CN102409464B - Geotextile - Google Patents

Abstract

The invention relates to an industrial fabric comprising a plurality of yarns. The yarns are woven in a cross weaving mode in the warp direction and the weft direction by adopting a twill weaving method, so that any cross section of at least one direction of the warp direction and the weft direction of the yarns comprises 200 and 2000 monofilament fibers per inch, and the fineness of each monofilament fiber is within 50-500 denier. Therefore, the twill weaving method is matched with the monofilament fiber with high unit number and the gaps among the monofilament fibers, and under the condition of having enough strength, the high-strength monofilament fiber still has good water permeability, so that the use requirement can be met, and the convenience and the practicability in use are improved.

Description

Geotextile

technical field

The invention relates to a fabric, in particular to a geotextile covered in geotechnical occasions.

Background technique

In recent years, the extensive application and effectiveness of geotextiles in civil engineering and water conservancy, especially in post-disaster repair projects, has attracted the attention of the majority of engineering and technical personnel. Due to the harsh working environment of geotextiles, in many cases they are laid in soil with high humidity, so they must have good hydrolysis resistance, wet mechanical properties, and good water permeability.

Referring to FIG. 1 and FIG. 2 , taking the common civil engineering weaving fabric 1 as an example, it mainly includes several warp yarns 11 and several weft yarns 12 . During weaving, two warp yarns 11 and two weft yarns 12 are used to complete a cycle, and one weft yarn 12 is interwoven between the aforementioned warp yarns 11 one by one. The civil engineering fabric 1 woven by this method has high strength and firmness, and is the most commonly used weaving method.

However, since the civil engineering fabric 1 must meet the requirements of strength and water permeability, the number of monofilaments, or strength, or air gap of each yarn will determine whether the aforementioned civil engineering fabric 1 can allow water to pass through smoothly. The key to preventing the loss of sand and soil particles is that the warp yarn 11 and weft yarn 12 weaving orthogonally by the plain weave method will not be optimized due to the limitation of the weaving method and the number of monofilaments, and the density will be too high to cause poor water permeability. Good, or the dilemma of insufficient strength due to too low density, there is a disadvantage that strength and water permeability cannot be balanced, and cannot meet the needs of use.

Referring to Fig. 3 and Fig. 4, another kind of split-fiber geotextile 2 is taken as an example, which mainly includes several split-fiber yarns 21 interlaced in warp direction and weft direction by using plain weave method or twill weave method (twill weave). . Each split yarn 21 is formed by cutting a piece of film to form several split monofilaments 211 that are not disconnected from each other, and then processed by twisting.

However, since each splitting monofilament 211 is flat, its strength is lower than that of the monofilament shown in Figure 1, and more raw materials must be invested to achieve the required strength. Therefore, under the same strength requirements, the splitting filament The weight of the geotextile 2 is obviously heavy, and the cost is high, and the manpower requirement during construction is also high.

In view of the above-mentioned defects in the existing geotextile weaving, the inventor actively researches and innovates on the basis of years of rich practical experience and professional knowledge in the design and manufacture of such products, and cooperates with the application of academic theories, in order to create a new type of structure The geotextile can improve the existing geotextile and make it more practical. Through continuous research, design, after repeated trial samples and improvements, the present invention with practical value is finally created.

Contents of the invention

The purpose of the present invention is to overcome the defects of the existing geotextiles and provide a geotextile. The technical problem to be solved is to make the geotextile both strength and water permeability.

The purpose of the present invention and the technical problem to be solved are realized by the following technical solutions:

The geotextile of the present invention includes several yarns. The aforementioned yarns are interlaced in the warp and weft directions by twill weave, so that any cross-section of the aforementioned yarns in at least one of the warp and weft directions contains 200-2000 monofilament fibers per inch, and each The fineness of a monofilament fiber ranges from 50 deniers to 500 deniers.

In the geotextile of the present invention, any cross-section of the warp and weft directions of the aforementioned yarns contains 5-60 monofilament fibers per inch, and the fineness of each monofilament fiber is between 501 Denny - 2000 Denny.

In the geotextile of the present invention, the aforementioned yarns are divided into several multifilament yarns and several monofilament yarns, each multifilament yarn contains several monofilament fibers, and each monofilament yarn is a monofilament yarn. silk fiber.

In the geotextile of the present invention, the aforementioned multifilament yarns are respectively arranged in the warp direction, and the aforementioned monofilament yarns are respectively arranged in the weft direction, or both the weft direction and the warp direction.

In the geotextile of the present invention, the aforementioned multifilament yarns are respectively arranged in the weft direction, and the aforementioned monofilament yarns are respectively arranged in the warp direction, or the warp direction and the weft direction.

In the geotextile of the present invention, the aforementioned monofilament yarns are respectively arranged in the warp direction, and the aforementioned multifilament yarns are respectively arranged in the weft direction and the warp direction.

In the geotextile of the present invention, the aforementioned monofilament yarns are respectively arranged in the weft direction, and the aforementioned multifilament yarns are respectively arranged in the warp direction and the weft direction.

In the geotextile of the present invention, the aforementioned multifilament yarns are respectively arranged in the warp direction and the weft direction, and the aforementioned monofilament yarns are respectively arranged in the warp direction and the weft direction.

In the geotextile of the present invention, the aforementioned yarns are respectively a kind of multifilament yarn, and each multifilament yarn contains several monofilament fibers.

In the geotextile of the present invention, the twill weave used by the aforementioned yarns is one of n/1 twill - n/7 twill, and the aforementioned n value is between 2-7.

In the geotextile of the present invention, the aforementioned yarn is a high molecular polymer.

The beneficial effect of the present invention is that: using the twill weave method to cooperate with high unit number of monofilament fibers and the gaps therebetween, in the case of sufficient strength, it still maintains good water-permeable properties.

Description of drawings

Fig. 1 is a plan view, illustrates the civil engineering weaving cloth that generally forms with plain weave method in the prior art;

Fig. 2 is a sectional view of the civil engineering fabric shown in Fig. 1;

Fig. 3 is a plan view illustrating a general split-filament geotextile in the prior art;

Fig. 4 is a cross-sectional view of the aforementioned split wire geotextile shown in Fig. 3;

Fig. 5 is a plan view, illustrating the first implementation of a first preferred embodiment of a geotextile of the present invention;

Fig. 6 is a sectional view along section line 6-6 of Fig. 5;

Fig. 7 is a sectional view along section line 7-7 of Fig. 5;

Figure 8 is a plan view illustrating the second implementation of the first preferred embodiment;

Fig. 9 is a sectional view along section line 9-9 of Fig. 8;

Fig. 10 is a sectional view along section line 10-10 of Fig. 8;

Fig. 11 is a plan view, illustrating the third implementation style of the first preferred embodiment;

Fig. 12 is a sectional view along section line 12-12 of Fig. 11;

Fig. 13 is a sectional view along section line 13-13 of Fig. 11;

Figure 14 is a plan view illustrating the fourth implementation of the first preferred embodiment;

Fig. 15 is a sectional view along section line 15-15 of Fig. 14;

Figure 16 is a cross-sectional view along line 16-16 in Figure 14;

Fig. 17 is a plan view illustrating the fifth implementation of the first preferred embodiment;

Fig. 18 is a sectional view along section line 18-18 of Fig. 17;

Fig. 19 is a sectional view along section line 19-19 of Fig. 17;

Figure 20 is a plan view illustrating the sixth implementation of the first preferred embodiment;

Fig. 21 is a sectional view along section line 21-21 of Fig. 20;

Figure 22 is a cross-sectional view along line 22-22 in Figure 20;

Figure 23 is a plan view illustrating the second implementation of the first preferred embodiment;

Fig. 24 is a sectional view along the section line 24-24 of Fig. 23;

Fig. 25 is a sectional view along the section line 25-25 of Fig. 23;

Figure 26 is a plan view illustrating the first implementation of a second preferred embodiment of a geotextile of the present invention;

Fig. 27 is a sectional view along section line 27-27 of Fig. 26;

Fig. 28 is a sectional view along section line 28-28 of Fig. 26;

Figure 29 is a plan view illustrating a second implementation of the second preferred embodiment; and

FIG. 30 is a cross-sectional view taken along line 30-30 of FIG. 29. FIG.

detailed description

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, characteristics and effects of the geotextile proposed according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. Details are as follows.

Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

Referring to Fig. 5, Fig. 6, and Fig. 7, a first preferred embodiment of the geotextile 3 of the present invention comprises several yarns, and the aforementioned yarns are divided into several multifilament yarns 31 and several monofilament yarns Line 32.

The aforementioned multifilament yarn 31 and the aforementioned monofilament yarn 32 are respectively a kind of polymer in this preferred embodiment, such as polypropylene (polypropylene, PP), polyethylene terephthalate (Polyethyleneterephthalate, PET ), polyethylene (Polyethylene, PE). Each multifilament yarn 31 is bundled by several monofilament fibers 311, and the fineness of each monofilament fiber 311 is between 50 deniers and 500 deniers. Each monofilament yarn 32 is a monofilament fiber, and the fineness ranges from 501 deniers to 2000 deniers.

During weaving, the aforementioned multifilament yarns 31 and the aforementioned monofilament yarns 32 are interlaced in the warp and weft directions using a twill weave method (twill weave). One of -n/7 twill, the aforementioned n value is between 2-7, such as 2/2, 3/2, 4/2, 5/1, 6/1, 3/7...etc., with 2/ 1 Twill weave as an example, which means that there are two warp yarns (multifilament yarn 31 or monofilament yarn 32) on top and one weft yarn (multifilament yarn 31 or monofilament yarn 32) Woven underneath. What is important is that each section along one of the warp and weft directions contains 200-2000 monofilament fibers 311 or 5-60 monofilament yarns 32 per inch.

Thereby, the aforementioned multifilament yarn 31 and monofilament yarn 32 include the following seven changes:

1. As shown in Figures 5-7, the geotextile 3 is composed of the aforementioned monofilament yarns 32 arranged in the warp direction and the aforementioned multifilament yarns 31 arranged in the weft direction, interlaced by 2/1 twill weave Woven.

2. As shown in Figures 8-10, the geotextile 3 is composed of the aforementioned multifilament yarns 31 arranged in the weft direction and the aforementioned monofilament yarns 32 arranged in the weft and warp directions respectively, using 2/1 The twill weave is interlaced.

3. As shown in Figures 11-13, the geotextile 3 is composed of the aforementioned monofilament yarns 32 arranged in the weft direction and the aforementioned multifilament yarns 31 arranged in the warp direction, interlaced by a 2/1 twill weave method Woven.

4. As shown in Figures 14-16, the geotextile 3 is composed of the aforementioned multifilament yarns 31 arranged in the warp direction and the aforementioned monofilament yarns 32 arranged in the weft and warp directions respectively, using 2/1 The twill weave is interlaced.

5. As shown in Figures 17-19, the geotextile 3 is composed of the aforementioned monofilament yarns 32 arranged in the weft direction and the aforementioned multifilament yarns 31 arranged in the weft and warp directions respectively, using 2/1 The twill weave is interlaced.

6. As shown in Figures 20-22, the geotextile 3 is composed of the aforementioned monofilament yarns 32 arranged in the warp direction and the aforementioned multifilament yarns 31 arranged in the weft and warp directions respectively, using 2/1 The twill weave is interlaced.

7. As shown in Figures 23-25, the geotextile 3 is composed of the aforementioned multifilament yarns 31 arranged in the warp and weft directions and the aforementioned monofilament yarns 32 arranged in the weft and warp directions respectively, using 2/1 twill weave interlaced weaving.

Thereby, since the geotextile 3 adopts the twill weave method, a large number of multifilament yarns 31 or monofilament yarns 32 are used for interweaving, and each multifilament yarn 31 is composed of a high unit number of monofilament fibers 311. Therefore, it can not only make up for the fact that the twill weave method is not as strong as the plain weave method, but also make the surface strength of the geotextile 3 reach about 50KN/M, and the large number of gaps between the aforementioned fibers 311 can make the geotextile 3 The water permeability of geotextile 3 reaches 900 liters/M2.S, compared with the water permeability of general 25KN geotextiles of 111 liters/M2.S, or the water permeability of general 45KN geotextiles of 270 liters/M2.S, its The water permeability is significantly improved by 330%-800%.

Referring to Fig. 26, Fig. 27, and Fig. 28, it is a second preferred embodiment of the present invention, which is substantially the same as the first preferred embodiment, except that:

The geotextile 3 includes several multifilament yarns 31 interlaced in the warp and weft directions by adopting the 2/1 twill weave method. Each multifilament yarn 31 also includes several monofilament fibers 311 . The fineness of each monofilament fiber 311 ranges from 50 deniers to 500 deniers. And it is important that any section extending along one of the warp and weft directions contains 200-2000 monofilament fibers per inch.

It can also use the twill weave method to cooperate with high single-number monofilament fibers 311 and the gaps between them, and still maintain good water permeability under the condition of sufficient strength.

Referring to Fig. 29 and Fig. 30, the geotextile 3 is formed by interweaving the aforementioned multifilament yarns 31 arranged along the latitude and warp directions respectively by the 3/1 twill weave method.

As can be seen from the above, the geotextile of the present invention has the following advantages and effects:

The present invention adopts the twill weave method, and limits the monofilament fiber 311 that contains 200-2000 per inch, or the monofilament yarn 32 of 5-60, not only can obtain required cloth surface strength, and with aforementioned monofilament A large number of gaps between the silk fibers 311 maintain good water permeability, and meet the needs of use while having both strength and water permeability, thereby improving the convenience and practicality of use.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the method and technical content disclosed above to make some changes or modifications to equivalent embodiments with equivalent changes, but if they do not depart from the technical solution of the present invention, Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (8)

1. a woven geotextile, is characterized in that it comprises:

Several yarns, it is a kind of high molecular polymer, use polypropylene, polyethylene terephthalate, polyethylene is a kind of material wherein, and adopt twill with warp-wise, broadwise is staggered weaves, several polyfilament yarns at least distinguished by aforementioned yarn, each polyfilament yarn assembles bunchy by several monfil, make aforementioned woven geotextile warp-wise, any one section in one of them direction of broadwise, every English inch includes the monfil of 200-2000 bar, these monfil are in order to assemble polyfilament yarn described in bunchy, and fineness circle of each monfil of polyfilament yarn is in the red Buddhist nun of 50 Dan Ni-500.

2. woven geotextile according to claim 1, it is characterized in that, several monofilament yarns also distinguished by aforementioned yarn, each monofilament yarn is a monfil, any one section in aforementioned monofilament yarn warp-wise, another direction of broadwise, every English inch includes the monfil of 5-60 bar, and these monfil form described monofilament yarn, and fineness circle of the monfil of each monofilament yarn is in the red Buddhist nun of 501 Dan Ni-2000.

3. woven geotextile according to claim 2, is characterized in that, aforementioned polyfilament yarn follows warp-wise to arrange respectively, and aforementioned monofilament yarn follows broadwise or broadwise and warp-wise to arrange respectively.

4. woven geotextile according to claim 2, is characterized in that, aforementioned polyfilament yarn follows broadwise to arrange respectively, and aforementioned monofilament yarn follows warp-wise or warp-wise and broadwise to arrange respectively.

5. woven geotextile according to claim 2, is characterized in that, aforementioned monofilament yarn follows warp-wise to arrange respectively, and aforementioned polyfilament yarn follows broadwise and warp-wise to arrange respectively.

6. woven geotextile according to claim 2, is characterized in that, aforementioned monofilament yarn follows broadwise to arrange respectively, and aforementioned polyfilament yarn follows warp-wise and broadwise to arrange respectively.

7. woven geotextile according to claim 2, is characterized in that, aforementioned polyfilament yarn follows warp-wise and broadwise to arrange respectively, and aforementioned monofilament yarn follows warp-wise and broadwise to arrange respectively.

8. woven geotextile according to claim 1, is characterized in that, the twill that aforementioned yarn adopts is that n/1 twill-n/7 twill is wherein a kind of, and aforementioned n value circle is in 2-7.