KR101136473B1 - Method for Manufacturing the Geotextile Tube without Sewing Line - Google Patents

Abstract

The present invention relates to a geotextile tube that is blocked at both ends and there is no seam, and to a method of manufacturing the same, in particular, weaving at the same time forming the weft direction connection and the inclination connection to form a cylindrical geotextile tube without a separate sewing process And a cylindrical geotextile tube. The present invention is a two-ply fabric part consisting of two fabrics separated from each other, the weft direction connection portion located on the weft edge of the two-ply fabric portion, the oblique direction connection portion located on the inclined edge of the two-ply fabric portion, and the two-ply fabric portion And a partial joint located at the boundary of each joint, and provide a seam-free cylindrical geotextile tube having a strength efficiency of 50% or more.

Geotextile Tube, Cylindrical, Hooked, Double-Woven Fabric, Unsealed

Description

Geotextile tube without sewing line and method for manufacturing the same {Method for Manufacturing the Geotextile Tube without Sewing Line}

The present invention relates to a geotextile tube that is blocked at both ends and there is no seam, and to a method of manufacturing the same, in particular, weaving at the same time forming the weft direction connection and the inclination connection to form a cylindrical geotextile tube without a separate sewing process And a cylindrical geotextile tube.

In general, geotextile tubes are made of permeable geotextiles, which are filled with dredged soil such as soil, sand and gravel by hydraulic or mechanical methods. Geotextile tube is used for environmental pollutant treatment, ecological artificial dike, dredged dumping dike, coastal erosion dike, coastal construction road.

Geotextile tube, which is currently commercialized, manufactures a geotextile tube of about 4.0m in diameter by sewing a woven fabric using a 2.2m wide polypropylene split yarn. Geotextile tubes vary in diameter and length depending on site conditions and installation possibilities, typically 50 to 600m in length, 4 to 5m in width and 1.5 to 2m in fill height. In the upper part of the geotextile tube, inlet or drainage holes are installed at regular intervals to fill the dredged soil by hydraulic method, and the structure can be constructed by using soil having a high water content or a very low soil strength.

Recently, as the projects applying geotextile tubes have become larger, the geotextile tubes have been required to be more durable and wider. The width of woven fabric for geotextile tube production at home and abroad is 2.2m for polypropylene and 3.4 ~ 4.57m for polyester. However, in order to manufacture a geotextile tube with a diameter of 3 to 4 m, the unfolded width is about 9 to 12 m. However, due to the limitations of the weaving technology, the geotextile tube having the desired diameter is manufactured through a sealing process.

That is, the conventional geotextile tube manufacturing process has to go through a suture process to make a two-dimensional planar fabric into a three-dimensional three-dimensional cylindrical.

However, since the sealing process is added to the manufacturing process, there is a problem in that the manufacturing cost is increased and economic efficiency is lowered. In addition, the geotextile tube that occurs during or immediately after construction has a defect called judgment or destruction, which is a problem that appears mainly in the suture. Therefore, the current general management specification regulations recommend more than 50% of the sealing efficiency (strength percentage of the strength of the woven fabric), but to achieve this, there is a problem that a separate process is added to increase the manufacturing cost. In other words, if the sealing efficiency is lowered, the overall fabric strength should be stronger, and thus the manufacturing cost increases because additional high-density weaving is required.

In order to solve the problems of the prior art, to provide a method of manufacturing a cylindrical geotextile tube that is closed at both ends without a sealing process, to provide a high-strength cylindrical geotextile tube.

The present invention provides a method for producing a cylindrical geotextile tube that is closed at both ends without a sealing process, and in particular, to provide a cylindrical geotextile tube with high strength efficiency of the joint. To this end, it is to provide a method of manufacturing a cylindrical geotextile tube excellent in strength and stability by forming a joint at the same time as weaving.

In order to solve the above problems, according to a preferred embodiment of the present invention, a two-ply fabric part consisting of two fabrics separated from each other, the weft direction connection portion located at the weft direction edge of the two-ply fabric part, the oblique direction of the two-ply fabric part Provides a cylindrical geotextile tube free of seams having an inclined seam at the edge and a partial seam at the boundary between the two-ply fabric and each seam, wherein the strength efficiency of the seam is at least 50%. .

According to another suitable embodiment of the present invention, the stitching boundary is one yarn 4 to 80 selected from the group consisting of polyester yarn, nylon yarn or para aramid yarn having fineness of 2000 to 8000 denier is arranged in the oblique or weft direction It provides a cylindrical geotextile tube without a seam, characterized in that there is.

According to another suitable embodiment of the present invention, weaving a first weft direction connection portion; Weaving the double-ply fabric and simultaneously engaging the oblique edge to form an oblique connection; And weaving a second weft direction joining unit, wherein one yarn selected from the group consisting of polyester yarns, polyamide yarns, or para aramid yarns at the boundary between the weft yarn joining portion or the warp yarn joining portion and the double-ply fabric portion; It provides a method for producing a seam-free cylindrical geotextile tube, characterized in that 4 to 80 strands are arranged in the weft direction or inclined direction to form a joining boundary.

According to another suitable embodiment of the present invention, the method of manufacturing a seam-free cylindrical geotextile tube, characterized in that the weft direction joining portion and the oblique direction joining portion is a plain weave or a strained plain weave, and the double-ply fabric portion is woven into a twill tissue. To provide.

Since the geotextile tube manufactured by the present invention is manufactured in a cylindrical shape without a sewing process, the manufacturing cost is reduced and the economic efficiency and work efficiency are excellent. Is reduced.

The present invention manufactures a geotextile tube in the form of an integral weave in order to increase the strength efficiency of the joint to more than 50% to produce a fabric in the form of a tube that can be installed without sewing.

The cylindrical geotextile tube of the present invention is made in the form of a one piece woven fabric. In the present invention, using a dobby loom or a jacquard loom, two layers of fabric and one layer of joints are simultaneously manufactured at the time of weaving the geotubes so that the lengthwise edges are stitched and both ends are closed. Prepare the tube. In the present invention, in order to increase the strength of the connection part, the method of weaving the connection part and the double-ply fabric part is different, and the high-strength yarn is added to the boundary part of the connection part and the double-ply fabric part to increase the sealing efficiency.

1 shows a geotextile tube manufactured in the present invention. Hereinafter, the weaving method of the geotextile tube of the present invention will be described in detail with reference to FIG. 1.

The geotextile tube 10 of the present invention is the step of weaving the first weft direction connection portion 12a (S11), while weaving the double-ply fabric portion 11, and at the same time tangentially inclined the edge inclined connection portion 13 Forming a step (S12); And weaving the second weft direction engaging portion 12b (S13).

First weave a layer of first weft direction connection portion 12a (S11). The first weft direction connection part 12a may apply various types of tissues, and in the present invention, it is possible to weave 1/1 plain weave, deformed plain weave, Twill, and rib tissue, in particular 1/1 plain weave. This is preferred. The density can be varied depending on the choice of weaving method. The first weft direction joining portion 12a is woven at a high density by using yarn of a large island degree.

It is preferable to use a polypropylene yarn, a polyester yarn, a nylon yarn, and a para-aramid yarn as a yarn of a fineness degree. In the case of polyester yarns, the fineness is preferably 2000 denier or more and the strength is 8 g / d or more. When the yarn of the fineness is polypropylene yarn, the fineness is preferably 2000 denier or more and the strength is 7 g / d or more. When the yarn of the fineness is polyamide yarn, the fineness is preferably 2000 denier or more and the strength is 8 g / d or more. When the yarn of a large fineness is aramid yarn, it is more preferable that it is a para aramid yarn, It is preferable that a fineness is 2000 denier or more, and the intensity | strength is 20 g / d or more. In particular, it is most preferable to use aramid yarn to improve the bonding strength. In addition, the width of the one-ply first weft direction joining portion 12a is preferably 2 to 5 inches.

Next, the two-ply fabric part 11 weaves two-ply fabric parts continuously when the weaving of the first weft direction connection part 12a is completed (S12). The double-ply fabric section 11 should have an appropriate level of strength, but should be selected in consideration of the permeability of the woven fabric. For this purpose, it is preferable to select a tissue having a low intersection point of light and weft yarn, in particular, weaving with twill or 1/2 twill.

In the present invention, in order to increase the strength of the weft direction connection portion 12a, the boundary portion that changes from the connection portion to the double-ply fabric portion 11, that is, the connection boundary portion of the first weft direction connection portion 12a and the double-ply fabric portion 11 ( Weft density of 14) was increased. The two-ply fabric part 11 and the first weft direction connection part 12a have different weaving structures, and this change may reduce the strength of the connection part. Therefore, in order to prevent a decrease in the sealing efficiency caused by such a change, yarns of 2000 to 8000 deniers in the weft direction are formed in the weaving direction of the two-ply fabric part 11 and the first weft direction fastening part 12a. Additional 80 strands were added to increase density. At this time, the engagement boundary 14 is formed on the first weft direction connection part 12a and the double-ply fabric part 11 based on the connection line. It is preferable to use polyester yarn or para aramid yarn as a yarn of the Taisum degree of 2000-8000 denier.

In the present invention, the double-ply fabric portion 11 is woven into a cylindrical shape. To this end, when weaving the double-ply fabric 11, the warp edges 13 are formed by weaving the warp edges of the double fabric, that is, the left and right ends by about 2 to 5 inches. The weave of the oblique direction engagement portion 13 may be woven in the same or similar manner as the first and second weft direction engagement portions 12a and 12b. In other words, both ends of the fabric in the width direction of the fabric is woven and then weaved using a dobby weaving machine to form a 1/2 twill structure. At this time, the width of the inclined connection 13 is preferably 2 to 5 inches. When the width of the inclined joint 13 is wider than 5 inches, the appearance of the tube becomes bad during construction. As a method of improving the strength of the oblique direction joining portion 13, a method used for weaving the joining portions 12a and 12b in the first and second weft directions is used. That is, the stitching boundary portion 14 is arranged by additionally arranging 4 to 80 strands of yarns of 2000 to 8000 deniers in the diagonal direction to the stitching boundary portion 14 of the double-ply fabric portion 11 and the oblique direction stitching portion 13. Increased the density. At this time, the stitching boundary 14 is formed in the diagonal connecting portion 13 and the double-ply fabric portion 11 on the basis of the connecting line. It is particularly preferable to use polyester yarns or para-aramid yarns as the yarns of the 2000 to 8000 denier-thickness yarns used in the formation of the joining boundary 14. As a result, the strength of the inclined seam joint is the same as that of the weft seam joint.

When the weaving of the double-ply fabric part 11 is completed, the second weft direction connection part 12b is formed (S13). The second weft direction fastener 12b can be woven in the same manner as the first weft direction fastener 12a. Specifically, it is possible to weave 1/1 plain weave, strain plain weave (Twill), rib (Rib) weave, especially 1/1 plain weave. The density can be varied depending on the choice of weaving method. The second weft direction fastening portion 12b is also woven at a high density by using a yarn of a large degree of fineness. Similar to the first weft direction fastening portion 12a, a polypropylene yarn, a polyester yarn, a nylon yarn, and a para- It is preferable to use aramid yarn. In particular, it is most preferable to use aramid yarn to improve the bonding strength. Preferably, the width of the one-ply second weft direction engagement portion 12b is 2 to 5 inches.

Boundary that changes from the double weave part 11 to the second weft direction part 12b to increase the strength of the inclined part at the boundary between the two-ply fabric part 11 and the second weft direction part 12b. The weft density of the portion, i.e., the wetting boundary 14 of the second weft direction stitching portion 12b and the two-ply weaving portion 11, was increased. The two-ply fabric 11 and the second weft seam 12b have different weave structures, and this change may reduce the strength of the seam. Therefore, in order to prevent the deterioration of the sealing efficiency due to such a change, yarns of 2000 to 8000 deniers in the weft direction are formed in the wetting direction 14 of the double weaving part 11 and the second weft direction fastening part 12b. Additional 80 strands were added to increase density. At this time, the engagement boundary 14 is formed on the second weft direction connection part 12b and the double-ply fabric part 11 based on the connection line. It is preferable to use polyester yarn or para aramid yarn as a yarn of the Taisum degree of 2000-8000 denier.

Geotextile tube manufactured by the above method can be woven by adjusting the length and width depending on the application. In addition, depending on the construction form, the filling inlet can be installed in the geotextile tube at regular intervals to fill the filling material such as soil, sand and gravel.

The geotextile tube manufactured by the above method can produce a geotextile tube having a strength efficiency of 50% or more in strength efficiency, that is, the strength efficiency of the weft or inclined joint with respect to the strength of the double-ply fabric.

Strength efficiency was computed by the following formula.

[Formula 1]

Strength efficiency (%) = (joint strength or seam strength) / (double layer fabric strength) × 100

In the present invention, the geotextile double woven fabric strength and splice strength were measured by the ASTM D 4595 method.

Hereinafter, the present invention will be described in detail with reference to Examples, but the scope of the present invention is not limited by the Examples.

Example 1

Using a dobby weaving machine, weaving polyester high strength yarns with 3000 denier fineness in the direction of warp and weft yarns with a density of 20 pieces / inch on average, weaving the weft direction joints in 1/1 plain weave, weft direction joints and double-ply fabrics A polyester high strength yarn of 6000 denier was placed in the weft direction by 30 strands at the negative boundary portion to form a stitched boundary portion. The double-ply fabric part was woven by applying 1/2 Twill texture, and the slanted connection part was also stitched by incorporating 6000 high-density polyester yarns with 30 strands to the left and right of the boundary with the double-ply fabric part. The boundary was formed, and the oblique junction tissue was fabricated with a cylindrical geotextile tube applying 1/2 Twill strain tissue. Physical properties of the prepared geotextile tube is shown in Table 1.

Example 2

Using a dobby weaving machine, para-aramid yarns with a fineness of 3000 deniers are arranged 20 strands on the left and right of the boundary portion between the warp and double fabric portions, and before or after the seam boundary is formed even when the weft direction is formed. A cylindrical geotextile tube was prepared in the same manner as in Example 1 except that 20 aramid yarns having a fineness of 3000 denier were entrapped. Even in this case, the density of the total warp fabric averages 20 pieces / inch. Physical properties of the prepared geotextile tube is shown in Table 1.

Comparative Example 1

Tubular geotextiles were prepared through two steps of weaving and suture using polypropylene. Table 2 shows the physical properties of the prepared geotextile tube.

Comparative Example 2

A tubular geotextile tube was fabricated using a dobby weaving machine using a high-strength polyester yarn with 3000 denier fineness and the fabrication of the splices as 1/1 square weave and the structure of the two-ply fabric as 1/2 twill. The stitching boundary of Example 1 was not formed. The warp density of the whole fabric averages 20 / inch and the weft density is 20 / inch. Physical properties of the manufactured tubular geotextile are as follows.

Double layer fabric strength
(ton / m) Shinto (%) Connection strength
(ton / m) Strength efficiency (%) Example 1 19 15 13.5 71 Example 2 19 14 14.3 75.2

Double layer fabric strength
(ton / m) Shinto (%) Suture strength
(ton / m) Strength efficiency (%) Comparative Example 1 20 10 10 50 Comparative Example 2 19 15 8.6 45

1 is a cross-sectional view of a cylindrical geotextile tube made in accordance with the present invention.

Claims (4)

Two-ply fabric section consisting of two separate fabrics, Weft direction connecting portion located at the weft edge of the two-ply fabric, An inclined joint formed at an inclined edge of the double-ply fabric part, and A stitching boundary located at the boundary of the double-ply fabric part and each stitching part, Cylindrical geotextile tubes with no seam with a seam strength of 50% or more. The method of claim 1, wherein the stitching boundary is characterized in that four to 80 strands of one selected from the group consisting of polyester yarn, nylon yarn or para aramid yarn having a fineness of 2000 to 8000 denier is arranged in the oblique or weft direction. Cylindrical geotextile tubes without seams. Weaving the first weft direction engagement portion; Weaving the double-ply fabric and simultaneously engaging the inclined edge to form an inclined seam; And Weaving a second weft direction engagement portion, The weaving boundary by arranging 4 to 80 strands of one yarn selected from the group consisting of polyester yarns, polyamide yarns or para aramid yarns at the boundary between the weft direction tie section or the warp direction tie section and the double-ply fabric section. Method of producing a cylindrical geotextile tube without seams, characterized in that to form a. The method of claim 3, wherein the weft direction joining portion and the oblique direction joining portion are plain or modified plain weave, and the double-ply fabric portion is woven into a twill structure.

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