JPS61179338A - Cloth bag - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cloth bag for civil engineering work. More specifically, it can be used to protect slopes such as rock banks, earthen slopes, or to green slopes by filling fluid materials such as concrete, earth and sand, and vegetation materials.
This invention relates to a cloth bag body.

BACKGROUND OF THE INVENTION Until now, fabric bags made of a double-woven fabric in which upper and lower two layers of fabric are partially connected have been put into practical use as fabric board frames for slope protection or slope greening.

The above-mentioned cloth bag is spread out at the installation site and filled with fluid materials such as concrete, earth and sand, and vegetation material between the upper and lower fabrics.
Compared to conventional cast-in-place concrete, concrete cladding, or planting methods, it is possible to protect slopes, green vegetation, etc. by forming concrete or adding soil.
It is effective in terms of speed of construction, safety, labor saving, economic efficiency, etc.

As shown in FIGS. 1 and 2, for example, such a conventional cloth bag body consists of an upper layer fabric 1 and a lower layer fabric 2, and the upper and lower layer fabrics 1 and 2 are connected together at a predetermined position. It has part 3. In this bag, since the elongation of the upper and lower fabrics 1.2 is the same and low, when a fluid material 5 such as concrete, earth and sand, or vegetation material is press-fitted into the gap 4 between the fabrics 1 and 2, the fabric 1. 2 is curved almost symmetrically in the vertical direction around the connecting portion 3, and the horizontal dimension is substantially reduced, reducing the covered area. Therefore, since the area of the construction site and the area of the bag are different, it is necessary to decide the area of the bag according to the construction site.
In addition, during construction, in order to achieve uniform filling (constant thickness), it is necessary to uniformly shrink the bag by a hanging method.

In addition, in order to prevent the generation of gaps between the mats and the soil that are adjacent to each other in the width direction, a so-called bonding process is used in which the mats are overlapped with each other by a predetermined width in advance, or the mats are pulled together simultaneously with filling with a fluid.

In addition, the lower surface of the molded product after construction will be uneven, resulting in poor adhesion to the ground, resulting in reduced slope protection from spring water, rainwater, etc., and poor installation stability on steep slopes. There are drawbacks. In terms of vegetation, there are problems with plants withering due to poor rooting in the ground and insufficient water supply.

In order to solve these problems, a bag body is known in which a low elongation yarn is used on the lower layer fabric side and a high elongation crimped yarn is used on the upper layer fabric side, and these are integrated by weaving. This crimped yarn has high elongation under extremely low loads, and has an extremely high elongation recovery rate, so the yarn is greatly elongated by the tension during weaving preparation and weaving, and the yarn recovers after weaving. . On the other hand, the yarns on the lower layer fabric show little change in elongation. Therefore, such a bag has extremely poor weaving preparation and weaving properties, and at the same time, the upper layer fabric of the woven bag is in a shrunken state9, and the area is substantially smaller than the upper layer fabric, and the upper and lower connecting parts are Due to the difference between I and India, a satisfactory bag and molded product cannot be obtained.

Problems to be Solved by the Invention The inventor of the present invention has found that the dimensions of the bag do not change before and after filling the bag with fluid materials such as concrete, earth and sand, and vegetation material, and the adhesion to the surface of the laying ground is maintained. The present invention has been completed as a result of extensive research in order to provide a fabric bag that is excellent in fabric bag production and construction.

Means for Solving the Problems The present invention provides a bag in which a fluid is press-filled between fabrics of a multilayer structure, and in which lower layers (1) to (
Cloth bag (1) characterized by using a special highly elongated yarn that satisfies the conditions of load, elongation, and elongation recovery rate shown in 3) When the load (F1) is 0.2 to 22/d Elongation (E1) 615% (2) Load (F,) 0.2~2P
/d(F,≦4 Elongation (H,) when f/d is 25~1
00% (3) Elongation recovery rate (6) when load (F1) > 4 f/d is 5 to 70%.

The bag used in the present invention is a bag that has a multilayer structure in which multiple layers of fabric are partially connected above and below, and can be filled with water-miscible fluid materials such as concrete, earth and sand, and vegetation base material. hand,
Although not particularly limited, typically, at least a plurality of layers of fabric are closed at the periphery and the layers are partially connected, and an inlet for filling the water-miscible fluid is provided. It is provided.

The structure of the bag is one that has two or more layers in its entirety or in parts, and the connection method is one in which the layers are connected partially in close contact or with a gap maintained, or a combination of both. The surfaces of the connected molded products have a flat or uneven shape.

In addition, the fabrics to be used include woven fabrics, knitted fabrics, non-woven fabrics, etc., and each can be used alone or in combination, but woven fabrics and knitted fabrics are suitable from the viewpoint of manufacturing and performance of the bag. It is preferable that the bag is integrated by a weaving or knitting machine.

An important configuration of the present invention is that part or all of the bag fabric uses a specific special high elongation yarn11, and the special high elongation yarn is formed by the filling load or pressurized filling pressure of the water-miscible fluid. By easily increasing the elongation to a high degree, molded products with desired shapes and shapes can be easily formed. This special high elongation yarn is preferably used in a part of the bag fabric, and the other parts are made of low elongation yarn, from the viewpoint of workability, form of molded product, shape, etc.

Hereinafter, the configuration of the present invention will be explained in more detail with reference to the drawings.

FIG. 3 is a load-elongation characteristic diagram of the yarn used in the bag of the present invention, where 11 indicates a special high elongation yarn and 12 indicates a low elongation yarn. 4, 9, and 14 show plan views of the bag of the present invention,
Figures 5 to 8, Figures 10 to 13, and Figures 15 to 18 are
9 and 14, and a cross-sectional view after filling the bag with a water-miscible fluid.

As shown in FIGS. 4 to 18, the present invention is a bag that is woven into two upper and lower layers, and which partially has a connection part 3 in which the upper and lower layer fabrics 1.2 are connected by reinforcing threads 13. is the body,
The bag fabric 1.2 is constructed such that a part thereof has a special high elongation property and the other part has a low elongation property. Furthermore, the special high elongation yarn 11 is used in the special high elongation portion, and the low elongation yarn 12 is used in the low elongation portion, and these are interwoven and integrated to form a nine-bag body. The purpose of the present invention cannot be achieved if this bag structure uses only low elongation yarn or a combination of low elongation yarn and ordinary textured yarn.

In the present invention, a processed yarn as shown in FIG. 3 is used as the special high elongation yarn 11. That is, in Fig. 3, a and b are model diagrams showing load-extension characteristics, a' and b' are model diagrams showing elongation recovery characteristics, and low elongation (Es) in the low load region (F1). t', high elongation (Ex) k in the medium load region (F), and the elongation recovery characteristic in the high load region (Fs) has incomplete recovery (6), and the characteristic range is satisfies the following conditions.

(1) Load (F1) 0.2-2 S'/d Elongation (E1) 615% (2) Load (F2) 0.2-29/
d (F, ≦4 P/d, straightness (E) 25-10
0% (3) Load (Fs)>4 r7'd (Elongation recovery rate (H) at D) 5 to 70% In other words, the above (1) applies to yarn handling (preparatory stage before weaving/knitting) and weaving.・In order to prevent the yarn from elongating or deforming due to yarn tension during knitting, and from deforming when handling the bag after weaving and knitting, the straightness E1 at the time of initial load p = 0.2 to 22/d is set to 15. % or less.In this range, textiles and
After knitting, the bag has the same dimensions for the upper and lower layers. If Et>ts% or more, the yarn deformation is large (not preferable because it is almost the same as using conventional crimped yarn).

Item (2) refers to the fact that, like filling a bag with a fluid, the filling load or pressurized filling pressure of the fluid causes the fabric to be highly elongated into the container, improving soil adhesion, or causing the bag before and after construction. In order to reduce the dimensional change of the body, load (F,) 0
．． 2~2f/d (F, elongation am when ≦4?/d is 2
5 to 100%, preferably 35 to 70%. Elongation (
IM)<25%, the purpose of the present invention cannot be achieved. If the elongation (E2) is greater than too%, the elongation is too high, which causes deformation of the molded product and requires a large amount of fluid, which is not preferable.

(3) In order to control the shape, thickness, etc. of the molded product,
In addition, the elongation recovery rate when the load (Fs) > 4t/d is adjusted to tighten the fluid and drain excess water in order to promote solidification of the fluid in the molded product, and to integrate the filling and dough. 5 to 70%, preferably 20 to 50%. If the elongation recovery rate is 5% or less, the above effects cannot be sufficiently obtained,
Further, if the elongation recovery rate is 70% or more, the high elongation portion described in item (2) above cannot be sufficiently obtained.

Such a special high elongation yarn 11 is made by using an extremely low tenacity yarn, an undrawn yarn, or a semi-undrawn yarn as a core yarn, and using a low elongation high tenacity yarn as a curly or filament yarn. Length ratio 1:
There are 1.2 to 2.0 kaka ring yarn, twisted yarn, and jet processed yarn. There is also a resin-processed yarn in which ordinary crimped yarn is crimped and fixed with a synthetic resin or the like. This special high elongation thread 1
1 shows the elongation E under load F1 due to the core thread or resin, then shows the load fusk, and then shows the recovery H under load F3 for those curly threads or filaments or crimped threads. It is.

Further, the low elongation yarn 12 used in the present invention refers to one having a tensile elongation at break of 25% or less, and a general drawn yarn is used, but a high tenacity yarn is preferably used.

The fineness of this special high elongation yarn 11 and low elongation yarn 12 is 200.
~4000 denier, preferably soo~2000 denier. If it is less than 200 denier, the yarn strength will be low and the bag will lack pressure resistance. If it is more than 4000' denier, the yarn density decreases and the stitches are likely to be misaligned, and the weight of the bag becomes too large, making it difficult to handle.

The fibers used include natural fibers such as cotton, linen, and wool, inorganic fibers such as metal, glass, and carbon, synthetic fibers such as cellulose and tanosene, cellulose, polyamide, polyester, polyolefin, polystyrene, polyvinyl chloride, There are synthetic fibers such as polyvinylidene chloride, polyacrylic, and polyvinyl alcohol, which can be used alone or in combination.
It is not limited to %.

The structure of the bag of the present invention is such that the special high elongation yarn 11 is used only in the warp and weft of the other fabric, used in both directions, or used also in the warp and weft of the other fabric, or only in a certain part of the fabric. The other parts can be constructed by using the low elongation yarn 12, so there is no particular limitation.
It may be selected as appropriate depending on the purpose of use of the bag, the content of use or construction, the site situation, etc. From the viewpoint of ground adhesion, workability such as prevention of bag shrinkage, and post-construction management, the special high elongation yarn 11 is used only in the warp, weft, or one direction of the other fabric, and the low elongation yarn 12 is used in other parts. It is preferable to consist of

As mentioned above, the bag body woven and knitted using the special high elongation yarn 11 and the low elongation yarn 12 can sufficiently withstand the tension (load) during yarn handling, backing paper, and knitting, and can achieve high elongation. Therefore, a bag without distortion or deformation can be obtained, and the fabric properties of the bag have a special high elongation part and a low elongation part that maintain the initial yarn properties. can get.

Since this bag does not elongate to a high degree unless subjected to high tension (load F2 or more), it is likely to be deformed during general handling and handling during construction.

When fluid materials such as water-mixed concrete, earth and sand, and vegetation materials are press-fitted into this bag, the special high elongation portion is formed during initial filling (mostly under pressure) due to the effect of the special high elongation thread 11. In the state where the fluid is not loaded (within the load Fl), the fluid substance 5 is filled with almost no elongation, but when it is further filled and pressurized (load 21 or more), it quickly elongates to a high degree and the horizontal dimension is almost the same. It bulges out vertically while being maintained for a long time, making it thicker.

At the same time, dehydration of excess water begins. Even higher pressure (load F.

If the above steps are performed, the fluid inside the bag is tightened with almost no elongation and the thickness is maintained, and the dehydration of excess water is activated. After further pressurization (load of 23 or more, but not enough to cause breakage), by finishing the press-filling, the yarn elongation stops and the yarn recoverability (6) effect is achieved.
The dehydration of excess water is further promoted, and the compaction of the filling and the adhesion (or adhesion) between the filling and the fabric are improved.

On the other hand, due to the effect of the low elongation yarn 12, the low elongation part hardly elongates even if it is filled with a fluid under high pressure (a load of 23 or more, but the load does not lead to breakage), and the initial The fabric dimensions are kept wide, and a flat surface is formed.

Therefore, the shape of the fluid after press-filling is such that the low elongation part forms a flat surface with almost no dimensional change, while the high elongation part has a shape that bulges in the vertical direction with a large dimensional change. Since the concrete body or the base layer of earth and sand, vegetation material, etc. is formed by increasing the thickness, it is possible to obtain a bag with substantially less dimensional change (or shrinkage) and excellent soil adhesion.

This is a book that shows examples. The bag of the invention will be further explained.

FIG. 4 shows B, -B1. in FIGS. 5 and 7. As shown in the B snow-B snow cross section, predetermined vertical and horizontal intervals B1. n4) It is a bag 1G with a two-layer structure, using g reinforcing threads 13, and having connecting portions 3 partially integrated with 1.2 g of upper and lower layer fabrics. In this bag 10, the lower layer fabric 2 is made of low elongation yarn 12 in both warp and weft.
The upper layer fabric 1 is integrally woven with special highly elongated yarns 11 in both warp and weft. The upper layer of this bag lO
The width and length dimensions (ixej''x) of the lower layer fabric 2 and the lower layer fabric 2 are almost the same, and the initial yarn properties are largely maintained.The fluid material 5 is press-fitted into the bag body 4. When filled,
The lower layer fabric 2 using the low elongation yarn IX has almost no dimensional change, while the upper layer fabric l using the special high elongation yarn 12,
Due to the filling pressure of the fluid 5, it becomes highly elongated and swells in the thickness direction (vertically upward direction) and is filled with the fluid 5, so that the lower layer side of the molded product is forms a flat surface, the upper layer side forms a molded layer of a certain thickness, and the dimensional change is 21 + 1' of the bag 10 before filling with the fluid 5.
You can get something almost different from l.

Also, FIG. 9 shows cl-ol in FIGS. 10 and 12.

As shown in the 0 and -02 cross sections, the two-layer fabric has connecting portions 3 that partially integrate the upper and lower layer fabrics 1 and 2 using reinforcing threads 13 along the width direction at predetermined intervals in the length direction. Structure bag 1
It is 0. This bag body 10 is constructed by integrally weaving low elongation yarns 12 in the warp and weft of the lower layer fabric 2 and the warp of the upper layer fabric l, and special high elongation yarns 11 in the weft of the upper layer fabric 1. ,
Figures 11 and 13 show cross-sections of the molded product in which the fluid 5'i is press-fitted into the bag 4, and the effects of these are as follows:
Something similar can be obtained as shown in the previous example.

In addition, DI DIeD,
-D, as shown in the cross section, a connecting portion 3 in which the upper and lower layer fabrics 1.2 are partially integrated using reinforcing threads 13 and the periphery is closed.
The bag body 10 has a two-layer structure, and has a cylindrical portion 6 and individual bag portions 7 that communicate in a lattice-like manner.

(The bag portion 7 is partially provided with a connecting portion 3' to hold the space between the upper and lower layer cloths 1 and 2.) This bag 1° is made of special high elongation yarn 11 in both warp and weft for the bag portion 7 of the lower layer cloth 2, and low elongation yarn for the other portions, that is, the cylindrical portion 6 of the lower layer cloth 2, the warp of the upper layer cloth, and pure gold. 12 pieces are integrated into a woven structure. This bag 1o can be obtained in which the upper layer fabric 1 and the lower layer fabric 2 have almost no difference in width and length, and the initial yarn physical properties li' are maintained. When the fluid 5 is press-fitted into the cylindrical part 4 and the bag part 4' of this bag body 10, FIG.
As shown in Fig. 8, the lower layer cloth 2 of the bag portion 7 using the special high elongation yarn 11 is highly elongated and swells in the thickness direction (vertically downward direction) and is filled with the fluid 5, so that the ground 15 On the other hand, since the upper layer cloth 2 uses the low elongation yarn 12, there is almost no dimensional change, and a molded article layer having a flat surface can be formed. .

Note that the composition of the fabrics 1 and 2 used in the fabric bag 10 of the present invention, such as yarn type, structure, density, etc., is not particularly limited, but may include press-fitting of a fluid material 5 such as concrete, earth and sand, or vegetation material. Something that has the strength to withstand the filling pressure and weight of the filling,
Alternatively, it must be strong enough to withstand wear and snags on the ground 15 during construction, have good drainage of excess water, and for vegetation greening, must have good plant germination and growth. must not. Therefore, the strength of the fabric 1.2 is 50 kg/in or more, and the strength of the connecting parts 3, 3' is 70 Jrf/in or more, and the strength of the fabric 1,
0 of 2 is 0. 01 to 4 wam" are suitable for this purpose.Furthermore, in order to improve abrasion strength, improve appearance, or improve other functionality, resin processing, coloring processing, etc. may be applied. May be used.

The cloth bag 10 of the present invention has a width of 1 to 10 m and a length of 3 m, using two or more layers of woven or knitted cloth alone or in combination with a ground cloth.
It shall be ~5 orm in size, the periphery shall be closed by sewing, gluing, etc., and there shall be a single number in the width and length directions.

In constructing the cloth bag 10 of the present invention, the bag 10 is laid on the slope ground 15, stretched with chain blocks, etc., and then the fluid 5 is press-fitted and anchored. Preferably, the bag 10 is fixed on the slope ground 1.
5, and after fixing the anchor, the fluid 5 is press-fitted and filled. In addition, in the latter construction, when the fluid material 5 is press-fitted and filled, the bag body 10 may be pulled downward due to the filling pressure and filling load, causing deformation or damage at a part of the anchor. At a predetermined interval in the length direction of the bag body 10, preferably 2 to sm'l, a rigid material is inserted and fixed through part or all of the bag body 10 in the width direction to prevent deformation or damage, or a large number of rigid materials are inserted and fixed through a part or all of the bag body 10. It is preferable to fix it with an anchor.

The fluid material to be filled into the cloth bag of the present invention may be concrete, earth, sand, vegetation, etc. mixed with water, either alone as shown in FIGS. 4 and 9 or as shown in FIG. 14. Although these bags 10 can be used in combination as shown in FIG.

Concrete to be filled into these bags 10 includes fluid mortar and fluid concrete. Fluid mortar is a mortar with a slightly higher water content than ordinary cement milk, and is made by mixing cement gravel with water in an appropriate ratio, and there are no particular restrictions on the mixing method. From the later mortar strength aspect, cement:gravel=1=
1 to 4 is preferable, and the water/cement ratio is set to 45 to 80% from the viewpoint of fluidity, that is, the ability to fill the mat.
It is preferable to use one having a flow value of 10 to 30 seconds by funnel method. Fluid concrete is mixed almost in the same way as the fluid mortar, but in order to further improve the strength, coarse aggregate with a maximum size of 50 mm or less is mixed into the mix. The mixing amount is based on concrete strength, concrete fluidity, cement: coarse aggregate = 1:
0.5 to 4, and the slump value of this formulation is 15 to 4.
2851 is preferred. In some cases, a fluidizing agent may be added to further improve fluidity, inorganic or organic short fibers may be added to further strengthen the product, or coarse aggregate, short fibers, etc. may be added to improve the mixability. In addition, a separation preventing agent (or dispersing agent) or the like may be added.

In addition, the earth and sand to be filled into these bags 10 is one obtained by kneading earth or sand with water in an appropriate ratio, and there are no particular restrictions on the mixing method, etc. In terms of fluidity, etc., the ratio of water to soil is 2.
It is preferable to set it as 0-70%, and the earth and sand used are
In order to improve crosstalk, fluidity, pumping performance, etc., the material is sieved to remove large impurities such as roots of plants, coarse aggregate with a maximum dimension of 50 or more, and other impurities. preferable. In some cases, it is preferable to add a fluidizing agent to the page to improve fluidity, a dispersant to improve dispersibility, an adhesive, a thickener, etc. to improve viscosity.

The vegetation material to be filled in these bags 10 is a mixture of the above-mentioned fluid soil and seeds, fertilizers, etc., and is a usual vegetation base material for spraying, with no particular restrictions on the content, formulation, etc. However, the coffee to be used should be selected appropriately depending on the climate, soil, etc., and it is preferable to use a large mixture of plants and plants in order to promote early germination, vegetation growth, and soil reinforcement. The ratio is preferably 5,001 or more per 3 parts of the total admixable material for germination and vegetation. In addition, the fertilizer to be used is selected depending on the soil quality, but in addition to regular fertilizers, fast-release and slow-release fertilizers may also be used to improve initial germination, growth, and long-term vegetation. It is preferable to use The amount of fertilizer mixed depends on the soil quality, but it is generally preferable to mix 50 # or more of fertilizer per 1 wt of total mixed materials.In some cases, a water retaining material may be added to maintain water retention over a long period of time. Addition of fluidizers, thickeners, etc. to prevent separation of admixtures, improve fluidity, or natural paid substances, chemical agents, soil conditioners, etc. to improve soil hardness, soil pH, etc. may be mixed.

EXAMPLES The present invention will be explained below using examples. Table 1 shows the performance of the special high elongation yarn and low elongation yarn used in the present invention.

The fabrics used in the examples were all plain weave structures, and the number of threads in the warp and weft was 44 x 44 threads/In. In addition, all joint reinforcements of the upper and lower layer fabrics are NY 1260
It is made of d-thread.

Margin Example 1 The warp and weft of the upper layer fabric are made of special high elongation yarn 11, which is a covering yarn shown in 1 of Table 1, and the warp and weft of the lower layer fabric are both of the yarn shown in 4 of Table 1. Low elongation yarn 12f,
As shown in Figures 4 to 6, vertical and horizontal 20a
A bag is created by weaving it into a two-layer structure with 3t connecting parts (3t) in which the upper and lower layers are in close contact with each other at lattice-like positions spaced apart from each other (2m with a closed circumference).
It was installed on a slope with an inclination of 40 degrees, and fluid concrete was press-filled. Table 2 and FIG. 9 show the paper-making properties, fabric properties, construction properties, and condition after construction of this bag.

Example 2 The weft of the upper layer fabric is a special high elongation yarn 11i of the resin-treated yarn shown in 43 in Table 1, and the warp and weft of the lower layer fabric are the low elongation yarn 12 of the yarn shown in 44 of Table 1. using,
As shown in FIGS. 7 to 9, the upper and lower layers have connecting portions 3 that are in close contact with each other in the form of parallel strips spaced apart at a predetermined interval along the weft, but the central portion of the two layers has an irregularly shaped communicating portion that is not connected. A bag was made by weaving it into a structure (2 m x 5 m long with a closed circumference and an injection port installed at the top). This bag was installed on a slope with an inclination of 40 degrees, and fluid vegetation material (mixed with soil, fertilizer, seeds, etc.) was press-fitted into the bag. Table 2 and FIG. 9 show the weavability, fabric characteristics, workability, and condition after construction of this bag.

Example 3 A cylindrical part is formed around the periphery in a lattice shape, the inside of the lattice frame is isolated from the cylindrical part, and the upper and lower layer fabrics partially maintain an interval to form a bag part to which liquid is supplied. The bag shown in Figure 12 is used, and the warp and weft of the upper layer fabric are drawn low elongation yarn 1 shown in JI64 in Table 1.
2f, used, the lower fabric was made of high elongation yarn 11 of the jetted yarn shown in Table 1, M2 in the warp and weft only for the bag part in the lattice frame, and the material shown in A4 in Table 1 for the other cylindrical part. A bag was created by weaving it into a two-layer structure using low elongation thread 12 (4mx
It was 6 m long with an injection port installed in the cylinder part and each bag part).

This bag was laid on a slope with an inclination of 40 degrees, and the cylindrical part was filled with fluid comfleet. Each bag part was press-filled with fluid vegetation material (a mixture of soil, fertilizer, shiitake, etc.). Table 2 and FIG. 12 show the weavability, fabric characteristics, workability, and condition after construction of this bag.

Comparative Example 1 As shown in Figure 1, a bag having the same structure as Example 1 was
Weaving and construction were carried out in the same manner using only the low elongation yarn 12 of the scraps and yarns shown in No. 4. Table 2 and FIG. 2 show the weavability, fabric properties, construction properties, and condition after construction of this bag.

Comparative Example 2 A bag with the same structure as Example 1 was replaced with 11t of special high elongation yarn made of covering yarn shown in A1 of Table 1 - high elongation yarn of crimped yarn shown in M5 of Table 1, and the same was applied. It was woven and constructed. The paper-making properties, fabric properties, construction properties, and condition after construction of this bag are shown in Table 2.

Margin below Effect of the invention The cloth bag of the present invention has the following remarkable effects.

(1) The bag is easy to manufacture, has no deformation or distortion, and is easy to handle.

(2) The fluid material can be press-filled smoothly, and a concrete molded product or a base layer of earth and sand, vegetation material, etc. can be created with a uniform thickness.

(3) Since there is no dimensional change (i.e., shrinkage) of the bag before and after filling with the fluid, bag design and construction are facilitated.

(4) A pasting construction method (construction in which the bag is fixed to the slope in advance) is possible, and construction efficiency is improved.

(5) Perfect adhesion to the ground, improving the slope protection effect.

(6) In addition, installation stability is improved, and construction on steep slopes is also possible.

(7) In terms of vegetation, the ability of plants to take root in the ground is improved, and the growth of plants is also improved due to easy water supply.

[Brief explanation of drawings]

Figures 1 and 2 show a conventional double-woven fabric bag (1), Figure 1 is a plan view, and Figure 2 is a cross section of the fabric bag shown in Figure 1 after being filled with concrete. Show the diagram. FIG. 3 is a model diagram showing the load-elongation characteristics of the special high elongation yarn used in the cloth bag of the present invention. 4 to 18 show an example of the fabric bag structure of the present invention, and FIGS. 4, 9, and 14 are plan views of the bag, and FIGS.
FIGS. 8, 10 to 13, and 15 to 18 show cross-sectional views before and after filling each bag with a fluid. l... Upper layer fabric, 2... Lower layer fabric 2). 3'...
Connecting part, 4.4'...Void, 5...Fluid material such as concrete or earth and sand, or vegetation material, 6...Cylindrical part, 7.
...Bag portion, 10...Bag body, 11.-Special high elongation thread, 1
2...Low elongation yarn, 13...Reinforcement yarn, 15...Ground patent applicant Asahi Kasei Industries, Ltd.Figure 1Figure 2Figure 3-Figure 4n Figure 5Figure 6 7 Figure 8 Figure 9 LC2LCl 12th! ! 1 Figure 13 "it p +5t1 Figure 161!1 Figure 17 Proceedings Amendment (spontaneous) December 17, 1985 Mr. Michibu Uga, Commissioner of the Patent Office, Indication of Case 1985 Patent Application No. 16609 No. 2, Name of the invention: Cloth bag, Person making the amendment Relationship to the case: Patent applicant 1-2-6 Dojimahama, Kita-ku, Osaka-shi, Osaka Prefecture, "Detailed description of the invention" in the specification to be amended more than column

Claims (1)

[Claims] In a bag in which a fluid is press-filled between fabrics of a multilayer structure, a part or all of the fabric is subjected to the load, elongation, and elongation recovery rate shown in (1) to (3) below. (1) Elongation when load (F_1) is 0.2 to 2 g/d (
E_1)≦15% (2) Load (F_2) 0.2-2g/d<F_2≦4g
/d elongation (E_2) 25-100% (3) Elongation recovery rate when load (F_3) > 4 g/d (
H) 5-70%