Wind prevention and sand fixation wall for treating desert and gobi and sand fixation method

Abstract

The invention provides a wind prevention and sand fixation wall and a sand fixation method for treating desert gobi, and belongs to the technical field of desert gobi governing.The wind prevention and sand fixation wall comprises a base, a top plate, a lower inserting piece and a plurality of spliced unit plates, the unit plates comprise windward plates, upper inclined plates, lower inclined plates, upper sand scattering plates and lower sand scattering plates, and the windward plates are provided with through holes; the upper inclined plate and the lower inclined plate are provided with air scattering holes with movable plates and elastic pieces, and the upper sand scattering plate and the lower sand scattering plate are provided with symmetrical sand scattering holes; the sand stabilization method comprises the steps of wall installation, wind-sand diversion, adjustment of the state of the movable plate according to the wind speed and the like. The flow channel orientation and the flow area of the air scattering holes can be adjusted according to the wind speed adaptability, the impact risk of the wall body is reduced in strong wind, the high sand blocking rate is ensured in small wind, meanwhile, the sand stabilization effect is further improved through the flow guide plates, the blocking rings, the turbulent flow rings and other structures, and the problem that the sand stabilization effect and the wall body stability are inconsistent in the prior art is solved; the method is suitable for wind prevention and sand fixation treatment of various desert gobi areas.

Description

Technical Field

[0001] This invention relates to the field of desert and Gobi control technology, and in particular to a windbreak and sand-fixing wall and sand-fixing method for controlling desert and Gobi deserts. Background Technology

[0002] Deserts and Gobi pose a great threat to the ecological environment. Currently, some areas are directly planting trees on the deserts and Gobi to carry out remediation, but the survival rate of trees is low and the remediation effect is not ideal. In spring and winter, the wind-blocking effect of deciduous trees is greatly reduced, and the remediation method of simply planting grass and trees does not have the effect of fire prevention and fire isolation, making it difficult to fundamentally solve the problem of land desertification.

[0003] Existing technologies have yielded some solutions for windbreak and sand-fixing walls in deserts and Gobi. For example, some solutions use supports, straight rods, and struts to form a main frame, which is then combined with pads, sand-blocking nets, and baffles to achieve windbreak and sand fixation. The advantage of these solutions is their simple structure and convenient assembly. However, the air vents in these solutions are fixed structures. If a small aperture is used to ensure the sand-fixing effect, the risk of wall collapse will be greatly increased in strong winds. If a large aperture is used to improve the stability of the wall, the wind and sand interception effect will be extremely poor, failing to meet the core requirements of windbreak and sand fixation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a windbreak and sand-fixing wall and a sand-fixing method for managing deserts and Gobi, solving the technical problem that the sand-fixing effect contradicts the stability of the wall due to the fixed air vents and flow channels of existing windbreak and sand-fixing walls.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A windbreak and sand-fixing wall for desert and Gobi control includes a base and a top plate fixedly connected thereto. A lower insert is provided at the bottom of the base, and several interconnected unit plates are arranged between the base and the top plate. Each unit plate includes a windward plate, an upper inclined plate, a lower inclined plate, an upper sand-loosening plate, and a lower sand-loosening plate. The windward plate is vertically arranged and has several horizontally arranged through holes. The top and bottom of the windward plate are respectively fixedly connected to the upper and lower inclined plates. The windward end of the upper inclined plate is connected to the windward plate, and the upper and lower inclined plates are symmetrically arranged. Several vertically arranged air-diffusing holes are provided on both the upper and lower inclined plates. A movable plate is rotatably installed on the windward sidewall of each air-diffusing hole, and the movable plate is connected to the corresponding inclined plate via an elastic element. A vertically arranged upper sand-loosening plate with upper sand-loosening holes is fixed to the top of the upper inclined plate, and the lower sand-loosening plate with lower sand-loosening holes is fixed to the bottom of the lower inclined plate. The upper and lower sand-loosening holes are symmetrically arranged.

[0006] Furthermore, several guide plates are fixed on the leeward side of the upper inclined plate, each guide plate being located above several air dispersing holes on the upper inclined plate. The guide plates are arranged at an angle, and their tops are connected to the leeward side of the upper inclined plate. An interception ring aligned with the lower sand dispersing holes is set on the leeward side of the lower sand dispersing plate, and several blocks are set on the inner wall of the interception ring. A turbulence ring is rotatably installed on the leeward side of the lower sand dispersing plate, and several circumferentially arranged columns are fixed on the turbulence ring. Each column is equipped with blades and a secondary rod. The end of the secondary rod near the turbulence ring is slidably installed in the column, and the secondary rod is connected to the column through an elastic telescopic rod. A sand shovel is set on the end of the secondary rod away from the turbulence ring. Several sand leakage holes are opened through the sand shovel, and the central axis of the sand leakage holes is arranged parallel to the central axis of the column.

[0007] This invention also provides a sand fixation method, comprising the following steps: Step 1: Based on the area of ​​the desert and Gobi to be treated, select several unit panels for splicing. Fix the spliced ​​unit panels between the base and the top plate. Fix the base in the sand with the lower plug to complete the installation of the windbreak and sand-fixing wall. Step 2: When the sandstorm arrives, the windward plate first comes into contact with the sandstorm. Some of the sandstorm flows out through the through holes, while the remaining sandstorm is diverted by the upper and lower inclined plates and enters the ventilation holes. Step 3: Adjust the movable plate at the ventilation hole according to the wind speed to achieve a balance between windbreak and sand fixation and wall stability.

[0008] Furthermore, in step 3, when the wind speed is low, the sand cannot blow the movable plate, the movable plate remains vertical, the sand is guided through the vertical straight channel of the air diffuser and is unloaded by the windward side wall of the air diffuser, the sand falls and accumulates at the base, and a small amount of airflow flows out horizontally.

[0009] Furthermore, in step 3, when the wind speed is high, the sand impacts the movable plate, causing it to flip and compress the elastic element. The diameter of the airflow hole is enlarged and the horizontal flow channel is increased, reducing the impact of the sand on the wall. At the same time, the movable plate guides the sand to the inclined surface of the guide plate to make the sand fall, or guides the sand to blow the blades to drive the turbulence ring to rotate. The sand pile is dispersed and intercepted through the auxiliary rod and the sand shovel.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention can adjust the flow direction and flow area of ​​the air diffuser holes according to wind speed adaptability, ensuring a high sand interception rate in light winds and reducing the risk of wall impact in strong winds, thus balancing sand fixation effect and wall stability.

[0011] 2. The deflector plate can guide the sand to fall during strong winds, further improving the sand-fixing effect.

[0012] 3. The blocks on the inner wall of the interception ring can disrupt the airflow and create turbulence, thereby improving the efficiency of sand and dust interception.

[0013] 4. The combination of the turbulence ring, column, auxiliary rod and sand shovel can disperse the sand pile and avoid the sand pile being too high in some places, which would affect the performance of the wall. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the unit plate structure in this invention; Figure 3 This is a schematic diagram of the air diffuser hole in this invention; Figure 4 This is a schematic diagram of the structure of the movable plate in the flipped state in this invention; Figure 5 This is a schematic diagram of the structure of the turbulence ring in this invention; Figure 6 In this invention Figure 5 A magnified schematic diagram of the structure at point A; Figure 7 This is a schematic diagram of the secondary rod in this invention.

[0015] In the diagram: 1. Base; 2. Top plate; 3. Lower insert; 4. Wind vane; 5. Through hole; 6. Upper inclined plate; 7. Lower inclined plate; 8. Air diffuser; 9. Upper sand-scattering plate; 10. Lower sand-scattering plate; 11. Upper sand-scattering hole; 12. Lower sand-scattering hole; 13. Movable plate; 14. Shaft; 15. Elastic element; 16. Interception ring; 17. Block; 18. Baffle ring; 19. Positioning ring; 20. Column; 21. Blade; 22. Sub-rod; 23. Elastic telescopic rod; 24. Sand shovel; 25. Sand leakage hole; 26. Guide plate. Detailed Implementation

[0016] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please see Figures 1-4As shown, this invention is a windbreak and sand-fixing wall for controlling desert and Gobi areas, comprising a base 1 and a top plate 2 fixedly connected thereto. A lower insert 3 is provided at the bottom of the base 1. Several interconnected unit plates are arranged between the base 1 and the top plate 2. Each unit plate includes a windward plate 4, an upper inclined plate 6, a lower inclined plate 7, an upper sand-loosening plate 9, and a lower sand-loosening plate 10. The windward plate 4 is vertically arranged and has several horizontally arranged through holes 5. The top and bottom of the windward plate 4 are respectively fixedly connected to the upper inclined plate 6 and the lower inclined plate 7. The windward end of the upper inclined plate 6 is connected to... The windward plate 4 is connected, and the upper inclined plate 6 and the lower inclined plate 7 are symmetrically arranged. Both the upper inclined plate 6 and the lower inclined plate 7 are provided with a number of vertically arranged air dispersing holes 8. A movable plate 13 is rotatably installed on the windward side wall of the air dispersing hole 8, and the movable plate 13 is connected to the inclined plate through an elastic element 15. The top of the upper inclined plate 6 is fixed with a vertically arranged upper sand dispersing plate 9, and the upper sand dispersing plate 9 is provided with upper sand dispersing holes 11. The bottom of the lower inclined plate 7 is fixed with a lower sand dispersing plate 10, and the lower sand dispersing plate 10 is provided with lower sand dispersing holes 12. The upper sand dispersing holes 11 and the lower sand dispersing holes 12 are symmetrically arranged.

[0018] In one embodiment, the lower insert 3 includes a lower insert plate and a positioning spike installed at the bottom of the lower insert plate. The lower insert 3 can assist the base 1 in positioning and installation in the sandy land of the Gobi Desert. This is prior art, and this application has not improved upon it. Therefore, it is not necessary to disclose its specific mechanical and circuit structures, and it does not affect the integrity of this application. The unit plates are connected by snap-fit. In actual use, an appropriate number of unit plates are selected and spliced ​​to form a windproof and sand-fixing wall according to the specific conditions of the installation site. The air diffuser 8 is vertically arranged, so its flow channel is vertically arranged, and the side of the air diffuser 8 away from the windward plate 4 is its windward sidewall. The elastic element 15 can be a spring. Other flexible components can also be used as replacements, such as silicone pillars, spring sheets, etc., which are not specifically limited in this embodiment; the top of the movable plate 13 on the upper inclined plate 6 is fixedly connected to the shaft 14, and the shaft 14 is rotatably mounted on the upper inclined plate 6; the bottom of the movable plate 13 on the lower inclined plate 7 is fixedly connected to the shaft 14, and the shaft 14 is rotatably mounted on the lower inclined plate 7; the upper sand-loosening hole 11 and the lower sand-loosening hole 12 are both semi-circular. After the lower sand-loosening plate 10 of a unit plate is spliced ​​with the upper sand-loosening plate 9 of the unit plate below it, the lower sand-loosening hole 12 on the lower sand-loosening plate 10 is connected with the upper sand-loosening hole 11 on the upper sand-loosening plate 9, and the splicing forms a complete sand-loosening circular hole.

[0019] In practical applications, this embodiment involves selecting an appropriate number of unit panels based on the specific conditions of the installation site to form a windbreak and sand-fixing wall. Figure 1As shown, in the initial state, the elastic element 15 is in a free state, and the movable plate 13 is vertically arranged. When the wind picks up, the windward plate 4 contacts the sand before the upper inclined plate 6, the lower inclined plate 7, the upper sand-scattering plate 9, and the lower sand-scattering plate 10. Some sand can then flow out of the through hole 5, while some sand is diverted by the upper inclined plate 6 and the lower inclined plate 7. This portion of sand enters the wind-scattering hole 8 and first impacts the windward side wall of the wind-scattering hole 8, i.e., the movable plate 13. When the wind speed is low, the sand is insufficient to cause the movable plate 13 to flip and compress the elastic element 15. During this process, the movable plate 13 remains vertically arranged. When the sand passes through the wind-scattering hole 8, it is guided by the vertical flow channel and unloaded by the windward side wall of the wind-scattering hole 8, allowing the sand to fall. A small amount of wind continues to blow horizontally, and the falling sand reduces interference with the horizontal blowing of the sand below, thereby increasing the falling of the sand below. When the wind blows, the movable plate 13 can intercept a large amount of sand, causing it to fall and accumulate at the base 1, preventing a large amount of sand from being blown to other places by the wind, thus achieving the effect of windbreak and sand fixation. If the wind speed is high, the wind and sand will hit the movable plate 13, causing it to flip and compress the elastic element 15, thereby expanding the flow channel diameter of the air diffuser 8. When the movable plate 13 flips to a horizontal state, it increases the horizontal flow channel, which can reduce the impact of wind and sand on the overall windbreak and sand fixation wall, preventing the windbreak and sand fixation wall from being blown down in strong winds. When the wind speed is unstable, the movable plate 13 can flip back and forth, which can block the movement of sand and increase its falling rate, thus achieving the sand fixation effect. In this way, the flow channel orientation and flow area of ​​the air diffuser 8 can be adjusted adaptively according to the wind speed, ensuring a high sand interception rate while avoiding reducing the overall stability of the windbreak and sand fixation wall.

[0020] like Figures 1-4 As shown, in a preferred embodiment of the present invention, a plurality of guide plates 26 are fixed on the leeward side of the upper inclined plate 6, and the plurality of guide plates 26 are respectively located above a plurality of air dispersing holes 8 on the upper inclined plate 6. The guide plates 26 are arranged at an angle, and their tops are connected to the leeward side of the upper inclined plate 6. When the movable plate 13 is flipped, the movable plate 13 guides the wind and sand to blow onto the inclined surface of the guide plates 26 and fall down.

[0021] In practical application, when the movable plate 13 is flipped, it guides the wind and sand to blow onto the inclined surface of the guide plate 26 and fall down. This can increase the flow area of ​​the air dispersing hole 8 in strong winds while ensuring that the sand can be effectively intercepted and fall down, thereby ensuring the sand fixation effect.

[0022] like Figures 1-6 As shown, in a preferred embodiment of the present invention, an interception ring 16 aligned with the lower sand-spreading hole 12 is provided on the leeward side of the lower sand-spreading plate 10, and a plurality of blocks 17 are provided on the inner wall of the interception ring 16.

[0023] In one embodiment, the upper sand-spreading plate 9 and the lower sand-spreading plate 10 are provided with drainage grooves, and the drainage grooves are arranged toward the central axis of the upper sand-spreading hole 11 and the lower sand-spreading hole 12.

[0024] In practical application, the sand in this embodiment is diverted by the upper inclined plate 6 and the lower inclined plate 7 and then moves to the upper sand-spreading plate 9. After climbing, the sand is unloaded, some of it falls directly back, and some passes through the upper sand-spreading hole 11. The wind force on this part of the sand is greatly reduced, and it falls in large quantities after passing through the upper sand-spreading hole 11. The sand that moves to the lower sand-spreading plate 10 passes through the lower sand-spreading hole 12 and then enters the interception ring 16. The arrangement of several blocks 17 can disturb the airflow and cause the airflow to generate local turbulence and vortex flow. The sand can be intercepted by the blocks 17 and unloaded and fall, increasing the interception efficiency of sand and dust particles.

[0025] like Figures 1-7 As shown, in a preferred embodiment of the present invention, a turbulence ring 18 is rotatably installed on the leeward side of the lower sand-spreading plate 10, and a plurality of columns 20 arranged in a circular pattern are fixed on the turbulence ring 18. Each column 20 is provided with a blade 21 and a secondary rod 22.

[0026] In one embodiment, a positioning ring 19 is fixed on the leeward side of the lower sand-spreading plate 10 and is coaxially arranged with the lower sand-spreading hole 12. The diameter of the positioning ring 19 is larger than the diameter of the lower sand-spreading hole 12. The turbulence ring 18 is rotatably mounted on the positioning ring 19, and the two are coaxially arranged.

[0027] In practical application, when the movable plate 13 on the inclined plate 7 is blown over by strong wind, the movable plate 13 guides the wind and sand to blow the blades 21, which can drive the turbulence ring 18 to rotate. Then the auxiliary rod 22 rotates synchronously, which can increase the flow area of ​​the air dispersing hole 8 in strong wind while ensuring that the sand can be effectively intercepted and fall, thereby ensuring the sand fixation effect.

[0028] like Figures 5-7 As shown, in a preferred embodiment of the present invention, the end of the auxiliary rod 22 near the spoiler ring 18 is slidably installed inside the column 20, and the auxiliary rod 22 is connected to the column 20 through an elastic telescopic rod 23.

[0029] In one embodiment, the elastic telescopic rod 23 is a telescopic rod with a built-in spring, which is prior art. This application has not improved upon it. Therefore, it is not necessary to disclose its specific mechanical structure and circuit structure, and it does not affect the integrity of this application.

[0030] In practical application of this embodiment, the elastic telescopic rod 23 is initially in a free state, at which point the elastic telescopic rod 23 retracts into the column 20, as shown below. Figure 6As shown; when the movable plate 13 on the inclined plate 7 is blown over by the strong wind, the movable plate 13 guides the wind and sand to blow the blades 21, which can drive the turbulence ring 18 to rotate. The rotation speed of the turbulence ring 18 is proportional to the wind speed. The greater the rotation speed of the turbulence ring 18, the greater the centrifugal force. The elastic telescopic rod 23 will be stretched, and the auxiliary rod 22 can extend out of the column 20 to increase the turbulence area and intercept the wind and sand passing through the through hole 5.

[0031] like Figures 5-7 As shown, in a preferred embodiment of the present invention, the end of the secondary rod 22 away from the turbulence ring 18 is provided with a sand-shoveling disc 24.

[0032] In one embodiment, the sand-shoveling disc 24 is provided with a plurality of sand-draining holes 25, and the central axis of the sand-draining holes 25 is arranged parallel to the central axis of the column 20.

[0033] In practical application, the sand shovel 24 can increase the turbulence area and disperse the sand pile located behind the base 1, preventing the sand from accumulating too high in one place and reducing the wind dispersion effect of the ventilation hole 8. It can also prevent the sand pile from being blown around by the wind passing through the ventilation hole 8. When the sand shovel 24 shovels up, the sand on it leaks down through the sand leakage hole 25, which can make the sand around the base 1 evenly thicken and be more stably blocked by the windproof and sand-fixing wall.

[0034] Working principle of the invention: The above embodiments of the invention provide a windbreak and sand-fixing wall for controlling deserts and Gobi. When the wind blows, the windward plate 4 contacts the wind and sand before the upper inclined plate 6, lower inclined plate 7, upper sand-dispersing plate 9, and lower sand-dispersing plate 10. Part of the wind and sand can flow out through the through hole 5, while some is diverted by the upper inclined plate 6 and lower inclined plate 7. This portion of the wind and sand enters the wind-dispersing hole 8 and first impacts the windward side wall of the wind-dispersing hole 8, i.e., the movable plate 13. When the wind speed is low, the wind and sand are insufficient to cause the movable plate 13 to flip and compress the elastic element 15. During this process, the movable plate 13 is always vertically positioned. When the wind and sand pass through the wind-dispersing hole 8, it is guided by the vertical flow channel and unloaded by the windward side wall of the wind-dispersing hole 8, allowing the sand to fall. A small amount of wind continues to blow horizontally, and the falling sand reduces interference with the horizontal blowing of the wind and sand below, thereby increasing the sand flow below. The amount of sand falling can be intercepted when the wind blows, causing a large amount of sand to fall and accumulate at the base 1, preventing a large amount of sand from being blown to other places by the wind, thus achieving the effect of windbreak and sand fixation. If the wind speed is high, the wind and sand will hit the movable plate 13, causing it to flip and compress the elastic element 15, thus expanding the flow channel diameter of the air diffuser 8. When the movable plate 13 flips to a horizontal state, the horizontal flow channel is increased, which can reduce the impact of wind and sand on the overall windbreak and sand fixation wall, preventing the windbreak and sand fixation wall from being blown down in strong winds. When the wind speed is unstable, the movable plate 13 can flip back and forth, which can block the movement of sand and increase its falling rate, thus achieving the sand fixation effect. In this way, the flow channel orientation and flow area of ​​the air diffuser 8 can be adjusted according to the wind speed, ensuring a high sand interception rate while avoiding reducing the overall stability of the windbreak and sand fixation wall.

[0035] This embodiment also discloses a sand-fixing method based on the above-mentioned windbreak and sand-fixing wall, the specific steps of which are as follows: Step 1, Install windbreak and sand-fixing walls: Based on the area of ​​the desert / Gobi to be treated (e.g., a 100m x 5m area), select 50 unit panels and splice them together using a snap-fit ​​structure (e.g., ...). Figure 1 As shown in the figure, the spliced ​​unit panel is embedded into the installation groove between the base 1 and the top plate 2 and fixed with bolts; the positioning spike of the lower plug 3 is vertically inserted into the sand to a depth of 30cm to ensure that the base 1 is stably fixed, and the wall installation is completed. Step 2, Sandstorm Diversion: When sandstorms arrive, the windward plate 4 is the first to come into contact with the sandstorm (e.g., Figure 1 , Figure 2 As shown in the figure, some of the sand flows out through the through hole 5, and the remaining sand is diverted to the ventilation hole 8 by the upper inclined plate 6 and the lower inclined plate 7. Step 3, Adaptive adjustment of sand fixation: In light winds (wind speed ≤ 5m / s), the movable plate 13 remains vertical (e.g. Figure 3 As shown), the sand is unloaded through the vertical straight channel of the ventilation hole 8, and the sand particles fall and accumulate at the base 1; During strong winds (wind speed > 5 m / s), the movable plate 13 flips over (e.g. Figure 4As shown), the airflow channel of the diffuser hole 8 is enlarged and the wind and sand are guided to the guide plate 26; at the same time, the wind and sand drive the turbulence ring 18 to rotate (as shown). Figure 5 As shown), the auxiliary rod 22 extends, and the sand-shoveling disc 24 disperses the sand pile (as shown). Figure 7 (As shown in the figure); the sand particles are further intercepted by the upper sand-loosening hole 11, the lower sand-loosening hole 12 and the interception ring 16, so as to achieve a balance between windbreak and sand fixation and wall stability.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A windbreak and sand-fixing wall for controlling desert and Gobi areas, characterized in that, Includes a base (1) and a top plate (2) fixedly connected thereto. The bottom of the base (1) is provided with a lower insert (3). Several interlocking unit plates are provided between the base (1) and the top plate (2). The unit plates include a windward plate (4), an upper inclined plate (6), a lower inclined plate (7), an upper sand-loosening plate (9), and a lower sand-loosening plate (10). The windward plate (4) is vertically arranged and has several horizontally arranged through holes (5) through it. The top and bottom of the windward plate (4) are respectively fixedly connected to the upper inclined plate (6) and the lower inclined plate (7). The windward end of the upper inclined plate (6) is connected to the windward plate (4) and the upper inclined plate (6) is fixedly connected to the windward plate (4). The upper inclined plate (6) and the lower inclined plate (7) are symmetrically arranged. Both the upper inclined plate (6) and the lower inclined plate (7) are provided with a number of vertically arranged air vents (8). The air vents (8) are rotatably mounted on the windward side wall of the air vents (8) and the movable plate (13) is connected to the corresponding inclined plate through the elastic element (15). The upper inclined plate (6) is fixed with a vertically arranged upper sand vent plate (9) and the upper sand vent plate (9) is provided with an upper sand vent (11). The lower inclined plate (7) is fixed with a lower sand vent plate (10) and the lower sand vent plate (10) is provided with a lower sand vent (12). The upper sand vent (11) and the lower sand vent (12) are symmetrically arranged.

2. The windbreak and sand-fixing wall for controlling desert and Gobi deserts as described in claim 1, characterized in that, A plurality of guide plates (26) are fixed on the leeward side of the upper inclined plate (6). The plurality of guide plates (26) are respectively located above a plurality of air diffusers (8) on the upper inclined plate (6). The guide plates (26) are arranged at an angle and their tops are connected to the leeward side of the upper inclined plate (6).

3. A windbreak and sand-fixing wall for controlling desert and Gobi deserts as described in claim 1, characterized in that, An intercepting ring (16) aligned with the lower sand-spreading hole (12) is provided on the leeward side of the lower sand-spreading plate (10), and several blocks (17) are provided on the inner wall of the intercepting ring (16).

4. A windbreak and sand-fixing wall for controlling desert and Gobi deserts as described in claim 1, characterized in that, A turbulence ring (18) is rotatably installed on the leeward side of the lower sand-spreading plate (10). Several columns (20) arranged in a circle are fixed on the turbulence ring (18). Each column (20) is provided with a blade (21) and a secondary rod (22) is also provided on each column (20).

5. A windbreak and sand-fixing wall for controlling desert and Gobi deserts as described in claim 4, characterized in that, The end of the auxiliary rod (22) near the spoiler ring (18) is slidably installed inside the column (20), and the auxiliary rod (22) is connected to the column (20) through an elastic telescopic rod (23).

6. A windbreak and sand-fixing wall for controlling desert and Gobi deserts as described in claim 5, characterized in that, The end of the secondary rod (22) away from the turbulence ring (18) is provided with a sand-shoveling disc (24).

7. A windbreak and sand-fixing wall for controlling desert and Gobi deserts as described in claim 6, characterized in that, The sand-shoveling disc (24) has several sand-leaking holes (25) through it, and the central axis of the sand-leaking holes (25) is arranged parallel to the central axis of the column (20).

8. A method for windbreak and sand fixation in desert and Gobi areas, characterized in that, Using the sand-fixing wall as described in any one of claims 1 to 7 includes the following steps: Step 1: Select several unit panels according to the area to be treated in the desert and Gobi, and fix the spliced ​​unit panels between the base (1) and the top plate (2). Fix the base (1) in the sandy area through the lower plug (3) to complete the installation of the windbreak and sand-fixing wall. Step 2: When the wind and sand come, the windward plate (4) first contacts the wind and sand. Some of the wind and sand flows out through the through hole (5). The remaining wind and sand is diverted by the upper inclined plate (6) and the lower inclined plate (7) and enters the ventilation hole (8). Step 3: According to the wind speed, the movable plate (13) at the ventilation hole (8) is adjusted to achieve a balance between windbreak and sand fixation and the stability of the wall.

9. A method for windbreak and sand fixation in desert and Gobi areas as described in claim 8, characterized in that, In step 3, when the wind speed is low, the sand cannot blow the movable plate (13), the movable plate (13) remains vertical, the sand is guided by the vertical straight channel of the air diffuser (8) and is unloaded by the windward side wall of the air diffuser (8), the sand falls and accumulates at the base (1), and a small amount of airflow flows out horizontally.

10. A method for windbreak and sand fixation in desert and Gobi areas as described in claim 8, characterized in that, In step 3, when the wind speed is high, the wind and sand impact the movable plate (13) to flip it and compress the elastic element (15), the flow channel diameter of the air diffuser (8) is expanded and the horizontal flow channel is increased, reducing the impact force of the wind and sand on the wall; at the same time, the movable plate (13) guides the wind and sand to blow onto the inclined surface of the guide plate (26) to make the sand fall, or guides the wind and sand to blow the blade (21) to drive the turbulence ring (18) to rotate, and the sand pile is dispersed and intercepted through the auxiliary rod (22) and the sand shovel (24).

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