Sand and wind barrier using geosynthetic fabric

Abstract

The application discloses a geosynthetic fabric for sand and wind prevention, which is woven by warp yarns and weft yarns, and comprises a bottom sand prevention area and a middle-high part wind prevention area. The bottom sand prevention area is of a plain weave structure, the open hole rate of the bottom sand prevention area is 12%-18%, and the pore size of the bottom sand prevention area is 0.2-0.4 mm. The middle-high part wind prevention area is of a rough fabric structure, the open hole rate of the middle-high part wind prevention area is 40%-60%, and the pore size of the middle-high part wind prevention area is greater than or equal to 0.5 mm. The geosynthetic fabric for sand and wind prevention can simultaneously meet the requirements of strong wind and sand erosion near the ground surface and wind and sand flow dredging in the middle-high part through a specific weave structure, has a long service life and good sand prevention effect.

Description

Technical Field

[0001] This utility model relates to the field of synthetic fabric technology, and in particular to geosynthetic fabrics for sand blocking and wind protection. Background Technology

[0002] With continuous economic progress, highway infrastructure construction has flourished and is gradually extending into desert regions. Constructing desert highway infrastructure is crucial for facilitating economic development and energy utilization. Desert highways, located in sparsely vegetated, arid, and semi-arid areas, are frequently subjected to sandstorms during operation and construction. Desert highway construction may encounter various difficulties due to wind erosion and sand burial.

[0003] In existing technologies, geotextiles mostly adopt a uniform and simple structural design. In terms of porosity, geotextiles with too low porosity are prone to excessive wind resistance and are easily damaged by wind and sand impact, while geotextiles with too high porosity are prone to insufficient sand blocking effect. Utility Model Content

[0004] This application provides a geosynthetic fabric for sand blocking and windbreak, which can adapt to the needs of strong wind and sand erosion near the ground surface and wind and sand flow diversion in the middle and high parts of the ground through a specific organizational structure. It has a long service life and good sand blocking effect.

[0005] This application provides a geosynthetic fabric for sand blocking and wind protection, woven from warp and weft yarns. The geosynthetic fabric includes a bottom sand blocking zone and a middle and upper wind protection zone. The bottom sand blocking zone has a plain weave structure with a porosity of 12%-18% and a pore size of 0.2-0.4 mm. The middle and upper wind protection zone has an uneven fabric structure with a porosity of 40%-60% and a pore size greater than or equal to 0.5 mm.

[0006] In one possible implementation, the geosynthetic fabric further includes spaced reinforcing strips.

[0007] In one possible implementation, the reinforcing strips are arranged in a cross shape.

[0008] In one possible implementation, the spacing between the reinforcing strips is 0.5m-2m, and the width of the reinforcing strips is 5cm-50cm.

[0009] In one possible implementation, the reinforcing strip has a striking color.

[0010] In one possible implementation, the uneven fabric structure is a honeycomb weave or a rabbet weave.

[0011] In one possible implementation, the warp yarn is a polypropylene monofilament with a linear density of 600 dtex-6000 dtex, a breaking strength of not less than 5.5 cN / dtex, and a breaking elongation of 15%-20%.

[0012] In one possible implementation, the weft yarn is a polypropylene split-film filament, the breaking strength of which is not less than 6 cN / dtex and the breaking elongation is 10%-12%.

[0013] Beneficial effects: Compared with the prior art, the geosynthetic fabric for sand blocking and wind protection provided in this application can form a significantly different structure by combining the bottom sand blocking zone with a relatively tight bottom and low porosity and the middle and high wind protection zone with a textured structure and high porosity. This allows the geosynthetic fabric to meet the needs of strong wind and sand erosion near the ground surface and wind and sand flow diversion in the middle and high parts. It can not only expand the protection range and have a good sand blocking effect, but also extend the service life and reduce long-term maintenance costs.

[0014] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of this application is shown.

[0016] Attached diagram labels: 1-bottom sand-blocking zone, 2-mid-high wind-proof zone, 3-reinforcing strip. Detailed Implementation

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0018] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0019] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0020] Desert highways located in sparsely vegetated, arid, and semi-arid regions are frequently subjected to sandstorms during operation and construction. Desert highway construction may encounter various difficulties due to wind and sand problems, such as wind erosion and sand burial. We found that the characteristics of wind and sand action differ significantly at different altitudes in the desert. Near the surface, the concentration of windblown sand is high and the impact is strong, while in the mid-to-high altitude areas, the primary need is for airflow channeling.

[0021] Based on this, embodiments of this application provide a geosynthetic fabric for sand and wind protection, woven from warp and weft yarns. The warp and weft yarns can be woven using different fabric weave structures or alternately woven to form fabric surfaces with differentiated functions. (Reference) Figure 1 The geosynthetic fabric is divided into a bottom sand-blocking zone 1 and a middle and high wind-proof zone 2 according to the height requirements of the high vertical sand barrier. The bottom sand-blocking zone 1 has a plain weave structure, or a square plain weave structure, or a 2 / 2 twill weave structure, and uses a fabric structure with a low porosity. The porosity of the bottom sand-blocking zone 1 is 12%-18%, and the pore size of the bottom sand-blocking zone 1 is 0.2-0.4mm, which corresponds to the height range of 0-1m of the high vertical sand barrier (in contact with the desert ground and near the ground surface area), resulting in good sand-blocking effect. The middle and high windproof zone 2 has an uneven fabric structure, corresponding to the height range of 1m or more of the upright sand barrier. Specifically, it can adopt a honeycomb or other varied weave structure. That is, the uneven fabric structure is a honeycomb weave structure or a mountain-shaped weave structure. The uneven texture is formed by the staggered height of the warp and weft yarns. At the same time, the porosity of the middle and high windproof zone 2 is 40%-60%, and the pore size of the middle and high windproof zone 2 is greater than or equal to 0.5mm. The uneven structure can disrupt the movement trajectory of the wind and sand flow, weaken the airflow intensity, and reduce the overall wind resistance of the sand barrier through reasonable porosity, so as to avoid the impact damage of strong winds on the fabric.

[0022] Therefore, the geosynthetic fabric for sand blocking and wind protection provided in this application can meet the needs of strong wind and sand erosion near the ground surface and wind and sand flow diversion in the middle and high parts of the ground. It can not only expand the protection range and have a good sand blocking effect, but also extend the service life and reduce long-term maintenance costs.

[0023] In one embodiment, the geosynthetic fabric further includes spaced reinforcing strips 3, wherein the reinforcing strips 3 can be implemented by increasing the number of yarns or changing the linear density, in order to increase the structural strength of the geosynthetic fabric and enhance the structural stability of the fabric against wind and sand impact.

[0024] In one embodiment, the reinforcing strips 3 are distributed in a cross shape, and a "cross-shaped" reinforcing node can be formed at the intersection of the latitude and longitude reinforcing strips 3 to effectively disperse the wind and sand impact load.

[0025] In one embodiment, the spacing between the reinforcing strips 3 is 0.5m-2m. The width of the reinforcing strip is 5cm-50cm.

[0026] In one embodiment, the reinforcing strip 3 has a striking color, such as fluorescent yellow, which is different from the body color of the geosynthetic fabric and serves as a reflective warning.

[0027] In one embodiment, the warp yarn is a polypropylene monofilament with a linear density of 600 dtex-6000 dtex, a breaking strength of not less than 5.5 cN / dtex, and a breaking elongation of 15%-20%, exhibiting good flexibility and reducing the risk of brittle fracture under wind and sand impact.

[0028] In one embodiment, the weft yarn is a polypropylene split-film filament, and the tensile strength of the polypropylene split-film filament is not less than 6 cN / dtex, the elongation at break is 10%-12%, and it has good flexibility, which can reduce the risk of brittle fracture under wind and sand impact.

[0029] It should be noted that the terms "first" and "second" used in this application are for descriptive purposes only and do not indicate any order. They should not be construed as indicating or implying relative importance, and can be interpreted as names.

[0030] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A geosynthetic fabric for sand blocking and windproofing, woven from warp and weft yarns, characterized in that... The geosynthetic fabric includes a bottom sand-blocking zone and a middle and upper wind-proof zone. The bottom sand-blocking zone has a plain weave structure, a porosity of 12%-18%, and a pore size of 0.2-0.4 mm. The middle and upper wind-proof zone has an uneven fabric structure, a porosity of 40%-60%, and a pore size greater than or equal to 0.5 mm.

2. The geosynthetic fabric for sand blocking and windproofing as described in claim 1, characterized in that, The geosynthetic fabric also includes spaced reinforcing strips.

3. The geosynthetic fabric for sand blocking and windproofing as described in claim 2, characterized in that, The reinforcing strips are distributed in a cross shape.

4. The geosynthetic fabric for sand blocking and windproofing as described in claim 2 or 3, characterized in that, The spacing between the reinforcing strips is 0.5m-2m, and the width of the reinforcing strips is 5cm-50cm.

5. The geosynthetic fabric for sand blocking and windproofing as described in claim 4, characterized in that, The reinforcing strip has a striking color.

6. The geosynthetic fabric for sand blocking and windproofing as described in claim 1, characterized in that, The uneven fabric structure is a honeycomb weave structure or a rabbet weave structure.

7. The geosynthetic fabric for sand blocking and windproofing as described in claim 1, characterized in that, The warp yarn is a polypropylene monofilament with a linear density of 600 dtex-6000 dtex, a breaking strength of not less than 5.5 cN / dtex, and a breaking elongation of 15%-20%.

8. The geosynthetic fabric for sand blocking and windproofing as described in claim 7, characterized in that, The weft yarn is a polypropylene split-film filament, and the breaking strength of the polypropylene split-film filament is not less than 6 cN / dtex, and the breaking elongation is 10%-12%.

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