Downward suspension type sand blocking barrier
By designing a lower suspension sand barrier, using eddy current sand barrier and assembled structure, the problem of sand barrier being buried is solved, and long-term stable sand barrier and environmental protection and conservation effects are achieved.
Patent Information
- Application Number
- CN202423003837.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing sand barriers are easily buried by wind and sand, resulting in loss of sand barriers and need to be replaced frequently, resulting in waste of resources and expansion of investment.
A lower suspension sand barrier is designed, including two columns and a sand barrier mesh plate. The porosity of the mesh plate is 30%-45%, and the height of the suspended belt is four times the height of the mesh plate. Lost legs are installed under the column to form eddy currents to block sand to avoid excessive sand accumulation. The assembly structure is used to reduce the use of concrete.
It has achieved long-term stable sand barriers, reduced project investment, avoided burial of sand barriers, improved facility safety, reduced environmental pollution, and had high promotion value.
Smart Images
Figure CN223151071U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a suspension sand barrier, belonging to a sand prevention and blocking device on both sides of a traffic line. Background Art
[0002] The construction and operation of railways or highways in sandy areas are inseparable from sand control. Sand and wind disasters are the biggest factors affecting transportation. Sand control scholars have designed and adopted various sand blocking methods. However, over time, these sand barrier projects will eventually be buried by sand and wind and lose their functions. Once the sand barriers fail, the sand fixation measures will soon be buried, and new sand blocking and sand fixation measures have to be re-established. The investment will further expand year by year, and sand control seems to be a bottomless pit without end.
[0003] Therefore, solving the problem of the sand blocking project will play a key role in the entire sand prevention project. At present, there is sand accumulation in front of and behind the sand barrier. Generally, there is more sand accumulation behind the barrier. When the sand in front of and behind the sand barrier is full, the sand barrier loses its sand blocking function. Therefore, all existing sand barriers have different service lives and cannot achieve permanent sand blocking. Summary of the Invention
[0004] The purpose of the utility model is to provide a suspension sand barrier, which can avoid the sand barrier being buried and losing its efficacy, and can achieve the purpose of long-term and stable sand blocking.
[0005] The technical scheme adopted by the utility model is that a suspension sand barrier includes at least two columns and a sand barrier net plate. The vertical sides on both sides of the sand barrier net plate are respectively fixedly installed on the two columns through bolts and pressing plates. Anti-toppling legs are arranged at intervals up and down and staggeredly at the lower parts of the two columns; a suspension zone is formed between the bottom surface of the sand barrier net plate and the ground between the two columns. The height of the sand barrier net plate is at least four times the height of the suspension zone; the porosity of the sand barrier net plate is between 30% and 45%, and the pores are 10-30 mm.
[0006] The utility model at least overcomes the shortcoming that the sand barrier is buried by accumulated sand. Its lower part is suspended. The wind carries sand through the lower suspension zone. An eddy current is formed on the leeward side of the upper sand barrier to intercept the sand passing through below, so that the sand stays within the range of 4 times the suspension height on the leeward side of the sand barrier, avoiding the further forward movement of the sand and wind.
[0007] When the accumulated sand behind the sand barrier reaches a certain height, and the accumulated sand height exceeds about 1 / 4-1 / 3H (H is the total height of the sand barrier), the accumulated sand will no longer increase. The accumulated sand will move forward parallel to the top of the accumulated sand and fall on the leeward side of the accumulated sand. The sand and wind will act on the sand barrier cyclically. Most of the sand passing through the sand barrier will fall on the leeward side of the accumulated sand, achieving the purpose of permanent sand blocking.
[0008] At the lower part of the column foundation of the utility model, anti-overturning angle steel is provided, which can be steel materials such as round steel, flat steel, square steel, channel steel, I-beam, etc., or other high-strength geotechnical materials can also be used. The anti-overturning angle steel has a square hole reserved in the column, and after the angle steel is inserted, it is sealed with M10 mortar. The anti-overturning angle steel should be set in a cross shape and can be set at different heights. The thickness and bending strength of the set angle steel need to be calculated and determined. Due to different forces under different wind speeds, the maximum wind speed should be used for calculation in different regions to prevent the column from overturning and causing the sand barrier to fail.
[0009] The porosity of the sand barrier is generally between 30% and 45%. When the porosity is greater than 45%, the sand accumulation behind the barrier cannot be higher than the sand barrier, and the formation of eddy current has a relatively small impact. When the porosity is less than 30%, the sand accumulation slope behind the barrier is relatively steep, the formation of eddy current has a greater impact, and it is easy to accumulate near the sand barrier.
[0010] The sand barrier is made of bamboo weaving. The four sides of the bamboo weaving sand barrier should be edge-locked to prevent the edge of the sand barrier from being blown away by the wind. Each sand barrier should be woven according to the column spacing and the designed height. The bamboo weaving sand barrier can also be replaced by HDPE mesh, punched mesh plate or other mesh plate materials to form a material with sand blocking ability and certain anti-wind and sand strength.
[0011] The lower part of the sand blocking barrier must be suspended at a certain height, and the height is between 0.2 m and 0.5 m, generally between 1 / 6 and 1 / 4 of the sand barrier height H. When the suspension exceeds the above range, the upper sand barrier cannot form an eddy current, so it cannot play a role in blocking sand.
[0012] The sand barrier is a prefabricated sand barrier, and no concrete is required on site, reducing environmental pollution caused by harmful gases generated by concrete. The anti-overturning support saves project investment due to the reduction of concrete.
[0013] In summary, the utility model has the characteristics of not being buried by sand and permanently blocking sand, improving the safety of internal facilities. At the same time, it has the advantages of being prefabricated, pollution-free and environmentally friendly, and saves project investment. It overcomes the disadvantages of all previous sand barriers being buried and easily failing, and has very high popularization value, bringing a brand-new solution to the sand control industry. Description of the Drawings
[0014] Figure 1 is a three-dimensional structure schematic diagram of the utility model;
[0015] Figure 2 is a sand flow principle diagram of the sand blocking barrier provided by the utility model. Detailed Embodiment
[0016] A suspended sand blocking barrier, such as Figure 1 、 2As shown in the figure, it includes at least two columns 1 and a sand barrier net plate 4. The two vertical sides of the sand barrier net plate 4 are respectively fixedly installed on the two columns 1 through bolts 3 and pressing plates 2. Anti-toppling legs 7 are arranged at intervals and staggered up and down at the lower parts of the two columns 1; A suspended belt 5 is formed between the bottom surface of the sand barrier net plate and the ground 6 between the two columns. The height of the sand barrier net plate 4 is at least four times and at most six times the height of the suspended belt 5; The porosity of the sand barrier net plate 4 is between 30% and 45%, and the pores are 10-30 mm. Example
[0017] This example is illustrated by taking a bamboo-woven sand barrier net plate type sand blocking barrier as an example:
[0018] 1. Precast concrete columns according to the design, and reserve bolt holes for installation on the columns, and reserve holes for installing anti-toppling brackets at the lower part of the columns 1.
[0019] 2. Select bamboo strips with a width of 2-10 mm, and weave bamboo mats in the warp and weft directions. The porosity is controlled between 30% and 45%, and the pores are 10-30 mm. The woven bamboo mats are locked with bamboo strips or iron wires.
[0020] 3. Manufacture the anti-toppling legs 7 according to the design specifications. The legs 7 are made of angle steel, and the angle steel is generally 98 cm in length, 5 cm in side length, and 4-5 mm in thickness.
[0021] 4. Manufacture the pressing plates 2 as required. The pressing plates 2 can be made of steel, wood or other geotechnical materials. The width of each pressing plate 2 is not more than 10 cm, the length is not less than 20 cm, and the opening in the middle is slightly larger than the diameter of the stud for the stud to pass through.
[0022] 5. Excavate the foundation pit on site. The bottom pit is the same as the column. After putting the column into the foundation pit, fill it with soil and tamp it. When reaching the first layer of anti-toppling angle steel, insert the anti-toppling angle steel. Fill the holes on the column with mortar and tamp it firmly. After installation, continue to fill the soil and compact it to the second layer of angle steel. Similarly, after installation, fill the holes on the column with mortar and tamp it firmly. Continue to fill the soil and compact it to the ground surface, and the column installation is completed.
[0023] 6. Insert the fixing bolts on the column, then install the above-mentioned bamboo mat. The holes of the bamboo mat can be squeezed open to expose the bolts. Finally, put on the pressing plate and install the nuts. Repeat the above process, and one sand blocking unit is completed.
[0024] 7. Another bamboo mat is installed on the column in the same way, and finally a certain-scale sand blocking project is formed.
Claims
1. A suspended sand barrier, comprising at least two columns and a sand barrier mesh panel, characterized in that: The two vertical sides of the described sand barrier net plate are respectively fixedly installed on the two columns through bolts and pressing plates. Anti-overturning legs are arranged at intervals up and down and staggeredly at the lower parts of the two columns. A suspended belt is formed between the bottom surface of the sand barrier net plate and the ground between the two columns. The height of the sand barrier net plate is at least four times the height of the suspended belt. The porosity of the sand barrier net plate is between 30% and 45%, and the pores are 10-30 mm.
2. The hanging sand barrier according to claim 1, wherein: The described anti-overturning legs are composed of round steel, flat steel, square steel, channel steel, angle steel or I-beam.
3. The under-hung sand barrier according to claim 2, characterized in that: The length of the described angle steel is 98 cm, the side length is 5 cm, and the thickness is 4-5 mm.
4. The hanging sand barrier according to claim 1, characterized in that: The height of the described suspended belt is between 0.2 and 0.5 m.
5. The under-suspension sand barrier according to claim 1, characterized in that: The width of each of the described pressing plates is not greater than 10 cm, and the length is at least 20 cm.
6. The hanging sand barrier according to claim 1, characterized in that: The described sand barrier net plate is composed of a bamboo woven sand barrier net plate, an HDPE net plate or a punched net plate.
7. The under-hanging sand barrier according to claim 6, characterized in that: For the described bamboo woven sand barrier net plate, the width of the bamboo strips is 2-10 mm.
8. The hanging sand barrier according to claim 1 is characterized in that: The height of the sand barrier net plate is at most six times the height of the suspended belt.