WO2019015033A1 - 一种耐久加筋滤网及其制作方法 - Google Patents

一种耐久加筋滤网及其制作方法 Download PDF

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Publication number
WO2019015033A1
WO2019015033A1 PCT/CN2017/100348 CN2017100348W WO2019015033A1 WO 2019015033 A1 WO2019015033 A1 WO 2019015033A1 CN 2017100348 W CN2017100348 W CN 2017100348W WO 2019015033 A1 WO2019015033 A1 WO 2019015033A1
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WIPO (PCT)
Prior art keywords
warp
weft
polyester
repeating
density
Prior art date
Application number
PCT/CN2017/100348
Other languages
English (en)
French (fr)
Inventor
农远腾
余德荣
Original Assignee
纤科工业（珠海）有限公司
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Publication of WO2019015033A1 publication Critical patent/WO2019015033A1/zh

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00—Foundations for pavings
    • E01C3/04—Foundations produced by soil stabilisation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/04—Filters
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/20—Industrial for civil engineering, e.g. geotextiles
    • D10B2505/204—Geotextiles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0051—Including fibers
    • E02D2300/0065—Including fibers made from textile

Definitions

  • the present invention relates to the field of geomaterials, and in particular to a durable reinforcing mesh screen having both geotextile and geogrid performance and a manufacturing method thereof.
  • the present invention is based on a Chinese patent application filed on July 19, 2017, the application number of which is incorporated herein by reference.
  • Geotechnical materials are synthetic materials used in geological engineering and civil engineering. Common geotechnical materials include geotextiles, geogrids, geotextiles, geotechnical mats, geonets, etc. Among them, geotextile is a water-permeable cloth geomaterial produced by weaving technology. It has the advantages of light weight, good overall continuity, simple construction and high strength. It is often used in foundations and roadbeds to reinforce, isolate and Filter and so on. Geogrid is a grid-like product with mesh as a raw material. It has the advantages of high strength and creep resistance. It is suitable for various dams and subgrade reinforcement, slope protection and cave wall. Reinforcement and reinforcement of permanent load-bearing foundations such as large airports, parking lots, and dock yards.
  • composite geotechnical materials are typically produced by bonding two or more layers of individual geotextiles together by an adhesive treatment.
  • Adhesion treatment includes the use of adhesive bonding, heat treatment, and the like.
  • the processing of geomaterials using adhesives or heat-treated bonding is complicated, and the geomaterials after adhesion tend to become hard and brittle, failing to maintain good flexibility and resistance to stress.
  • Another object of the present invention is to provide a method of preparing a durable reinforced filter screen.
  • the present invention provides a durable reinforced screen comprising interwoven warp yarns and weft yarns, the warp yarn comprising warp yarn repeats which are alternately arranged by a plurality of polyester fibers and a plurality of polypropylene fibers
  • the weft yarn comprises a repeating section of weft yarns which are alternately arranged by a plurality of polyester fibers and a plurality of polypropylene fibers.
  • the warp yarn repeating section is formed by alternately repeating a plurality of polyester multifilaments and a plurality of polypropylene monofilaments; the weft repeating section is composed of a plurality of polyester multifilaments and a plurality of polypropylene splitting filaments Alternately repeated
  • a further technical solution is that, in the warp yarn repeating section, the warp density of the plurality of polyester fibers is smaller than the warp density of the plurality of polypropylene fibers; in the repeating section of the weft yarn, the weft density of the plurality of polyester fibers is less than or equal to The weft density of a plurality of polypropylene fibers.
  • the warp yarn further comprises a cloth edge section composed of a plurality of non-twisted polyester multifilaments or twisted polyester multifilaments on both sides of the warp yarn repeating section;
  • the warp yarn density of the ester multifilament or the twisted polyester multifilament is greater than the warp density of the plurality of polyester multifilaments of the warp repeat.
  • a further technical solution is that the warp yarn and the weft yarn are interlaced to form a 1/1 plain weave.
  • the present invention provides a method for manufacturing a durable reinforced filter screen, the method comprising the steps of: preparing a warp yarn: the warp yarn comprises alternating repeating of a plurality of polyester fibers and a plurality of polypropylene fibers The warp yarn repeating section; preparing the weft yarn: the weft yarn comprises a repeating section of the weft yarn which is alternately arranged by a plurality of polyester fibers and a plurality of polypropylene fibers; the warp yarn and the weft yarn are interwoven by a loom to form a durable reinforced filter screen .
  • the warp yarn repeating section is formed by alternately repeating a plurality of polyester multifilaments and a plurality of polypropylene monofilaments; the weft repeating section is composed of a plurality of polyester multifilaments and a plurality of polypropylene splitting filaments Alternately repeated
  • a further technical solution is that, in the warp yarn repeating section, the warp density of the plurality of polyester multifilaments is smaller than the warp density of the plurality of polypropylene monofilaments; and the weft density of the plurality of polyester multifilaments in the weft repeating section less than or equal to The weft density of a plurality of polypropylene split yarns.
  • a further technical solution is that a plurality of non-twisted polyester multifilaments or twisted polyester multifilaments are arranged on both outer sides of the warp yarn repeating section to form a cloth edge section; a plurality of non-twisted polyester multifilament yarns in the cloth edge section or The warp density of the twisted polyester multifilament is greater than the warp density of the plurality of polyester multifilaments of the warp repeat.
  • a further technical solution is that the warp yarn and the weft yarn are interlaced to form a 1/1 plain weave.
  • the warp yarn and the weft yarn respectively include warp yarn repeating sections and weft yarn repeating sections which are formed by repeating arrangement of polyester fibers and polypropylene fibers.
  • the polyester fibers in the warp repeats are interlaced with the polyester fibers in the weft repeats to form a highly flexible geotextile portion.
  • the geotextile portion provides isolation and filtration properties to isolate different mechanical properties and Hydraulic performance of the soil layer.
  • the polypropylene fibers in the repeating section of the warp yarn are interwoven with the polypropylene fibers in the repeating section of the weft yarn to form a geogrid portion having high hardness and high strength, and the geogrid portion provides reinforcement to the soil, etc., in particular, The pressure of carrying large clods, large rocks, etc.
  • the geotextile part and the geogrid part are intertwined and closely combined to form a single layer of reinforced filter screen. This interwoven structure facilitates more uniform dispersion of loads loaded on the geotextile portion or the geogrid portion, and better enhances soil properties including tensile strength and the like.
  • the geogrid is partially supported around the geotextile section, which can significantly improve the planarity and mechanical stability of the geotextile and reduce the wrinkling or deformation of the geotextile.
  • the reinforced filter screen of the invention has high strength, good corrosion resistance and long service life, and does not require multi-layer combination of geotextile and geogrid, avoids slippage between layers, and is convenient to use, and reduces construction cost and construction ⁇ between.
  • the number of the plurality of polyester fibers alternately repeatedly arranged and the number of the plurality of polypropylene fibers may be adjusted as needed.
  • the number of the plurality of polyester fibers alternately arranged and the number of the plurality of polypropylene fibers can also be adjusted.
  • the specific value can be determined according to the actual reinforcement effect.
  • the number of polyester fibers in the warp repeat segment and the weft repeat segment can be set larger than the number of polypropylene fibers, geogrid
  • the grid portion need not be too dense, and the geotextile portion is filled with the mesh of the geogrid portion.
  • the number of repeated arrangement of the plurality of polyester fibers and the plurality of polypropylene fibers alternately arranged may also be adjusted according to practical application requirements, and the desired durable reinforcing mesh can be obtained by adjustment. Width.
  • the plurality of polyester fibers alternately repeatedly arranged are polyester multifilaments, and the plurality of polypropylene fibers are polypropylene monofilaments.
  • the plurality of polyester fibers alternately and repeatedly arranged are polyester multifilaments, and the plurality of polypropylene fibers are polypropylene split filaments.
  • the polyester multifilament is a bundle of filaments spun from a porous spinneret, which has good flexibility and can be a non-twisted polyester multifilament.
  • the polypropylene monofilament is a single filament spun from a single-hole spinneret with high strength and hardness.
  • the polypropylene split film is generally made of a polypropylene film sheet which is cut into a certain width and stretched by a technique such as cutting, ij, punching, etc., and the fabric woven from the split film is dense.
  • the polyester multifilament, the polypropylene monofilament and the polypropylene split yarn are both high strength and high modulus fibers.
  • the geotextile part of the durable reinforced filter mesh is made of polyester multifilament warp and weft, which is more flexible.
  • the geogrid part of the durable reinforced filter is made of polypropylene monofilament and polypropylene split yarn, which has higher compression resistance and tensile properties.
  • the number of yarns per unit length of the polypropylene fiber constituting the geogrid portion is larger than the number of yarns per unit length of the polyester fiber constituting the geotextile portion
  • the structure of the polypropylene fiber in the geogrid part is made tighter to achieve better reinforcement and reinforcement effect; the same layer makes the geotextile part form a certain pore, which is beneficial to the filtering effect of the geotextile part.
  • a hem section is added on both sides of the warp yarn repeating section.
  • a general hem section can be used, and a side section composed of a plurality of non-twisted polyester multifilaments is added on both sides of the warp yarn repeating section to form an interlace.
  • the edge portion preferably has a greater warp density than the plurality of polyester multifilaments of the warp yarn repeating section, so that the edge structure is more compact and less susceptible to damage.
  • a special hem section can be used, and a side edge section composed of a plurality of twisted polyester multifilaments is added on both sides of the warp yarn repeating section to participate in the interlacing, and the polyester compound is added.
  • the silk structure is stronger, the strength and elasticity are higher, and the edge of the fabric is advantageous for suturing the edge of the durable reinforced filter mesh without damaging the edge of the fabric, and the seam strength is higher.
  • the edge portion preferably has a plurality of polyester multifilaments than the warp yarn repeating segment The greater warp density makes the fabric more compact.
  • the durable reinforced filter of the present invention is a plain woven fabric having the advantages of having many interlacing points and the same effect on the front and back sides.
  • the density is lower, the weight is lighter, and the use is convenient.
  • the preparation method is relatively simple and the cost is low.
  • plain weaves provide better permeable filtration.
  • plain weave fabrics also provide more interlacing points to ensure a tight geogrid structure.
  • the durable reinforced filter of the present invention has a simple preparation method, is easy to handle, and can realize large-scale production.
  • the method first prepares the warp yarns and the weft yarns, respectively, and the warp yarns and the weft yarns respectively comprise warp yarn repeating sections and weft yarn repeating sections which are repeatedly arranged by polyester fibers and polypropylene fibers. Then, the warp yarn and the weft yarn are interlaced by a looming machine.
  • the polyester fiber in the repeating section of the warp yarn is interlaced with the polyester fiber in the repeating section of the weft yarn to form a highly flexible geotextile portion, and the geotextile portion provides isolation and filtration performance. .
  • the polypropylene fibers in the repeating section of the warp yarn are interwoven with the polypropylene fibers in the repeating section of the weft yarn to form a geogrid portion having high hardness and high strength, and the geogrid portion provides reinforcement to the soil, etc., in particular, Bear the pressure of large clods, large rocks, etc.
  • the geotextile part and the geogrid part are intertwined and closely combined to form a single layer of reinforced filter mesh, which is more conducive to more evenly distributing the load loaded on the geotextile part or the geogrid part, and better strengthening the soil. Performance, including tensile strength and so on.
  • 1 is a mechanical performance test data sheet of an embodiment of the durable reinforced filter of the present invention.
  • the durable reinforced screen of the present embodiment is formed by interlacing warp yarns and weft yarns, and includes a geotextile portion, a geogrid portion, and a general cloth edge in the structure. Its production method is:
  • the warp yarn comprises a warp yarn repeating section composed of 78 polyester multifilaments and 12 polypropylene monofilaments alternately arranged, and the warp yarn repeating section constitutes a warp yarn main body.
  • a cloth edge section composed of 1,44 non-twisted polyester multifilaments was arranged on both sides of the warp yarn repeating section.
  • the warp distribution is (from left to right): [0031] A ⁇ (B ⁇ C ⁇ ) ... n times (B ⁇ C ⁇ ) ... (B ⁇ C ⁇ ) B-A;
  • A is 144 non-twisted polyester multifilaments in a general edge section, having a linear density of 2200 dtex and a warp density of 144 ends/10 cm;
  • B is 12 polypropylene monofilaments for forming a geogrid portion in the warp repeating section, having a linear density of 1100 dtex and a warp density of 144 ends/10 cm;
  • C is 78 polyester multifilaments for forming a geotextile portion in the warp repeating section, having a linear density of 2200 dtex and a warp density of 78 ends/10 cm;
  • n is the number of intermediate repetitions of the warp repeat segment, which can be adjusted according to the width requirement, in this embodiment
  • the weft yarn comprises a weft repeating section formed by alternately repeating three polypropylene split yarns and 34 polyester multifilaments.
  • the specific distribution of weft yarns is (from cloth head to cloth tail):
  • E is three polypropylene split film wires for forming a geogrid portion in the repeating section of the weft yarn, the linear density is 4000 dtex, and the warp density is 34 ends/10 cm;
  • F is 34 polyester multifilaments used in the weft repeating section for constituting the geotextile portion, having a linear density of 1440 dtex and a warp density of 34 ends/10 cm.
  • the warp yarns and the weft yarns are arranged in the above-described structure and order, and woven by a looms to obtain a durable reinforced filter screen having a woven fabric structure of 1/1 plain weave.
  • the composition of the geotextile portion is a polyester multifilament, the linear density is 1440 dtex, the weft density is 34 ends/10 cm;
  • the warp yarn is a polyester multifilament, the linear density is 2200 dtex, and the warp density is 78 ends/10 cm.
  • the weft yarn is a polypropylene split film wire, the linear density is 4000 dtex, the weft density is 34 ends/10 cm;
  • the warp yarn is polypropylene monofilament, the linear density is 1100 dtex, the warp density is 144 ends/10 cm
  • the weft yarn is a polyester multifilament, the linear density is 1440 dtex, the weft density is 34 ends/10 cm;
  • the warp yarn is a non-twisted polyester multifilament, the linear density is 2200 dtex, and the warp density is 144 ends/10 cm.
  • the durable reinforced screen of the present embodiment is formed by interlacing warp yarns and weft yarns, and includes a geotextile portion, a geogrid portion, and a special hem.
  • the preparation method is as follows:
  • the warp yarn comprises a warp yarn repeating section which is formed by alternately repeating arrangement of 78 polyester multifilaments and 12 polypropylene monofilaments, and the warp yarn repeating section constitutes the main body of the warp yarn.
  • a cloth edge section composed of 1 44 twisted polyester multifilaments was arranged on both sides of the warp yarn repeating section.
  • the warp yarns are (from left to right):
  • A is 144 polyester twisted multifilaments in a special edge section, having a linear density of 8119 dtex and a warp density of 144 ends /10 cm;
  • B is 12 polypropylene monofilaments for forming a geogrid portion in the warp repeating section, having a linear density of 1100 dtex and a warp density of 144 ends /10 cm;
  • C is 78 polyester multifilaments for forming a geotextile portion in the warp repeating section, having a linear density of 2200 dtex and a warp density of 78 ends/10 cm;
  • n is the number of intermediate repetitions of the warp repeat segment, which can be adjusted according to the width requirement, in this embodiment
  • the weft yarn comprises a weft repeating section composed of three polypropylene split yarns and 36 polyester multifilaments.
  • the specific distribution of weft yarns is (from cloth head to cloth tail):
  • E is three polypropylene split film wires for forming a geogrid portion in the repeating section of the weft yarn, the linear density is 4000 dtex, and the weft density is 36 ends/10 cm;
  • F is 36 polyester multifilaments for forming a geotextile portion in the repeating section of the weft yarn, having a linear density of 4400 dtex and a weft density of 36 ends/10 cm.
  • the warp yarns and the weft yarns are arranged in the above-described structure and order, and woven by a looms to obtain a durable reinforced filter screen having a woven fabric structure of 1/1 plain weave.
  • the composition of the geotextile portion is a polyester multifilament, the linear density is 4400 dtex, and the weft density is 36 ends/10
  • the warp is a polyester multifilament with a linear density of 2200 dtex and a warp density of 78 ends/10 cm.
  • the composition of the geogrid is: the weft yarn is a polypropylene split film wire, the linear density is 4000 dtex, the weft density is 36 ends/10 cm; the warp yarn is a polypropylene monofilament, the linear density is 1100 dtex, and the warp density is 144 ends/10 cm; A grid structure of 10 cmxlO cm is shown on the reinforced filter screen.
  • the weft yarn is polyester multifilament, the linear density is 4400 dtex, the weft density is 36 ends/10 cm; the warp yarn is twisted polyester multifilament, the linear density is 8119 dtex, the twist is 50 ⁇ /m, the warp density 144 ends/10 cm
  • a prior art woven geotextile includes a geotextile portion and a general hem.
  • the preparation method thereof comprises:
  • the warp yarn includes a warp yarn repeating section composed of 72 polyester multifilaments repeatedly arranged. A hem portion composed of 144 non-twisted polyester multifilaments was arranged on both sides of the warp repeating section.
  • the warp yarns are specifically distributed (from left to right):
  • A is 144 non-twisted polyester multifilaments in the edge section, having a linear density of 2200 dtex and a warp density of 144 ends/10 cm;
  • B is 72 polyester multifilaments for forming a geotextile portion in the warp repeating section, having a linear density of 2200 dtex and a warp density of 72 ends/10 cm;
  • n is the number of intermediate repetitions, which can be adjusted according to the width requirement.
  • the width is ⁇ 500 cm.
  • the weft yarn includes a weft repeating section composed of repeating arrangement of 34 polyester multifilaments.
  • the specific distribution of weft yarns is (from cloth head to cloth tail):
  • F is 34 polyester multifilaments for forming a geotextile portion in the weft repeating section, having a linear density of 2200 dtex and a weft density of 34 ends/10 cm.
  • the warp yarns and the weft yarns are arranged in the above-described structure and order, and are obtained by weaving through a weaving mechanism.
  • the geotextile fabric has a 1/1 plain weave.
  • the composition of the geotextile is: the weft yarn is a polyester multifilament, the linear density is 2200 dtex, the weft density is 34 ends/10 cm; the warp yarn is a polyester multifilament, the linear density is 2200 dtex, and the warp density is 72 ends/10 cm.
  • the weft yarn is a polyester multifilament with a linear density of 2200 dtex and a weft density of 34 ends/10 cm.
  • the warp yarn is a polyester multifilament with a linear density of 2200 dtex, without twisting, and a warp density of 144 ends/10. Cm.
  • Another existing geotextile fabric includes a geotextile portion and a general fabric edge.
  • the preparation method includes:
  • the warp yarn includes a warp yarn repeating section composed of 72 polyester multifilaments repeatedly arranged. A hem portion composed of 144 non-twisted polyester multifilaments was arranged on both sides of the warp repeating section.
  • the warp yarns are specifically distributed (from left to right):
  • A is 144 polyester multifilaments in the edge section, having a linear density of 2200 dtex and a warp density of 144 ends/10 cm;
  • B is 72 polyester multifilaments for forming a geotextile portion in the warp repeating section, having a linear density of 2200 dtex and a warp density of 72 ends/10 cm;
  • n is the number of intermediate repetitions of the warp repeat segment, which can be adjusted according to the width requirement, in this comparative example
  • the weft yarn includes a weft repeating section composed of 34 polyester multifilaments repeatedly arranged.
  • the specific distribution of weft yarns is (from cloth head to cloth tail):
  • F is 34 polyester multifilaments for forming a geotextile portion in the weft repeating section, having a linear density of 4400 dtex and a weft density of 34 ends/10 cm.
  • the composition of the geotextile is: the weft yarn is a polyester multifilament, the linear density is 4400 dtex, the weft density is 34 ends/10 cm; the warp yarn is a polyester multifilament, the linear density is 2200 dtex, and the warp density is 72 ends/10 cm.
  • the weft yarn is a polyester multifilament, the linear density is 4400 dtex, the weft density is 34 ends/10 cm;
  • the warp yarn is a polyester multifilament, the linear density is 2200 dtex, no twist, the warp density is 144 ends/ 10 cm.
  • the durable reinforced screen prepared in Examples 1 to 2 and the woven geotextile prepared in Comparative Examples 1 to 2 were visually compared, and as a result, it was found that the structures of the durable reinforced screen prepared in Examples 1 to 2 were obtained.
  • the woven geotextiles prepared by comparing the ratios 1 to 2 are more stable, and the yarns are not easily slipped between each other, and are more reliable in practical use.
  • the durable reinforced filter provided by the present invention is a single-layer geocomposite material, which has the characteristics of geogrid and woven geotextile, excellent mechanical properties, good structural stability, and strong It has good tensile strength and deformation resistance, good corrosion resistance and high horizontal seaming force. It plays the role of reinforcement, penetrating filtration and anti-reflection crack in the construction of foundations such as roadbed and foundation, which can further extend the service life of the pavement.
  • the durable reinforced filter screen of the present invention is suitable for the construction of hillsides, dams, retaining walls, as well as the construction of subgrades, soft foundations, pile foundation caps, and the like.
  • the durable reinforced filter screen of the invention can effectively restrain the displacement of the soil, prevent soil erosion, improve the bearing capacity of the foundation, increase the stability of the foundation, prevent the ground from collapsing or cracking, prolong the service life of the foundation, and reduce the maintenance cost.
  • Durable reinforced filter mesh construction method of the invention It saves labor and labor and shortens the construction period.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Textile Engineering (AREA)
  • Civil Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Architecture (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Woven Fabrics (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

一种耐久加筋滤网及其制作方法，该耐久加筋滤网包括交织的经纱和纬纱，经纱包括由多根聚酯纤维和多根聚丙烯纤维交替重复排列而成的经纱重复段；纬纱包括由多根聚酯纤维和多根聚丙烯纤维交替重复排列而成的纬纱重复段。

Description

一种耐久加筋滤网及其制作方法
技术领域
[0001] 本发明涉及土工材料领域， 具体涉及一种兼具土工布和土工格栅性能的耐久加 筋滤网及其制作方法。 本发明以申请日为 2017年 7月 19日， 申请号为 CN20171059 1232.2的中国发明专利申请为基础， 该申请的内容引入本文作为参考。
背景技术
[0002] 土工材料是应用于地质工程和土木工程的合成材料， 常见的土工材料包括土工 布、 土工格栅、 土工毯、 土工席垫、 土工网等。 其中， 土工布是采用编织技术 生产的具有透水性的布状土工材料， 具有重量轻、 整体连续性好、 施工简便、 强度高等优点， 常应用在地基、 路基中， 起到加筋、 隔离和过滤等作用。 土工 格栅是一种以纤维为原料加工形成的具有网孔的类似格栅状的产品， 具有强度 高、 抗蠕变等优点， 适用于各种堤坝和路基加筋、 边坡防护、 洞壁补强以及大 型机场、 停车场、 码头货场等永久性承载地基加筋。
[0003] 在实际加筋过程中， 如果单独使用土工布， 土工布容易变形， 不能起到长期的 稳定的加筋作用。 如果单独使用土工格栅， 土工格栅不具备隔离作用， 在软土 地基或带孔洞的地基中不能很好地阻挡土层流失。 如果将土工布和土工格栅结 合， 有望制备得到具有两者优点的土工材料。 但是， 如果仅仅简单地将两种土 工材料叠合， 土工材料之间可能会产生滑移， 导致不能安全稳定地实现复合的 功能， 且增加了施工吋间和施工成本。 复合土工材料解决了上述问题。 复合土 工材料将多种不同的土工材料组合成一个整体， 多种不同的土工材料的结构紧 密结合， 以发挥更稳定的作用。
[0004] 在现有技术中， 复合土工材料通常是将两层或多层的单独的土工材料通过粘着 处理粘合在一起而制得的。 粘着处理包括使用胶粘剂粘结、 热处理等。 然而， 使用胶粘剂或采用热处理粘结的土工材料加工工序复杂， 且粘着后的土工材料 容易变硬变脆， 不能保持很好的柔韧性和耐应力的能力。
技术问题 [0005] 为了解决上述的问题， 本发明的主要目的是提供一种具有土工格栅和土工布复 合功能的单层的耐久加筋滤网。
[0006] 本发明的另一目的是提供一种耐久加筋滤网的制备方法。
[0007] 技术解决手段
[0008] 为实现上述主要目的， 本发明提供了一种耐久加筋滤网， 包括交织的经纱和纬 纱， 经纱包括由多根聚酯纤维和多根聚丙烯纤维交替重复排列而成的经纱重复 段； 纬纱包括由多根聚酯纤维和多根聚丙烯纤维交替重复排列而成的纬纱重复 段。
[0009] 进一步的技术方案是， 经纱重复段由多根聚酯复丝和多根聚丙烯单丝交替重复 排列而成； 纬纱重复段由多根聚酯复丝和多根聚丙烯裂膜丝交替重复排列而成
[0010] 进一步的技术方案是， 在经纱重复段中， 多根聚酯纤维的经纱密度小于多根聚 丙烯纤维的经纱密度； 在纬纱重复段中， 多根聚酯纤维的纬纱密度小于或等于 多根聚丙烯纤维的纬纱密度。
[0011] 进一步的技术方案是， 经纱还包括位于经纱重复段两侧的由多根无捻聚酯复丝 或加捻聚酯复丝构成的布边段； 布边段的多根无捻聚酯复丝或加捻聚酯复丝的 经纱密度大于经纱重复段的多根聚酯复丝的经纱密度。
[0012] 进一步的技术方案是， 经纱和纬纱交织形成 1/1平纹组织。
[0013] 为实现上述另一目的， 本发明提供一种耐久加筋滤网的制作方法， 该方法包括 以下步骤： 准备经纱： 经纱包括由多根聚酯纤维和多根聚丙烯纤维交替重复排 列而成的经纱重复段； 准备纬纱： 纬纱包括由多根聚酯纤维和多根聚丙烯纤维 交替重复排列而成的纬纱重复段； 通过织布机将经纱和纬纱交织， 形成耐久加 筋滤网。
[0014] 进一步的技术方案是， 经纱重复段由多根聚酯复丝和多根聚丙烯单丝交替重复 排列而成； 纬纱重复段由多根聚酯复丝和多根聚丙烯裂膜丝交替重复排列而成
[0015] 进一步的技术方案是， 在经纱重复段中， 多根聚酯复丝的经纱密度小于多根聚 丙烯单丝的经纱密度； 在纬纱重复段中， 多根聚酯复丝的纬纱密度小于或等于 多根聚丙烯裂膜丝的纬纱密度。
[0016] 进一步的技术方案是， 在经纱重复段两外侧排列多根无捻聚酯复丝或加捻聚酯 复丝， 形成布边段； 布边段的多根无捻聚酯复丝或加捻聚酯复丝的经纱密度大 于经纱重复段的多根聚酯复丝的经纱密度。
[0017] 进一步的技术方案是， 经纱和纬纱交织形成 1/1平纹组织。
问题的解决方案
发明的有益效果
有益效果
[0018] 由于在本发明的耐久加筋滤网中， 经纱和纬纱分别包括由聚酯纤维和聚丙烯纤 维重复排列形成的经纱重复段和纬纱重复段。 当经纱和纬纱交织吋， 经纱重复 段中的聚酯纤维与纬纱重复段中的聚酯纤维交织， 形成柔韧性高的土工布部分 ， 土工布部分提供隔离和过滤性能， 以隔离不同机械性能和水力性能的土层。 经纱重复段中的聚丙烯纤维和纬纱重复段中的聚丙烯纤维交织， 形成硬度大、 强度高的土工格栅部分， 土工格栅部分提供了对土壤等的加筋补强的作用， 尤 其可以承载大土块、 大石块的压力等。 土工布部分和土工格栅部分相互交织， 紧密结合， 形成了单层的加筋滤网。 这种交织的结构有利于更均匀地分散加载 在土工布部分或土工格栅部分上的荷载， 更好地增强土体的性能包括抗拉强度 等。 土工格栅部分支撑在土工布部分的四周， 能够显著提高土工布部分的平面 性和机械稳定性， 减少土工布的皱叠或变形。 本发明的加筋滤网强度大， 耐腐 蚀性能好， 使用寿命长， 无需土工布和土工格栅的多层组合， 避免了层间的滑 移， 且使用方便， 降低了施工成本和施工吋间。
[0019] 其中， 在经纱重复段中， 交替重复排列的多根聚酯纤维的根数和多根聚丙烯纤 维的根数可以根据需要进行调整。 在纬纱重复段中， 交替重复排列的多根聚酯 纤维的根数和多根聚丙烯纤维的根数也可以调整。 具体的数值可以根据实际加 筋效果需要而定。 调整经纱重复段和纬纱重复段中聚酯纤维的数量， 可以得到 不同间距的土工格栅部分； 调整经纱重复段和纬纱重复段中聚丙烯纤维的数量 ， 可以得到不同宽度的土工格栅部分。 对于一般的地基加筋工程而言， 可以设 定经纱重复段和纬纱重复段中聚酯纤维的根数大于聚丙烯纤维的根数， 土工格 栅部分无需过于密集， 且保证土工布部分充满土工格栅部分的网孔。 在经纱重 复段或纬纱重复段中， 交替重复排列的多根聚酯纤维和多根聚丙烯纤维的重复 排列次数也可以根据实际应用要求进行调整， 通过调整可以获得所需的耐久加 筋滤网的幅宽。
[0020] 此外， 在经纱重复段中， 交替重复排列的多根聚酯纤维是聚酯复丝， 多根聚丙 烯纤维是聚丙烯单丝。 在纬纱重复段中， 交替重复排列的多根聚酯纤维是聚酯 复丝， 多根聚丙烯纤维是聚丙烯裂膜丝。 其中， 聚酯复丝是由多孔喷丝板纺出 的细丝并合而成的丝束， 具有良好的柔韧性， 可以是无捻聚酯复丝。 聚丙烯单 丝是由单孔喷丝头纺出的单根长丝， 具有较高的强度和硬度。 聚丙烯裂膜丝一 般是由聚丙烯薄膜片经过切、 害 ij、 打孔等技术分裂成一定宽度经强拉伸而制成 的片丝， 由裂膜丝织成的织物较为密实。
[0021] 优选地， 上述聚酯复丝、 聚丙烯单丝和聚丙烯裂膜丝均采用高强度高模量的纤 维。 耐久加筋滤网的土工布部分由聚酯复丝经纬交织而成， 柔韧性更好。 耐久 加筋滤网的土工格栅部分由聚丙烯单丝和聚丙烯裂膜丝交织而成， 抗压性能和 抗拉性能更高。
[0022] 并且， 在经纱重复段或纬纱重复段中， 构成土工格栅部分的聚丙烯纤维单位长 度内的纱线根数比构成土工布部分的聚酯纤维单位长度内的纱线根数大， 使得 土工格栅部分的聚丙烯纤维结构更加紧密， 以达到更好的加筋增强效果； 同吋 使得土工布部分形成一定的孔隙， 有利于土工布部分发挥过滤的作用。
[0023] 此外， 为了防止本发明的耐久加筋滤网在经纱重复段两侧受力导致损坏， 在经 纱重复段两侧增加布边段。 对于不需要对耐久加筋滤网进行缝合的应用场合， 可以采用一般的布边段， 在经纱重复段两侧增加由多根无捻聚酯复丝构成的布 边段参与交织， 形成带有布边的耐久加筋滤网。 该布边段优选具有比经纱重复 段的多根聚酯复丝更大的经纱密度， 使得布边结构更加紧密， 不易被破坏。 对 于需要对耐久加筋滤网进行缝合的场合， 可以采用特殊的布边段， 在经纱重复 段两侧增加由多根加捻聚酯复丝构成的布边段参与交织， 加捻聚酯复丝结构更 加结实， 强度和弹性更高， 该布边有利于在对耐久加筋滤网的布边进行缝合吋 不损坏布边， 缝合强度更高。 该布边段优选具有比经纱重复段的多根聚酯复丝 更大的经纱密度， 使得布边结构更加紧密。
[0024] 另外， 本发明的耐久加筋滤网是平纹织物， 具有交织点多、 正反面效果相同等 优点。 且密度较低， 重量较轻， 使用方便。 制备方法相对简单， 成本也较低。 对于土工布部分， 平纹织物能够带来更好的透水过滤效果。 对于土工格栅部分 ， 平纹织物也能提供较多的交织点， 保证土工格栅结构紧密。
[0025] 而本发明的耐久加筋滤网制备方法简单， 容易操作， 可实现大规模的生产。 该 方法首先分别准备经纱和纬纱， 经纱和纬纱分别包括由聚酯纤维和聚丙烯纤维 重复排列形成的经纱重复段和纬纱重复段。 再通过织布机将经纱和纬纱交织， 此吋， 经纱重复段中的聚酯纤维与纬纱重复段中的聚酯纤维交织， 形成柔韧性 高的土工布部分， 土工布部分提供隔离和过滤性能。 经纱重复段中的聚丙烯纤 维和纬纱重复段中的聚丙烯纤维交织， 形成硬度大、 强度高的土工格栅部分， 土工格栅部分提供了对土壤等的加筋补强的作用， 尤其可以承担大土块、 大石 块等的压力。 土工布部分和土工格栅部分相互交织， 紧密结合， 形成了单层的 加筋滤网， 有利于更均匀地分散加载在土工布部分或土工格栅部分上的荷载， 更好地增强土体的性能， 包括抗拉强度等。
对附图的简要说明
附图说明
[0026] 图 1是本发明耐久加筋滤网实施例的机械性能测试数据表。
本发明的实施方式
[0027] 以下结合实施例以及附图对本发明的耐久加筋滤网及其制作方法作进一步说明 [0028] 实施例 1
[0029] 本实施例的耐久加筋滤网由经纱和纬纱交织而成， 在结构上包括土工布部分、 土工格栅部分和一般布边。 其制作方法为：
[0030] (1) 准备经纱： 经纱包括由 78根聚酯复丝和 12根聚丙烯单丝交替重复排列构 成的经纱重复段， 经纱重复段构成经纱的主体。 在经纱重复段两侧分别排列由 1 44根无捻聚酯复丝构成的布边段。 具体地， 经纱分布为 （从左至右） ： [0031] A→ (B→C→) ... n次 （B→ C→) ... (B→C→) B- A;
[0032] 其中，
[0033] A是一般布边段中的 144根无捻聚酯复丝， 线密度为 2200 dtex， 经纱密度为 144 ends/ 10 cm;
[0034] B是经纱重复段中用于构成土工格栅部分的 12根聚丙烯单丝， 线密度为 1100 dtex, 经纱密度为 144 ends/10 cm;
[0035] C是经纱重复段中用于构成土工布部分的 78根聚酯复丝， 线密度为 2200 dtex, 经纱密度为 78 ends/10 cm;
[0036] n是经纱重复段的中间重复次数， 可以根据幅宽需求进行调整， 在本实施例中
， 幅宽≥500cm。
[0037] (2) 准备纬纱： 纬纱包括由 3根聚丙烯裂膜丝和 34根聚酯复丝交替重复排列形 成的纬纱重复段。 纬纱具体分布为 （从布头至布尾） ：
[0038] E→F→E→F→E→F→…；
[0039] 其中，
[0040] E是纬纱重复段中用于构成土工格栅部分的 3根聚丙烯裂膜丝， 线密度为 4000 dtex, 经纱密度为 34 ends/10 cm;
[0041] F是纬纱重复段中用于构成土工布部分的 34根聚酯复丝， 线密度为 1440 dtex, 经纱密度为 34 ends/10 cm。
[0042] (3) 将经纱和纬纱按照上述的结构及顺序排列， 经由织布机织制而得到耐久 加筋滤网， 织物组织为 1/1平纹组织。
[0043] 在所得耐久加筋滤网中：
[0044] 土工布部分的组成： 纬纱为聚酯复丝， 线密度 1440 dtex, 纬纱密度 34 ends/10 cm; 经纱为聚酯复丝， 线密度 2200 dtex, 经纱密度 78 ends/10 cm。
[0045] 土工格栅部分的组成： 纬纱为聚丙烯裂膜丝， 线密度 4000 dtex, 纬纱密度 34 ends/10 cm; 经纱为聚丙烯单丝， 线密度 1100 dtex, 经纱密度 144 ends/10 cm; 在 加筋滤网上表现为 10 cmxlO cm的格栅结构。
[0046] 一般布边组成： 纬纱为聚酯复丝， 线密度 1440 dtex, 纬纱密度 34 ends/10 cm; 经纱为无捻聚酯复丝， 线密度 2200 dtex， 经纱密度 144 ends/10 cm。 [0047] 实施例 2
[0048] 本实施例的耐久加筋滤网由经纱和纬纱交织而成， 在结构上包括有土工布部分 、 土工格栅部分和特殊布边。 其制备方法为：
[0049] ( 1) 准备经纱： 经纱包括由 78根聚酯复丝和 12根聚丙烯单丝交替重复排列构 成的经纱重复段， 经纱重复段构成经纱的主体。 在经纱重复段两侧分别排列由 1 44根加捻聚酯复丝构成的布边段。 具体地， 经纱分别为 （从左至右） ：
[0050] A→ (B→C→) ... n次 （B→ C→) ... (B→ C→) B→ A;
[0051] 其中，
[0052] A是特殊布边段中的 144根聚酯加捻复丝， 线密度为 8119 dtex， 经纱密度为 144 ends /10 cm;
[0053] B是经纱重复段中用于构成土工格栅部分的 12根聚丙烯单丝， 线密度为 1100 dtex, 经纱密度为 144 ends /10 cm;
[0054] C是经纱重复段中用于构成土工布部分的 78根聚酯复丝， 线密度为 2200 dtex, 经纱密度为 78 ends/10 cm;
[0055] n是经纱重复段的中间重复次数， 可以根据幅宽需求进行调整， 在本实施例中
， 幅宽≥500cm。
[0056] (2) 准备纬纱： 纬纱包括由 3根聚丙烯裂膜丝和 36根聚酯复丝构成的纬纱重复 段。 纬纱具体分布为 （从布头至布尾） ：
[0057] E→ F→ E→F→ E→ F→ ...；
[0058] 其中，
[0059] E是纬纱重复段中用于构成土工格栅部分的 3根聚丙烯裂膜丝， 线密度为 4000 dtex, 纬纱密度为 36 ends/10 cm;
[0060] F是纬纱重复段中用于构成土工布部分的 36根聚酯复丝， 线密度为 4400dtex， 纬纱密度为 36 ends/10 cm。
[0061] (3) 将经纱和纬纱按照上述的结构及顺序排列， 经由织布机织制而得到耐久 加筋滤网， 织物组织为 1/1平纹组织。
[0062] 在所得耐久加筋滤网中：
[0063] 土工布部分的组成： 纬纱为聚酯复丝， 线密度 4400 dtex, 纬纱密度 36 ends/10 cm; 经纱为聚酯复丝， 线密度 2200dtex， 经纱密度 78 ends/10 cm。
[0064] 土工格栅部分组成： 纬纱为聚丙烯裂膜丝， 线密度 4000 dtex， 纬纱密度 36 ends/10 cm; 经纱为聚丙烯单丝， 线密度 1100 dtex， 经纱密度 144 ends/10 cm; 在 加筋滤网上表现为 10 cmxlO cm的格栅结构。
[0065] 特殊布边组成： 纬纱为聚酯复丝， 线密度 4400 dtex， 纬纱密度 36 ends/10 cm; 经纱为加捻聚酯复丝， 线密度 8119 dtex， 捻度 50捻 /m， 经纱密度 144 ends/10 cm
[0066] 对比例 1
[0067] 现有的一种有纺土工布， 在结构上包括有土工布部分和一般布边。 其制备方法 包括：
[0068] ( 1) 准备经纱： 经纱包括由 72根聚酯复丝重复排列构成的经纱重复段。 在经 纱重复段两侧分别排列由 144根无捻聚酯复丝构成的布边段。 经纱具体分布为 （ 从左至右） ：
[0069] Α→Β→· . · η次 （B→) ...B→ A;
[0070] 其中，
[0071] A是布边段中的 144根无捻聚酯复丝， 线密度为 2200 dtex， 经纱密度为 144 ends/ 10 cm;
[0072] B是经纱重复段中用于构成土工布部分的 72根聚酯复丝， 线密度为 2200 dtex, 经纱密度为 72 ends/10 cm;
[0073] n是中间重复次数， 可以根据幅宽需求进行调整， 在本对比例中， 幅宽≥500cm
[0074] (2) 准备纬纱： 纬纱包括由 34根聚酯复丝重复排列构成的纬纱重复段。 纬纱 具体分布为 （从布头至布尾） ：
[0075] F→F→F→…；
[0076] 其中，
[0077] F是纬纱重复段中用于构成土工布部分的 34根聚酯复丝， 线密度为 2200 dtex, 纬纱密度为 34 ends/10 cm。
[0078] (3) 将经纱和纬纱按照上述的结构及顺序排列， 经由织布机制织而得到的有 纺土工布， 织物组织为 1/1平纹组织。
[0079] 在所得的有纺土工布中：
[0080] 土工布部分组成： 纬纱为聚酯复丝， 线密度 2200 dtex， 纬纱密度 34 ends/10 cm ； 经纱为聚酯复丝， 线密度 2200 dtex， 经纱密度 72 ends/10 cm。
[0081] 一般布边组成： 纬纱为聚酯复丝， 线密度 2200 dtex， 纬纱密度 34 ends/10 cm; 经纱为聚酯复丝， 线密度 2200 dtex， 不加捻， 经纱密度 144 ends/10 cm。
[0082] 对比例 2
[0083] 现有的另一种有纺土工布， 在结构上包括有土工布部分和一般布边。 其制备方 法包括：
[0084] ( 1) 准备经纱： 经纱包括由 72根聚酯复丝重复排列构成的经纱重复段。 在经 纱重复段两侧分别排列由 144根无捻聚酯复丝构成的布边段。 经纱具体分布为 （ 从左至右） ：
[0085] Α→Β→· . · η次 （B→) ...B→ A;
[0086] 其中，
[0087] A是布边段中的 144根聚酯复丝， 线密度为 2200 dtex， 经纱密度为 144 ends/10 cm;
[0088] B是经纱重复段中用于构成土工布部分的 72根聚酯复丝， 线密度为 2200 dtex, 经纱密度为 72 ends/10 cm;
[0089] n是经纱重复段的中间重复次数， 可以根据幅宽需求进行调整， 在本对比例中
， 幅宽≥500cm。
[0090] (2) 准备纬纱： 纬纱包括由 34根聚酯复丝重复排列构成的纬纱重复段。 纬纱 具体分布为 （从布头至布尾） ：
[0091] F→F→ F→ ...；
[0092] 其中，
[0093] F是纬纱重复段中用于构成土工布部分的 34根聚酯复丝， 线密度为 4400 dtex, 纬纱密度为 34 ends/10 cm。
[0094] (3) 将经纱和纬纱按照上述的结构及顺序排列后， 经由织布机制织而得到有 纺土工布， 织物组织为 1/1平纹组织。 [0095] 在所得的有纺土工布中：
[0096] 土工布部分组成： 纬纱为聚酯复丝， 线密度 4400 dtex， 纬纱密度 34 ends/10 cm ； 经纱为聚酯复丝， 线密度 2200 dtex， 经纱密度 72 ends/10 cm。
[0097] —般布边组成： 纬纱为聚酯复丝， 线密度 4400 dtex， 纬纱密度 34 ends/10 cm; 经纱为聚酯复丝， 线密度 2200 dtex， 不加捻， 经纱密度 144 ends/10 cm。
[0098] 将实施例 1至 2制备的耐久加筋滤网和对比例 1至 2制备的有纺土工布进行表观对 比， 结果发现： 实施例 1至 2制备的耐久加筋滤网的结构比对比例 1至 2制备的有 纺土工布更加稳定， 纱线之间不容易滑移， 在实际应用更加牢靠。
[0099] 将实施例 1至 2制备的耐久加筋滤网和对比例 1至 2制备的有纺土工布进行机械性 能测试， 结果见图 1。
[0100] 图 1的结果表明， 与不带土工格栅结构的有纺土工布相比， 本发明的耐久加筋 滤网具有优良的力学性能。 例如， 将实施例 1与对比例 1进行对比， 将实施例 2和 对比例 2进行对比， 在经纱、 纬纱所采用的聚酯纤维结构、 排列方式相近的情况 下， 实施例 1和实施例 2具有更高的 2%和 5%伸长吋的拉伸强度。 且通过实施例 2 与对比例 2的对比， 可以看出， 采用特殊布边能够提高缝合强度。
[0101] 由上可见， 本发明提供的耐久加筋滤网是一种单层土工复合材料， 其兼备土工 格栅和机织土工布的特性， 力学性能优良， 结构稳定性好， 具有较强的抗拉强 度和抗变形能力， 防腐性好， 横向缝合力高， 在路基、 地基等基础建设的建造 中起到加筋、 渗透过滤、 防反射裂缝作用， 能够进一步延长路面使用寿命。
[0102] 最后需要强调的是， 以上仅为本发明的优选实施例， 并不用于限制本发明， 对 于本领域的技术人员来说， 本发明可以有各种变化和更改， 凡在本发明的精神 和原则之内， 所做的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。
[0103] 工业应用性
[0104] 本发明的耐久加筋滤网适用于山坡、 堤坝、 挡土墙的建设， 以及路基、 软弱地 基、 桩基础承台的建设等。 本发明的耐久加筋滤网能够有效约束土壤的位移， 防止水土流失， 提高地基的承载能力， 增加地基的稳定性， 防止地面坍塌或产 生裂纹， 延长地基的使用寿命， 减少维修费用。 本发明的耐久加筋滤网施工方 便， 省吋省力， 缩短工期。

Claims

权利要求书
[权利要求 1] 一种耐久加筋滤网， 包括交织的经纱和纬纱， 其特征在于： 所述经纱 包括由多根聚酯纤维和多根聚丙烯纤维交替重复排列而成的经纱重复 段； 所述纬纱包括由多根聚酯纤维和多根聚丙烯纤维交替重复排列而 成的纬纱重复段。
[权利要求 2] 根据权利要求 1所述的一种耐久加筋滤网， 其特征在于： 所述经纱重 复段由多根聚酯复丝和多根聚丙烯单丝交替重复排列而成； 所述纬 纱重复段由多根聚酯复丝和多根聚丙烯裂膜丝交替重复排列而成。
[权利要求 3] 根据权利要求 1所述的一种耐久加筋滤网， 其特征在于： 在所述经纱 重复段中， 所述多根聚酯纤维的经纱密度小于所述多根聚丙烯纤维的 经纱密度； 在所述纬纱重复段中， 所述多根聚酯纤维的纬纱密度小于 或等于所述多根聚丙烯纤维的纬纱密度。
[权利要求 4] 根据权利要求 2所述的一种耐久加筋滤网， 其特征在于： 所述经纱还 包括位于所述经纱重复段两侧的由多根无捻聚酯复丝或加捻聚酯复丝 构成的布边段； 所述布边段的所述多根无捻聚酯复丝或加捻聚酯复丝 的经纱密度大于所述经纱重复段的所述多根聚酯复丝的经纱密度。
[权利要求 5] 根据权利要求 1至 4任一项所述的一种耐久加筋滤网， 其特征在于： 所 述经纱和所述纬纱交织形成 1/1平纹组织。
[权利要求 6] —种耐久加筋滤网的制作方法， 其特征在于包括以下步骤： 准备经纱
： 所述经纱包括由多根聚酯纤维和多根聚丙烯纤维交替重复排列而成 的经纱重复段； 准备纬纱： 所述纬纱包括由多根聚酯纤维和多根聚丙 烯纤维交替重复排列而成的纬纱重复段； 通过织布机将经纱和纬纱交 织， 形成耐久加筋滤网。
[权利要求 7] 根据权利要求 6所述的一种耐久加筋滤网的制作方法， 其特征在于： 所述经纱重复段由多根聚酯复丝和多根聚丙烯单丝交替重复排列而成 ； 所述纬纱重复段由多根聚酯复丝和多根聚丙烯裂膜丝交替重复排 列而成。
[权利要求 8] 根据权利要求 6所述的一种耐久加筋滤网的制作方法， 其特征在于： 在所述经纱重复段中， 所述多根聚酯纤维的经纱密度小于所述多根聚 丙烯纤维的经纱密度； 在所述纬纱重复段中， 所述多根聚酯纤维的纬 纱密度小于或等于所述多根聚丙烯裂纤维的纬纱密度。
[权利要求 9] 根据权利要求 7所述的一种耐久加筋滤网的制作方法， 其特征在于： 在所述经纱重复段两外侧排列多根无捻聚酯复丝或加捻聚酯复丝， 形 成布边段； 所述布边段的所述多根无捻聚酯复丝或加捻聚酯复丝的经 纱密度大于所述经纱重复段的所述多根聚酯复丝的经纱密度。
[权利要求 10] 根据权利要求 6至 9任一项所述的一种耐久加筋滤网的制作方法， 其特 征在于： 所述经纱和所述纬纱交织形成 1/1平纹组织。
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