Flexible blanket type sand stabilization device

Abstract

The invention discloses a flexible blanket type sand fixing device which comprises sand fixing plates, the sand fixing plates comprise a plurality of first sand fixing plates, a plurality of second sand fixing plates and a plurality of third sand fixing plates which are movably connected together, the first sand fixing plates are connected to anchor piles, gaps are formed between the adjacent sand fixing plates, and all the sand fixing plates jointly form a flexible plate type structure capable of being flexibly bent. The lower surface of the flexible plate type structure can be attached to the sand body surface of the hydro-fluctuation belt; when the sand body is submerged by water, the sand stabilization plates float on the water surface; when the water surface is lower than the surface of the sand body, the sand stabilization plates are attached to the surface of the sand body. The flexible blanket type sand stabilization device can effectively stabilize sand in the water rising period, has the advantage of long sand stabilization time, can adaptively adjust sand stabilization according to the water level and water volume change of the hydro-fluctuation belt, can adapt to the water level change, can ensure the stability of sand stabilization blocks attached to the sand body, and improves the sand stabilization efficiency. The sand stabilizing device is favorable for effectively playing a role in stabilizing sand for a long time in a sand beach with larger wind power, and more importantly, the sand stabilizing device can quickly play a role in stabilizing sand after the water level drops below the surface of the sand body.

Description

Technical Field

[0001] The invention belongs to the technical field of sand fixation in drawdown zones, and in particular relates to a flexible blanket-type sand fixation device. Background Art

[0002] Existing sand fixation technologies (such as physical sand fixation, chemical sand fixation, and biological sand fixation) have many problems and shortcomings when applied to river beaches or reservoir drawdown zones. Among them, in the physical sand fixation method, the sandbag stacking has poor stability, is easily washed away by water flow, and is damaged by natural factors, and the construction cost is high and difficult; sand retaining walls will affect the ecology and block natural ecological processes, while the maintenance cost is high and it is difficult to repair after damage; chemical sand fixation methods will cause environmental pollution, and the chemical composition of its binder may pollute river water and soil, and the sand fixation time is short, the effect weakens over time, and the reprocessing operation is complicated and costly; in the biological sand fixation method, sand-fixing plants are restricted by the harsh environment of the beach, have difficulty in growth, low survival rate, and slow effect, and are easily destroyed by disasters before the plants form an effective sand-fixing community.

[0003] One of the technical difficulties in the process of sand fixation in the drawdown zone is that it is difficult to effectively fix sand during the flood period (when the water flows through the sand body but does not completely submerge it), and the corresponding sand fixation facilities are more likely to be damaged after the water completely submerges the sand body, resulting in a short sand fixation period. Therefore, how to effectively fix sand during the flood period and improve the sand fixation period is a problem that needs to be solved. Summary of the invention

[0004] At least in view of the problems mentioned in the background technology, one of the objectives of the present invention is to provide a flexible blanket-type sand-fixing device.

[0005] The present invention adopts the following technical solution.

[0006] A flexible blanket-type sand-fixing device comprises sand-fixing plates, wherein the sand-fixing plates comprise a first sand-fixing plate, a second sand-fixing plate and a third sand-fixing plate which are movably connected together, wherein the first sand-fixing plate is connected to an anchor pile, and there is a gap between adjacent sand-fixing plates, and all the sand-fixing plates together constitute a flexible plate structure which can be flexibly bent, and the lower surface of the flexible plate structure can be attached to the surface of the sand body in the drawdown zone.

[0007] In the present invention, when water submerges the sand body, the sand fixing board floats on the water surface; when the water surface is lower than the surface of the sand body, the sand fixing board adheres to the surface of the sand body.

[0008] Furthermore, cones are provided on the lower surfaces of the second sand-fixing plate and the third sand-fixing plate. When the water level is lower than the surface of the sand body, the cones can be inserted into the sand body under the action of gravity.

[0009] As a preferred solution, the cone is made of metal material, and the sand-fixing plate is a hollow structure made of PE material; or, both the sand-fixing plate and the cone are hollow structures made of PE material, and the inner cavity of the cone is filled with counterweight material.

[0010] As a more preferred solution, a single cone is provided in the middle of the lower surface of the second sand-fixing plate, and a plurality of cones are evenly arranged on the lower surface of the third sand-fixing plate.

[0011] Furthermore, adjacent sand-fixing plates are connected by elliptical rings or ropes, and the first sand-fixing plate is connected to the anchor pile by a chain or rope.

[0012] As a preferred solution, the gap between adjacent sand-fixing plates is 10-15 mm, and the height of the cone is 8-12 cm.

[0013] As a preferred solution, a third sand-fixing plate is arranged between every two second sand-fixing plates in the same row. The second sand-fixing plates and the third sand-fixing plates in the same column are both curved structures. Alternatively, the first sand-fixing plates are arranged in the first row close to the anchor piles, the third sand-fixing plates are arranged in the last row away from the anchor piles, and the second sand-fixing plates are arranged between the first sand-fixing plates and the third sand-fixing plates.

[0014] Furthermore, anchor piles are arranged on the bank slope of the drawdown zone so that the flexible plate structure presents an overall concave arc structure during the sand fixation process.

[0015] Beneficial effects: The flexible blanket-type sand-fixing device of the present invention can not only effectively fix sand during the flood period, but also has the advantage of a long sand-fixing time, and can also adaptively adjust the sand-fixing according to the changes in the water level and water volume in the drawdown zone, which can not only adapt to the changes in the water level, but also ensure the stability of the sand-fixing blocks attached to the sand body, which is conducive to long-term and effective sand-fixing in an environment with strong winds such as the beach. More importantly, it can quickly play a sand-fixing role after the water level drops to below the surface of the sand body; during use, when the water level is high, the sand-fixing board floats on the water surface, and the sand-fixing board maintains a relatively stable posture on the water surface and will not float away; when the water level is low, the sand-fixing board is attached and inserted into the sand body in a posture adapted to the approximate contour of the sand body surface, and the gaps between adjacent sand-fixing boards are transparent areas, and the entire sand-fixing device will not shake or be damaged even in strong winds and waves, especially the gaps between adjacent sand-fixing boards can well disperse the forces (water power and wind power), effectively ensuring the sand-fixing effect and increasing its service life. In addition, the flexible blanket-type sand-fixing device of the present invention can reduce the evaporation of water in the sand body, can effectively prevent the sand-fixing plate from being damaged and deformed during use, and has the advantages of being environmentally friendly and pollution-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the flexible blanket-type sand fixation device in Example 1; Figure 2 is a schematic diagram of the first sand-fixing plate in Example 1; Figure 3 is a schematic diagram of the second sand-fixing plate in Example 1; Figure 4 This is a schematic diagram of the third sand-fixing plate in Example 1. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0018] Combination Figures 1 to 4 As shown, a flexible blanket-type sand-fixing device includes a sand-fixing plate 4, which includes a first sand-fixing plate 11, a second sand-fixing plate 12 and a third sand-fixing plate 13 that are movably connected together. The first sand-fixing plate 11 is connected to the anchor pile 2, and there is a gap between adjacent sand-fixing plates 4. All sand-fixing plates 4 together form a flexible plate structure that can be flexibly bent, and the lower surface of the flexible plate structure can be attached to the surface of the sand body in the drawdown zone. When the water submerges the sand body, the sand-fixing plate 4 floats on the water surface; when the water surface is lower than the surface of the sand body, the sand-fixing plate 4 is attached to the surface of the sand body.

[0019] In this embodiment, a cone 1 is provided on the lower surface of the second sand-fixing plate 12 and the third sand-fixing plate 13. When the water level is lower than the surface of the sand body, the cone 1 can be inserted into the sand body under the action of gravity. The cone 1 is made of metal material, and the sand-fixing plate 4 is a hollow structure made of PE material. Among them, the first sand-fixing plate 11 is a flat plate structure (such as Figure 2 As shown in FIG. 1 , a single cone 1 is provided in the middle of the lower surface of the second sand-fixing plate 12 (as shown in FIG. Figure 3 As shown in FIG. 1 , four cones 1 are evenly arranged on the lower surface of the third sand-fixing plate 13 (as shown in FIG. Figure 4 ). Adjacent sand-fixing plates 4 are connected by elliptical rings, and the first sand-fixing plate 11 is connected to the anchor pile 2 by a chain. The gap between adjacent sand-fixing plates 4 is 12 mm, and the height of the cone 1 is 10 cm.

[0020] In this embodiment, the first sand fixation board 11 is arranged in the first row close to the anchor piles 2, the third sand fixation board 13 is arranged in the last row away from the anchor piles 2, and the second sand fixation board 12 is arranged between the first sand fixation board 11 and the third sand fixation board 13. The anchor piles 2 are arranged on the bank slope of the drawdown zone so that the flexible plate structure is an overall concave arc structure during the sand fixation process.

[0021] After a certain reservoir is built, there is a drawdown zone between its highest water level and the dead water level. After the reservoir is filled with water, a large area of ​​the beach is exposed to the water surface in the low water level season, and the sand dunes and beaches in some areas are relatively large. The water is submerged in the drawdown zone for more than one week, and there is a serious problem of sand movement. At the same time, the evaporation of the water surface is large, and effective measures to fix sand and reduce evaporation are needed. Specifically, the flexible blanket-type sand fixation device in this embodiment is adopted, and the implementation process is as follows.

[0022] Prepare PE material sand-fixing blocks, and produce the above-mentioned three types of sand-fixing blocks according to design requirements: the first type is a hollow plate with flat top and bottom (i.e., the first sand-fixing block 11), which is used to connect anchor piles 2 on the shore to ensure that it can be evenly distributed along the reservoir bank; the second type is the middle blanket block (i.e., the second sand-fixing block 12), with a cone-shaped protrusion of about 10 cm in the middle of the plate on the side contacting the water surface. A sufficient number of them are produced to cover most of the middle area of ​​the drawdown zone. During the production process, the size of the protruding part (i.e., the cone 1) is accurately controlled so that the gravity of the second sand-fixing block 12 is less than the buoyancy of the water; the third type is the edge blanket block (i.e., the third sand-fixing block 13), and four cones 1 are set on the side of each blanket block at the edge that contacts the water surface. The production quantity is also determined according to the edge length of the drawdown zone to ensure that the edge can be completely covered.

[0023] Concrete anchor piles: The size, length and strength of concrete anchor piles are determined according to the geological conditions of the reservoir bank and engineering mechanics calculations. The anchor piles are prefabricated with high-strength concrete to ensure that they can be firmly fixed on the reservoir bank and withstand the tension generated by the sand-fixing board under various working conditions. According to the topography and water flow conditions of the drawdown zone, the installation position of the anchor piles is determined at a certain safe distance above the highest water level along the reservoir bank. The spacing of the installation positions is calculated and determined based on the design tension of the sand-fixing board and the bearing capacity of the anchor piles. Generally, an anchor pile is set every 3-5 meters.

[0024] Use a pile driver to drive concrete anchor piles vertically into the reservoir bank to ensure that the depth of the anchor piles meets the design requirements. During the piling process, the verticality of the piles must be strictly controlled to avoid tilting, which will affect the fixing effect of the subsequent sand fixation board.

[0025] Assembly and laying of sand-fixing boards: The sand-fixing boards are assembled in the flat area of ​​the shore. First, the first sand-fixing block 11 is connected to the concrete anchor pile 2 through a chain. After ensuring that the connection is firm, the second type of middle blanket block (the second sand-fixing board 12) and the third type of edge blanket block (the third sand-fixing block 13) are connected in sequence using an elliptical ring (elliptical locking ring) to form a complete flexible blanket-type sand-fixing device. During the assembly and connection process, attention should be paid to ensuring that the gaps between adjacent sand-fixing blocks are uniform to form a good transparent structure. After the assembly is completed, adjust the posture of the sand-fixing board so that it is unfolded and can be put into use.

[0026] During use, when the water level of the reservoir drops, the sand-fixing board will gradually cover the beach as the water level drops. The sand-fixing board will be attached and inserted into the sand body in a posture that adapts to the general contour of the sand surface, achieving the function of fixing sand and reducing water surface evaporation; during the process of rising water level, the sand-fixing board will gradually float up under the action of buoyancy and return to the state of floating on the water surface. Regularly check the sand-fixing board and anchor piles to check whether there are any damage to the sand-fixing board, loose connections, displacement of anchor piles, etc. If the sand-fixing board is found to be damaged, it should be repaired or replaced in time with the same PE material. Example 2

[0027] A flexible blanket-type sand-fixing device, referring to Example 1, differs from Example 1 in that: a third sand-fixing plate 13 is arranged between every two second sand-fixing plates 12 in the same row, and the second sand-fixing plates 12 and the third sand-fixing plates 13 in the same column are both curved structures (the second sand-fixing plates 12 and the third sand-fixing plates 13 in adjacent rows are staggered with each other); the sand-fixing plates 4 and the cone 1 are both hollow structures made of PE material, and the inner cavity of the cone 1 is filled with counterweight material (such as steel sand).

[0028] The flexible blanket-type sand-fixing device in the embodiment can not only effectively and harmlessly fix sand during flooding periods, but also has the advantage of a long sand-fixing period. Theoretically, the sand-fixing period is as long as several decades (the effective sand-fixing time in the test process has exceeded one year so far, and there has been no failure of sand-fixing; while the traditional sandbag stacking and sand-fixing method with better effects usually fails to fix sand due to damage and displacement of the sandbags after half a year of use). It can also adaptively adjust the sand-fixing according to the changes in the water level and water volume in the drawdown zone, which can not only adapt to the changes in the water level, but also ensure the stability of the sand-fixing blocks attached to the sand body, which is conducive to long-term stability in windy environments such as beaches. The sand-fixing board can effectively play the role of sand fixation, and more importantly, it can quickly play the role of sand fixation after the water level drops below the surface of the sand body; during use, when the water level is high, the sand-fixing board floats on the water surface, and the sand-fixing board maintains a relatively stable posture on the water surface and will not float away; when the water level is low, the sand-fixing board is attached and inserted into the sand body in a posture that adapts to the general outline of the sand body surface, and the gaps between adjacent sand-fixing boards are transparent areas. The entire sand-fixing device will not shake or be damaged even in strong winds and waves, especially the gaps between adjacent sand-fixing boards can well disperse the forces (water and wind), effectively ensuring the sand-fixing effect and increasing its service life. In addition, the flexible blanket-type sand-fixing device using the embodiment can reduce the evaporation of water in the sand body, can effectively prevent the sand-fixing board from being damaged and deformed during use, and has the advantages of being environmentally friendly and pollution-free.

[0029] In other embodiments, the gap between adjacent sand-fixing plates can be selected within the range of 10-15 mm, and the height of the cone can be selected within the range of 8-12 cm.

Claims

1. A flexible blanket-type sand-fixing device, comprising a sand-fixing plate (4), characterized in that: The sand-fixing plates (4) include a plurality of first sand-fixing plates (11), a second sand-fixing plate (12), and a third sand-fixing plate (13) that are movably connected together. The first sand-fixing plate (11) is connected to the anchor pile (2). There is a gap between adjacent sand-fixing plates (4). All the sand-fixing plates (4) together form a flexible plate structure that can be flexibly bent. The lower surface of the flexible plate structure can be attached to the surface of the sand body in the drawdown zone.

2. The flexible blanket-type sand fixation device according to claim 1 is characterized in that: When the water submerges the sand body, the sand fixing plate (4) floats on the water surface; when the water surface is lower than the surface of the sand body, the sand fixing plate (4) adheres to the surface of the sand body.

3. The flexible blanket-type sand fixation device according to claim 2 is characterized in that: Cones (1) are provided on the lower surfaces of the second sand-fixing plate (12) and the third sand-fixing plate (13); when the water surface is lower than the surface of the sand body, the cones (1) can be inserted into the sand body under the action of gravity.

4. The flexible blanket-type sand-fixing device according to claim 3 is characterized in that: The cone (1) is made of metal material, and the sand-fixing plate (4) is a hollow structure made of PE material; or, the sand-fixing plate (4) and the cone (1) are both hollow structures made of PE material, and the inner cavity of the cone (1) is filled with a weight material.

5. The flexible blanket-type sand fixation device according to any one of claims 1 to 4, characterized in that: A single cone (1) is provided in the middle of the lower surface of the second sand-fixing plate (12), and a plurality of cones (1) are evenly arranged on the lower surface of the third sand-fixing plate (13).

6. The flexible blanket-type sand-fixing device according to claim 5 is characterized in that: Adjacent sand-fixing plates (4) are connected by elliptical rings or ropes, and the first sand-fixing plate (11) is connected to the anchor pile (2) by a chain or rope.

7. The flexible blanket-type sand fixation device according to claim 6 is characterized in that: The gap between adjacent sand-fixing plates (4) is 10-15 mm, and the height of the cone (1) is 8-12 cm.

8. The flexible blanket-type sand-fixing device according to claim 7 is characterized in that: A third sand-fixing plate (13) is arranged between every two second sand-fixing plates (12) in the same row; and the second sand-fixing plates (12) and the third sand-fixing plates (13) in the same column both present a curved structure.

9. The flexible blanket-type sand-fixing device according to claim 8, characterized in that: The first sand-fixing plates (11) are arranged in the first row close to the anchor piles (2), the third sand-fixing plates (13) are arranged in the last row away from the anchor piles (2), and the second sand-fixing plates (12) are arranged entirely between the first sand-fixing plates (11) and the third sand-fixing plates (13).

10. The flexible blanket-type sand-fixing device according to claim 9, characterized in that: The anchor piles (2) are arranged on the bank slope of the drawdown zone, so that the flexible plate structure is in an overall concave arc structure during the sand fixation process.

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