Double-layer mesh-shield-shaped sand-blocking sand-fixing barrier and sand-blocking sand-fixing method in coast area

Abstract

The invention provides a double-layer net-shield-shaped sand blocking and fixing barrier and a sand blocking and fixing method in a coast region, and relates to the technical field of sand prevention and sand stabilization, and the double-layer net-shield-shaped sand blocking and fixing barrier comprises a first iron screen, a second iron screen and a third iron screen, a second iron screen; wherein the first iron screen and the second iron screen are stacked up and down, the opening directions of the first iron screen and the second iron screen are the same, and the openings face sand. The sand preventing and blocking effect can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of sand prevention and fixation, in particular to a double-layer net shield-shaped sand prevention and fixation barrier and a sand prevention and fixation method in a coastal area. Background Art

[0002] Sand barrier is a kind of facility used to prevent desertification and fix quicksand. It usually adopts different materials and structural designs to block wind and sand, reduce wind speed, promote sand surface stability and vegetation recovery.

[0003] Existing sand-fixing barriers are usually used in desert areas. The main structure includes a basin-shaped iron screen and thorny sand-fixing vegetation cat-head thorns. When in use, the thorny sand-fixing vegetation cat-head thorns are glued to the iron screen grid, and the basin-shaped iron screen is turned upside down on the sand. However, according to practical tests, this sand-fixing barrier, which combines thorny sand-fixing vegetation with a basin-shaped iron screen according to actual conditions, still has room for further improvement in its sand-fixing effect. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present invention provides a double-layer mesh shield-shaped sand blocking and consolidation barrier and a sand blocking and consolidation method for coastal areas.

[0005] According to a first aspect of an embodiment of the present invention, a double-layer net shield-shaped sand blocking and sand consolidation barrier is provided, comprising:

[0006] First iron screen;

[0007] Second iron screen;

[0008] The first iron screen and the second iron screen are stacked up and down and have the same opening direction, and the opening is arranged toward the sand.

[0009] In some exemplary embodiments of the present invention, based on the aforementioned solution, the first iron screen and the second iron screen have the same structure.

[0010] In some exemplary embodiments of the present invention, based on the above-mentioned solution, the top edge of each of the iron screens is bent toward the same side, so that each of the iron screens has a basin-shaped structure.

[0011] In some exemplary embodiments of the present invention, based on the aforementioned solution, the diameter of the top of each iron screen is smaller than the diameter of the opening;

[0012] The main body of each iron screen is between the top and the opening. The main body has a trapezoidal cross section, the narrow side of the trapezoidal cross section is the top, and the wide side of the trapezoidal interface forms the opening.

[0013] In some exemplary embodiments of the present invention, based on the aforementioned solution, the main body portion is 10 cm high.

[0014] In some exemplary embodiments of the present invention, based on the above solution, the top of each iron screen is circular.

[0015] In some exemplary embodiments of the present invention, based on the aforementioned solution, the top diameter of each iron screen is 36 cm and the opening diameter is 44 cm.

[0016] In some exemplary embodiments of the present invention, based on the aforementioned solution, the grids of each of the iron screens are evenly distributed, and the grids of each of the iron screens are square, and the side length of each grid is 2 mm.

[0017] According to a second aspect of an embodiment of the present invention, a method for preventing and fixing sand in a coastal area is provided, comprising:

[0018] Zoning of sandy areas in coastal areas;

[0019] In each area, a double-layer mesh shield-shaped sand-blocking and sand-fixing barrier as described above is set up every 2 meters.

[0020] In some exemplary embodiments of the present invention, based on the above scheme, zoning the sandy land in the coastal area includes:

[0021] Each area is set to be 100m long and 100m wide.

[0022] The technical solution provided by the embodiments of the present invention may have the following beneficial effects:

[0023] In the embodiment of the present invention, the first iron screen and the second iron screen are stacked up and down to work together. On the one hand, the wind and sand can pass through two layers of barriers when passing through the sand-fixing barrier, so as to effectively reduce the wind speed and reduce the erosion of the wind and sand; on the other hand, the overall weight and structural stability of the sand-fixing barrier can be increased, so that it is not easy to be blown over or moved in an environment with strong wind and sand. The opening facing the sand can make it easier for the wind and sand to settle between the two layers of iron screens and in the space formed by the iron screens and the sand after entering the sand-fixing barrier, thereby promoting the stability of the sand surface and enhancing the sand-fixing effect; on the other hand, it can improve the wind resistance and stability with the help of the supporting force of the sand.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0026] Figure 1 A schematic structural diagram of a double-layer mesh shield-shaped sand blocking and consolidation barrier according to an embodiment of the present invention is shown;

[0027] Figure 2 A schematic diagram of a process flow of a sand blocking and fixation method in a coastal area according to an embodiment of the present invention is schematically shown. DETAILED DESCRIPTION

[0028] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0029] The features, structures or characteristics described above may be combined in one or more embodiments in any suitable manner, and if possible, the features discussed in each embodiment are interchangeable. In the above description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring various aspects of the present invention.

[0030] Although relative terms such as "upper" and "lower" are used in the present invention to describe the relative relationship of one component of the illustration to another component, these terms are used in the present invention only for convenience, such as the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned over and turned upside down, the component described as being "upper" will become the component "lower". Other relative terms such as "high", "low", "top", "bottom", "front", "back", "left", "right", etc. are also used to have similar meanings. When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0031] In the present invention, the terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising", "including" and "having" are used to express an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.

[0032] According to a first aspect of an embodiment of the present invention, a double-layer net shield-shaped sand blocking and sand consolidation barrier is provided, referring to Figure 1 As shown, including:

[0033] The first iron screen 1;

[0034] Second iron screen 2;

[0035] The first iron screen 1 and the second iron screen 2 are stacked up and down with the openings 3 in the same direction, and the openings 3 are arranged toward the sand.

[0036] The first iron screen 1 and the second iron screen 2 are stacked up and down and work together. On the one hand, they can make the wind and sand pass through two layers of barriers when passing through the sand-fixing barrier, so as to effectively reduce the wind speed and reduce the erosion of the wind and sand; on the other hand, they can increase the overall weight and structural stability of the sand-fixing barrier, making it difficult to be blown over or moved even in an environment with strong winds and sand.

[0037] The opening 3 faces the sand, which can make it easier for wind-blown sand to settle between the two layers of iron screens and in the space formed by the iron screens and the sand after entering the sand-fixing barrier, thereby promoting the stability of the sand surface and enhancing the sand-fixing effect; on the other hand, it can make use of the supporting force of the sand to improve the wind resistance and stability.

[0038] In addition, the present invention has a simple structure and can be quickly built without complicated construction equipment and technology. And because the structure is relatively simple, it is also easy to maintain, and the damaged iron screen part can be checked and replaced in time to ensure the long-term effective operation of the sand-fixing barrier.

[0039] On this basis, in order to facilitate production and installation, the first iron screen 1 and the second iron screen 2 may also be arranged to have the same structure.

[0040] In this way, the first iron screen 1 and the second iron screen 2 can be produced using a unified process and mold, thereby effectively reducing production costs and improving production efficiency. During the installation process, the iron screens of the same structure make the installation steps simpler and faster. Construction personnel do not need to distinguish between different components, but only need to install them in the same way, thereby reducing the possibility of installation errors and improving the accuracy and efficiency of installation.

[0041] In addition, when the iron screens of the same structure are stacked up and down, the force on each layer of the iron screens is more uniform, and they can better cooperate and support each other to withstand the impact of wind and sand, thereby improving the overall stability of the sand-fixing barrier. And because of the same structure, the deformation and displacement trends of the two layers of iron screens when subjected to external forces are also relatively consistent, which can reduce local stress concentration and damage caused by structural differences and extend the service life of the sand-fixing barrier.

[0042] The present invention does not limit the specific structure of the first iron screen 1 and the second iron screen 2. For example, in some embodiments, the first iron screen 1 and the second iron screen 2 can be set to a polygonal structure, an arched structure, etc.

[0043] In some exemplary embodiments of the present invention, the edges of the top 4 of each of the iron screens are bent toward the same side, so that each of the iron screens has a basin-shaped structure.

[0044] The basin-shaped iron screen can not only make the wind and sand form vortices around the iron screen, reducing the wind speed and thus reducing the erosion of the rear area by the wind and sand; it can also make the wind and sand gradually accumulate around it to form a stable sand pile, which can further enhance the sand fixation effect of the sand barrier and prevent the invasion of wind and sand.

[0045] In addition, in order to enhance the stability of the basin-shaped iron screen, in an embodiment of the present invention, the diameter of the top 4 of each iron screen can be set to be smaller than the diameter of the opening 3; between the top 4 of each iron screen and the opening 3 is the main body 5 of each iron screen, and the main body 5 has a trapezoidal cross-section, the narrow side of the trapezoidal cross-section is the top 4, and the wide side of the trapezoidal interface forms the opening 3.

[0046] In this way, since the diameter of the top 4 is smaller than the diameter of the opening 3, the iron screen presents a shape that is small at the top and large at the bottom. On the one hand, the iron screen can have a lower center of gravity, strong stability, and is not easily blown over or moved by wind and sand; on the other hand, when the wind and sand blow towards the iron screen, since the top 4 is smaller, the wind and sand will form a local high-speed airflow near the top 4, and gradually spread in the main part 5, reducing the wind speed. In this way, the sand particles in the wind and sand can be more easily deposited around the iron screen, enhancing the sand fixation effect; moreover, the wide-edged opening 3 can increase the contact area between the sand fixation barrier and the sand, thereby enhancing the stability of the sand fixation barrier. In addition, the trapezoidal cross-sectional main body allows the iron screen to have a larger support area in the vertical direction, which can better withstand the pressure from the top 4 and the sides, and improve the overall structural strength.

[0047] However, when the main body 5 is too high, the sand-fixing barrier may reduce its ability to resist wind and sand due to its high center of gravity, and may be easily blown over or moved by wind and sand. When the main body 5 is too low, it may not be able to effectively block wind and sand, and the effect of reducing wind speed is not obvious. The accumulation of sand particles will also be limited, thereby weakening the sand-fixing effect of the sand-fixing barrier. Therefore, in some embodiments of the present invention, the main body 5 is set to be 10 cm high.

[0048] This height is neither too low to effectively reduce wind speed and block sand, nor too high to generate excessive resistance under strong winds, leading to structural instability. Therefore, when the wind and sand blow, the sand flow will change when passing through the iron screen, reducing the wind speed, causing sand to settle around the iron screen, and enhancing the sand fixation effect.

[0049] On this basis, the top 4 of the iron screen can be set to any shape, such as a polygon. In some exemplary embodiments of the present invention, the top 4 of each iron screen is circular.

[0050] Designing the top 4 to be circular can make the wind and sand flow more smoothly when blowing through. Compared with polygons, the circular surface is smoother, and the wind and sand can be dispersed to the surroundings in a more uniform manner when contacting the top 4 of the iron screen, reducing local wind resistance and reducing the impact of wind and sand on the iron screen. Moreover, during the flow of wind and sand, the angular shape is prone to form local eddies, increasing wind resistance and damage to the iron screen. The circular top 4 can effectively avoid this situation, allowing the wind and sand to flow through the sand-fixing barrier more smoothly, thereby improving the sand-fixing barrier's ability to resist wind and sand.

[0051] In addition, when the iron screen is subjected to lateral pressure from wind and sand, the circular top 4 can evenly distribute the pressure to the entire structure, reducing local stress concentration, thereby enhancing the structural stability of the iron screen.

[0052] In order to better ensure the stability of the iron screen, in some exemplary embodiments of the present invention, the diameter of the top 4 of each iron screen is 36 cm, and the diameter of the opening 3 is 44 cm.

[0053] In addition, in some exemplary embodiments of the present invention, the grids of each of the iron screens are evenly distributed, and the grids of each of the iron screens are square, and the side length of each grid is 2 mm.

[0054] In this way, because the grids are evenly distributed, when the wind and sand blow through the sand-fixing barrier, the wind force on the iron screen in each part is relatively consistent, which can reduce deformation or damage caused by uneven local force and improve overall stability. When the sand in the wind and sand encounters the iron screen, it will be more evenly accumulated around the iron screen under the action of the evenly distributed grids, forming a more stable sand pile and enhancing the sand-fixing effect.

[0055] The present invention does not limit the shape of the grid. For example, in some embodiments, the grid can be set to a rhombus, circle, etc. In an embodiment of the present invention, the grid is set to a square. Compared with grids of other shapes, the four sides of the square are equal in length and the angles are also the same. When wind and sand act on the iron screen, the grid is subjected to more balanced forces in all directions, and is less prone to local deformation or damage, thereby improving the overall structural stability of the iron screen. The square grid is also easier to ensure the accuracy and consistency of the size during the manufacturing and installation process. Moreover, due to the erosion of seawater and the influence of salinity, the iron screen needs to be maintained and cleaned frequently. The design of the square grid can reduce the difficulty and cost of maintenance and increase the service life of the sand-fixing barrier.

[0056] By setting the side length of the square grid to 2mm, it can effectively block the sand in the wind and sand without excessively hindering air circulation and water penetration. In this way, while achieving sand fixation, it can provide certain air and water conditions for plant growth in the desert and promote the recovery and development of the desert ecosystem. In addition, the 2mm grid diameter can increase the strength and rigidity of the iron screen, making it less likely to deform or damage when the iron screen is subjected to the pressure of wind and sand and the weight of accumulated sand, thereby extending the service life of the sand fixation barrier.

[0057] Compared with a single-layer sand barrier, the present invention can improve the sand blocking rate by 29% when the wind speed is reduced to below 4m / s at a net wind speed of 18m / s; the sand blocking rate is increased by 1.2%, 4.1% and 21.5% respectively at net wind speeds of 10, 14 and 18m / s; and the sand accumulation behind the sand barrier is more concentrated.

[0058] According to a second aspect of an embodiment of the present invention, a method for preventing and fixing sand in a coastal area is provided, referring to Figure 2 As shown, including:

[0059] Zoning of sandy areas in coastal areas;

[0060] In each area, a double-layer mesh shield-shaped sand-blocking and sand-fixing barrier as described above is set up every 2 meters.

[0061] Sandy land in coastal areas is mainly formed by the erosion, transportation and accumulation of seawater. The waves continuously hit the coast, breaking the rocks into small particles, and then under specific ocean dynamic conditions, such as coastal currents and waves, these sand particles are transported and accumulated near the coast to form sandy land.

[0062] Therefore, the sand in coastal areas has relatively stable wind force, relatively flat terrain, relatively low speed and height of wind and sand movement, and relatively gentle movement of wind and sand.

[0063] Therefore, the sand-fixing barrier of the present invention has unique advantages in coastal areas. First, the structural design of the double-layer shield-shaped sand-fixing barrier can effectively cope with the relatively gentle wind and sand movement in coastal areas. The iron screens stacked up and down with the openings in the same direction can better block the sand carried by the sea breeze from different directions. The basin-shaped structure increases the contact area with the sand and improves stability. It is not easy to be moved even in a coastal environment with relatively stable but continuous wind.

[0064] Secondly, the specific size and mesh design of the iron mesh are suitable for the characteristics of sand in coastal areas. The reasonable setting of the top 4 diameters, the opening 3 diameters and the mesh diameter can effectively block fine sand particles without excessively hindering air circulation and water penetration, providing certain growth conditions for salt-tolerant plants that may grow in coastal areas. At the same time, the evenly distributed circular mesh has smooth edges, which can reduce the resistance of sea breeze and reduce the impact of wind on sand barriers.

[0065] Furthermore, the coastal sand is divided into zones and a sand-fixing barrier is set up every 2 meters, which can form a tight protection system on the coast. This layout fully takes into account the relatively flat terrain of the coastal area, ensuring that wind and sand can be effectively blocked at different locations, stabilizing the sand, protecting the ecological environment of the coastline, and promoting the balance and stable development of the coastal ecosystem.

[0066] In addition, in order to facilitate management and maintenance, in some exemplary embodiments of the present invention, zoning the sandy land in the coastal area includes:

[0067] Each area is set to be 100m long and 100m wide.

[0068] Dividing the sand in the coastal area into areas of 100m long and 100m wide makes the area of ​​each area relatively moderate, which not only helps to form a more uniform sand-fixing barrier, but also facilitates the management and maintenance of the sand in the area. For example, by monitoring the movement speed, direction and sand accumulation of wind and sand in different areas, we can gain an in-depth understanding of the laws of wind and sand movement in coastal areas and provide a basis for further optimizing sand-fixing measures.

[0069] Other embodiments of the invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

[0070] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A double-layer net shield-shaped sand blocking and sand consolidation barrier, characterized in that: include: First iron screen; Second iron screen; The first iron screen and the second iron screen are stacked up and down and have the same opening direction, and the opening is arranged toward the sand.

2. The double-layer net shield-shaped sand blocking and consolidation barrier according to claim 1 is characterized in that: The first iron mesh and the second iron mesh have the same structure.

3. The double-layer net shield-shaped sand blocking and sand consolidation barrier according to claim 2 is characterized in that: The top edge of each iron screen is bent toward the same side so that each iron screen has a basin-shaped structure.

4. The double-layer net shield-shaped sand blocking and sand consolidation barrier according to claim 2 is characterized in that: The diameter of the top of each iron screen is smaller than the diameter of the opening; The main body of each iron screen is between the top and the opening. The main body has a trapezoidal cross section, the narrow side of the trapezoidal cross section is the top, and the wide side of the trapezoidal interface forms the opening.

5. The double-layer net shield-shaped sand blocking and consolidation barrier according to claim 4 is characterized in that: The main body portion is 10 cm high.

6. The double-layer net shield-shaped sand blocking and sand consolidation barrier according to claim 2 is characterized in that: The top of each iron screen is circular.

7. The double-layer net shield-shaped sand blocking and consolidation barrier according to claim 6 is characterized in that: The top diameter of each iron screen is 36 cm and the opening diameter is 44 cm.

8. The double-layer net shield-shaped sand blocking and consolidation barrier according to claim 2 is characterized in that: The grids of each iron sieve are evenly distributed, and the grids of each iron sieve are square, and the side length of each grid is 2 mm.

9. A method for preventing and fixing sand in coastal areas, characterized in that: include: Zoning of sandy areas in coastal areas; In each area, a double-layer mesh shield-shaped sand blocking and consolidation barrier according to any one of claims 1 to 8 is arranged every 2 meters.

10. The sand blocking and fixing method according to claim 9, characterized in that: Zoning of sandy areas in coastal areas includes: Each area is set to be 100m long and 100m wide.

Images