Sand blocking structure, sand fixing structure, sand and sand protection system and protection method thereof

Abstract

The invention discloses a sand blocking structure, a sand fixing structure, a sand and sand protection system and a protection method thereof. The wind and sand protection system is arranged on one side of the upwind direction of a protected object in the main wind direction and comprises a sand blocking structure and a sand stabilization structure, the sand blocking structure comprises a cylindrical sand blocking barrier, an arched sand blocking barrier and a triangular sand blocking barrier which are sequentially arranged at intervals, and each sand blocking barrier comprises a framework and a plant body; the framework comprises at least one grid frame which is defined by grid plates and is in a solid geometrical shape, the plant bodies are fixedly attached to the grid frames, the inner space of each grid frame can be used for sand settlement and accumulation, the multiple grid frames are sequentially connected in the second direction, the second direction intersects with the first direction, and the first direction intersects with the second direction. The first direction is parallel to the width direction of the sand barrier, and the main wind direction is parallel to the first direction. The sand fixing structure comprises a high vertical type mesh cage sand fixing barrier, a mesh cage sand fixing embankment, a mesh cage sand fixing barrier and a mesh cage sand fixing grid which are sequentially arranged at intervals. The protection system is resistant in the front and fixed in the rear, the wind speed is greatly restrained, and the protection effect is remarkable.

Description

Technical Field

[0001] The present invention relates to the technical field of desert area ecological environment governance, and in particular to a sand blocking structure, a sand fixing structure, a wind and sand protection system and a protection method thereof. Background Art

[0002] In areas plagued by desertification, the invasion of wind and sand and the resulting damage poses a particularly serious problem. While traditional wind and sand protection technologies can alleviate this problem to a certain extent, they suffer from numerous drawbacks. For example, protective materials such as grass grids and straw require frequent replacement, as their lifespan typically does not exceed two years. Furthermore, the use of non-degradable materials, such as plastic grids, can temporarily address the wind and sand problem but ultimately lead to secondary environmental pollution. On the other hand, while concrete sand barriers and gravel grids can effectively block sand and dust, their high construction costs and disruption to the ecological balance make this approach unsuitable for truly low-cost, green governance.

[0003] From the perspective of structural limitations, traditional high vertical sand barriers, such as those made of HDPE mesh, wire mesh, and perforated steel plates, are prone to sand accumulation near them, which requires regular manual cleaning and maintenance. Moreover, the columns and frames that form their components are all straight and rigid structures, which are often difficult to fit closely with the undulating terrain of sand dunes and deserts, which will lead to aggravated wind erosion in local areas.

[0004] Desertified areas harbor a large number of short-lived pioneer plants, such as tumbleweed and sand millet, as well as underutilized straw and branches. This waste not only exacerbates the spread of invasive species but also fails to effectively transform them into resources for desertification control. Most current technologies rely on one-time construction, requiring reconstruction once sand accumulates and buries the land, which is both costly and expensive. Summary of the Invention

[0005] The main purpose of the present invention is to provide a sand blocking structure, a sand fixing structure, a wind and sand protection system and a protection method thereof, thereby overcoming the deficiencies in the prior art.

[0006] To achieve the aforementioned object of the invention, the technical solutions adopted by the present invention include:

[0007] The first aspect of the present invention provides a sand-blocking structure, comprising: at least one sand-blocking barrier, a plurality of said sand-blocking barriers being arranged in sequence along a first direction, said sand-blocking barrier comprising a skeleton and a plant body, said skeleton comprising at least one grid frame having a three-dimensional geometric shape formed by grid plates, said plant body being fixedly attached to said grid frame, and an internal space of said grid frame being provided for sand to settle and accumulate, a plurality of said grid frames being connected and arranged in sequence along a second direction, said second direction intersecting with said first direction, and said first direction being parallel to the width direction of said sand-blocking barrier.

[0008] In some more specific embodiments, the lattice frame is cylindrical, triangular, elliptical, or prism-shaped. Furthermore, the lattice frame is cylindrical and has a hollow cavity extending along the second direction. The sand-blocking structure further includes a fixing mechanism for fixing the lattice frame to the ground. The fixing mechanism includes inclined ropes and ground spikes. The inclined ropes secure the lattice frame to the ground along the first direction via the ground spikes.

[0009] In some more specific solutions, the skeleton includes a plurality of the grid frames, which are sequentially connected along the second direction, the axial direction of each grid frame is parallel to the first direction, and the internal space of the grid frame is through-connected along its own axial direction.

[0010] The length-to-width ratio of a single sand barrier is in the range of 1:1-1:3, wherein the length is the extension distance in the second direction, and the width is the extension distance in the first direction.

[0011] The spacing between the multiple sand-blocking barriers is 5-10 times the height of the sand-blocking barriers.

[0012] The ratio of the spacing between the sand barriers to the width of the sand barriers is in the range of 5:3-10:1. Preferably, the spacing between the plurality of sand barriers is 5-10m, and the width of the sand barriers is 1-3m.

[0013] Furthermore, the grid frame and the ground together form a wind suppression channel, the height of the grid frame in the second direction decreases from the middle to both ends, and the cross-section of the grid frame in the second direction is arched or triangular.

[0014] The second aspect of the present invention provides a sand fixation structure, comprising: at least one sand fixation barrier, a plurality of said sand fixation barriers being arranged in sequence along a first direction, said sand fixation barrier comprising a support frame and filling branches, said support frame comprising at least one mesh cage frame having a three-dimensional geometric shape formed by stacking and / or enclosing mesh cages, said filling branches being fixedly arranged in said mesh cage frame, and the interior and two side spaces of said mesh cage frame being provided for sand to settle and accumulate, a plurality of said mesh cage frames being connected and arranged in sequence along a second direction, said second direction intersecting with the first direction, and said first direction being parallel to the width direction of the sand fixation barrier.

[0015] In some more specific schemes, a plurality of the sand-fixing barriers are arranged in sequence along the first direction at intervals, and their heights decrease successively. The permeability of the filling branches increases successively from the ground upwards, forming a sparse structure at the top and dense structure at the bottom.

[0016] Furthermore, the length-to-width ratio of a single sand-fixing barrier is in the range of 1:1-3:1, the length is the extension distance in the second direction, the width is the extension distance in the first direction, and the ratio of the spacing between the sand-fixing barriers to the width of the sand-fixing barriers is in the range of 1:6-20:1. Preferably, the distance between multiple sand-fixing barriers is 5 to 10 meters, and the width of the sand-fixing barriers is 0.5 to 30 meters.

[0017] The third aspect of the present invention provides a wind and sand protection system, which is arranged on the upwind side of the protection object along the main wind direction, and includes: a sand blocking structure and a sand fixing structure. The sand blocking structure and the sand fixing structure are arranged in sequence at intervals along the main wind direction, and the main wind direction is parallel to the first direction.

[0018] In some more specific schemes, the sand-blocking structure includes cylindrical sand-blocking barriers, arched sand-blocking barriers, and triangular sand-blocking barriers arranged in sequence; the sand-fixing structure includes high-standing mesh cage sand-fixing barriers, mesh cage sand-fixing embankments, mesh cage sand-fixing barriers, and mesh cage sand-fixing grids arranged in sequence; the mesh box frame of the mesh cage sand-fixing grid is composed of a plurality of mesh cages intersecting crosswise.

[0019] Furthermore, the distances between the cylindrical sand barrier, arched sand barrier, triangular sand barrier, high vertical mesh cage sand barrier, mesh cage sand embankment, mesh cage sand barrier, mesh cage sand grid, and protected objects are d1, d2, d3, d4, d5, d6, and d7, respectively, and d1, d2, d3, d4, d5, d6, and d7 are 5 to 10 meters.

[0020] A fourth aspect of the present invention provides a wind and sand protection method, wherein the wind and sand protection system is constructed on the upwind side of the protection object along the main wind direction.

[0021] Compared with the prior art, the advantages of the present invention include at least:

[0022] First, the present invention provides a wind and sand protection system. The cylindrical sand barrier forms a multi-layer structure with a certain degree of permeability on the airflow path. The branches and pores that make up the grid undergo rigid friction with the airflow, while the branches or plants grafted on the inner wall and outer periphery of the cylinder undergo flexible friction with the airflow, greatly suppressing the wind speed. At the same time, the spacing of the multi-layer structure at the bottom of the cylinder is small, the permeability is small, and the sand fixation effect is strong; the spacing increases upwards, the permeability increases, and the sand fixation effect weakens, which conforms to the natural law that wind and sand flows are mostly concentrated on the surface, and the sand fixation effect is significant.

[0023] Second, the present invention provides a wind and sand protection system, in which the arch and triangular eaves structure block the dragging effect of the upper airflow on the surface airflow, forming a narrow wind-blocking channel on the inner side of the structure. At the same time, the branches and plants distributed on the top and ground inside the structure together constitute a flexible sand-blocking layer. The synergistic effect of these three significantly improves the overall sand fixation effect. In addition, the arch and triangular eaves structure not only provide a shaded, windproof, and moisturizing environment for the plants installed inside, but also is conducive to the growth of plants. The materials used are green, environmentally friendly and degradable. When the filled branches are lost due to wind erosion, new branches can be collected nearby for refilling and replenishment, thereby achieving the sustainability of sand fixation.

[0024] Third, the sandstorm protection system provided by the present invention features a stable cage structure with a certain degree of elasticity. Compared to rigid structures, it can adapt to terrain changes and achieve a harmonious effect with the surrounding terrain. The cage is foldable and does not require fixed columns, making transportation and installation efficient and quick. The plants and straw filling materials can be collected nearby, which can effectively control the population of invasive species such as tumbleweed and sand grains.

[0025] Fourth, the present invention provides a sandstorm protection system in which the porosity of the infill branches increases from the ground upwards, forming a structure that is sparse at the top and dense at the bottom. This ensures structural stability while effectively blocking the flow of wind and sand. Each component of the protection system can be continuously reused, such as by lifting and moving it, by shaking it. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a wind and sand protection system provided by an embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the structure of a cylindrical sand barrier provided by an embodiment of the present invention;

[0028] Figure 3 This is a schematic structural diagram of another cylindrical sand barrier provided by an embodiment of the present invention;

[0029] Figure 4Schematic diagram of the structure of the arched sand barrier provided by an embodiment of the present invention;

[0030] Figure 5 2 is a schematic structural diagram of a triangular sand barrier provided by an embodiment of the present invention;

[0031] Figure 6 Schematic diagram of the structure of the woven branch grid provided by an embodiment of the present invention;

[0032] Figure 7 2. It is a structural diagram of a mesh cage sand-fixing embankment provided by an embodiment of the present invention;

[0033] Figure 8 2. It is a structural diagram of a net cage sand barrier provided by an embodiment of the present invention;

[0034] Figure 9 Schematic diagram of the structure of the longitudinal cage of the cage sand fixation grid provided by an embodiment of the present invention;

[0035] Figure 10 It is a structural schematic diagram of the latitudinal cage of the cage sand fixation grid provided by an embodiment of the present invention. Description of the drawings:

[0037] 1. Cylindrical sand barrier; 11. Cylindrical branch woven grid; 12. Inclined steel wire rope; 13. Ground nails; 14. Cutting plants; 15. Cutting branches; 16. Sand accumulation surface; 17. Main wind direction; 18. Ground; 2. Arched sand barrier; 21. Arched branch woven grid; 22. Planted shrubs; 3. Triangular sand barrier; 31. Triangular branch woven grid; 4. High-standing mesh cage sand barrier; 5. Mesh cage sand embankment; 6. Mesh cage sand barrier; 7. Mesh cage sand grid; 71. Warp cage; 72. Weft cage; 8. Protected object. DETAILED DESCRIPTION

[0038] In view of the shortcomings of the prior art, the inventors of this case, after long-term research and extensive practice, have proposed the technical solution of the present invention. The following will further explain this technical solution, its implementation process and principles.

[0039] Please refer to Figure 1 The present application discloses a wind and sand protection system for reducing the erosion and impact of wind and sand on a protected object 8. The system includes a sand blocking structure and a sand fixation structure sequentially arranged on the upwind side of the protected object 8 along a main wind direction 17, wherein the main wind direction 17 is parallel to a first direction.

[0040] Specifically, the sand-blocking structure includes a cylindrical sand barrier 1, an arched sand barrier 2, and a triangular sand barrier 3, spaced sequentially along a first direction. The sand-fixing structure also includes a high-standing mesh cage sand barrier 4, a mesh cage sand-fixing embankment 5, a mesh cage sand-fixing barrier 6, and a mesh cage sand-fixing grid 7, spaced sequentially along the first direction. The spacing between the cylindrical sand barrier 1, the arched sand barrier 2, the triangular sand barrier 3, the high-standing mesh cage sand-fixing barrier 4, the mesh cage sand-fixing embankment 5, the mesh cage sand-fixing barrier 6, the mesh cage sand-fixing grid 7, and the protected object 8 is set to d1, d2, d3, d4, d5, d6, and d7, respectively, with d1, d2, d3, d4, d5, d6, and d7 ranging from 5 to 10 meters. Each component is described in detail below.

[0041] Please refer to Figure 2 , the cylindrical sand barrier 1 is set on the sand accumulation surface 16, including a skeleton and a plant body. The skeleton includes a cylindrical branch woven grille 11 formed by a grille plate, with a diameter of 1 to 2 meters and a length of 2 to 3 meters along the second direction. The cylindrical branch woven grille 11 is woven from the branches of plants such as Salix psammophila in the warp and weft, and has a hollow cavity extending along the second direction, forming a rigid sand barrier layer of the cylindrical sand barrier 1. The plant body is fixedly attached to the cylindrical branch woven grille 11. The plant body includes cuttings 14 and cuttings 15, which constitute a flexible sand barrier layer. The internal space of the cylindrical branch woven grille 11 can be used for sand to settle and accumulate. The sand barrier structure also includes a fixing mechanism, which includes an inclined steel wire rope 12 and a ground nail 13. The inclined steel wire rope 12 fixes the cylindrical branch woven grille 11 to the ground 18 through the ground nail 13 along the first direction, thereby ensuring the stability of the entire sand barrier. Please refer to Figure 3 The above-mentioned cylindrical branch woven grille 11 can be replaced by a structure woven from blade barbed wire for wall climbing prevention.

[0042] The cylindrical sand barrier 1 in this application is a cylindrical structure, forming a multi-layer structure with different permeabilities along the airflow path. The branches and pores that make up the grid undergo rigid friction with the airflow, while the branches or plants inserted into the inner wall and outer periphery of the cylinder undergo flexible friction with the airflow, greatly suppressing wind speed. At the same time, the spacing of the multi-layer structure at the bottom of the cylinder is small, the permeability is low, and the sand fixation effect is strong. As the multi-layer structure increases upward, the spacing and permeability increase, and the sand fixation effect weakens. This conforms to the natural law that wind and sand flows are mostly concentrated on the surface, and the sand fixation effect is significant.

[0043] Please refer to Figure 4The arched sand barrier 2 is set on the sand accumulation surface 16, and includes a skeleton and a plant body. The skeleton includes a plurality of arched branch woven grilles 21 formed by a grille plate. These arched branch woven grilles 21 are formed by rectangular grille plates woven from plant branches and bent into an arch shape. The bottom edge is fixed to the ground 18, and the side length of the rectangular grille plate is 2 to 3 meters. The internal space of the arched branch woven grille 21 can be used for sand to settle and accumulate. A plurality of the arched branch woven grilles 21 are connected and arranged in sequence along the second direction, and the second direction intersects with the first direction. The axial direction of each arched branch woven grille 21 is parallel to the first direction, and the internal space of the arched branch woven grille 21 is through-connected along its own axial direction. The arched branch woven grille 21 and the ground together form a wind suppression channel. The cross-section of the arched branch woven grille 21 in the second direction is arched. The sides of multiple arches are connected to each other by wire ties to form a continuous wavy arch structure. The plant bodies are fixedly attached to the grid frame and may include cuttings 14 and cuttings 15. The cuttings 14 and cuttings 15 are placed in the grid pores of the outer and inner walls of the arched branch woven grid 21, and shrubs 22, including Calligonum mongolicum, Nitraria tangutorum, and Haloxylon ammodendron, are planted on the sand surface at the bottom of the arch, together forming a flexible sand barrier for the wind-suppressing channel.

[0044] Similarly, please refer to Figure 5 The triangular sand barrier 3 is set on the sand accumulation surface 16 and includes a frame and plant bodies. The frame includes multiple triangular branch woven grids 31 formed by grid plates. These triangular branch woven grids 31 are formed by two rectangular grid plates woven from plant branches into a triangular shape, with the base fixed to the ground 18. The rectangular grid plates have a side length of 1 to 2 meters. The internal space of the triangular branch woven grids 31 allows sand to settle and accumulate. Multiple triangular branch woven grids 31 are connected in sequence along a second direction, which intersects the first direction. The axial direction of each triangular branch woven grid 31 is parallel to the first direction. The internal space of each triangular branch woven grid 31 is continuous along its own axial direction. Together with the ground 18, the triangular branch woven grid 31 forms a wind suppression channel. The cross-section of the triangular branch woven grid 31 in the second direction is triangular. The sides of the multiple triangular branch woven grids 31 are connected to each other by wire ties, forming a continuous wavy triangular structure. The plant bodies are fixed to the grid frame and may include cuttings 14 and cuttings 15. Cutting plants 14 and cutting branches 15 are set in the grid pores of the outer wall and inner wall of the triangular branch woven grid 31, and shrubs 22 including Calligonum mongolica, Nitraria tangutorum, Haloxylon ammodendron, etc. are planted on the sand surface at the bottom of the internal space, together forming a flexible sand-blocking layer of the wind-suppressing channel.

[0045] To summarize, the arches and triangular eaves structures play a key role, blocking the drag of the upper airflow on the surface airflow, forming a narrow wind-blocking channel on the inside of the structure. At the same time, the branches and plants distributed on the top and ground inside the structure together form a flexible sand-blocking layer. The synergistic effect of these three significantly improves the overall sand-blocking effect. In addition, the arches and triangular eaves structures not only provide shade, windproof, and moisturizing environment for the plants installed inside, which is conducive to plant growth, but also the materials used are green, environmentally friendly, and degradable. When the filling branches rot or are lost due to wind erosion, new branches can be collected nearby for refilling and replenishment, thereby achieving the sustainability of wind and sand control.

[0046] Please refer to Figure 6 , which is a schematic diagram of the grating panels that make up cylindrical woven branch grating 11, arched woven branch grating 21, and triangular woven branch grating 31. When the accumulated sand in the cylindrical sand barrier 1, arched sand barrier 2, and triangular sand barrier 3 reaches a certain thickness and the plants have covered and fixed the sand surface, they can be moved to an upwind area immediately adjacent to their original position to continue their role in blocking wind and fixing sand.

[0047] The high vertical mesh cage sand-fixing barrier 4, the mesh cage sand-fixing embankment 5, the mesh cage sand-fixing barrier 6, and the mesh cage sand-fixing grid 7 all include a support frame and filling branches. The support frame includes at least one mesh cage frame having a three-dimensional geometric shape formed by stacking and / or enclosing mesh cages. The filling branches are fixedly arranged in the mesh cage frame. The internal space of the mesh cage frame can be used for sand settlement and accumulation. A plurality of the mesh cage frames are connected and arranged in sequence along the second direction. The high vertical mesh cage sand-fixing barrier 4, the mesh cage sand-fixing embankment 5, the mesh cage sand-fixing barrier 6, and the mesh cage sand-fixing grid 7 are spaced apart in sequence along the first direction, and their heights decrease in sequence. They are introduced in sequence below:

[0048] The high vertical mesh cage sand barrier 4 includes a support frame and filling branches. The support frame includes at least one mesh cage frame with a three-dimensional geometric shape formed by stacking and / or enclosing mesh cages, that is, the mesh cage frame of the high vertical mesh cage sand barrier 4 is composed of a first mesh cage. The first mesh cage is a cubic structure composed of rectangular steel wire mesh connected by wire ties. The rectangular steel wire mesh is woven by winding low-carbon steel wire and has good strength and durability. In actual application, the first mesh cage can be a finished device with similar structural functions such as a gabion net or an ecological chain cage. According to the vertical projection shape of the first mesh cage in the extension direction, it can be designed into a variety of different field deployment structures such as straight lines, waves, and zigzags. The mesh of the first mesh cage is designed to be polygonal, with an aperture size of 3 to 10 cm to meet different sand control needs. The metal wire used to make the first mesh cage can be iron wire or steel wire with a diameter of 1 to 3 mm to ensure stability and durability.

[0049] The interior of the high vertical mesh cage sand barrier 4 is filled with gravel and branches, wherein the bottom of the mesh cage is filled with gravel of a certain thickness, and the middle and upper parts are filled with plants. The porosity of these filled branches increases from the ground upwards. The bottom of the mesh cage is filled with gravel of a certain thickness to increase the stability of the overall structure, and the middle and upper parts of the mesh cage are filled with plants, such as some short-lived pioneer plants such as tumbleweeds, sand rice, as well as straw, rice straw, branches, leaves, etc., which can effectively block wind and fix sand. When filling the plants, the porosity increases from the gravel upwards, forming a structure that is sparse on the top and dense on the bottom, which not only ensures the stability of the structure, but also effectively blocks the flow of wind and sand.

[0050] When deployed in the field, the height of the first cage is 1 to 2 meters, the length along the second direction is 1 to 3 meters, and the width along the first direction is 0.1 to 0.5 meters. The thickness of the gravel is 0.2 to 0.5 meters, and the thickness of the plants is 0.8 to 1.5 meters, which ensures the stability and efficiency of the high vertical cage sand barrier 4. Since the high vertical cage sand barrier 4 is high and has a large windward surface, special fixing measures are required during use. The support frame can be fixed to the ground using inclined steel wire ropes and fixing rods to ensure its stability in strong winds. The cage frame is not only stable, but also has a certain degree of elasticity. Compared with rigid structures, the cage frame can adjust itself to changes in the terrain, thereby achieving an effect of coordination with the surrounding terrain. In addition, the cage frame is a foldable structure, which makes transportation and installation efficient and quick. The plants, straw and other materials used to fill the interior can be collected nearby, which not only reduces costs, but also can control the number of invasive species such as tumbleweeds and sago to a certain extent, thereby protecting the local ecological environment.

[0051] Please refer to Figure 7 The mesh cage sand-fixing embankment 5 includes a support frame and filling branches. The support frame of the mesh cage sand-fixing embankment 5 includes at least one mesh cage frame with a three-dimensional geometric shape formed by stacking and / or enclosing mesh cages, that is, the mesh cage structure includes at least one second mesh cage. The second mesh cage is a cubic structure composed of rectangular steel wire mesh connected by wire tying. The rectangular steel wire mesh is made of low-carbon steel wire by winding and weaving. In a specific implementation case, the mesh cage frame of the mesh cage sand-fixing embankment 5 can be composed of a single second mesh cage to form a sand retaining embankment with a rectangular cross-section, or it can be a structure with two second mesh cages at the bottom and one second mesh cage at the top stacked in multiple layers. According to the vertical projection shape of the support frame of the mesh cage sand-fixing embankment 5 in the extension direction, it can be divided into a variety of different field deployment structures such as straight line, wave shape, zigzag shape, etc. The mesh of the second mesh cage is polygonal, and its aperture size is 3 to 10 cm. The second net cage has a height of 0.5 to 1 m, a length along the second direction of 1 to 3 m, and a width along the first direction of 0.5 to 1 m.

[0052] Inside the mesh cage sand-fixing embankment 5, filling gravel and filling branches are provided. The specific structure of this filling branch is the same as the filling branch of the high vertical mesh cage sand-fixing barrier 4 mentioned above, forming a structure that is sparse on the top and dense on the bottom, which not only ensures the stability of the structure, but also can effectively block the flow of wind and sand. When deployed in the field, multiple mesh cage frames will be connected into an integral support frame, extending in a direction perpendicular to the main wind direction. The wavy and zigzag arrangement of mesh cages eliminates the columns and foundation casting links required for traditional sand barriers, making assembly and construction more convenient and quick. In addition, the bottom of the mesh cage is filled with gravel, which not only increases the wind resistance of the sand barrier, but also improves its overall stability.

[0053] Please refer to Figure 8 , the mesh cage sand-fixing barrier 6 includes a support frame and filling branches. The support frame of the mesh cage sand-fixing barrier 6 includes at least one mesh box frame with a three-dimensional geometric shape formed by stacking mesh cages, that is, the mesh box structure includes at least one third mesh cage. The third mesh cage is a cubic structure formed by rectangular steel wire mesh connected by wire binding. The rectangular steel wire mesh is made of low-carbon steel wire through winding and weaving processes. In a specific implementation case, the mesh box frame of the mesh cage sand-fixing barrier 6 can be composed of a single third mesh cage to form a sand-fixing barrier with a rectangular cross-section, or it can be stacked in multiple layers by placing two third mesh cages at the bottom and one third mesh cage at the top. According to the vertical projection shape of the support frame of the mesh cage sand-fixing barrier 6 in the extension direction, it can be divided into a variety of different field deployment structures such as straight line, wave shape, zigzag shape, etc.

[0054] Inside the net cage sand-fixing barrier 6, filling branches are installed. The specific structure of these filling branches is the same as that of the filling branches of the high vertical net cage sand-fixing barrier 4 mentioned above. In addition, the mesh of the third net cage is polygonal, with a pore size of 3 to 10 cm. The height of the third net cage is 0.2 to 0.5 meters, the length along the second direction is 1 to 3 meters, and the width along the first direction is 1 to 2 meters.

[0055] Please refer to Figure 9-10, the mesh cage sand fixation grid 7 includes a support frame and filling branches. The support frame of the mesh cage sand fixation grid 7 includes at least one mesh cage frame with a three-dimensional geometric shape formed by stacking and / or enclosing mesh cages, that is, the mesh cage frame contains at least one fourth mesh cage. The fourth mesh cage itself is composed of a warp mesh cage 71 and a weft mesh cage 72. The material and structural design are the same as the mesh cages mentioned above, and will not be repeated here. The mesh cage frame of the mesh cage sand fixation grid 7 is composed of multiple fourth mesh cages in a cross-shaped manner. When laid out in the field, these mesh cage grid structures can be connected into a larger sheet structure, and the extension direction of its length is perpendicular to the main wind direction. The height of the fourth mesh cage is 0.2 to 0.5m, the length along the second direction is 1 to 3m, and the width along the first direction is 1 to 3m. Filling branches are arranged inside the mesh cage sand fixation grid 7. The specific structure of this filling branch is the same as the filling branch of the high vertical mesh cage sand fixation barrier 4 mentioned above, and will not be repeated here.

[0056] The protection system of the present application comprises a cylindrical sand barrier 1, an arched sand barrier 2, a triangular sand barrier 3, a high vertical mesh cage sand barrier 4, a mesh cage sand embankment 5, a mesh cage sand barrier 6, and a mesh cage sand lattice 7. Depending on the actual sandstorm environment and specific application requirements, this protection system can flexibly select and freely combine any two or more of the aforementioned sand barriers, sand embankments, sand barriers, and sand lattices.

[0057] This protection system adopts a protection mode of blocking in front and consolidating in the back. During actual deployment, multiple strip areas parallel to the second direction are sequentially set along the main wind direction. These areas include cylindrical sand barriers, arched sand barriers, triangular sand barriers, high vertical mesh cage sand barriers, mesh cage sand embankments, mesh cage sand barriers and mesh cage sand grids. Specifically, at the upwind position, at least a cylindrical sand barrier 1 is selected. In addition, any one of the arched sand barrier 2 and the triangular sand barrier 3 is selected. At the downwind position, any one of the high vertical mesh cage sand barrier 4 and the mesh cage sand embankment 5 is selected, and any one of the mesh cage sand barrier 6 and the mesh cage sand grid 7 is selected. The above constitutes an effective wind and sand protection system of blocking in front and consolidating in the back.

[0058] The selection of these specific combinations is based on their respective characteristics. For example, the arched sand barrier 2 and the triangular sand barrier 3 are similar in function, the high vertical mesh cage sand barrier 4 and the mesh cage sand embankment 5 are also similar in function, and the same is true for the mesh cage sand barrier 6 and the mesh cage sand grid 7. However, they are different, so from the perspective of necessity and cost-effectiveness, a better protective effect can be achieved according to the above-mentioned setting method. At the same time, costs can be saved. In addition, in order to further improve the protective effect, each part can be set in multiple rows. For example, the cylindrical sand barrier 1 can be set in 2 to 4 rows, the arched sand barrier 2 can also be set in 2 to 4 rows, and so on. The more rows there are, the greater the amount of sand that can be accumulated, thereby making the protective effect better. When facing a strong sand transport environment, a multi-row setting strategy can be flexibly adopted according to local actual conditions and specific hazards, which can effectively enhance the protective capability and extend the service life of the protection system.

[0059] Between these strips, open spaces are left, each 5-10 meters wide, to ensure a rational layout of the protection system and effective sand control. Furthermore, each strip is oriented perpendicular to the prevailing wind direction, creating a sand-blocking structure with multiple rows of wind-suppressing channels and interspersed open spaces along the prevailing wind direction. This creates a woven branch grid-like sand-blocking pattern. This pattern, combined with the cage-type sand-fixing structure, forms a comprehensive and effective sand-blocking and sand-fixing system.

[0060] The protective system typically utilizes a mesh cage, which can be a cube or grid with varying length, width, and height proportions. The cage is a structure made of carefully woven wire and filled with flexible materials such as plants and straw, effectively blocking wind and sand. When strong winds enter these cages, they collide and rub against the flexible material, weakening the airflow. Simultaneously, sand carried by the air settles and accumulates within and on the sides of the cage, effectively blocking wind and sand. It's important to note that the woven branch grids and cages themselves do not directly block wind and sand; rather, they provide the necessary containment and support for the flexible material within. It's the flexible material within that truly delivers the wind-blocking and sand-fixing function. Furthermore, the entire system can be lifted and moved with a simple shake, enabling sustainable reuse. When sand accumulates at the bottom of the cage, a reciprocating rolling and shaking motion raises the sand barrier. Tightening the cage with ground spikes ensures its long-term use and prevents it from being buried by sand. In addition, by shaking and lifting the two ends of the sand barrier back and forth, the sand particles will also slide down from the pores of the grille, which can not only lift the sand barrier but also achieve its displacement, and can be reused for a long time.

[0061] It should be understood that the above embodiments are merely illustrative of the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent variations or modifications made in accordance with the spirit and substance of the present invention are intended to be encompassed within the scope of protection of the present invention.

Claims

1. A sand blocking structure, characterized in that: include: At least one sand barrier, a plurality of the sand barriers are arranged in sequence along a first direction, the sand barrier includes a skeleton and a plant body, the skeleton includes at least one grid frame with a three-dimensional geometric shape formed by grid plates, the plant body is fixedly attached to the grid frame, and the internal space of the grid frame can be used for sand to settle and accumulate, and the plurality of grid frames are connected and arranged in sequence along a second direction, the second direction intersects with the first direction, and the first direction is parallel to the width direction of the sand barrier.

2. The sand blocking structure according to claim 1, characterized in that: The grid frame is cylindrical, triangular prism, elliptical prism or prism with curved surface.

3. The sand blocking structure according to claim 2, characterized in that: The grating frame is cylindrical and has a hollow cavity extending along the second direction. The sand-blocking structure further includes a fixing mechanism for fixing the grating frame to the ground, and / or the fixing mechanism includes an oblique rope and a ground nail, and the oblique rope fixes the grating frame to the ground through the ground nail along the first direction.

4. The sand blocking structure according to claim 1, characterized in that: The skeleton comprises a plurality of grid frames, the plurality of grid frames are sequentially connected along the second direction, the axial direction of each grid frame is parallel to the first direction, and / or the internal space of the grid frame is through-connected along its own axial direction. And / or, the length-to-width ratio of a single sand barrier is in the range of 1:1-1:3, wherein the length is the extension distance in the second direction, and the width is the extension distance in the first direction. and / or, the spacing between the plurality of sand barriers is 5-10 times the height of the sand barriers, And / or, the ratio of the spacing between the sand-blocking barriers to the width of the sand-blocking barriers is in the range of 5:3-10:

1. And / or, the spacing between the multiple sand-blocking barriers is 5 to 10 m, and the width of the sand-blocking barriers is 1 to 3 m.

5. The sand blocking structure according to claim 4, characterized in that: The grid frame and the ground together form a wind suppression channel, and the height of the grid frame in the second direction decreases from the middle to both ends. And / or, the cross section of the grid frame in the second direction is arched or triangular.

6. A sand fixation structure, characterized in that: include: At least one sand-fixing barrier, a plurality of said sand-fixing barriers are arranged in sequence along a first direction, said sand-fixing barrier comprises a support frame and filling branches, said support frame comprises at least one mesh cage frame having a three-dimensional geometric shape formed by stacking and / or enclosing mesh cages, said filling branches are fixedly arranged in said mesh cage frame, and the internal space of said mesh cage frame can be used for sedimentation and accumulation of sand, a plurality of said mesh cage frames are connected and arranged in sequence along a second direction, said second direction intersects with the first direction, and said first direction is parallel to the width direction of the sand-fixing barrier.

7. The sand fixation structure according to claim 6, characterized in that: The length-to-width ratio of a single sand-fixing barrier is in the range of 1:1-3:1, wherein the length is the extension distance in the second direction, and the width is the extension distance in the first direction. and / or, the ratio of the spacing between the sand-fixing barriers to their width is in the range of 1:6-20:1, and / or, the spacing between the multiple sand-fixing barriers is 5 to 10 m, and the width of the sand-fixing barriers is 0.5 to 30 m, And / or, a plurality of said sand-fixing barriers are sequentially spaced apart along the first direction, and their heights decrease successively, And / or, the porosity of the filling branches increases from the ground upwards, presenting a sparse structure at the top and dense structure at the bottom.

8. A sand protection system, arranged on the upwind side of the protected object along the main wind direction, characterized in that: include: The sand-blocking structure according to any one of claims 1 to 5 and the sand-fixing structure according to any one of claims 6 to 7 are arranged in sequence at intervals along the main wind direction, and the main wind direction is parallel to the first direction.

9. The wind and sand protection system according to claim 8, characterized in that: The sand blocking structure includes cylindrical sand blocking barriers, arched sand blocking barriers, and triangular sand blocking barriers arranged in sequence. The sand fixation structure includes high vertical mesh cage sand fixing barriers, mesh cage sand fixing embankments, mesh cage sand fixing barriers, and mesh cage sand fixing grids arranged in sequence. The mesh cage sand fixing grid has a mesh frame composed of multiple mesh cages intersecting crosswise. And / or, the distances between the cylindrical sand barriers, arched sand barriers, triangular sand barriers, high vertical mesh cage sand barriers, mesh cage sand embankments, mesh cage sand barriers, mesh cage sand grids, and protected objects are d1, d2, d3, d4, d5, d6, and d7, respectively, and d1, d2, d3, d4, d5, d6, and d7 are 5 to 10 m.

10. A sandstorm protection method, characterized in that: A wind and sand protection system according to any one of claims 8 to 9 is constructed on the upwind side of the protection object along the main wind direction.

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