JPH0913377A - Net structure for vegetation - Google Patents

Abstract

PURPOSE: To improve a slope face protection effect by a method in which upper and lower foundation cloths are formed by disposing warp and weft cross each other to provide meshes of such size as not to hinder the vegetation and the upper and lower foundation cloths are alternately connected so as to be disposed parallelly, spaced apart at a predetermined interval. CONSTITUTION: An upper foundation cloth 3 which is constituted of imitation gauze or gauze fabrics prepared by disposing a large number of warps 1 and wefts 2 cross each other to provide stably fixed meshes of such size as not to hinder the vegetation and a lower foundation cloth 4 are provided, and the cloths 3, 4 are interconnected by twisted yarns 5 such as twines in the direction of warps 1 so that the cloths 3, 4 are parallelly disposed, spaced apart at a predetermined interval L. Further interval holding parts 5b are formed so as to be spaced at a predetermined interval A in the direction of warps and a plurality of twines 5 are provided so as to be spaced at predetermined intervals B in the direction of wefts 2 of the cloths 3, 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetation net structure used for vegetation on slopes (slopes), retaining soil, etc.

[0002]

2. Description of the Related Art Conventionally, the above-mentioned vegetation net structure has, for example, a structure shown in FIGS. That is, the conventional vegetation net structure shown in FIG. 7 has upper and lower ground textures 73 formed in a mesh shape having a size that does not inhibit grass growth by intersecting the vertical threads 71 and the horizontal threads 72.
74 is provided, the upper and lower ground textures 73 and 74 are joined by the single woven portion S, and the flat circular space portion 75 is formed between the upper and lower ground textures 73 and 74 by the double woven portion D. This net for vegetation The structure is laid on the slope, and soil (mixed soil) is mixed with the soil, fertilizer, seed bark (barley) or bark compost, grass roots, water, etc. in the space 75 described above. Although it is intended to protect the surface, a space portion 76 having a substantially triangular shape when seen from the side is formed between the slope to be protected and the vegetation net structure. There was a problem that the growth of grass roots became insufficient and it was not possible to protect the slope sufficiently. In addition, since the mixed soil inflow method is limited to the left and right lateral directions, there is a problem that the mixed soil is clogged in the middle of the circular space portion 75 and the mixed soil inflow work efficiency deteriorates. .

On the other hand, in the conventional net structure for vegetation shown in FIG. 8, upper and lower ground textures 83 are formed in a mesh shape having a size that does not inhibit grass growth by intersecting vertical threads 81 and coco threads 82. , 84 are provided, and the single weave section S has upper and lower ground structures 8
3, 84 are joined together, and the double weave section D is used for the upper and lower ground structures 83, 8
A space portion 85 having a substantially semicircular shape is formed between the four, and the above-described vegetation net structure is formed so that the lower ground texture 84 formed in a planar shape (flat shape) is in contact with the slope. Although it is laid on the surface and mixed soil is poured into the above-mentioned space portion 85 to protect the slope, the above-mentioned substantially semicircular space portion 8 is provided.
A space 86 is formed between 5 and 85, which has a substantially inverted triangular shape when viewed from the side.
As a result, the grass stems and leaves in the mixed soil grow insufficiently in this space 86, and there is a problem that sufficient slope protection cannot be achieved. In addition, since the inflow direction of the mixed soil is limited to the lateral direction as in the conventional structure of FIG. 7, the mixed soil is clogged in the middle part of the semicircular space portion 85, and the inflow work of the mixed soil occurs. There was a problem that the efficiency deteriorated. Further, by appropriately processing the left and right ends of the conventional vegetation net structure shown in FIG. 8, it is possible to sequentially flow the mixed soil into the space 85 in a meandering manner. Since the inflow resistance gradually increases as the amount increases, there is a problem that it is difficult to smoothly flow the mixed soil into the entire vegetation net structure that has been engraved on the slope in a short time.

There is also a revetment mat structure in which upper and lower base fabrics made of nylon or polyester are connected to each other by ropes, and concrete or mortar is poured between the base fabrics to construct a revetment. Since the above-mentioned base cloth has no mesh structure, it cannot be used for vegetation.

[0005]

The invention according to claim 1 of the present invention is such that the upper and lower ground textures of the mesh are connected by the connecting means so that they are parallel to each other. It is possible to maintain a constant space between the upper and lower ground tissues, to allow the mixed soil to flow smoothly from the top to the bottom in a short time, and to improve the slope protection effect by achieving sufficient grass growth. An object of the present invention is to provide a net structure for vegetation capable of achieving the following.

According to the second aspect of the present invention, in addition to the object of the first aspect of the invention, the number of weft yarns at the portion where the above-mentioned binding means and the ground structure are connected is increased. An object of the present invention is to provide a vegetation net structure capable of improving the bonding strength of both (bonding means and ground structure) and the strength of the ground structure itself.

According to the invention of claim 3 of the present invention, in addition to the object of the invention of claim 1 or 2, the above-mentioned binding means is arranged in the warp direction and the binding means is oriented. It is an object of the present invention to provide a vegetation net structure that can reinforce the tie strength of the tie means and the strength of the ground texture itself by increasing the number of warp yarns in the area.

According to a fourth aspect of the present invention, in addition to the object of the first aspect of the invention, the above-mentioned binding means is made by twisting a plurality of twines to obtain an appropriate strength. ) Etc., the strength of the structure can be improved by the knotting means itself, and when the vegetation net structure is fixed to the upper part of the slope, so-called heaven, it is reinforced as before. The object is to provide a vegetation net structure that eliminates the need to use ropes or the like.

[0009]

The invention according to claim 1 of the present invention comprises upper and lower ground textures formed in a mesh shape having a size that does not inhibit vegetation by intersecting vertical threads and horizontal threads.
It is a net structure for vegetation, comprising a connecting means for alternately connecting the upper and lower local tissues so that the upper and lower local tissues are parallel to each other with a predetermined interval.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, a vegetation net in which the number of weft threads at the portion where the binding means and the ground texture are joined is increased. It is a structure.

According to a third aspect of the present invention, in addition to the constitution of the first or second aspect of the invention, the binding means is arranged in the warp direction of the ground weave, and the binding means is It is a net structure for vegetation in which the number of warp threads in the oriented portion is increased.

The invention according to a fourth aspect of the present invention is a vegetation net structure in which the binding means is set to a twisted yarn yarn such as Twain in addition to the configuration of the invention according to the first aspect. And

[0013]

According to the invention described in claim 1 of the present invention, the upper and lower ground textures formed in a mesh shape by interlacing the warp yarns and the weft yarns are parallel to each other at a predetermined interval. As described above, since the upper and lower parts and the local organizations are alternately connected by the above-mentioned connecting means, the interval between the upper and lower ground structures can be kept constant by this connecting means, and When the mixed soil flows in after it has been laid, it has the effect of allowing this mixed soil to flow smoothly from the top to the bottom in a short time, and there is no unnecessary space part that hinders the growth of grass. Since it is not formed, there is an effect that it is possible to achieve sufficient growth of grass roots, stems and leaves from the grass roots and seeds mixed in the above-mentioned mixed soil, and to achieve improvement of the slope protection effect. In addition, when the vegetation net structure is stored, the upper and lower ground structures can be brought into contact with each other and folded, so that the vegetation net structure can be stored compactly.

According to the invention of claim 2 of the present invention,
In addition to the effect of the invention described in claim 1, the number of weft yarns at the portion where the above-mentioned binding means and the ground structure are joined is increased to increase the weft yarn density at that portion. There is an effect that the binding strength between the binding means and the ground structure and the strength of the ground structure itself can be enhanced by the above-mentioned weft.

According to the invention of claim 3 of the present invention,
In addition to the effect of the invention described in claim 1 or 2, the above-mentioned binding means is arranged in the warp yarn direction of the ground structure, and the number of warp yarns at the portion where this binding means is oriented is increased, Since the warp yarn density of the portion is increased, there is an effect that the binding strength of the binding means and the strength of the ground structure itself can be reinforced by the warp yarn. Further, as compared with the structure in which the above-mentioned connecting means is arranged in the weft direction, the flow resistance of the mixed soil can be reduced.

According to the invention of claim 4 of the present invention,
In addition to the effect of the invention described in claim 1, since twisted yarns such as twine (twine, a plurality of yarns are made to have an appropriate strength) are used as the binding means, the binding means By itself, there is an effect that the strength of the structure can be improved, and the support strength for supporting the upper and lower ground structures at predetermined intervals can be improved.

In addition, by using the twisted yarn yarn such as the above-mentioned twine, there is an effect that it is not necessary to use a reinforcing rope as in the past when fixing the vegetation net structure to the upper part of the slope, so-called heaven.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawing shows a vegetation net structure. In FIG. 1, this vegetation net structure is made of a woven or entangled fabric in order to form a mesh in which a large number of warp yarns 1 and a plurality of weft yarns 2 are crossed to form a stable fixed mesh. An upper ground structure 3 and a lower ground structure 4 which are formed by weaving and are formed in a mesh shape having a size that does not inhibit vegetation are provided, and these upper and lower local structures 3 and 4 are vertically spaced by a predetermined distance L (however, minimum Twisted yarns such as Twain 5 as a connecting means along the vertical direction 1 direction between the upper and lower tissues 3 and 4 so as to be parallel to each other with a distance of 5 cm).
Desirably, strong ropes are alternately connected.

Here, as the warp yarn 1 and the weft yarn 2 described above, a monofilament of polyethylene, polypropylene, or polyolefine can be used as a synthetic fiber, and hemp or the like when corrosion is required after casting. In this example, the ground weaves 3 and 4 were mock-woven with 1000 denier polypropylene monofila yarn among the above-mentioned various materials. The density of the warp yarn 1 was set to 52.5 yarns / inch, and the density of the weft yarn 2 was set to 22 yarns / inch.

Further, as the above-mentioned Twain 5, it is possible to use a woven yarn made by combining a plurality of nylon threads or polyester threads. In this embodiment, a high-strength nylon Twain 210 denier / 6 × 3 is used. Was used. Also, this twine 5 is each weft thread 2 of the ground textures 3 and 4.
In the upper ground structure 3, the connection part 5a entwined with respect to each other, specifically, from above the weft thread 2 to below the next weft thread 2, and further entangled so as to pass over the next weft thread 2 It has an interval holding part 5b that connects the end of the connecting part 5a and the end of the connecting part 5a in the lower ground structure 4 to secure the above-mentioned predetermined interval L.

Further, the above-mentioned interval holding portions 5b, 5b are formed at a predetermined interval A in the warp yarn direction, and a plurality of tweens are provided at a predetermined interval B in the weft yarn directions of the upper and lower ground fabrics 3, 4. 5 are arranged.

Further, the number of the weft yarns 2 at the end corresponding portion of the joining portion 5a is increased to form the reinforcing portions 6 having a high weft yarn density in the upper and lower tissues 3 and 4, and
The number of warp yarns 1 at the portion where the twines 5 are oriented is increased to form the reinforcing portions 7 having a large warp yarn density in the upper and lower tissues 3, 4. Here, 840 denier × 3 weft high-strength nylon yarns of the transfer part of Twain 5 were used as reinforcing yarns over four.

Although only the double woven portion of the vegetation net structure is shown in FIG. 1, the left and right ends of the vegetation net structure are single-woven to join the upper and lower tissues 3, 4 together. Needless to say, the lower end of the vegetation net structure is cut locally during slope laying, and the cut lower end of the upper ground structure 3 and lower end of the lower ground structure 4 are joined to each other and mixed. It is constructed so that soil does not run out.

The illustrated embodiment is configured as described above, and the operation will be described below. In order to perform slope protection using the vegetation net structure described above, first, as shown in FIG. 2, the vegetation net structure is laid on the slope, and then the upper ground structure 3 and the lower ground structure 4 are combined. Double weave, that is, from the portion where the three and four are not joined and the opening corresponding to the predetermined interval L is provided, the soil, fertilizer, seeds, bark or bark compost, grass roots, water, etc. Pour the mixed soil C (mixed soil).

The above-mentioned mixed soil C runs along the slope gradient of the slope between the upper and lower ground textures 3 and 4 held at the predetermined distance L by the distance holding portion 5b of the twine 5 as shown by the arrow in FIG. Flows smoothly from the top to the bottom. After a certain number of days have passed after the completion of such enforcement, the seeds and grass roots contained in the mixed soil described above are changed to grass roots as shown in FIG.
The stems and leaves grow from the mesh parts of the upper and lower tissues 3 and 4 to complete the vegetation.

In this way, the upper and lower ground textures 3 and 4 formed in a mesh shape by interlacing the warp yarns 1 and the weft yarns 2 are parallel to each other at a predetermined interval L. The above-mentioned connecting means between the organizations 3 and 4 (see Twain 5)
Since they are alternately connected with each other, this connecting means can keep the interval L between the upper and lower ground textures 3.4 constant, and when the mixed soil C flows in after the laying on the slope. , There is an effect that this mixed soil C can flow smoothly from above to the lower side in a short time, and since an unnecessary space part that hinders the growth of grass is not formed, It is possible to achieve sufficient growth of grass roots, stems and leaves from the grass roots and seeds mixed in the above, and to achieve improvement of the slope protection effect. In addition, when the vegetation net structure is stored, the upper and lower ground tissues 3 and 4 can be brought into contact with each other and folded, so that the vegetation net structure can be stored compactly.

In addition, the number of the weft threads 2 at the portion where the above-mentioned binding means (see Twain 5) and the ground tissues 3 and 4 are joined (in this embodiment, the portion corresponding to the end of the joining portion 5a). By increasing the weft density of the region by increasing the weft density of the portion, the binding strength between the binding means (see Twain 5) and the ground textures 3 and 4 and the strength of the ground textures 3 and 4 themselves are set to the above-mentioned wefts. There is an effect that can be enhanced by the thread 2.

The above-mentioned connecting means (see Twain 5)
Are arranged in the warp yarn directions of the ground textures 3 and 4, and the number of warp yarns 1 at the portion where the knotting means is oriented is increased to increase the warp yarn density at the portion. There is an effect that the binding strength of the means (see Twain 5) and the strength of the ground textures 3 and 4 themselves can be reinforced by the warp yarn 1. Further, as compared with the structure in which the above-mentioned connecting means is arranged in the weft direction, the flow resistance of the mixed soil C can be reduced.

Further, as the above-mentioned connecting means, Twain 5
(Twine, which is obtained by twisting a plurality of yarns to have an appropriate strength), the strength of the structure by the knotting means itself and, in particular, the supporting strength for supporting the upper and lower ground textures 3 and 4 at a predetermined interval L There is an effect that can be improved. Furthermore, by using the above-mentioned Twain 5, when fixing the vegetation net structure to the upper part of the slope, so-called heaven, there is an effect that it is not necessary to use a reinforcing rope or the like as before.

FIG. 4 shows another embodiment of the vegetation net structure. In the previous embodiment shown in FIG. 1, two adjacent spacing members 5b, 5b of the twine 5 are arranged in parallel with each other. However, in the embodiment shown in FIG. 4, the two spacing members 5b, 5b of the twine 5 are arranged so as to intersect each other in an X shape when viewed from the side. Even with such a configuration, substantially the same operation and effect as those of the previous embodiment can be obtained. Therefore, in FIG.

FIG. 5 shows still another embodiment of the vegetation net structure. In each of the previous embodiments shown in FIGS. 1 and 4, the length of the connecting portion 5a of the twine 5 is approximately a predetermined interval A. Although the lengths of the joints 5a in the twine 5 are set to be relatively short in the embodiment shown in FIG. 5, the ends of the joints 5a in the upper ground structure 3 and the lower ground are set. Top and bottom formed by arranging two interval holding parts 5b, 5b that connect the ends of the connecting part 5a in the tissue 4 so as to intersect in an X shape when viewed from the side and with a predetermined interval E therebetween. 5 in each organization 3 and 4
The number of the weft yarns 2 is increased only in the area where a is arranged, and the reinforcing portion 6 having a high weft yarn density is formed. Here, the connecting portion 5a of the above-mentioned Twain 5 has the upper and lower ground textures 3,
No. 4 yarn is entangled and the twine structure of the joint 5a prevents the twine 5 from being displaced. The above-mentioned predetermined interval L, so-called height, is set by a trigonometric function from the lengths of the interval holding parts 5b, 5b as floating weave parts. Even if configured in this way, the same operation and effect as those of the above-described respective embodiments can be obtained. Therefore, in FIG.

FIG. 6 shows still another embodiment of the vegetation net structure. In this embodiment, the length of the connecting portion 5a of the twine 5 is slightly longer than that of the previous embodiment shown in FIG. In addition to the setting, the width of the reinforcing portion 6 having a large weft yarn density is similarly set to be slightly longer.

Even with this construction, the same operation and effect as the previous embodiment shown in FIG. 5 can be obtained. Therefore, in FIG. 6, the same parts as in FIG. The description is omitted.

In the correspondence between the constitution of the present invention and the above-mentioned embodiment, the warp yarn and the weft yarn of the present invention are the warp yarn 1 and the weft yarn 2 which are the polypropylene monofilaments of the embodiment.
Similarly, the upper and lower ground weaves correspond to the upper ground weave 3 and the lower ground weave 4 which are configured in the imitation weave and the leno weave, and the binding means is the nylon or polyester twain 5 However, the present invention is not limited to the configuration of the above-described embodiment.

The thicknesses of the warp yarn 1, the weft yarn 2 and the twine 5 used may be appropriately selected according to the required strength. Furthermore, the predetermined interval A shown in each of the above embodiments,
B and E are preferably about 5 cm. Furthermore, when corrosion is required after casting, it is recommended to use natural fibers, such as hemp, which are hard to stretch and strong, in the warp and weft.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing a vegetation net structure of the present invention.

FIG. 2 is an explanatory view when performing slope protection using the vegetation net structure of the present invention.

FIG. 3 is an explanatory diagram when the vegetation is completed.

FIG. 4 is a perspective view of an essential part showing another embodiment of the vegetation net structure of the present invention.

FIG. 5 is a perspective view of a main part showing still another embodiment of the vegetation net structure of the present invention.

FIG. 6 is a perspective view of an essential part showing still another embodiment of the vegetation net structure of the present invention.

FIG. 7 is a schematic explanatory view showing a conventional vegetation net structure.

FIG. 8 is a schematic explanatory view showing another example of a conventional vegetation net structure.

[Explanation of symbols]

 1 ... Warp yarn 2 ... Weft yarn 3 ... Upper ground texture 4 ... Lower ground texture 5 ... Twain (twisted yarn) L ... Predetermined interval

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hisami Fujii 95-4 Ryofukuji Temple, Kashiba City, Nara Prefecture

Claims (4)

[Claims] 1. The upper and lower ground tissues formed in a mesh shape having a size not interfering with vegetation by crossing the warp yarns and the weft yarns and the above and below each local tissues are parallel to each other with a predetermined interval. As described above, a net structure for vegetation having a connecting means for alternately connecting the upper and lower tissues. 2. The vegetation net structure according to claim 1, wherein the number of weft yarns at the portion where the binding means and the ground structure are joined is increased. 3. The vegetation net structure according to claim 1, wherein the binding means is arranged in the warp direction of the ground structure, and the number of warp threads in the portion where the binding means is oriented is increased. 4. The vegetation net structure according to claim 1, wherein the binding means is set to a twisted yarn such as Twain.