A sand barrier structure for flow sand management
By designing a sand barrier structure consisting of a sand-blocking layer, a cover layer, and a pressing layer in the management of shifting sand dunes, and combining it with support columns and flexible vegetation sand-fixing belts, the problems of high cost and short lifespan of existing sand barriers have been solved, achieving the effects of stable sand fixation and promoting plant growth.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA AUTONOMOUS REGION ACAD OF FORESTRY SCI
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-26
AI Technical Summary
Existing sand barrier structures suffer from high costs, short service life, and poor control effects in the management of shifting sand dunes.
A sand barrier structure was designed, including a sand-blocking layer, a cover layer, and a pressing layer. Support columns penetrate these layers and are inserted into the surface of the sand. The two sides of the sand-blocking layer are folded upward to form a U-shaped trough, which is fixed to the support columns by connectors. Combined with flexible sand-fixing belts of vegetation, a composite sand barrier is formed, which is adaptable to different wind directions and sand conditions.
It improves the structural stability and wind resistance of sand barriers, extends their service life, promotes plant growth, enhances sand fixation, reduces costs, and adapts to complex sandy environments.
Smart Images
Figure CN224412498U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sand barrier technology, and more specifically to a sand barrier structure for managing shifting sand dunes. Background Technology
[0002] In the management of shifting sand dunes, sand barriers are widely used as an important sand-fixing measure. However, existing types of sand barriers, such as flat sand barriers and vertical sand barriers, although they can play a role in sand fixation and prevention to a certain extent, have many technical problems.
[0003] Flat sand barriers mainly utilize materials such as firewood, grass, pebbles, clay, and sand-fixing agents to cover or spray on the sand surface. By covering the sand surface, they can isolate the sand from wind and sand. Although they can fix the surface sand particles, they cannot block the passing sandstorms. At the same time, this type of sand barrier requires a large amount of covering materials and manual installation, which increases costs.
[0004] Vertical sand barriers (such as nylon mesh walls) block wind and sand flow through vertical barriers, promoting sand deposition. However, their bottoms are easily eroded by wind, creating suspended areas that can lead to structural collapse, reduce service life, and affect the effectiveness of sand control.
[0005] Therefore, how to provide a sand barrier structure that is structurally stable, cost-effective, and can improve the governance effect is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0006] In view of this, the present invention provides a sand barrier structure for the management of mobile sand dunes, aiming to solve the above-mentioned technical problems.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A sand barrier structure for managing mobile sand dunes, comprising:
[0009] A sand layer, on which a covering layer is laid, and on which a pressing material layer is laid;
[0010] Multiple support columns are arranged at intervals, and the bottom end of each support column penetrates the overburden layer, the cover layer and the sand-blocking layer and is inserted into the sandy surface layer.
[0011] The sand-blocking layer has two sides folded upwards along its length to form a U-shaped groove, and the folded portion of the sand-blocking layer is fixed to the support column by a connector.
[0012] Through the above technical solution, this utility model provides a sand barrier structure for the management of mobile sand dunes. The supporting column penetrates the overburden layer, the covering layer, and the sand-blocking layer to form a rigid anchor body, which can block wind erosion channels and prevent the formation of wind erosion pits. The sand-blocking layer folds into a U-shaped trough, which intercepts the passing wind and sand flow, increasing the deposition rate. The sand surface is covered by the trough wall to fix the flowing sand and increase the coverage of the sand-fixing area. The U-shaped trough forms an integral frame with the supporting column through connectors, which improves the wind load resistance and structural stability, thereby achieving the purpose of extending the service life and improving the management effect.
[0013] Preferably, in the above-mentioned sand barrier structure for controlling shifting sand dunes, the number of sand-blocking layers is multiple sets, and the multiple sets of sand-blocking layers are arranged at intervals. The multiple sets of spaced-out sand-blocking layers form a progressive sand-dust interception system, which reduces the speed of sand dune movement and increases the vegetation recovery cycle.
[0014] Preferably, the sand barrier structure for managing shifting sand dunes further includes a flexible plant-based sand-fixing strip, which is laid on the surface of the sand dunes between two adjacent sand-blocking layers. The U-shaped mesh spatial structure design enables directional sand deposition, while the unconnected arrangement of branches in the deposition area completes a closed-loop sand-fixing system. The U-shaped trough structure formed by the flexible plant-based sand-fixing strip and the sand-blocking layers creates a composite sand barrier that combines sand fixation, sand blocking, and dune leveling functions, effectively controlling wind erosion on windward slopes and providing protection for plant-based sand fixation. Furthermore, the unconnected design eliminates the risk of stress tearing.
[0015] Preferably, in the aforementioned sand barrier structure for managing shifting sand dunes, the flexible plant-based sand-fixing strip is formed by weaving or binding plant branches. The degradation of the plant branches increases the soil's organic matter content, promoting the natural germination of native vegetation.
[0016] Preferably, in the aforementioned sand barrier structure for controlling shifting sand dunes, the length direction of the sand-blocking layer is perpendicular to the wind direction. When windblown sand impacts the U-shaped channel wall perpendicularly, kinetic energy is converted into potential energy in the sand particles, increasing the sedimentation rate compared to a parallel wind direction layout.
[0017] Preferably, in the above-mentioned sand barrier structure for controlling mobile sand dunes, the sand-blocking layer is a flexible mesh. The mesh material is permeable, and due to the disturbance effect of the mesh on the airflow, the airflow forms multiple low-speed vortices when passing through the mesh, and forms a low-wind area near the ground surface, reducing the near-surface wind speed, forming a weak wind erosion zone, and preventing the erosion of passing wind and sand.
[0018] Preferably, in the aforementioned sand barrier structure for managing mobile sand dunes, the covering layer is a flexible film. This structure can suppress moisture evaporation from the sand surface and reduce dust generation.
[0019] Preferably, in the above-mentioned sand barrier structure for managing mobile sand dunes, the covering layer is a sandy soil layer. This method uses locally sourced materials at zero cost, and after compaction, it integrates with the sand dunes, further securing the mesh and mulch film to prevent them from being blown away or moved by wind and sand, thus improving resistance to erosion.
[0020] Preferably, in the aforementioned sand barrier structure for managing shifting sand dunes, the connecting components are metal wires or nylon cable ties. Metal wires or nylon cable ties can easily fix components such as mesh netting and mulch film to the supporting columns, forming a stable sand barrier structure. At the same time, these materials also possess a certain degree of flexibility and durability, enabling them to adapt to the dynamic changes in the sand dunes.
[0021] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a sand barrier structure for the management of shifting sand dunes, which has the following beneficial effects:
[0022] 1. This utility model effectively blocks the movement of sand by setting up a sand-blocking layer, a covering layer, and a pressing layer. The sand-blocking layer can reduce the erosion of the sandy surface by wind, the covering layer further reduces the starting speed of the sand, and the pressing layer increases the stability of the overall structure, so that the sand barrier can be firmly fixed in the windy and sandy environment, reducing the movement of sand dunes, and playing a key role in controlling shifting sand dunes.
[0023] 2. The multiple support columns in this utility model penetrate the overburden layer, the cover layer, and the sand-blocking layer, and are inserted into the surface of the sand, providing a solid foundation for the entire sand barrier structure. The two sides of the sand-blocking layer are folded upward to form a U-shaped groove and fixed to the support columns with connectors. This structural design enhances the integrity and wind resistance of the sand barrier, making it less susceptible to damage in complex wind and sand environments and enabling it to play a stable role in controlling desertification over a long period of time.
[0024] 3. When this utility model incorporates multiple sets of sand-blocking layers arranged at intervals, and is combined with flexible plant-based sand-fixing strips, it creates favorable conditions for plant growth. The flexible plant-based sand-fixing strips, formed by weaving or binding plant branches, provide an initial environment conducive to plant growth, promoting the rooting and growth of psammophytes. As the plants grow, their root systems further stabilize the sand, forming a "sand barrier-plant" joint sand-fixing model, promoting the restoration and reconstruction of the sandy land ecosystem.
[0025] 4. The design of the sand-blocking layer, with its length perpendicular to the wind direction, maximizes the sand-blocking effect and is suitable for sandy environments with different wind directions. Furthermore, the sand-blocking layer uses flexible mesh, the covering layer is a flexible film, and the covering layer is sand. These materials possess a certain degree of flexibility, enabling them to adapt to the unevenness of the sandy surface and the dynamic changes in wind and sand, allowing the sand barrier structure to work effectively under various complex sandy conditions. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0027] Figure 1 The attached figure is a structural schematic diagram of the sand barrier structure for managing mobile sand dunes provided by this utility model;
[0028] Figure 2 The attached image is... Figure 1 Enlarged view of section A in the attached figure;
[0029] Figure 3 The attached figure is a schematic diagram of the sand-blocking layer, covering layer, pressing layer and supporting column provided by this utility model in a flat state;
[0030] Figure 4 The attached image is... Figure 3 Top view of the attached diagram;
[0031] Figure 5 The attached figure is a schematic diagram of the structure of the sand-blocking layer and the flexible plant sand-fixing belt provided by this utility model.
[0032] in:
[0033] 1-Sand-blocking layer; 2-Covering layer; 3-Covering material layer; 4-Supporting column; 5-Connector; 6-Plant flexible sand-fixing strip; 6-U-shaped clip. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] See appendix Figure 1 To be continued Figure 5 This utility model discloses a sand barrier structure for the management of shifting sand dunes, comprising:
[0036] Sand-blocking layer 1, a covering layer 2 is laid on the sand-blocking layer 1, and a pressing layer 3 is laid on the covering layer 2;
[0037] Multiple support columns 4 are arranged at intervals, and the bottom end of each support column 4 penetrates the overburden layer 3, the cover layer 2 and the sand-blocking layer 1 and is inserted into the surface of the sandy land.
[0038] The sand-blocking layer 1 has two sides folded upwards along its length to form a U-shaped trough, and the folded part of the sand-blocking layer 1 is fixed to the support column 4 by the connector 5.
[0039] To further optimize the above technical solution, the number of sand-blocking layers 1 is multiple, and the multiple sand-blocking layers 1 are arranged at intervals.
[0040] To further optimize the above technical solution, a flexible plant sand-fixing belt 6 is also included, which is laid on the surface of the sand between two adjacent sand-fixing layers 1.
[0041] To further optimize the above technical solution, the flexible plant sand-fixing belt 6 is fixed by U-shaped clips 7.
[0042] To further optimize the above technical solution, the plant-based flexible sand-fixing belt 6 is formed by weaving or binding plant branches.
[0043] To further optimize the above technical solution, the length direction of the sand-blocking layer 1 is perpendicular to the wind direction.
[0044] To further optimize the above technical solution, the sand-blocking layer 1 is a flexible mesh.
[0045] To further optimize the above technical solution, the sand-blocking layer 1 uses white, anti-aging polyethylene (PE) environmentally friendly mesh. The mesh is produced using a plain weave process, with a yarn diameter of 0.18mm. Each pound of yarn produces a mesh sheet 1.0m wide and 6m long, meaning each pound of yarn covers an area of 6m². The mesh has a mesh size of 18-20 meshes, each mesh sheet is 50-100 meters long and 1.0-1.2 meters wide, with a ventilation rate greater than 60%.
[0046] To further optimize the above technical solution, the support column 4 can be a rectangular wooden pile with a specification of 42cm×4cm×100cm, or a cylindrical structure can be adopted as needed.
[0047] To further optimize the above technical solution, the bottom of the support column 4 is pointed (10cm in length), which makes it easier to drive it into the flowing sand and soil from the center of the mesh during construction; the interval between two adjacent support columns 4 is 5m, and the specific interval distance is adjusted according to the actual situation.
[0048] To further optimize the above technical solution, agricultural mulch film is used for the covering layer 2.
[0049] To further optimize the above technical solution, the overlay layer 3 is a sandy soil layer, which can be sourced locally.
[0050] To further optimize the above technical solution, connector 5 is made of metal wire or nylon cable tie.
[0051] After spreading out the sand-blocking layer 1 (flexible mesh), spread the covering layer 2 on top of the sand-blocking layer 1, and fill the covering layer (sand) on top of the covering layer 2 (mulch film). Then, drive the support column 4 through the covering layer 3, the covering layer 2 and the sand-blocking layer 1 into the ground to a depth of 40-50cm. Finally, fold the two sides of the sand-blocking layer 1 upwards along its length to form a U-shaped trough, and fix it to the support column 4 with a 1mm diameter iron wire to complete the formation and fixation of the vertical sand-blocking U-shaped mesh sand barrier.
[0052] The flexible sand-fixing strip 6 uses fresh Haloxylon ammodendron branches with a diameter of 1-3cm. The branches are laid flat on the surface of the sand between two adjacent sand-fixing layers 1. At the same time, the connected branches are twisted together with 1mm (20 gauge) iron wire to form a long strip. Every 5m, the Haloxylon ammodendron branches are fixed with U-shaped 2.8mm (12 gauge) iron wire nails to prevent them from being damaged by strong winds.
[0053] Depending on the slope differences and placement of the mobile dunes, a composite sand barrier consisting of Haloxylon ammodendron branches and vertical mesh netting is created, combining sand-fixing, sand-blocking, and dune-leveling functions. The vertical mesh netting is typically placed at the bottom and middle of the mobile dunes, or along the dune ridge, to intercept passing windblown sand and raise the dune ridge, thus slowing down the forward movement of the dunes. Meanwhile, the Haloxylon ammodendron branches are laid flat on one or both sides of the vertical mesh netting, forming a composite sand barrier that combines sand-fixing, sand-blocking, and dune-leveling capabilities, controlling wind erosion on windward slopes and providing protection for vegetation-based sand fixation.
[0054] This sand barrier structure is designed to address the many disadvantages of mobile sand dune barriers, such as high cost, short lifespan, and large material consumption. Depending on the location of installation, it also takes into account the functions of sand fixation, sand blocking, and sand dune leveling.
[0055] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.
[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A sand barrier structure for managing shifting sand dunes, characterized in that, include: A sand-blocking layer (1) is provided, a covering layer (2) is provided on the sand-blocking layer (1), and a pressing layer (3) is provided on the covering layer (2); Multiple support columns (4) are arranged at intervals, and the bottom end of each support column (4) penetrates the overburden layer (3), the cover layer (2) and the sand-blocking layer (1) and is inserted into the sandy surface. The sand-blocking layer (1) has two sides folded upwards along its length to form a U-shaped groove, and the folded part of the sand-blocking layer (1) is fixed to the support column (4) by a connector (5).
2. The sand barrier structure for managing shifting sand dunes according to claim 1, characterized in that, The number of sand-blocking layers (1) is multiple sets, and the multiple sets of sand-blocking layers (1) are arranged at intervals.
3. A sand barrier structure for managing shifting sand dunes according to claim 2, characterized in that, It also includes a plant-based flexible sand-fixing strip (6), which is laid on the surface of the sand between two adjacent sand-fixing layers (1).
4. A sand barrier structure for managing shifting sand dunes according to claim 3, characterized in that, The plant-based flexible sand-fixing strip (6) is fixed by a U-shaped clip (7).
5. A sand barrier structure for managing shifting sand dunes according to claim 3, characterized in that, The plant-based flexible sand-fixing strip (6) is formed by weaving or binding plant branches.
6. A sand barrier structure for managing shifting sand dunes according to claim 1, characterized in that, The length of the sand-blocking layer (1) is perpendicular to the wind direction.
7. A sand barrier structure for managing shifting sand dunes according to claim 1, characterized in that, The sand-blocking layer (1) is a flexible mesh.
8. A sand barrier structure for managing shifting sand dunes according to claim 1, characterized in that, The covering layer (2) is a flexible film.
9. A sand barrier structure for managing shifting sand dunes according to claim 1, characterized in that, The overburden layer (3) is a sandy soil layer.
10. A sand barrier structure for managing shifting sand dunes according to claim 1, characterized in that, The connector (5) is a metal wire or nylon cable tie.