CN211994523U - A kind of anti-seepage composite geotextile - Google Patents

Abstract

The utility model discloses an anti-seepage composite geotextile, which belongs to the technical field of geotechnical materials for hydraulic engineering. It comprises: a composite fiber layer and a first geotextile layer respectively arranged on the upper and lower layers of the composite fiber layer, the composite fiber layer and the two first geotextile layers are sewn together by polyester fiber threads; The polyethylene terephthalate fiber layer, the second geotextile layer, and the polypropylene fiber layer are secured by sutures. The anti-seepage composite geotextile of the utility model has the characteristics of good adaptability to deformation, high puncture resistance and high anti-cylindrical strength, and has the characteristics of high tensile strength, tear resistance and high-speed water erosion resistance, thereby improving the geotechnical performance. The material has soil-preserving performance; and its water permeability coefficient is small, so it has excellent impermeability and water resistance, and also has the advantages of excellent impact resistance and acid and alkali resistance.

Description

A kind of anti-seepage composite geotextile

technical field

The utility model relates to the technical field of geotechnical materials for hydraulic engineering, in particular to an anti-seepage composite geotextile.

Background technique

Because geotechnical materials have the advantages of light weight, good flexibility, high strength, strong integrity and non-perishability, they have the functions of reverse filtration, drainage, isolation, reinforcement and anti-seepage in engineering, which can improve the quality of engineering, so they are widely used in water conservancy projects. , water transport, highway, construction and other engineering fields. However, the current geotechnical anti-seepage materials have problems such as low tensile strength, weak puncture resistance, poor resistance to high-speed water erosion, poor soil retention, poor anti-seepage ability, and short service life, which cannot meet the requirements of anti-seepage geotechnical engineering in various projects. high demand for cloth.

Utility model content

The purpose of this utility model is to provide a kind of anti-seepage composite geotextile, so as to solve the problem of low tensile strength, low puncture resistance, poor anti-high-speed water scouring ability, poor soil retention and anti-seepage ability of existing geotechnical anti-seepage materials Bad question.

The technical scheme that the utility model solves the above-mentioned technical problem is as follows:

An anti-seepage composite geotextile, comprising: a composite fiber layer and a first geotextile layer respectively arranged on the upper and lower layers of the composite fiber layer, and the composite fiber layer and the two first geotextile layers are sewn together by polyester fiber threads;

The composite fiber layer includes a polyethylene terephthalate fiber layer, a second geotextile layer and a polypropylene fiber layer, a polyethylene terephthalate fiber layer, a second geotextile layer and a polypropylene fiber layer arranged in sequence The fibrous layer is secured with sutures.

Further, in a preferred embodiment of the present utility model, the inner side of the first geotextile layer is provided with a plurality of inner hooks, and the polyester fiber threads pass through the inner hooks to sew the two first geotextile layers and the composite fiber layer respectively. .

Further, in a preferred embodiment of the present invention, the above-mentioned polyester fiber threads are stitched symmetrically and continuously in a zigzag shape.

Further, in a preferred embodiment of the present utility model, geotextiles are respectively provided between the polyethylene terephthalate fiber layer and the second geotextile layer, the polypropylene fiber layer and the second geotextile layer. The grid layer, the geogrid layer is a network structure formed by a plurality of flexible grid bars.

Further, in a preferred embodiment of the present invention, the intersections of the grid bars are fixed and connected by fixing nails.

Further, in a preferred embodiment of the present invention, the above-mentioned polyethylene terephthalate fiber layer is a woven structure composed of a plurality of polyethylene terephthalate strips, and the polypropylene fiber layer is composed of multiple polyethylene terephthalate strips. Woven structure composed of polypropylene fiber strips.

Further, in a preferred embodiment of the present invention, the width of the polyethylene terephthalate strip used in the polyethylene terephthalate fiber layer is 1mm-5mm; The polypropylene strip width is also 1mm-5mm.

Further, in a preferred embodiment of the present invention, the thickness of the polyethylene terephthalate fiber layer and the polypropylene fiber layer is 0.2-10 mm.

Further, in a preferred embodiment of the present invention, the first geotextile layer and the second geotextile layer both include polyester geotextiles or polyamide geotextiles.

The utility model has the following beneficial effects:

1. The anti-seepage composite geotextile of the present utility model has the characteristics of good adaptability to deformation, high puncture resistance and high anti-cylindrical strength, and high tensile strength, tear resistance and high-speed water erosion resistance, And it has good impact resistance, acid and alkali resistance, impermeability and water resistance.

2. The composite fiber layer of the present utility model adopts the polyethylene terephthalate fiber layer with good adaptability to deformation, high puncture resistance and high anti-cylindrical strength, which can well improve the tensile resistance of the geotextile. Strength, tear strength and resistance to high-speed water erosion, thereby improving the soil-holding performance of geotechnical materials.

3. The polypropylene fiber layer used in the composite fiber layer of the present utility model has high strength, impact resistance, acid and alkali resistance, and good water resistance, and the composite geotextile has good waterproof and anti-penetration properties, and prolongs the service life of the geotextile. .

4. The anti-seepage composite geotextile of the present invention adopts the grid rod of flexible material, which can not only ensure the flexibility of the geocomposite fabric, but also improve its strength and tensile capacity.

5. The utility model adopts polyester fiber thread to sew the composite fiber layer and the two first geotextile layers, so that the three can be bonded firmly and firmly, and its service life can be guaranteed, and the polyester fiber thread can strengthen the overall structure of the composite geotextile. Tensile strength, tear strength and deformation resistance.

Description of drawings

Fig. 1 is the structure exploded diagram of the anti-seepage composite geotextile of the present utility model;

FIG. 2 is a schematic view of the structure of one side of the anti-seepage composite geotextile of the present invention.

In the figure: 100-composite fiber layer; 110-polyethylene terephthalate fiber layer; 120-second geotextile layer; 130-polypropylene fiber layer; 140-geogrid layer; 141-grid bar ; 142-fixing nail; 200-first geotextile layer; 210-inner hook; 300-polyester fiber thread; 400-suture thread.

Detailed ways

The principles and features of the present invention will be described below with reference to the accompanying drawings, and the examples are only used to explain the present invention, and are not intended to limit the scope of the present invention.

Example

1, the anti-seepage composite geotextile of the present invention includes: a composite fiber layer 100 and a first geotextile layer 200. The first geotextile layer 200 is respectively arranged on the upper and lower layers of the composite fiber layer 100. The composite fiber layer The 100 and the two first geotextile layers 200 are sewn together by polyester fiber threads 300 . The first geotextile layer 200 includes polyester geotextile or polyamide geotextile and the grammage of the geotextile is 100 m ² /g-400 m ² /g. The inner side of the first geotextile layer 200 is provided with a plurality of inner hooks 210, and the polyester fiber threads 300 pass through the inner hooks 210 to sew the two first geotextile layers 200 and the composite fiber layer 100 respectively. The fiber thread 300 is zigzag symmetrical and continuous stitching, which may be firmly attached to the three, which can ensure its service life, and the polyester fiber thread 300 can enhance the overall tensile strength, tear strength and resistance of the composite geotextile. deformability.

Referring to FIG. 1, the composite fiber layer 100 includes a polyethylene terephthalate fiber layer 110, a second geotextile layer 120 and a polypropylene fiber layer 130 arranged in sequence, and the polyethylene terephthalate fiber layer 110 , the second geotextile layer 120 and the polypropylene fiber layer 130 are secured by sutures 400 . The polyethylene terephthalate fiber layer 110 is a woven structure composed of a plurality of polyethylene terephthalate strips, and the polyethylene terephthalate fiber layer 110 adopts polyethylene terephthalate. The width of the glycol ester strip is 1mm-5mm, and the polyethylene terephthalate fiber layer 110 has high impact strength, which can well improve the tensile strength and water erosion resistance of the geotextile, thereby improving the soil conservation of the geotextile. performance. The polypropylene fiber layer 130 is a woven structure composed of a plurality of polypropylene fiber strips. The polypropylene fiber layer 130 adopts a polypropylene strip width of 1mm-5mm, and the adopted polypropylene fiber layer 130 has high strength, impact resistance and acid resistance. Alkali, good waterproof, can. The composite geotextile has good water and permeability resistance and prolongs the service life of the geotextile. When the polyethylene terephthalate fiber layer 110 and the polypropylene fiber layer 130 of the woven structure are impacted by water and soil particles, their stress points can be dispersed, and the force is more uniform, so they are resistant to water and soil particles. The effect is more obvious. In this embodiment, the thickness of the polyethylene terephthalate fiber layer 110 and the polypropylene fiber layer 130 is 0.2-10 mm. The polyethylene terephthalate fiber layer 110 and the polypropylene fiber layer 130 have a gram weight of 100m ² /g-400m ² /g, and the polyethylene terephthalate fiber layer 110 and the polyethylene terephthalate fiber layer 110 and In the case of the polypropylene fiber layer 130, the greater the gram weight, the greater the density of the woven polyethylene terephthalate strip, and the better the corresponding impact resistance. The second geotextile layer 120 includes polyester geotextile or polyamide geotextile and the grammage of the geotextile is 100 m ² /g-400 m ² /g.

Please refer to FIGS. 1 and 2 , between the polyethylene terephthalate fiber layer 110 and the second geotextile layer 120 , the polypropylene fiber layer 130 and the second geotextile layer 120 are respectively provided with a geogrid layer 140. The geogrid layer 140 of the mesh structure has better tensile capacity, which can improve the tensile capacity and strength of the entire geotextile. The geogrid layer 140 is a mesh structure formed by crossing a plurality of flexible grid bars 141 , and the intersections of the grid bars 141 are fixed and connected by fixing nails 142 . The fixing nails 142 fix the intersecting grid rods 141 , and using the fixing nails 142 as a fulcrum can improve the tensile capacity of the geogrid layer 140 through the interaction of the grid rods 141 .

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (9)

1. An impermeable composite geotextile, comprising: the composite fiber layer (100) and the first geotextile layers (200) respectively arranged at the upper layer and the lower layer of the composite fiber layer (100) are sewed into a whole through polyester fiber threads (300);

the composite fiber layer (100) comprises a polyethylene terephthalate fiber layer (110), a second geotextile layer (120) and a polypropylene fiber layer (130) which are sequentially arranged, wherein the polyethylene terephthalate fiber layer (110), the second geotextile layer (120) and the polypropylene fiber layer (130) are fixed through a suture (400).

2. The impermeable composite geotextile of claim 1, wherein the first geotextile layer (200) is provided at the inner side thereof with a plurality of inner hooks (210), and the polyester fiber thread (300) is passed through the inner hooks (210) to sew the first geotextile layer (200) and the composite geotextile layer (100), respectively.

3. The impermeable composite geotextile of claim 2, wherein the polyester fiber thread (300) is sewn in a zigzag symmetric continuity.

4. The impermeable composite geotextile of claim 1, wherein a geogrid layer (140) is further disposed between the polyethylene terephthalate fiber layer (110) and the second geotextile layer (120), and between the polypropylene fiber layer (130) and the second geotextile layer (120), respectively, and the geogrid layer (140) is a mesh structure formed by crossing a plurality of flexible geogrid rods (141).

5. The impermeable composite geotextile of claim 4, wherein the intersections of the grid rods (141) are fixed and connected by fixing nails (142).

6. The impermeable composite geotextile of any of claims 1-5, wherein the polyethylene terephthalate fiber layer (110) is a woven structure of a plurality of polyethylene terephthalate strips, and the polypropylene fiber layer (130) is a woven structure of a plurality of polypropylene fiber strips.

7. The impermeable composite geotextile of claim 6, wherein the polyethylene terephthalate fiber layer (110) employs polyethylene terephthalate strips having a width of 1mm to 5 mm; the width of the polypropylene strip adopted by the polypropylene fiber layer (130) is also 1mm-5 mm.

8. The impermeable composite geotextile of claim 6, wherein the polyethylene terephthalate fiber layer (110) and the polypropylene fiber layer (130) have a thickness of 0.2 to 10 mm.

9. The impermeable composite geotextile of claim 6, wherein the first geotextile layer (200) and the second geotextile layer (120) each comprise a polyester geotextile or a polyamide geotextile.

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