JP2529301Y2 - Culvert drainage material - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a drainage drainage material which can be easily constructed and efficiently drained and drained in a place where drainage drainage is required, such as a field, a golf course, a ground, and a roof garden. .

[0002]

2. Description of the Related Art Conventionally, as culvert drainage material, a tubular material such as a perforated pipe or a mesh pipe, or a flat material such as a highly elastic synthetic fiber mesh mat has been used.

[0003]

The drainage material such as the ground is required to collect and drain excess water generated in a short period of time and to maintain the drainage capacity for a long period of time. . In addition, there is a demand for materials that can be constructed in a short period of time due to the labor shortage in recent years.

[0004] In response to such demands, a tubular culvert drainage material such as a perforated pipe or a mesh pipe is used, for example, as shown in FIG. It is necessary to lay a crushed stone 3 and lay a topsoil layer 4 on the surface of the crushed stone 3 and arrange and bury a perforated pipe (or mesh pipe) 5 as a drainage material in the crushed stone 3 layer. Therefore, in order to construct a large area, a plurality of trenches 2 must be excavated.
There is a problem that the construction period becomes longer and the construction cost increases. Further, when used in a field, there is a risk that the crushed stone 3 used as a filter medium is caught in a cultivator or the like and destroys the cultivator or the like.

[0005] Further, a flat culvert drainage material such as a high elasticity synthetic fiber mesh mat or the like may have a shallower groove to be buried than the above-mentioned tubular culvert drainage material. Although more advantageous, as shown in FIG. 8, the structure in which the fibrous material 6 is wrapped in the nonwoven fabric 7 as a filter medium in a three-dimensionally and irregularly entangled state, the thickness direction contributing to the improvement of the pressure resistance. It is difficult to improve only the rigidity of the material, and if a material with a high rigidity and a large fiber diameter is used to obtain pressure resistance, it can be easily cut to the dimensions necessary to make the structure highly rigid in all directions. Not be able to do so, as well as poor horizontal permeability. Moreover, because it is not flexible, it cannot be rolled up.
There has been a problem that a method of joining several meters at the construction site has to be taken, which is troublesome.

The present invention has been made to solve the above-mentioned problems of the prior art, and contributes to the improvement of the pressure resistance.
Wealth Mikatsu higher horizontal direction easily cleavable and flexible while having sufficient pressure resistance by improving the rigidity in the thickness direction only to
An object Rukoto give underdrain collection drainage material having a permeability capability countercurrent.

[0007]

Means for Solving the Problems] In this invention, the problem
As a means for solving the problem, a main feature is to use a cloth-like base material having flexibility, which is sewn with a pile thread made of relatively hard synthetic fiber.

That is, the culvert drainage material according to the basic structure of the present invention is formed on a flexible cloth-like base material having a filtering effect with a fineness of 600 to 7000 denier and a flexural modulus of 9000 to 9000.
A pile yarn made of synthetic fiber of 30,000 Kg / cm ² is sewn, and a large number of loop piles having a height of 3 to 20 mm are formed on the surface side of the cloth-like substrate at intervals of 1 to 10 mm. those, wherein (hereinafter referred to this had been "basic structure").

Further, culverts collecting drainage material of this invention may also be a superposition in the pair to the group <br/> present structure on the inside to each other two the loop pile side (Hereinafter, this is referred to as a first modified example).

[0010] Furthermore, a structure in which two or more of the above pairs are further overlapped may be employed (hereinafter, this is referred to as a second modified example).

In addition to the above basic structure and its modified examples, the set and arrangement thereof can be variously changed according to the use and the place of construction.

[0012]

[Function] The culvert drainage material according to the basic structure of the present invention is:
For example, use it in a place where filter material is not required on the pile surface such as a roof garden where the pile surface of culvert drainage material comes in contact with concrete or other material that is unlikely to collapse, or use a loop pile.
Non-woven, woven or knitted fabric as filter media on the side
For example, as in the ground, etc.
Filter material is required on both sides because both sides come in contact with soil, sand, etc.
It is good to use in the place where all piles
It stands upright at almost the same height and contributes to the improvement of pressure resistance
Runode has improved only stiffness direction, high pressure resistance can be obtained even at a low pile density per unit area, is advantageous over conventional planar underdrain current drain boards in terms of material costs and permeability capacity. Moreover, piles are connected only in the vertical direction on the back side of the cloth-like base material in the horizontal direction, so they can be cut easily compared to the conventional flat culvert drainage material,
Moreover, since it is highly flexible, it can be wound into a roll, so that there is no need to join them together at the construction site.

[0013] The first of the invention, culvert current drain boards according to the second modified example, for example underdrain collection drainage material of the field or the like is relatively deep buried high earth pressure used in such locations.
When the above-mentioned basic structure is constructed in a place with high earth pressure,
In some cases, the loop pile falls down from the base, and a sufficient drainage and drainage effect cannot be obtained. In contrast,
The culvert drainage material according to the first and second modified examples has a structure in which the piles of the two structures face each other alternately and mesh with each other, so that the pile is hard to fall down and very high pressure resistance can be obtained.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. A crimped multifilament made of polyester (polyethylene terephthalate) having a thickness of about 2,000 deniers is used as the warp and the weft, and both warp and weft are produced using a sulzer loom.
A plain fabric 8 having a density of eight was obtained.

Next, as shown in FIGS. 1 and 2, a monofilament yarn made of polypropylene having a true circular cross section and a thickness of about 2,000 denier (flexural modulus of about 15,000 Kg / cm ² ) as a pile yarn, a basic structure 10 having a loop pile 9 having a height of about 10 mm formed at intervals of about 10 pieces per inch in the length direction and about 6 pieces per inch in the width direction. Obtained.

The basic structure 10 is manufactured in the same procedure as that for manufacturing a tufted carpet, using a tufting machine used for manufacturing a tufted carpet having a normal loop pile, for example.

Next, as shown in FIG.
0 is overlapped with the loop pile 9 with the faces of the loop pile 9 inside each other, and the culvert drainage material 1 corresponding to the first modified example described above is obtained.
1 was obtained. When manufacturing the culvert drainage material 11, the width of the cloth-like base material 8 is made wider than the required pile width as shown in FIG. 4 in order to prevent soil and sand from entering the inside from both ends. After superimposition, the ends thereof are, for example, sewing thread 12
It is good to glue or stitch together. The culvert drainage material 11 thus obtained is 10,000 kg / m
^It has a high pressure resistance of about 20% with a strain rate of about 2% when a load of ² is applied, and it has flexibility and can be wound into a roll, and can be easily cut using a cutter knife or the like. can do.

If a plurality of the culvert drainage materials 11 described above are superposed as necessary (corresponding to the second modification described above), for example, as shown in FIG.
The effect is obtained that the collection and drainage capacity is doubled as compared with the culvert drainage material 11.

[0019] Incidentally, if Re bonded loop pile 9 side filter media 13 to the base structure 10 as shown in FIG. 6, such that both surfaces of the culvert current drainage material suitable for construction in place in contact with the soil and sand become.

The cloth-like base material 8 used in the present invention can be woven, knitted, non-woven fabric or any of them unless it is destroyed by sewing with a pile thread or extremely deteriorates in physical properties such as strength. Any of the above-mentioned composites may be used, and if the material is also excellent in corrosion resistance, natural fibers such as coconut fiber and palm fiber, or synthetic fibers such as polypropylene, polyester, polyamide, and the like. The fiber density, thickness, opening ratio, and opening diameter may be selected as appropriate according to the particle size of soil particles in the soil in which the culvert drainage material is used and the required water permeability. it can.

On the other hand, the pile yarn used in the present invention is:
600-7000 denier fineness, 900 flexural modulus
It is preferable to use synthetic fibers such as polypropylene, polyester, and polyamide of 0 to 30,000 Kg / cm ^{2. In order to} reduce the density of the pile yarn, increase the water permeability in the horizontal direction, and maintain high pressure resistance, its cross section is It is preferable to use a monofilament whose shape is not flat. If the fineness is less than 600 denier, a pile must be formed at a high density to maintain pressure resistance, which is disadvantageous in terms of processing cost. Further, if a pile yarn having a fineness exceeding 7000 denier is used, it is difficult to sew it with the cloth-like substrate 8 by a method described later. On the other hand, the flexural modulus is 9000
If a pile yarn of less than Kg / cm ² is used, it is necessary to increase the pile density in order to maintain high pressure resistance, which not only increases the material cost but also impairs the horizontal water permeability. The flexural modulus is 30,000 Kg / cm ²
When pile yarns exceeding the above are used, it is also difficult to sew the fabric with the cloth-like substrate 8 by the method described later.

As an example of a method of sewing the above-mentioned pile yarn with the cloth-like base material 8, there is a method of manufacturing a so-called loop pile tufted carpet. In this manner, a pile yarn is preferably driven from the back surface of the cloth base material 8 to form loop piles 9 having a height of 3 to 20 mm with an interval of 1 to 10 mm. If the height of the loop pile 9 is less than 3 mm, sufficient water permeability in the horizontal direction cannot be obtained, and if it exceeds 20 mm, the loop pile 9 cannot withstand pressure and is deformed, so that it is impossible to efficiently collect and drain water.

The filter medium 13 used in the example shown in FIG.
Nonwoven fabrics, woven fabrics, knitted fabrics, etc. having water permeability can be cited, and the fiber density, thickness, opening ratio, and opening diameter of the soil used for the culvert drainage material and the particle size of the soil particles are required. Can be selected depending on the amount of water permeation. If the material is excellent in corrosion resistance, natural fiber such as coconut fiber and palm fiber, or polypropylene,
It may be a synthetic fiber such as polyester or polyamide or a composite thereof.

[0024]

As described above, according to the invention], a portion which acts as a water passage according to this invention, may be each independently in the horizontal direction, straight
Which is configured by a high pile structure of standing stiffness, improved only rigidity contributing thickness direction to the improvement of the pressure resistance
Can be, apparent density is low, despite having a higher horizontal permeability capability, have a high pressure resistance
And, moreover Ru easily effect the winding take rich Delo Lumpur shape cleavable and flexibility is obtained.

[Brief description of the drawings]

FIG. 1 is an enlarged schematic cross-sectional view of a culvert drainage material as a basic structure of the present invention as viewed from the front.

FIG. 2 is an enlarged schematic cross-sectional view of a culvert drainage material, which is another example of the basic structure of the present invention, as viewed from the side.

FIG. 3 is an enlarged schematic cross-sectional view of a culvert drainage material according to a first modification of the present invention as viewed from the front.

FIG. 4 is an enlarged schematic cross-sectional view of a culvert drainage material of a first modified example of the present invention in which ears are sewn from the front.

FIG. 5 is an enlarged schematic sectional view of a culvert drainage material according to a second modification of the present invention as viewed from the front.

6 is an enlarged schematic sectional view from the front surface further different that underdrain collection drainage material of this invention.

FIG. 7 is a cross-sectional view showing the structure of a culvert drain using a conventional perforated pipe.

FIG. 8 is a perspective view of a conventional flat culvert drainage material.

[Explanation of symbols]

Reference Signs List 8 cloth-like base material 9 loop pile 10 basic structure 11 culvert drainage material

Claims (3)

(57) [Scope of request for utility model registration] 1. A flexible cloth-like base material having a filtering effect, having a fineness of 600 to 7000 deniers and a flexural modulus of 9000 to 9000.
A structure formed by sewing pile yarns made of synthetic fibers of 30,000 Kg / cm ² and forming a large number of loop piles having a height of 3 to 20 mm at an interval of 1 to 10 mm on the surface side of the cloth-like base material. A culvert drainage material characterized by the following. 2. A loop pie comprising two structural bodies according to claim 1.
Underdrain collection drainage material comprising superimposed in the pair so that the inner Le side to each other. 3. A culvert collection and drainage material comprising two or more pairs of the pairs of claim 2 superimposed.