Desert highway engineering sand prevention system

Abstract

The invention relates to the field of sand prevention and control, and discloses a desert highway engineering sand prevention system which comprises a sand prevention module and an adjusting module, the sand prevention module comprises a sand blocking fence, and the sand blocking fence comprises an upper section fence and a lower section fence; a sliding assembly used for driving the upper section fence to slide in the vertical direction of the lower section fence is arranged between the upper section fence and the lower section fence. Every two sand blocking fences form a group, the main wind guiding side and the wind changing side are each provided with one group of sand blocking fences, and the adjusting module comprises a sensing unit used for sensing the wind direction and the wind speed and a control unit used for controlling the relative positions of the upper-section fence and the lower-section fence according to the wind and sand condition; the control unit is in communication connection with the sensing unit, and the control unit receives data collected by the sensing unit, processes the data, calculates the current wind and sand condition and sends an adjusting instruction to the sliding assembly of one or more sand blocking fences according to calculation; an existing desert highway engineering sand prevention system cannot flexibly adapt to wind direction changes.

Description

Technical Field

[0001] The invention relates to the field of wind and sand prevention, and in particular to a desert highway engineering sand prevention system. Background Art

[0002] As one of the countries with the most serious wind and sand disasters in the world, my country has long faced severe challenges brought by desertification, especially Xinjiang, which has become a key area for desertification prevention and control in the country with its vast desert area. Desertification not only erodes precious land resources and destroys the ecological balance, but also poses a direct threat to human survival and development. In the field of transportation, desertification is also a problem that cannot be ignored. Frequent wind and sand activities not only often block road traffic and reduce driving speeds, but also seriously affect the efficiency and safety of road use, and increase maintenance costs and operational risks.

[0003] The core of the formation of wind-blown sand flow is that sand particles, as the material basis, move under the external stress of wind. Therefore, how to effectively cut off the path of interaction between wind and sand and reduce the negative impact of wind on the highway and its surrounding environment has become the core goal of the design of the sand control system of desert highway engineering. In order to prevent sand dunes from moving and burying the highway due to wind, traditional sand control measures mainly focus on wind and sand fixation within a certain range on both sides of the road. These measures are usually scientifically planned based on factors such as the development of sand dunes, dominant wind direction and wind speed, and a certain scale of sand control system is constructed by setting up various sand fixation devices.

[0004] However, the existing desert highway engineering sand control system still has obvious deficiencies in dealing with sudden changes in wind direction. Due to the limitations of construction cost and efficiency, the dominant wind direction is often the main consideration in the design, resulting in relatively weak sand control capabilities on the other side of the highway (i.e., the side with fewer sand fixation devices). Once the wind direction changes suddenly, it is difficult for these areas to effectively block the invasion of wind and sand from the new direction, thereby reducing the overall effectiveness of the entire sand control system. Summary of the invention

[0005] The present invention is intended to provide a desert highway engineering sand control system, as the existing desert highway engineering sand control system cannot flexibly adapt to changes in wind direction.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a desert highway engineering sand prevention system, the two sides of the road are respectively the dominant wind side and the variable wind side, including a sand prevention module and an adjustment module, the sand prevention module includes a sand-blocking fence, the sand-blocking fence includes an upper fence and a lower fence, the upper fence and the lower fence are arranged in parallel, each fence includes two supporting columns and a sand-blocking net, the sand-blocking net is covered between the two supporting columns and is fixedly connected to the supporting columns, and a sliding component for driving the upper fence to slide along the vertical direction of the lower fence is provided between the upper fence and the lower fence;

[0007] The sand-blocking fences are arranged in groups of two, with one group of sand-blocking fences being arranged on the dominant wind side and one group of sand-blocking fences being arranged on the variable wind side. The adjustment module comprises a sensor unit for sensing wind direction and wind speed, and a control unit for controlling the relative positions of the upper fence and the lower fence according to the wind and sand conditions. The control unit is communicatively connected with the sensor unit, receives data collected by the sensor unit, processes the data and calculates the current wind and sand conditions, and issues adjustment instructions to the sliding components of the single or multiple sand-blocking fences according to the calculation.

[0008] The principle and advantage of this scheme are: the sand-blocking fence is divided into an upper section and a lower section. The sliding of the upper section and the lower section is adjusted by a sliding component, so that the overall height of the sand-blocking fence is variable. By adjusting the position of the upper section of the fence, the sand-blocking area can be increased or decreased, effectively blocking the invasion of sand under different wind speeds and wind directions.

[0009] The sensing unit senses the changes in wind direction and wind speed in real time, providing accurate environmental data for the control system. Based on the data collected by the sensing unit, the control unit processes and analyzes the data, determines the current wind and sand conditions, and issues adjustment instructions to the sliding components of the sand barrier fence. The sliding components drive the upper fence to slide vertically along the lower fence to the specified position according to the instructions. This intelligent adjustment method greatly improves the response speed and adaptability of the sand control system.

[0010] When dealing with sudden changes in wind direction, the sand control system can quickly adapt to changes in wind direction through intelligent adjustment, ensuring that a high sand control effect can be maintained under any wind direction conditions. There are two sand-blocking fences on each side, and the height settings of the four sand-blocking fences can be combined in different ways according to the wind and sand conditions and the purpose of the effect. Each fence works together through an intelligent control system. The control unit issues adjustment instructions to the four fences separately or simultaneously based on the data analysis results collected by the sensor unit. The sliding components of each fence adjust the height of the upper fence according to the instructions to form a sand-proof barrier that adapts to the current wind and sand conditions. The four fences are set at different heights and cooperate with each other to form a multi-level, all-round sand control system, which effectively blocks the invasion of wind and sand and protects the highway and its surrounding environment.

[0011] The present invention solves the shortcomings of the traditional sand control system in dealing with sudden changes in wind direction and wind speed, and improves the overall efficiency and stability of the sand control system. Intelligent adjustment reduces the need for manual intervention and reduces maintenance costs. At the same time, due to the improvement of sand control effect, road damage and maintenance costs caused by wind and sand invasion are also reduced.

[0012] Preferably, as an improvement, the sand prevention module includes a sand-blocking dam, which is located on the dominant wind side, and the sand-blocking dam includes an inner sand-blocking dam and an outer sand-blocking dam, the inner sand-blocking dam is arranged between the two sand-blocking fences, and the outer sand-blocking dam is arranged outside the two sand-blocking fences on the side away from the road.

[0013] The beneficial effects of this improvement are: because the dominant wind direction has the characteristics of strong winds and many days with strong winds, the sand prevention device on the dominant wind side needs to be further strengthened;

[0014] As the first barrier of the sand control system, the outer sand barrier directly faces the wind and sand blowing from the dominant wind side. It can effectively intercept and deposit a large amount of sand, reducing the amount of wind and sand entering the subsequent sand control area. When the wind and sand first come into contact with the outer sand barrier, it will be strongly hindered. A large amount of sand will be intercepted and deposited on the embankment, forming a solid protective wall, and the remaining wind and sand will continue to move inward at a weaker intensity; the outer sand barrier slows down the wind speed, making the subsequent wind and sand easier to control and manage, which helps the sand barrier fence to adjust its height more accurately to adapt to the current wind and sand conditions. As the second protective barrier, the inner sand barrier further intercepts and deposits wind and sand, increases the overall stability of the sand control system, and helps prevent problems such as foundation settlement caused by wind and sand erosion.

[0015] At the same time, after the wind and sand contact the sand bank, the wind and sand that cannot be completely blocked by the sand bank will be thrown upward at the shoulder of the bank, which makes it possible to set up the sand bank at the front end of the two sand barrier fences in the direction of the dominant wind to prevent the wind and sand from directly impacting the bottom of the sand barrier fence. This not only protects the connection between the sand barrier fence and the ground, but also significantly improves the wind resistance and stability of the sand barrier fence, and effectively prevents the sand barrier fence from falling due to the wind and sand.

[0016] Preferably, as an improvement, the sand control module also includes a sand transport unit, a vegetation unit and a sand barrier unit, which are arranged in sequence from the side of the road to the outside. The sand transport unit is a smooth section for preventing wind and sand accumulation, the vegetation unit is a sand control belt planted with drought-resistant plants, and the sand barrier unit is a plurality of square grids surrounded by gauze distributed in an array.

[0017] The beneficial effects of this improvement are: the sand transport unit adopts a smooth cross-section design, so that the wind and sand are more easily guided by the wind direction to continue moving forward when they come into contact with the area, rather than stagnating and accumulating. This is to prevent the accumulation of wind and sand in areas close to the road; the introduction of vegetation units, by planting drought-resistant plants to form a sand-proof belt, the long-term growth of vegetation can stabilize the sand, consolidate the soil through the root system, reduce wind erosion, achieve fundamental management of the sand, and effectively slow down the wind speed, further preventing the spread of wind and sand. At the same time, as a green landscape, the vegetation unit can significantly improve the ecological environment around the road and enhance the visual beauty; the setting of the sand barrier unit can intercept part of the wind and sand, slow down its speed, and allow more wind and sand to be deposited inside the grid and gradually fixed. Over time, a stable soil layer will gradually form in the grid, providing more favorable conditions for the growth of vegetation. In addition, the sand barrier unit can also protect the vegetation unit from direct attack by strong winds, ensuring that it can grow stably.

[0018] The sand transport unit, vegetation unit and sand barrier unit set up in sequence from the roadside to the outside form a complete sand control system. This system uses a variety of physical and biological methods to effectively intercept, guide, fix and control wind and sand, providing a strong guarantee for road safety, ecological environment improvement and sand control.

[0019] Preferably, as an improvement, the two sand-blocking fences in a group are spaced 20 m apart, the highest height of a single sand-blocking fence raised to is 2.5 m, and the lowest height of a single sand-blocking fence lowered to is 1 m.

[0020] The beneficial effect of this improvement is that the 20m interval design forms an effective sand-proof area between the two sand-proof fences. When the sandstorm comes, the two fences can work together to block and slow down the advancement of the sandstorm, thereby enhancing the overall sand-proof effect. At the same time, this interval also avoids problems such as excessive wind resistance and concentrated wind pressure that may be caused by too dense fences.

[0021] When the wind speed is low or the sandstorm is weak, the fence can be lowered to a lower height (such as 1m) to reduce obstruction to wind flow and maintain air circulation; when the wind speed is high or the sandstorm is severe, the fence can be raised to a higher height (such as 2.5m) to more effectively block the sandstorm.

[0022] Preferably, as an improvement, the width of the sand barrier unit on the dominant wind side is greater than that of the sand barrier unit on the variable wind side, the sand barrier fence is located on the side of the sand barrier unit away from the road, and a vegetation unit is provided between the sand barrier unit on the dominant wind side and the sand barrier fence.

[0023] The beneficial effect of this improvement is that the width of the sand barrier unit on the dominant wind side is designed to be larger than that on the variable wind side. This adjustment directly targets the main direction of wind and sand invasion and enhances the protection capacity of the area. Wider sand barrier units can more effectively intercept and slow down the large amount of wind and sand brought by the dominant wind, reducing its impact and damage to subsequent sand control facilities. Wider sand barrier units also have a stronger sand fixation ability and can provide a relatively stable environment for the growth of more vegetation, so vegetation units are added on the dominant wind side.

[0024] Preferably, as an improvement, the sand barrier unit on the windward side and the sand-blocking fence are spaced 20 m apart.

[0025] The beneficial effect of this improvement is that the interval length helps to optimize the wind field distribution, reduce eddies and turbulence caused by excessive wind resistance, and reduce the negative impact on the surrounding environment.

[0026] Preferably, as an improvement, the plant species of the vegetation unit are one or more of Caragana korshinskii, Tamarix tamarisk, Calligonum mongolica and Cnidium monnieri.

[0027] The beneficial effects of this improvement are: these plant species have strong resistance to drought, salinity and wind and sand, and are suitable for growing in sandy environments; they can quickly cover the surface, reduce wind erosion, fix quicksand, and at the same time improve soil structure, increase soil fertility, and create conditions for the growth of other plants; these plants will form unique landscape effects during their growth and improve the ecological environment quality around the roads.

[0028] Preferably, as an improvement, the sand transport unit is 8 m wide and the vegetation unit is not less than 20 m wide.

[0029] The beneficial effects of this improvement are: the 8m wide sand transport unit is spacious enough to smoothly guide the passage of wind and sand and reduce accumulation; the vegetation unit not less than 20m wide provides ample growth space for plants, which is conducive to the development of plant roots and the performance of sand fixation.

[0030] Preferably, as an improvement, the height of the sand barrier unit is 1 m, and the sand barrier is 1 m wide and 1.5 m high.

[0031] The beneficial effects of this improvement are: the 1m high sand barrier unit can intercept most of the low-flying sand particles and allow the sand particles to fall into the grid, and this height can better shelter vegetation units whose roots have not yet matured.

[0032] Preferably, as an improvement, the sand barrier unit on the dominant wind side is 20 m wide, and the sand barrier unit on the variable wind side is 10 m wide.

[0033] The beneficial effect of this improvement is that, because the dominant wind is a long-term high wind volume, sand barrier units of different widths are set according to the dominant wind side and the variable wind side of the sandstorm, achieving targeted protection. In addition, this design not only ensures the protection effect, but also takes into account the optimal use of resources and avoids unnecessary waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0035] Figure 2 The following is a flowchart of the adjustment module according to an embodiment of the present invention.

[0036] Figure 3 It is a structural schematic diagram of the sand-blocking fence of the present invention in the lowest state.

[0037] Figure 4 It is a structural schematic diagram of the highest state of the sand-blocking fence of the present invention. DETAILED DESCRIPTION

[0038] The following is further described in detail through specific implementation methods:

[0039] The figure marks in the drawings of the specification include: road 1, sand-blocking fence 2, upper fence 3, lower fence 4, supporting column 5, sand-blocking net 6, sensor unit 7, control unit 8, sliding assembly 9, inner sand-blocking embankment 10, outer sand-blocking embankment 11, sand transport unit 12, vegetation unit 13 and sand barrier unit 14.

[0040] Example

[0041] Basically as attached Figure 1 The present application discloses a desert highway engineering sand prevention system, including a sand prevention module and a regulating module. The sand prevention module includes a sand blocking unit, a sand transport unit 1212, a vegetation unit 13 and a sand barrier unit 14.

[0042] As attached Figure 3 and attached Figure 4 As shown, the sand blocking unit includes a sand blocking fence 2 and a sand blocking embankment. The sand blocking fence 2 includes an upper fence 3 and a lower fence 4. The upper fence 3 and the lower fence 4 are arranged in parallel. Each fence includes two supporting columns 5 and a sand blocking net 6. The sand blocking net 6 covers between the two supporting columns 5 and is fixedly connected to the supporting columns 5. The two supporting columns 5 of the lower fence 4 are inserted into the ground and are fixedly connected to the ground. A sliding component 9 for driving the upper fence 3 to slide along the vertical direction of the lower fence 4 is provided between the upper fence 3 and the lower fence 4. The sliding component 9 makes the overall height of the sand blocking fence 2 adjustable. When the height of the sand blocking fence 2 needs to be lowered, the upper fence 3 moves down, and the upper fence 3 gradually overlaps with the lower fence 4; when the height of the sand blocking fence 2 needs to be lowered, the upper fence 3 moves up, and the upper fence 3 and the lower fence 4 are spread upward.

[0043] The sliding assembly 9 can be one of the following structures: a slide rail and a slider structure, two parallel slide rails are respectively installed on the two supporting columns 5 of the lower fence 4, and the slide rails extend in the vertical direction. Slide blocks matching the slide rails are respectively installed at the bottom of the two supporting columns 5 of the upper fence 3. The slider should be able to fit tightly on the slide rail and allow free sliding along the slide rail. An electric motor and a transmission device (such as a screw, a gear box, etc.) are installed to realize the up and down movement of the upper fence 3 by controlling the forward and reverse rotation of the motor.

[0044] The ball screw structure is a structure in which a ball screw is installed inside or outside the support column 5 of the lower fence 4, and the screw is arranged in the vertical direction. The nut of the ball screw is fixedly connected to the bottom of the support column 5 of the upper fence 3. The ball screw is driven to rotate by an electric motor. Since the nut is fixed to the upper fence 3, the rotation of the screw is converted into a linear motion of the upper fence 3, and the upper and lower sliding is realized.

[0045] The hydraulic or pneumatic cylinder structure fixes the cylinder body of the hydraulic or pneumatic cylinder on the supporting column 5 of the lower fence 4, and the cylinder body is arranged in the vertical direction. The piston rod of the hydraulic or pneumatic cylinder is connected to the bottom of the supporting column 5 of the upper fence 3. By controlling the pressure change of the hydraulic or pneumatic system, the piston rod is extended and retracted in the cylinder body, thereby driving the upper fence 3 to slide up and down.

[0046] For the convenience of describing the sliding assembly 9, the structure of the slide rail and the slider is taken as the structure of the sliding assembly 9 in this embodiment. The sand-blocking fences 2 are arranged in groups of two, and a group of sand-blocking fences 2 is provided on the main wind direction side and the wind direction side, that is, the sand-proof system has a total of four sand-blocking fences 2. The two sand-blocking fences 2 in a group are spaced 20m apart, and the highest height of a single sand-blocking fence 2 is 2.5m, and the lowest height of a single sand-blocking fence 2 is 1m. When the sand-blocking fence 2 is at the lowest height, the bottom part of the upper fence 3 is buried under the ground.

[0047] As attached Figure 2 As shown, the adjustment module includes a sensor unit 7 and a control unit 8, and the control unit 8 is in communication with the sensor unit 7; the sensor unit 7 is mainly used to sense wind direction and wind speed, which are important bases for evaluating the wind and sand conditions. The control unit 8 is responsible for receiving the data collected by the sensor unit 7, processing the data and calculating the current wind and sand conditions, and then issuing adjustment instructions to the sliding components 9 of a single or multiple sand-blocking fences 2.

[0048] The sensing unit 7 includes a wind direction sensor and a wind speed sensor. The wind direction sensor can be a combination of a wind vane and a potentiometer or an encoder. The rotation of the wind vane drives the potentiometer or encoder to generate an electrical signal, thereby measuring the wind direction. Wind speed sensors include cup type, hot wire type, ultrasonic type, etc. Among them, the cup type wind speed sensor drives the internal generator to generate an electrical signal through the rotation of the wind cup, and the frequency of the electrical signal is proportional to the wind speed; the hot wire type wind speed sensor uses the principle of heat dissipation of the hot wire in the air flow to calculate the wind speed by measuring the change in the resistance of the hot wire; the ultrasonic wind speed sensor uses the relationship between the propagation speed of ultrasonic waves in the air and the wind speed to measure the wind speed.

[0049] The control unit 8 includes a microcontroller, a data processing module and a communication interface; the microcontroller, as the core of the control unit 8, is responsible for receiving data from the sensor unit 7, executing the control algorithm of the relationship between the collected data and the height of each sand barrier 2, and issuing adjustment instructions to the sliding component 9. The data processing module is connected to the microcontroller and is responsible for filtering, amplifying, converting and other processing of the raw data collected by the sensor unit 7 to improve the accuracy and reliability of the data. The control unit 8 needs to be equipped with a corresponding communication interface to connect with the leaflet unit for data transmission.

[0050] The relationship between the data collected by the sensor unit 7 and the height of each sand barrier 2 can be trained using a machine learning algorithm, such as a neural network, a decision tree, a random forest, etc., to train a large amount of historical data to learn the complex relationship between wind speed, wind direction and the height of the sand barrier 2. The real-time collected wind speed and wind direction data are input into the trained model to predict the optimal height of the sand barrier 2. This is used as the basis for issuing adjustment instructions.

[0051] The sensing unit 7 collects wind direction and wind speed data in real time, and sends the data to the control unit 8 through the communication interface. After receiving the data sent by the sensing unit 7, the control unit 8 performs filtering, amplification, conversion and other processing to obtain accurate wind direction and wind speed information. According to the processed wind direction and wind speed data, combined with the preset wind and sand assessment algorithm or model, the current wind and sand conditions are calculated. According to the wind and sand condition assessment results, the control unit 8 makes a control decision to determine whether it is necessary to adjust the height of the sand barrier fence 2 and the specific adjustment range. The control unit 8 sends an adjustment instruction to the sliding component 9 of a single or multiple sand barrier fences 2 through the communication interface. After receiving the adjustment instruction, the sliding component 9 drives the upper fence 3 to slide up and down relative to the lower fence 4 to adjust the height of the sand barrier fence 2. During the adjustment process or after the adjustment is completed, the sensing unit 7 continues to monitor the changes in wind direction and wind speed, and feeds the data back to the control unit 8 for continuous evaluation and adjustment.

[0052] However, when the sand-blocking fence 2 is in the daily dominant wind direction, the sand-blocking fence 2 on the dominant wind side maintains a height of 2.5 m, and the height on the variable wind side includes 1 m.

[0053] The sand barrier is located on the dominant wind side, with a width of 1m and a height of 1.5m. The sand barrier includes an inner sand barrier 10 and an outer sand barrier 11. The inner sand barrier 10 is arranged between two sand barrier fences 2, and the outer sand barrier 11 is arranged outside the two sand barrier fences 2 and away from the road 1. The sand transport unit 12, the vegetation unit 13, the sand barrier unit 14, and the sand barrier unit are arranged in sequence from the side of the road 1 to the outside. Among them, only the sand barrier unit on the dominant wind side is provided with a sand barrier, while the sand barrier unit on the variable wind side is not provided with a sand barrier.

[0054] The sand transport unit 12 is a smooth section used to prevent wind and sand accumulation. The smooth section can use low-cost chemical synthetic materials to solidify the shoulder slope, and use chemical sand fixation agents to consolidate the sand surface within a certain width on both sides of the slope to form a smooth section. The width of the sand transport unit 12 is 8m.

[0055] The vegetation unit 13 is a sand-control belt planted with drought-resistant plants. The plant species of the vegetation unit 13 are one or more of Caragana korshinskii, Tamarix tamarisk, Calligonum mongolica and Populus chinensis. The width of the vegetation unit 13 is not less than 20 m.

[0056] The sand barrier unit 14 is a plurality of square grids surrounded by gauze distributed in an array, the height of the sand barrier unit 14 is 1m, and the square grid is a plurality of squares surrounded by a plurality of mesh surfaces parallel or perpendicular to each other, each square grid is open at the top and surrounded by mesh surfaces on all sides. The mesh surface of the square grid is flat and smooth, the longitude and latitude lines are clear, and the weaving is tight, which can effectively block the invasion of wind and sand.

[0057] The width of the sand barrier unit 14 on the dominant wind side is greater than that on the variable wind side. The sand barrier unit 14 on the dominant wind side is 20m wide, and the sand barrier unit 14 on the variable wind side is 10m wide. A vegetation unit 13 is provided between the sand barrier unit 14 on the dominant wind side and the sand barrier fence 2, while no vegetation unit 13 is provided between the sand barrier unit 14 on the variable wind side and the sand barrier fence 2, which is a 20m interval blank area.

[0058] When the sand flow is the dominant wind direction:

[0059] The wind-sand flow first directly faces and reaches the sand barrier on the dominant wind side. The sand barrier (outer sand barrier 11) serves as the first line of defense, effectively hindering the further movement of the wind-sand flow and significantly changing its speed and direction. Some sand particles are thrown upward at the slope and shoulder of the sand barrier. These sand particles are dispersed and slowed down in the air, thereby reducing the energy that directly impacts subsequent sand control facilities.

[0060] Then, the wind and sand flow encounters the sand barrier 2. If the sand barrier 2 has been adjusted to the maximum height of 2.5m according to the instructions of the sensor unit 7 and the control unit 8, a solid barrier is formed. This barrier can not only effectively block the high-level wind and sand, but also effectively block the low-level wind and sand that try to cross the sand barrier, further reducing the impact of the wind and sand on the subsequent areas. The inner sand barrier 10 and the second sand barrier 2 further weaken the effect of the wind and sand flow on this basis.

[0061] Subsequently, the wind-sand flow passes through the vegetation unit 13, where the drought-resistant plants (with their dense branches, leaves and roots) absorb and fix a large amount of sand particles, effectively reducing the wind speed and the kinetic energy of the wind-sand.

[0062] The wind and sand flow continues to move forward and enters the high-solid sand barrier area. These square grid arrays surrounded by the gauze further fix the remaining wind and sand, and accumulate the falling sand particles in the grid to prevent them from continuing to spread. At the same time, the open top design of the grid is conducive to guiding the wind and sand flow to pass through, reducing wind resistance. The second layer of vegetation units 13 then acts on the wind and sand.

[0063] Finally, the wind and sand flow encounters the smooth sections on both sides of Road 1. These sections are solidified by chemical synthetic materials and have a smooth surface. They can effectively guide the wind and sand flow along the edge of the road surface, avoiding the accumulation of wind and sand on the desert highway and ensuring the smooth flow of the highway.

[0064] When the wind and sand flow is variable in direction:

[0065] In the face of sand flow with variable wind direction, the sand barrier 2 comes into play first. The sensor unit 7 monitors the wind direction change in real time, and the control unit 8 quickly calculates and issues adjustment instructions based on the data, so that the height of the sand barrier 2 is automatically adjusted to adapt to the current wind direction and wind speed. This flexibility ensures that no matter how the wind direction changes, the sand barrier 2 can maintain the optimal height to block the sand to the greatest extent.

[0066] Afterwards, the wind and sand flow also passed through the high sand-fixing sand barrier area. These grid-like sand barrier structures were still able to play their role in sand fixation. No matter which direction the wind and sand came from, they could be effectively blocked and fixed.

[0067] Vegetation unit 13 continues to play its role of sand absorption and beautification, absorbing and fixing sand through the branches, leaves and roots of plants, while also adding a touch of green vitality to the desert highway.

[0068] Finally, the smooth section still bears the heavy responsibility of transporting sand. No matter where the wind and sand flow, they can be effectively guided and transported to areas far away from the highway, ensuring the safety and smoothness of the highway. The entire sand control system can still maintain an efficient and stable operating state under variable wind direction conditions.

[0069] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A desert highway engineering sand control system, the two sides of the road are the dominant wind side and the variable wind side respectively, characterized in that: It includes a sand prevention module and an adjustment module. The sand prevention module includes a sand barrier. The sand barrier includes an upper fence and a lower fence. The upper fence and the lower fence are arranged in parallel. Each fence includes two supporting columns and a sand barrier net. The sand barrier net is covered between the two supporting columns and is fixedly connected to the supporting columns. A sliding component is provided between the upper fence and the lower fence for driving the upper fence to slide along the vertical direction of the lower fence. The sand-blocking fences are arranged in groups of two, with one group of sand-blocking fences being arranged on the dominant wind side and one group of sand-blocking fences being arranged on the variable wind side. The adjustment module comprises a sensor unit for sensing wind direction and wind speed, and a control unit for controlling the relative positions of the upper fence and the lower fence according to the wind and sand conditions. The control unit is communicatively connected with the sensor unit, receives data collected by the sensor unit, processes the data and calculates the current wind and sand conditions, and issues adjustment instructions to the sliding components of the single or multiple sand-blocking fences according to the calculation.

2. A desert highway engineering sand control system according to claim 1, characterized in that: The sand prevention module includes a sand barrier, which is located on the dominant wind side. The sand barrier includes an inner sand barrier and an outer sand barrier, wherein the inner sand barrier is arranged between the two sand barrier fences, and the outer sand barrier is arranged outside the two sand barrier fences and away from the road.

3. A desert highway engineering sand control system according to claim 2, characterized in that: The sand prevention module also includes a sand transport unit, a vegetation unit and a sand barrier unit, which are arranged in sequence from the side of the road to the outside. The sand transport unit is a smooth section used to prevent wind and sand accumulation, the vegetation unit is a sand prevention belt planted with drought-resistant plants, and the sand barrier unit is a plurality of square grids surrounded by gauze distributed in an array.

4. A desert highway engineering sand control system according to claim 3, characterized in that: The two sand-blocking fences in a group are spaced 20 m apart, the highest height of a single sand-blocking fence when raised is 2.5 m, and the lowest height of a single sand-blocking fence when lowered is 1 m.

5. A desert highway engineering sand control system according to claim 4, characterized in that: The width of the sand barrier unit on the dominant wind side is greater than that of the sand barrier unit on the variable wind side. The sand-blocking fence is located on the side of the sand barrier unit away from the road. A vegetation unit is provided between the sand barrier unit on the dominant wind side and the sand-blocking fence.

6. A desert highway engineering sand control system according to claim 5, characterized in that: The sand barrier unit on the windward side is spaced 20m apart from the sand-blocking fence.

7. A desert highway engineering sand control system according to claim 6, characterized in that: The plant species of the vegetation unit are one or more of Caragana korshinskii, Tamarix tamarisk, Calligonum mongolica and Populus chinensis.

8. The desert highway engineering sand control system according to claim 7, characterized in that: The width of the sand transport unit is 8m, and the width of the vegetation unit is not less than 20m.

9. A desert highway engineering sand control system according to claim 8, characterized in that: The height of the sand barrier unit is 1m, and the sand barrier is 1m wide and 1.5m high.

10. A desert highway engineering sand control system according to claim 9, characterized in that: The sand barrier unit on the dominant wind side is 20 meters wide, and the sand barrier unit on the variable wind side is 10 meters wide.

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