Round brush-shaped net rope type sand barrier and photovoltaic desertification control system

Abstract

The invention discloses a round brush-shaped net rope type sand barrier and a photovoltaic desertification control system. The round-brush-shaped net rope type sand barrier comprises a consolidation rope and a plurality of round-brush-shaped structures. And the plurality of round brush-shaped structures are fixedly combined on the consolidation rope and are densely arranged along the length direction of the consolidation rope. Compared with the prior art, the round-brush-shaped net rope type sand-protecting barrier takes the achnatherum splendens as a main raw material, so that the service life is prolonged, and the sand-protecting barrier is environment-friendly and renewable; due to the unique brush-shaped structural design and reasonable porosity distribution, the wind prevention and sand fixation effects are greatly improved; due to the diversified choices of the fixed connecting piece device, the cost is reduced, and the stability of the sand barrier is guaranteed; the application of the mechanical construction method provides an efficient implementation means for large-scale desertification control engineering.

Description

Technical Field

[0001] This application relates to the field of windbreak and sand control technology, and in particular to a circular brush-shaped net rope sand barrier and a photovoltaic sand control system. Background Technology

[0002] Desertification continues to threaten the ecological environment and human survival and development, making windbreak and sand fixation a core task of ecological governance. Currently, the most widely used windbreak and sand control measure is to make straw checkerboard sand barriers using materials such as wheat straw. However, this approach has several bottlenecks, such as: poor durability—wheat straw in arid areas is subject to triple degradation from ultraviolet radiation, wind erosion, and microorganisms, resulting in a lifespan of only 1-2 years and high maintenance costs due to frequent replacement; and depletion of material sources—modern agricultural mechanization harvests wheat straw into short pieces of 10-15 cm, which cannot meet the requirement of ≥40 cm long straw for checkerboard barriers, leading to a "material shortage" dilemma. Summary of the Invention

[0003] The main objective of this application is to provide a circular brush-shaped net rope sand barrier and photovoltaic desertification control system to overcome the shortcomings of the prior art.

[0004] To achieve the above-mentioned objectives, this application provides the following technical solution.

[0005] The first aspect of this application provides a circular brush-shaped net rope sand barrier, including a fixing rope and a plurality of circular brush-shaped structures; the plurality of circular brush-shaped structures are fixedly attached to the fixing rope and are densely arranged along the length direction of the fixing rope.

[0006] Among them, multiple circular brush-shaped structures are formed by spirally winding and fixing ropes around straw curtains. The straw curtains are woven from multiple reed stems as warp threads and two polymer threads as weft threads. The multiple reed stems are arranged in parallel and densely along the length of the straw curtains.

[0007] The reed stem is composed of a first segment, a second segment, and a third segment connected sequentially along its length. The first and third segments are symmetrically arranged on both sides of the second segment. The two converging lines are in contact with a first connection point and a second connection point, respectively. The first connection point is the connection point between the first and second segments, and the second connection point is the connection point between the second and third segments. The second segment is curled and tightly wrapped around the knotting rope. The first and third segments extend in different directions, and the angle between them and the knotting rope is 45° to 90°, thereby forming the bristles of the circular brush structure.

[0008] In one embodiment, the circular brush-shaped net rope sand barrier further includes auxiliary lines that are intertwined with the second segment and the fixing rope to keep the second segment in a curved shape and tightly bonded to the fixing rope. The auxiliary lines are made of a biodegradable material.

[0009] In one embodiment, the second segment is further bonded and secured to the knotting rope with a biodegradable adhesive.

[0010] In one embodiment, the diameter of the knotted rope is 2-5 cm.

[0011] In one embodiment, the knotted rope comprises at least two straw ropes spirally intertwined with each other.

[0012] In one embodiment, the binding rope further includes at least one seed rope, and at least two of the grass ropes are intertwined around the seed rope to form a spiral structure.

[0013] In one embodiment, the seed rope comprises multiple desert plant seeds, a core rope, and a shell layer. The core rope is formed by winding and twisting hemp fabric, and the multiple desert plant seeds are wrapped inside the core rope. The core rope is impregnated with an insect repellent. The shell layer is wrapped around the core rope, and a starch-grafted acrylic copolymer absorbent material is filled between the shell layer and the core rope. The shell layer is formed by winding hemp fabric.

[0014] In one embodiment, the length of the reed stem is 30-60 cm.

[0015] In one embodiment, the selection criteria for the reed stems are: robust growth, free from pests and diseases, moisture content below 15% after drying, and diameter of 0.3-0.5 cm.

[0016] Reed grass is a native plant of the Northwest desert. It has significant advantages such as long fiber (>50 cm), high tensile strength (180 MPa) and silicified cell anti-corrosion. It can be adapted to the rope integration process and give full play to the stress resistance characteristics of desert plants. It can be used continuously for many years, which is both environmentally friendly and economical, and has high promotion value.

[0017] In one embodiment, each of the circular brush-like structures comprises 10-20 reed stems.

[0018] In one embodiment, the spacing between the spiral windings of the straw curtain on the fixing rope is 1-5 cm.

[0019] In one embodiment, adjacent circular brush-like structures are placed close together.

[0020] In one embodiment, the surface of the knotted rope and / or the circular brush-like structure is coated with an environmentally friendly anti-mildew agent.

[0021] In one embodiment, the porosity of the portion of the circular brush-shaped net rope sand barrier excluding the bristles is 30%-60%.

[0022] A second aspect of this application provides a method for manufacturing the aforementioned brush-shaped net rope sand barrier, comprising:

[0023] Multiple seeds of desert plants are placed sequentially on the hemp fabric along its length. The hemp fabric is then rolled and twisted, soaked in an insect repellent, and then dried to obtain the core rope.

[0024] Place the core rope on the hemp fabric, and evenly spread starch-grafted acrylic copolymer absorbent material on the hemp fabric. Then, wrap the hemp fabric around the core rope to form a seed rope.

[0025] A knotted rope is made by intertwining at least two straw ropes around the seed rope as an axis to form a spiral structure.

[0026] A grass curtain is woven using multiple parallel and densely arranged reed stems as warp threads and two parallel polymer threads as weft threads. The reed stems are composed of a first segment, a second segment, and a third segment connected sequentially along the length direction. The first and third segments are symmetrically arranged on both sides of the second segment. The two polymer threads are in contact with a first connection point and a second connection point, respectively. The first connection point is the connection point between the first segment and the second segment, and the second connection point is the connection point between the second segment and the third segment.

[0027] The knotting rope is placed on the straw mat and brought into contact with the middle of the second segment of each reed stem. The straw mat is then rolled up so that the second segment of each reed stem is rolled up and tightly wrapped around the knotting rope. The first and third segments of each reed stem extend in different directions, thereby forming multiple brush-like structures.

[0028] A third aspect of this application provides a wind and sand control facility, comprising:

[0029] The grid sand barrier unit or the strip sand barrier unit is formed by laying multiple round brush sand barriers crosswise on the ground upwind of the protected object. The strip sand barrier unit is formed by laying one or more of the round brush sand barriers on the ground. The round brush sand barriers are the round brush-shaped net rope sand barriers.

[0030] The fixing mechanism includes one or more fixing rods, the lower part of which is inserted into the ground, and each of the circular brush-shaped net rope sand barriers is fixedly connected to at least one fixing rod at both ends and the middle part.

[0031] The fourth aspect of this application provides a photovoltaic desertification control system, including vertical reed sand barriers, folded reed sand barriers and ring sand barriers arranged at intervals along the prevailing wind direction;

[0032] The vertical reed sand barrier extends continuously in a direction perpendicular to the prevailing wind direction and includes a first reed curtain;

[0033] The folded reed sand barrier is arranged parallel to the vertical reed sand barrier and includes a second straw curtain, which is folded in half in the width direction and the folded part is inserted into the ground.

[0034] The annular sand barrier is set around the photovoltaic power generation facility and includes one or more annular structures or grid structures. The annular structure is formed by one or more circular sand barriers, and the grid structure is formed by multiple circular sand barriers arranged in a cross pattern. The photovoltaic power generation facility includes a photovoltaic support and a photovoltaic panel installed on the photovoltaic support. At least one set of the annular structure or grid structure is laid on the ground below the photovoltaic panel and surrounds the photovoltaic support, and the circular sand barriers therein are fixedly connected to the photovoltaic support.

[0035] The first and second straw curtains are both woven from multiple reed stems as warp and multiple composite yarns as weft. The multiple reed stems are arranged in parallel along the length of the straw curtain, with a density of 2 to 3 reed stems per centimeter. The lower part of the reed stems in the first straw curtain is inserted into the ground, while the middle and upper parts are exposed above the ground at a height of 60-80 cm. The height of the exposed part of the second straw curtain above the ground is 30-40 cm.

[0036] The circular brush sand barrier is a type of circular brush-shaped net rope sand barrier.

[0037] In one embodiment, the annular sand barrier includes multiple sets of annular structures or grid structures, which are concentrically arranged around the photovoltaic support, with adjacent annular structures or grid structures spaced apart.

[0038] In one embodiment, both the vertical and folded reed sand barriers are arranged in multiple sets; the multiple sets of vertical reed sand barriers are arranged at intervals along the prevailing wind direction and are parallel to each other; the multiple sets of folded reed sand barriers are arranged at intervals along the prevailing wind direction and are parallel to each other.

[0039] Compared with the prior art, the technical solution provided in the embodiments of this application has at least the following beneficial effects:

[0040] (1) The provided round brush-shaped net rope sand barrier uses reed grass as raw material. Reed grass is a native plant of the Gobi Desert region. It is widely available, inexpensive and easy to obtain. It is salt-alkali resistant and drought resistant. After anti-mildew and anti-corrosion treatment, it can further resist the erosion of the harsh desert environment, thus significantly extending the service life of the sand barrier. At the same time, the net rope sand barrier adopts a "round brush" structure. It uses grass curtains to form a fixed rope by curling and wrapping the warp threads in the middle. This makes the brush bristles (reed grass) and the round brush body (fixed rope) set up as one unit. The structure is firm and reliable, which solves the problem that grass material is easy to fall off and scatter in the existing grass grid or binding method, thus extending the service life of the sand barrier. Furthermore, by incorporating "seed ropes" inside the rope-type sand barrier, the strong hygroscopic properties of the reed grass and the porous structure of the rope-type sand barrier can be fully utilized to absorb and store rainwater or photovoltaic cleaning water, etc. Together with the sand and dust blocked and deposited inside the rope-type sand barrier, a microenvironment that can promote seed germination and growth can be formed. Based on the rope-type sand barrier, a plant community can be formed, realizing the transformation from "physical sand fixation" to "biological sand fixation".

[0041] (2) The method of making the circular brush-shaped net rope sand barrier provided ensures that the finished product has high structural strength through the winding and fixing process, which facilitates transportation and subsequent laying construction. The process is simple and the raw material utilization rate is high.

[0042] (3) The provided wind and sand control facilities adopt a "net-rope" layout, in which multiple sand barrier units are connected into an overall frame (grass grid structure) by tree branches or composite material clips. This overall structure can effectively resist strong winds and prevent individual sand barriers from being blown down or pulled out by the wind. It can be flexibly constructed into a grid, strip or ring structure according to the terrain requirements to adapt to the undulating sand dune landform.

[0043] (4) The provided photovoltaic desertification control system constructs a three-level protection system of "outer vertical sand blocking + middle folded sand fixation + core ring anti-erosion", which blocks most of the external flowing sand, increases the surface roughness, reduces secondary sand blowing, protects the outer sand barrier, and can specifically protect the area around the photovoltaic support pile foundation to prevent wind erosion (scouring) caused by the narrow tube effect and avoid the photovoltaic support from tilting. In addition, the system cleverly utilizes the washing water and rainwater collection of the photovoltaic panel surface to drip onto the circular brush-shaped net rope sand barrier (including seed rope) below, which solves the problem of water shortage for desert vegetation restoration and improves the survival rate. In the early stage, the physical structure of the sand barrier protects the photovoltaic facilities, and in the later stage, the plant community that grows fixes the flowing sand, which not only ensures the safe operation of the photovoltaic power station, but also improves the ecological environment of the photovoltaic field. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the brush-like net rope sand barrier structure of *Achnatherum gracile* in the embodiments of this application;

[0045] Figure 2 As in the embodiments of this application Figure 1 Cross-sectional diagram;

[0046] Figure 3 This is a schematic diagram of the knotted rope structure in an embodiment of this application;

[0047] Figure 4 This is a schematic diagram of the reed mat structure in the embodiments of this application;

[0048] Figure 5 This is a schematic diagram illustrating the formation of a grass grid sand barrier in the desert using the circular brush-shaped rope sand barrier in Example 1.

[0049] Figure 6 This is a schematic diagram of the overall protective system formed by laying the brush-like netting of reeds on both sides of the road in Application Example 2.

[0050] Figure 7 This is a schematic diagram of how the brush-like netting of reeds is laid on the photovoltaic base to form a protective system, as shown in Application Example 3.

[0051] Figure 8 This is a schematic diagram of the protective system formed by laying the brush-like netting of reeds on the photovoltaic base in Application Example 4.

[0052] Explanation of reference numerals in the attached figures

[0053] 100, Reed brush-like unit; 200, Fixed rope; 201, Straw rope one; 202, Straw rope two; 300, Reed; 301, Aggregate line. Detailed Implementation

[0054] This application provides a fan-shaped brush-like net rope sand barrier structure suitable for desert management and windbreak and sand fixation, its manufacturing method, and a sand-blocking and sand-fixing system for photovoltaic power generation areas, which solves the problems of poor stability, poor weather resistance, and low laying efficiency of existing grass checkerboard sand barrier structures.

[0055] Specifically, such as Figures 1-4 As shown, one embodiment of this application provides a circular brush-shaped rope sand barrier including a fixing rope 200 and a plurality of circular brush-shaped structures 100. The plurality of circular brush-shaped structures 100 are fixedly attached to the fixing rope 200 and are densely arranged along the length direction of the fixing rope 200.

[0056] The multiple circular brush-like structures 100 are formed by spirally winding and securing the straw curtain with rope 200. The straw curtain is woven from multiple reed stems 300 as warp threads and two bonding yarns 301 as weft threads. The multiple reed stems 300 are arranged in parallel and densely along the length of the straw curtain. The arrangement density of the reed stems 300 can be 2-3 stems / cm.

[0057] The reed stem 300 is composed of a first segment, a second segment, and a third segment connected sequentially along its length, with the first and third segments symmetrically arranged on both sides of the second segment. Two converging lines 301 contact the first connection point and the second connection point, respectively. The first connection point is the connection point between the first and second segments, and the second connection point is the connection point between the second and third segments. The second segment curls up and tightly wraps around the fixing rope 200. The first and third segments extend in different directions, and the angle between them and the fixing rope 200 is 45° to 90° (preferably around 90°), thus forming the bristles of the circular brush-like structure 100.

[0058] In this embodiment, the selection criteria for the reed stems 300 are: robust growth, freedom from pests and diseases, moisture content below 15% after drying, and a diameter of 0.3-0.5 cm. The length of the reed stems 300 can be set to 30-60 cm. The spiral winding spacing of the straw mat on the fixing rope 200 can be set to 1-5 cm.

[0059] In a preferred embodiment, adjacent circular brush-like structures 100 are in close contact with each other. Each circular brush-like structure 100 contains 10-20 reed stems 300. The porosity of the remaining portion of the circular brush-like net-like sand barrier, excluding the bristles, is 30%-60%.

[0060] Furthermore, environmentally friendly anti-mildew agents (such as 3%-5% sodium diacetate solution and other inorganic salt solutions, chitosan anti-mildew agents, Bacillus subtilis preparations, white rot fungus fermentation liquid, etc.) can be coated on the surface of the fixed rope 200 and the circular brush structure 100 to give the circular brush net rope sand barrier anti-mildew and anti-corrosion properties and extend its service life.

[0061] Preferredly, one or more of the following can be soaked in animal-repellent agents such as wood vinegar, MA crude oil, and MP crude oil, then dried, and finally sprayed with an environmentally friendly anti-mildew agent.

[0062] In this embodiment, the circular brush-shaped rope sand barrier utilizes straw curtains to form a circular brush-shaped structure by curling and wrapping the central warp threads of the rope. The process is simple, the bristles are integrated with the main body of the circular brush, making them less prone to falling off. This also reduces or avoids disorderly crossing between the bristles, increases the sand storage space within the circular brush, and allows each bristle to have a larger surface area to fully contact the wind and sand, thereby effectively improving the sand-blocking and sand-fixing effect. At the same time, it also makes the structure of the main body of the circular brush compact and sturdy, increasing its service life. In addition, the tension generated by the curling of the middle section (second section) of the reed stem can be used to enable the first and third sections that make up the bristles to maintain an upright state under wind and sand blowing and / or quickly return to an upright state after wind and sand blowing, maintaining a good wind-blocking and sand-blocking function.

[0063] In one embodiment, the circular brush-shaped net rope sand barrier may further include auxiliary lines that are intertwined with the second segment and the fixing rope 200 to maintain the curved shape of the second segment and ensure a tight bond with the fixing rope 200. The auxiliary lines are made of biodegradable material. In this embodiment, the auxiliary lines can be made directly from plant stems such as straw, or from ropes or threads made from plant fibers or biodegradable materials such as polylactic acid or bio-based polyurethane.

[0064] Optionally, the second section is further bonded and secured to the fixing rope 200 with a biodegradable adhesive. The biodegradable adhesive can be various animal glues, plant glues, starch, modified starch, etc. This further enhances the overall structural stability of the circular brush-shaped net rope sand barrier.

[0065] In one embodiment, the fixing rope 200 has a diameter of 2-5 cm and its material must have good weather resistance and abrasion resistance to ensure stable fixation of the reed brush-like units in windy and sandy environments. Exemplarily, the fixing rope 200 includes at least two straw ropes that are spirally intertwined. The straw ropes can be formed from straw or similar materials using traditional processing methods.

[0066] In a preferred embodiment, the binding rope 200 may further include at least one seed rope and at least two grass ropes intertwined around the seed rope as an axis to form a spiral structure. The intertwining of multiple grass ropes around the seed rope has several advantages: firstly, it further enhances the overall structural strength of the circular brush-shaped net rope sand barrier; secondly, it provides multiple layers of protection for the seed rope in conjunction with the grass curtain, preventing premature exposure of the seeds to the environment and preventing easy detection and damage by rodents, insects, etc.; and thirdly, it forms a multi-layered porous structure with better water absorption and storage capacity, which is more conducive to promoting seed germination and growth.

[0067] Preferably, the seed rope comprises multiple psammophytic plant seeds, a core rope, and a shell layer. The core rope is formed by winding and twisting hemp fabric, and the multiple psammophytic plant seeds are wrapped inside the core rope. The core rope is impregnated with an insect repellent. The shell layer wraps around the core rope, and a starch-grafted acrylic copolymer absorbent material is filled between the shell layer and the core rope. The shell layer is formed by winding hemp fabric. Using hemp fabric to form the core rope and shell layer gives the seed rope good tensile strength and flexibility, while also giving the seed rope a porous structure that facilitates water absorption and storage. Impregnating the core rope with an insect repellent can effectively repel animals, and this method can also prevent the insect repellent from evaporating or being lost too quickly, achieving a long-term insect repellent effect. By filling with absorbent material, the core rope and shell layer can be bonded together, improving the structural strength of the seed rope, and utilizing the water-absorbing material's ability to absorb water and form a hydrogel, the water storage performance of the seed rope is enhanced.

[0068] like Figures 1-4 As shown in the figure, this embodiment also provides a method for manufacturing a circular brush-shaped net rope sand barrier, including the following steps:

[0069] S1. Place multiple seeds of psammophytic plants sequentially along the length of a hemp cloth, then roll and twist the hemp cloth, soak it in an insect repellent, and then dry it to obtain a core rope. The aforementioned seeds can be drought-resistant plant seeds such as sea buckthorn, saxaul, and artemisia, and the seed density can be 5-15 seeds / 10cm.

[0070] S2. Place the core rope on a hemp fabric, and evenly spread a starch-grafted acrylic copolymer absorbent material on the hemp fabric. Then, roll the hemp fabric around the core rope to form a seed rope. Under suitable climatic conditions, these materials absorb water and slowly decompose. The decomposition products can serve as nutrients needed for plant growth, promoting seed germination and root development. Over time, these seeds can gradually grow into vegetation, forming a stable windbreak and sand-fixing plant community, fundamentally improving the ecological environment.

[0071] S3. At least two straw ropes are intertwined around the seed rope to form a spiral structure, thus producing a fixed rope 200. In some cases, a biodegradable adhesive can be applied between the straw rope and the seed rope to more effectively prevent the seed rope and straw rope from falling off during transportation, laying, and wind and sand impact. The biodegradable adhesive can be a natural adhesive or a biodegradable synthetic adhesive, such as starch adhesive, gelatin, plant gums (such as gum arabic, xanthan gum, peach gum, etc.), chitosan, hyaluronic acid, sodium alginate, collagen, various types of cellulose or their salts, etc. Starch adhesive (such as modified pregelatinized starch) is preferred, as it not only has strong adhesion but can also form a hydrogel, improving the water retention performance of the rope-type sand barrier.

[0072] S4. Using multiple parallel and densely arranged reed stems 300 as warp threads and two parallel arranged ligature threads 301 as weft threads, a grass curtain is woven. The reed stems 300 are composed of a first segment, a second segment, and a third segment connected sequentially along the length direction. The first segment and the third segment are symmetrically arranged on both sides of the second segment. The two ligature threads 301 are in contact with the first connection point and the second connection point, respectively. The first connection point is the connection point between the first segment and the second segment, and the second connection point is the connection point between the second segment and the third segment.

[0073] S5. Place the knotted rope 200 on the straw mat and make the knotted rope 200 contact the middle of the second segment of each reed stem 300. Then roll up the straw mat so that the second segment of each reed stem 300 is rolled up and tightly wrapped around the knotted rope 200, and make the first and third segments of each reed stem 300 extend in different directions to form multiple brush-like structures.

[0074] like Figure 5As shown, this embodiment also provides a wind and sand control facility, including a grid sand barrier unit or a strip sand barrier unit and a fixing mechanism. The grid sand barrier unit is formed by multiple round brush sand barriers laid crosswise on the ground upwind of the protected object. The strip sand barrier unit is formed by one or more of the round brush sand barriers laid on the ground. The round brush sand barriers are the round brush-shaped net rope sand barriers in this embodiment.

[0075] The fixing mechanism includes multiple fixing rods, the lower part of which is inserted into the ground. Each of the circular brush-shaped net rope sand barriers is fixedly connected to at least one fixing rod at both ends and in the middle. The fixing rods can be metal rods, plastic rods, bamboo poles, tree branches, etc., preferably wind-resistant and sand-resistant tree branches.

[0076] For example, such as Figure 6 As shown, brush-like netting made of reeds can be laid on both sides of the road to form a road protection system. In some cases, 10-12 meter long brush-like netting ropes can be connected to each other to achieve the required length and installed parallel to the roadbed edge on both sides of the road. Multiple ropes can be installed in parallel as needed, with movable connection points set at intervals, and fixed using tree branches.

[0077] like Figure 7 and Figure 8 As shown in the embodiment of this application, a photovoltaic desertification control system is also provided, including vertical reed sand barriers, folded reed sand barriers and ring sand barriers arranged at intervals along the prevailing wind direction;

[0078] The vertical reed sand barrier extends continuously in a direction perpendicular to the prevailing wind direction and includes a first reed curtain;

[0079] The folded reed sand barrier is set parallel to the upright reed sand barrier and includes a second straw curtain. The second straw curtain is folded in half from the middle in the width direction and the fold is inserted into the ground.

[0080] The annular sand barrier is set up around the photovoltaic power generation facility and includes one or more annular structures or grid structures. The annular structure is formed by one or more round brush sand barriers, and the grid structure is formed by multiple round brush sand barriers arranged in a cross pattern. The photovoltaic power generation facility includes a photovoltaic support and a photovoltaic panel installed on the photovoltaic support. At least one annular structure or grid structure is laid on the ground below the photovoltaic panel and surrounds the photovoltaic support. The round brush sand barriers therein are fixedly connected to the photovoltaic support by ropes or the like.

[0081] Both the first and second straw curtains are woven from multiple reed stems as warp and multiple weft threads. The reed stems are arranged in parallel along the length of the curtain, with a density of 2-3 stems per centimeter. The lower part of the reed stems in the first curtain, about 20-40 cm long, is inserted into the ground, while the middle and upper parts are exposed above the ground at a height of 60-80 cm. The second straw curtain is inserted into the ground for about 20-40 cm, and the exposed part is 30-40 cm high.

[0082] Preferably, the annular sand barrier can include multiple sets of annular or grid structures, concentrically arranged around the photovoltaic support, with adjacent annular or grid structures spaced apart. This arrangement provides multiple layers of protection for the photovoltaic power generation facility and can utilize accumulated sand and rainwater / photovoltaic panel washing water to promote seed growth within the seed ropes, forming a plant community around the photovoltaic power generation facility, thus achieving a synergistic and integrated approach to physical and biological sand control.

[0083] Optionally, both the vertical and folded reed sand barriers are set in multiple groups; the multiple groups of vertical reed sand barriers are set at intervals along the prevailing wind direction and are parallel to each other; the multiple groups of folded reed sand barriers are set at intervals along the prevailing wind direction and are parallel to each other; by setting up multiple groups of vertical reed sand barriers, multiple sand-blocking and sand-fixing effects can be achieved.

[0084] In some more specific implementation schemes, vertical reed sand barriers can be made mainly from the main stem segments of reeds. After the main stem segments of reeds are cut neatly, they are woven by a weaving machine or placed directly to form reed mats. The thickness of the mats can be controlled to be about 1 cm.

[0085] Foldable reed sand barriers can be made primarily from the top tips of reeds. These tips are neatly cut and then woven using a weaving machine or simply laid out to form a reed mat. To facilitate folding, the reed tips can be softened by: either by rolling them down or by spraying them with water and storing them for a period of time to allow them to absorb moisture and soften.

[0086] In this embodiment, by sequentially distributing the annular sand barrier, the folded reed sand barrier, and the upright reed sand barrier in a direction away from the photovoltaic power generation facility, a multi-layered sand-blocking and stabilizing system with a high degree of gradient distribution can be formed. This allows most of the sand particles to be stopped and settled by the upright reed sand barrier, then the folded reed sand barrier to reduce secondary sand blowing, and finally the annular sand barrier to further block and stabilize the sand, and prevent ground erosion under the photovoltaic power generation facility caused by wind erosion, thus avoiding problems such as the photovoltaic power generation facility failing to work properly or being damaged due to the collapse of the photovoltaic support.

[0087] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0088] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A circular brush-shaped net rope sand barrier, characterized in that, It includes a knotted rope (200) and a plurality of circular brush-shaped structures (100); the plurality of circular brush-shaped structures (100) are fixedly attached to the knotted rope (200) and are densely arranged along the length direction of the knotted rope (200); Among them, multiple circular brush-shaped structures (100) are formed by spirally winding and fixing ropes (200) around the grass curtain. The grass curtain is woven from multiple reed stems (300) as warp and two aggregated yarns (301) as weft. The multiple reed stems (300) are arranged in parallel and densely along the length of the grass curtain. The reed stem (300) is composed of a first segment, a second segment, and a third segment connected sequentially along its length. The first segment and the third segment are symmetrically arranged on both sides of the second segment. The two aggregate lines (301) are in contact with the first connection point and the second connection point, respectively. The first connection point is the connection point between the first segment and the second segment, and the second connection point is the connection point between the second segment and the third segment. The second segment is curled up and tightly wrapped around the knotted rope (200). The first segment and the third segment extend in different directions, and the angle between them and the knotted rope (200) is 45°~90°, thereby forming the bristles of the circular brush structure (100).

2. The circular brush-shaped net rope sand barrier according to claim 1, characterized in that: The circular brush-shaped net rope sand barrier also includes auxiliary lines, which are intertwined with the second section and the fixing rope (200) to keep the second section in a curved shape and tightly bonded to the fixing rope (200). The auxiliary lines are made of biodegradable material; and / or, the second section and the fixing rope (200) are also bonded and fixed with a biodegradable adhesive; and / or, the diameter of the fixing rope (200) is 2-5 cm.

3. The circular brush-shaped net rope sand barrier according to any one of claims 1-2, characterized in that: The knotted rope (200) comprises at least two straw ropes that are spirally intertwined with each other.

4. The circular brush-shaped net rope sand barrier according to claim 3, characterized in that, The knotted rope (200) also includes at least one seed rope, and at least two of the grass ropes are intertwined around the seed rope to form a spiral structure.

5. The circular brush-shaped net rope sand barrier according to claim 4, characterized in that: The seed rope comprises multiple desert plant seeds, a core rope, and a shell. The core rope is formed by winding and twisting hemp fabric, and the multiple desert plant seeds are wrapped inside the core rope. The core rope is impregnated with an insect repellent. The shell is wrapped around the core rope, and the space between the shell and the core rope is filled with a starch-grafted acrylic copolymer absorbent material. The shell is formed by winding hemp fabric.

6. The circular brush-shaped net rope sand barrier according to any one of claims 1, 3-5, characterized in that: The length of the *Achnatherum gracile* stems (300) is 30-60 cm; and / or, the selection criteria for the *Achnatherum gracile* stems (300) are robust growth, free from pests and diseases, with a moisture content of less than 15% after drying, and a diameter of 0.3-0.5 cm; and / or, each of the circular brush-shaped structures (100) contains 10-20 *Achnatherum gracile* stems (300); and / or, the spiral winding spacing of the straw mat on the fixing rope (200) is 1-5 cm; and / or, adjacent circular brush-shaped structures (100) are in close contact with each other; and / or, the surfaces of the fixing rope (200) and / or the circular brush-shaped structures (100) are coated with an environmentally friendly anti-mildew agent; and / or, the porosity of the remaining part of the circular brush-shaped net rope sand barrier, excluding the bristles, is 30%-60%.

7. The method for manufacturing a circular brush-shaped net rope sand barrier according to any one of claims 1-6, characterized in that, include: Multiple seeds of desert plants are placed sequentially on the hemp fabric along its length. The hemp fabric is then rolled and twisted, soaked in an insect repellent, and then dried to obtain the core rope. Place the core rope on the hemp fabric, and evenly spread starch-grafted acrylic copolymer absorbent material on the hemp fabric. Then, wrap the hemp fabric around the core rope to form a seed rope. At least two straw ropes are twisted together around the seed rope to form a spiral structure, thereby producing a knotted rope (200). A grass curtain is woven using multiple parallel and densely arranged reed stems (300) as warp threads and two parallel arranged ligature threads (301) as weft threads. The reed stems (300) are composed of a first segment, a second segment, and a third segment connected sequentially along the length direction. The first segment and the third segment are symmetrically arranged on both sides of the second segment. The two ligature threads (301) are in contact with a first connection point and a second connection point, respectively. The first connection point is the connection point between the first segment and the second segment, and the second connection point is the connection point between the second segment and the third segment. The knotting rope (200) is placed on the straw mat and brought into contact with the middle of the second segment of each reed stalk (300). The straw mat is then rolled up so that the second segment of each reed stalk (300) is rolled up and tightly wrapped around the knotting rope (200). The first and third segments of each reed stalk (300) extend in different directions to form multiple brush-like structures.

8. A wind and sand control facility, characterized in that, include: The grid sand barrier unit or the strip sand barrier unit, wherein the grid sand barrier unit is formed by laying multiple round brush sand barriers crosswise on the ground upwind of the protected object, and the strip sand barrier unit is formed by laying one or more of the round brush sand barriers on the ground, wherein the round brush sand barriers are round brush-shaped net rope sand barriers as described in any one of claims 1-6. The fixing mechanism includes one or more fixing rods, the lower part of which is inserted into the ground, and each of the circular brush-shaped net rope sand barriers is fixedly connected to at least one fixing rod at both ends and the middle part.

9. A photovoltaic desertification control system, characterized in that, This includes vertical reed sand barriers, folded reed sand barriers, and ring-shaped sand barriers that are set up at intervals along the prevailing wind direction; The vertical reed sand barrier extends continuously in a direction perpendicular to the prevailing wind direction and includes a first reed curtain; The folded reed sand barrier is arranged parallel to the vertical reed sand barrier and includes a second straw curtain, which is folded in half in the width direction and the folded part is inserted into the ground. The annular sand barrier is set around the photovoltaic power generation facility and includes one or more annular structures or grid structures. The annular structure is formed by one or more circular sand barriers, and the grid structure is formed by multiple circular sand barriers arranged in a cross pattern. The photovoltaic power generation facility includes a photovoltaic support and a photovoltaic panel installed on the photovoltaic support. At least one set of the annular structure or grid structure is laid on the ground below the photovoltaic panel and surrounds the photovoltaic support, and the circular sand barriers therein are fixedly connected to the photovoltaic support. The first and second straw curtains are both woven from multiple reed stems as warp and multiple composite yarns as weft. The multiple reed stems are arranged in parallel along the length of the straw curtain, with a density of 2 to 3 reed stems per centimeter. The lower part of the reed stems in the first straw curtain is inserted into the ground, while the middle and upper parts are exposed above the ground at a height of 60-80 cm. The height of the exposed part of the second straw curtain above the ground is 30-40 cm. The circular brush sand barrier is a circular brush-shaped net rope sand barrier as described in any one of claims 1-6.

10. The photovoltaic desertification control system according to claim 9, characterized in that: The annular sand barrier includes multiple sets of annular structures or grid structures, which are concentrically arranged around the photovoltaic support, and adjacent annular structures or grid structures are spaced apart. And / or, the vertical reed sand barriers and the folded reed sand barriers are in multiple sets; the multiple sets of vertical reed sand barriers are arranged at intervals along the prevailing wind direction and are parallel to each other; the multiple sets of folded reed sand barriers are arranged at intervals along the prevailing wind direction and are parallel to each other.

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