material contains rubber chips, the fence edge area A1 should preferably have a smaller amount of rubber chips than the play zone A2 where the artificial turf 12 is laid, that is, the area on the inside away from the fence 13. By having a smaller amount of rubber chips in the area A1 near the fence 13, it is expected that wear debris and infill generated in the play zone A2 will be captured by the artificial turf in the fence edge area A1 (also called barrier artificial turf). The wear debris and infill of the pile 12b captured in the fence edge area A1 should preferably be collected by a grass cleaner such as a turf cleaner. In this way, wear debris and infill of the pile 12b are captured in the fence edge area A1, and the wear debris and infill of the pile 12b are reduced, so that the wear debris and infill of the pile 12b that flows out of the artificial turf 12 can be reduced.

[0019] <Barrier Net 20> As described above, the barrier net 20 is used on a ground having a paved surface 11, artificial turf 12 laid on the paved surface 11, and a fence 13 installed around the perimeter of the paved surface 11. The barrier net 20 is installed at the base end of the fence 13 on the paved surface 11 side.

[0020] The barrier net 20 is made of a water-permeable sheet material overall. The barrier net 20 has an underlay 21 and a rising portion 22. The underlay 21 is a portion of the barrier net 20 that is laid between the pavement surface 11 and the artificial turf 12, at the periphery of the artificial turf 12 as a covering. The rising portion 22 is a portion that rises from the underlay 21 along the fence 13.

[0021] As shown in Fig. 1, when a drainage groove 14 is provided on the pavement surface 11 at the base end of the fence 13 on the pavement surface 11 side, the underlay 21 may be placed over the cover 14a of the groove 14. This causes the holes through which water passes to the groove 14 to be covered by the underlay 21 of the barrier net 20. Therefore, wear debris from the artificial turf 12 is captured by the barrier net 20 and is less likely to flow into the groove 14. In addition, the artificial turf 12 is filled with the filler material 12c, making the artificial turf 12 heavier, which stabilizes the underlay 21 laid between the artificial turf 12 and the pavement surface 11 and makes it less likely to slip. In addition, if the underlay 21 is simply fixed in a sandwiched state between the artificial turf 12 and the pavement surface 11, the barrier net 20 can be easily replaced.

[0022] The rising portion 22 of the barrier net 20 may have a fixing portion 22a for fixing to the fence 13. The fixing portion 22a may have grommets at predetermined intervals (e.g., 25 cm intervals) through which a string for attaching to the fence 13 can be passed. By providing the rising portion 22 of the barrier net 20 with the fixing portion 22a for fixing to the fence 13, the rising portion 22 can be installed without shifting relative to the fence 13. For example, the rising portion 22 of the barrier net 20 may be fixed to the fence 13 with a cable tie or the like. The rising portion 22 of the barrier net 20 may be fixed at a height of about 400 mm to 500 mm from the pavement surface 11, for example.

[0023] The barrier net 20 may be, for example, a sheet such as a privacy net or sand-proof net. The barrier net 20 may have pores, for example, with a diameter of Φ0.1 mm or more and 2.0 mm or less. That is, the pores may have round holes or holes equivalent to the round holes with a diameter of approximately Φ0.1 mm or more and 2.0 mm or less. From the viewpoint of ensuring water permeability, the diameter of the pores is preferably 0.3 mm or more, more preferably 0.45 mm or more, and from the viewpoint of capturing wear debris from the artificial turf 12, the diameter of the pores is preferably 1.0 mm or less, more preferably 0.6 mm or less.

[0024] The barrier net 20 may be made of a sheet material having a lattice-like mesh with a vertical and horizontal pitch in the range of 0.1 mm to 2.0 mm. In this case, the orientation of the vertical and horizontal mesh of the barrier net 20 is not limited, and the vertical and horizontal mesh may be arranged diagonally. The formation of pores of a certain size in the barrier net 20 ensures the required water permeability. In this case, the vertical and horizontal pitch is preferably 0.3 mm or more, more preferably 0.45 mm or more, from the viewpoint of ensuring water permeability, and is preferably 1.0 mm or less, more preferably 0.6 mm or less, from the viewpoint of capturing wear debris from the artificial turf 12.

[0025] In addition, the barrier net 20 may have an appropriate opening ratio in terms of water permeability. The opening ratio may be, for example, 15% or more, preferably 25% or more, and more preferably 30% or more. Here, the opening ratio may be obtained as a ratio of holes to the surface area of ​​the barrier net 20. The barrier net 20 may have a required durability, and an upper limit of the opening ratio may be determined from this viewpoint. The upper limit of the opening ratio may be, for example, 50% or less, preferably 45% or less, and more preferably 40% or less. For example, a raschel woven fabric or a welded mesh may be used for the barrier net 20. More specifically, for example, a welded mesh of polyvinyl chloride or polypropylene, a polypropylene raschel woven sheet, or the like may be used for the barrier net 20. For example, a long sheet having a width equal to the combined width of the underlay 21 and the rising portion 22 may be prepared, folded at the boundary between the underlay 21 and the rising portion 22, and installed at the base end of the fence 13.

[0026] In this way, by providing the barrier net 20, which is made of a water-permeable sheet material and has an underlay 21 laid between the pavement surface 11 and the floor covering (artificial turf 12 in this embodiment) at the periphery of the floor covering, and a rising portion 22 rising from the underlay 21 along the fence 13, it is possible to prevent wear debris from the artificial turf 12 from flowing out of the artificial turf 12 while maintaining the water permeability of the artificial turf 12. The wear debris from the artificial turf 12 may be collected as appropriate using a turf cleaner or the like. By providing the barrier net 20 in this way, it is possible to reduce the impact on the environment caused by wear debris from the artificial turf 12 flowing out. In this way, it is preferable that the artificial turf equipment 50 is provided with the barrier net 20.

[0027] <Filter 30> The filter 30 is made of a material having water permeability and a filtering function. The filter 30 can be made of a material such as a nonwoven fabric. For example, felt is used for the filter 30. The water permeability coefficient of the filter 30 is set to, for example, 10 -5 m / s or more, preferably 10 -4.5 m / s or more, preferably 10 -4 m / s or more. Also, in terms of capturing required fine particles such as wear debris from the artificial turf 12, -2 m / s or less, preferably 10 -2.5 m / s or less, preferably 10 -3 m / s or less. In this case, the filter 30 has water permeability equivalent to that of a layer of sand, for example, and can ensure the required water permeability of the artificial turf 12 while also effectively capturing the wear of the fine artificial turf 12. By ensuring water permeability in the filter 30, the drainage of the artificial turf ground is improved, for example, water is less likely to float on the artificial turf ground. On the other hand, from the viewpoint of capturing the required fine particles, it is preferable to make the mesh of the filter 30 finer. In order to achieve both of these viewpoints, it is preferable that the filter 30 has an appropriate water permeability.

[0028] In Figure 1, the filter 30 is attached to the side of the rising portion 22 facing the artificial turf 12. This makes it possible for wear debris from the artificial turf 12 and rubber chips contained in the infill material to be captured inside the rising portion 22 of the barrier net 20. In this way, the rising portion 22 of the barrier net 20 is less likely to become clogged, and the service life of the barrier net 20 can be extended. In this way, it is preferable for the artificial turf equipment 50 to further include a filter 30.

[0029] Fig. 2 is a cross-sectional view showing a schematic diagram of another embodiment of the artificial turf ground 10. In Fig. 2, the filter 30 is attached to the side of the rising portion 22 facing the fence 13. In this case, the filter 30 may be sandwiched between the rising portion 22 and the fence 13. When the filter 30 is attached to the side of the rising portion 22 facing the fence 13, wear debris and rubber chips contained in the filler that have passed through the rising portion 22 of the barrier net 20 may be further captured by the filter 30. The filter 30 may be attached to both the side of the rising portion 22 facing the artificial turf 12 and the side facing the fence 13.

[0030] Thus, the filter 30 is not limited to the form shown in FIG. 1, and may be disposed on at least one of the side of the rising portion 22 facing the artificial turf 12 and the side of the rising portion 22 facing the fence 13. In the form shown in FIG. 1 and FIG. 2, the filter 30 may be fixed to the fence 13 together with the rising portion 22 by a bundling member, such as a string, attached to the fixing portion 22a that fixes the rising portion 22. For this reason, although not shown, the filter 30 may be provided with a fixing portion similar to the fixing portion 22a of the rising portion 22. In addition, the barrier net 20 and the filter 30 may be replaced as appropriate. The replacement timing of the barrier net 20 and the filter 30 may be evaluated based on the period of use, deterioration of water permeability, and the like. For example, the barrier net 20 and the filter 30 may be selected from materials having the required durability in terms of weather resistance, abrasion resistance, and the like so that the service life is about 10 years. In order to ensure performance more reliably, the barrier net 20 and the filter 30 may be operated so as to be replaced every three to five years.

[0031] The construction method of the ground disclosed herein includes a step of laying a carpet and a step of installing a barrier net. In the step of laying the carpet, for example, a carpet made of artificial turf 12 or a mat may be laid on a ground in which a fence 13 is installed around a paved surface 11. In the step of installing the barrier net, a barrier net 20 may be installed at the base end of the fence 13 on the paved surface 11 side. Here, the barrier net 20 may be installed after the carpet made of artificial turf 12 or a mat is laid. Also, the barrier net 20 may be installed at the base end of the fence 13 on the paved surface 11 side, and then the carpet made of artificial turf 12 or a mat may be laid. As described above, the barrier net 20 is made of a water-permeable sheet material, and includes an underlay 21 and a rising portion 22. The underlay 21 is a portion that is laid between the paved surface 11 and the artificial turf 12 at the periphery of the carpet (in this embodiment, the artificial turf 12). The rising portion 22 is a portion that rises from the underlay 21 along the fence 13.

[0032] 1, if a drainage ditch 14 is provided at the base end of the fence 13 on the paved surface 11 side, then in the step of installing the barrier net 20, the underlay 21 of the barrier net 20 may be placed over the lid 14a placed in the ditch 14. As the underlay 21 of the barrier net 20 is placed over the lid 14a placed in the ditch 14, wear debris from the artificial turf 12 is less likely to flow into the ditch 14.

[0033] It is further preferable to include a step of fixing the rising portion 22 of the barrier net 20 to the fence 13. By fixing the rising portion 22 of the barrier net 20 to the fence 13, the upper end of the rising portion 22 of the barrier net 20 is less likely to bend and the rising portion 22 of the barrier net 20 is stabilized without slipping off the fence 13.

[0034] The method may further include a step of installing a filter. Here, in the step of installing the filter, it is preferable that the filter 30 is installed on at least one of the side surface of the rising portion 22 facing the carpet (in this embodiment, the artificial turf 12) and the side surface of the rising portion 22 facing the fence 13. By installing the filter 30 in this manner, the outflow of wear debris from the artificial turf 12 is further reduced. The filter 30 may be placed on the underlay 21 of the barrier net 20. Even when the filter 30 is placed on the underlay 21 of the barrier net 20, the wear debris from the artificial turf 12 is captured by the filter 30, so that the wear debris from the artificial turf 12 is less likely to outflow to the outside.

[0035] FIG. 3 is a cross-sectional view showing a schematic view of another embodiment of the artificial turf ground 10. FIG. 3 shows an embodiment in which the filter 30 is disposed on the underlay 21 of the barrier net 20. For example, in this embodiment, the underlay 21 of the barrier net 20 is laid to a width of about 20 cm from the outer periphery of the artificial turf 12. Furthermore, in the embodiment shown in FIG. 3, the filter 30 is laid on the underlay 21 of the barrier net 20. The filter 30 may be laid from above the underlay 21 of the barrier net 20 to under the artificial turf 12. In this embodiment, the filter 30 may be laid to a width of about 30 cm from the outer periphery of the artificial turf 12 and to a width of about 10 cm inside the underlay 21 of the barrier net 20. The width by which the underlay 21 of the barrier net 20 is laid under the artificial turf 12 and the width by which the filter 30 is laid under the artificial turf 12 may be changed as appropriate. The filter 30 may be made of a nonwoven fabric such as felt as appropriate.

[0036] The filter 30 may be made of nonwoven fabric as described above. In the embodiment shown in FIG. 3, the groove 14 is provided on the outside of the fence 13. In the embodiment shown in FIG. 3, the barrier net 20 is installed at the base end of the fence 13 on the paved surface 11 side. The barrier net 20 is made of a water-permeable sheet material, and has an underlay 21 laid between the paved surface 11 and the artificial turf 12 at the periphery of the artificial turf 12, and a rising part 22 rising from the underlay 21 along the fence 13. This prevents wear debris from the artificial turf 12 from flowing out to the outside of the fence 13. Furthermore, in this embodiment, the filter 30 is disposed on the underlay 21 of the barrier net 20. This allows wear debris from the artificial turf 12 to be captured by the filter 30, so that wear debris from the artificial turf 12 is more effectively prevented from flowing out to the outside of the fence 13.

[0037] In the embodiment shown in Fig. 3, the artificial turf 12 reaches the base end of the fence 13 on the pavement surface 11, but the artificial turf 12 may not reach the base end of the fence 13 and there may be a gap between the artificial turf 12 and the fence 13. Even in this case, the barrier net 20 is installed at the base end of the fence 13 on the pavement surface 11 side, and the underlay 21 of the barrier net 20 has a required width to reach under the artificial turf 12 at the outer periphery of the artificial turf 12. Furthermore, a filter 30 is preferably placed on the underlay 21 of the barrier net 20. This prevents wear debris from the artificial turf 12 from flowing out of the fence 13 even if there is a gap between the artificial turf 12 and the fence 13.

[0038] When the flooring is an artificial turf having a large number of piles 12b planted on a base cloth 12a as shown in Figures 1 to 3, the method may further include a step of filling the spaces between the piles 12b on the base cloth 12a with infill material 12c. In this case, the infill material 12c makes the artificial turf 12 heavier, stabilizing the ground on which the artificial turf 12 is constructed and improving ease of play. In this case, the infill material 12c is preferably made of sand, soil, natural organic filler, or the like, without including rubber chips. The infill material 12c not including rubber chips reduces the environmental impact.

[0039] Although the barrier net disclosed herein has been described in various ways above, the barrier net disclosed herein is not limited to the above-mentioned embodiments and modifications unless otherwise specified. Furthermore, the respective configurations of the various described embodiments and modifications can be appropriately combined as long as they are not mutually inhibiting. [Explanation of symbols]

[0040] 10. Artificial Turf Ground 11. Pavement 12 Artificial Grass 12a Base fabric 12b Pile 12c filler 12d Connection 13. Fence 14 groove 14a Lid 20 Barrier Net 21 Underlay 22 Rising part 22a Fixed part 30 Filters 50 Artificial grass equipment A1 Fence edge area A2 Play Zone

Claims

1. A barrier net is provided for a ground having a paved surface, a mat made of artificial turf laid on the paved surface, and a fence installed around the paved surface, the barrier net being installed at a base end of the fence on the paved surface side, The barrier net is: The sheet material has water permeability, and an underlayment placed between the pavement surface and the carpet at the periphery of the carpet; a rising portion rising from the base portion along the fence; having A barrier net, wherein the height of the raised portion from the paved surface is greater than the height of the artificial turf from the paved surface.

2. The barrier net according to claim 1 , wherein the rising portion of the barrier net has a fixing portion that is fixed to the fence.

3. A barrier net installed at a base end of the fence on the paved surface side in a ground having a paved surface, a covering made of artificial turf or a mat laid on the paved surface, and a fence installed around the paved surface, comprising: The barrier net is: The sheet material has water permeability, and an underlayment placed between the pavement surface and the carpet at the periphery of the carpet; a rising portion rising from the base portion along the fence; having A barrier net, wherein a rising portion of the barrier net has a fixing portion that is fixed to the fence.

4. 4. The barrier net according to claim 1, which is made of a sheet material having pores of Φ0.1 mm to 2.0 mm.

5. 4. The barrier net according to claim 1, wherein the barrier net is made of a sheet material having vertical and horizontal meshes, and the vertical and horizontal pitch is within the range of 0.1 mm or more and 2.0 mm or less.

6. In a ground having a paved surface, a covering made of artificial turf or a mat laid on the paved surface, and a fence installed around the perimeter of the paved surface, a barrier net is installed at a base end of the fence on the side of the paved surface, The barrier net is: The sheet material has water permeability, and an underlayment placed between the pavement surface and the carpet at the periphery of the carpet; a rising portion rising from the base portion along the fence; having The barrier net is made of a sheet material having vertical and horizontal meshes, and the vertical and horizontal pitch is within the range of 0.1 mm or more and 2.0 mm or less.

7. A barrier net as described in any one of claims 1 to 6, further comprising a filter arranged on at least one of a side of the raised portion facing the carpet and a side of the raised portion facing the fence.

8. 8. A barrier net as claimed in any one of claims 1 to 7, further comprising a filter disposed on an underlay of the barrier net.

9. The permeability of the filter is 10 －５ m / s or more 10 －２ 9. The barrier net according to claim 7 or 8, having a strength of not more than m / s.

10. In a ground having a paved surface, a covering made of artificial turf or a mat laid on the paved surface, and a fence installed around the perimeter of the paved surface, a barrier net is installed at a base end of the fence on the side of the paved surface, The barrier net is: The sheet material has water permeability, and an underlayment placed between the pavement surface and the carpet at the periphery of the carpet; a rising portion rising from the base portion along the fence; having The present invention further includes a filter disposed on at least one of a side surface of the rising portion facing the floor covering and a side surface of the rising portion facing the fence, The permeability of the filter is 10 －５ m / s or more 10 －２ Barrier net, less than m / s.

11. In a ground having a paved surface, a covering made of artificial turf or a mat laid on the paved surface, and a fence installed around the perimeter of the paved surface, a barrier net is installed at a base end of the fence on the side of the paved surface, The barrier net is: The sheet material has water permeability, and an underlayment placed between the pavement surface and the carpet at the periphery of the carpet; a rising portion rising from the base portion along the fence; having Further comprising a filter disposed on the underlay of the barrier net, The permeability of the filter is 10 －５ m / s or more 10 －２ Barrier net, less than m / s.

12. An artificial turf facility to be laid on a ground with a fence around the paved surface, An artificial turf having a base fabric and a large number of piles planted in the base fabric; A barrier net installed on the periphery of the artificial turf; Equipped with The barrier net is The sheet material has water permeability, and An underlayment laid between the pavement surface and the artificial turf at the periphery of the artificial turf; a rising portion rising from the base portion along the fence; having The artificial turf equipment, wherein the height of the rising portion from the paved surface is greater than the height of the artificial turf from the paved surface.

13. The artificial turf system according to claim 12, wherein the rising portion of the barrier net has a fixing portion that is fixed to the fence.

14. An artificial turf facility to be laid on a ground with a fence around the paved surface, An artificial turf having a base fabric and a large number of piles planted in the base fabric; A barrier net installed on the periphery of the artificial turf; Equipped with The barrier net is The sheet material has water permeability, and An underlayment laid between the pavement surface and the artificial turf at the periphery of the artificial turf; a rising portion rising from the base portion along the fence; having The artificial turf equipment, wherein the rising portion of the barrier net has a fixing portion that is fixed to the fence.

15. The artificial turf equipment according to any one of claims 12 to 14, further comprising a filter arranged on at least one of the side of the rising portion facing the artificial turf and the side of the rising portion facing the fence.

16. 16. The artificial turf installation according to any one of claims 12 to 15, further comprising a filter disposed on an underlay of the barrier net.

17. 17. The artificial turf system according to claim 12, further comprising a filler material filled between the piles on the base fabric, the filler material not including rubber chips, and at least one of sand, soil, and natural organic filler.

18. A step of laying a carpet made of artificial turf on a ground having a fence around a paved surface; installing a barrier net at a base end of the fence on the pavement surface side; having Here, the barrier net is The sheet material has water permeability, and an underlayment placed between the pavement surface and the carpet at the periphery of the carpet; a rising portion rising from the base portion along the fence; having A construction method for a ground, wherein the height of the rising portion from the paved surface is higher than the height of the artificial turf from the paved surface.

19. 19. The construction method for a ground according to claim 18, further comprising a step of fixing the rising portion of the barrier net to the fence.

20. A step of laying a carpet made of artificial turf on a ground having a fence around a paved surface; installing a barrier net at a base end of the fence on the pavement surface side; having Here, the barrier net is The sheet material has water permeability, and an underlayment placed between the pavement surface and the carpet at the periphery of the carpet; a rising portion rising from the base portion along the fence; having A ground construction method comprising a step of fixing the rising portion of the barrier net to the fence.

21. 21. A method of constructing a ground as described in any one of claims 18 to 20, comprising a step of installing a filter on at least one of the side of the rising portion facing the carpet and the side of the rising portion facing the fence.

22. 22. The artificial turf installation of any one of claims 18 to 21, further comprising the step of installing a filter over an underlay of the barrier net.

23. 23. A ground construction method as claimed in any one of claims 18 to 22, wherein the ground has a drainage ditch at the base end of the fence on the paved surface side, and in the step of installing the barrier net, the underlay of the barrier net is placed over a lid installed in the ditch.

24. The flooring is an artificial turf having a base fabric and a large number of piles planted in the base fabric, 24. The method of constructing a ground according to any one of claims 18 to 23, further comprising the step of filling a filler material between the piles on the base fabric.

25. 25. The method for constructing a ground according to claim 24, wherein the filler does not include rubber chips and is made of at least one of sand, soil, and natural organic filler.

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