A wind and sand protection system suitable for strong sand transport environment and its construction method

Abstract

The present invention discloses a wind and sand protection system suitable for a strong sand transport environment and a construction method thereof, wherein the wind and sand protection system suitable for a strong sand transport environment comprises a first protection zone distributed in the upwind direction of the protected facility, wherein an artificial high sand blocking embankment, an n-shaped suspended storage-type sand fixing barrier and an integrated retractable cell sand fixing barrier are sequentially arranged along the outer side to the inner side of the protected facility in the first protection zone, wherein the artificial high sand blocking embankment, the n-shaped suspended storage-type sand fixing barrier and the integrated retractable cell sand fixing barrier are respectively distributed in a plurality of sand fixing belts, and blank belts are distributed between adjacent sand fixing belts, wherein the width of the sand fixing belt and the blank belt is 10-40m. The wind and sand protection system suitable for a strong sand transport environment provided by the present invention can effectively block most of the sand sources in a strong sand transport environment, and its sand accumulation efficiency and engineering durability far exceed the traditional protection system formed by multiple sand blocking barriers and nylon net sand fixing barriers.

Description

Technical Field

[0001] The invention belongs to the technical field of wind and sand control, and specifically relates to a wind and sand protection system suitable for a strong sand transport environment and a construction method thereof. Background Art

[0002] At present, combined blocking and consolidation measures are generally adopted in wind and sand protection projects to prevent the movement of quicksand and fix the local sand, reducing the harm caused by sand accumulation in the roadbed area. Sand blocking measures mainly include high vertical sand barriers, combined blocking and consolidation grid structures, suspended bag net sand barriers, etc., which play a role in suppressing wind force and blocking quicksand; sand consolidation measures are mainly grid structures of various specifications, which play the purpose of fixing the remote wind and sand flow and preventing local sand.

[0003] The main materials used in these measures include: HDPE board, HDPE net, plant fiber net, nylon net, perforated steel plate, wire mesh, various types of straw, cement board, stone, salt soil block, sandbag, etc. Its structure can be roughly divided into flat mesh shape, perforated plate shape, plate shape, block shape, cylindrical shape, as well as fixed or swinging hanging plate type, curtain type, blinds type, etc. And all of them are through the airflow through the mesh, pores, and plate gaps of different materials to generate turbulence to reduce wind force and block quicksand. Although they all have wind blocking and sand settling effects, there are still many defects in actual applications.

[0004] For example, in actual applications of wind and sand protection projects, especially in mobile sand dune areas with serious wind and sand hazards, although high vertical sand barriers can block some of the quicksand and form sand accumulation belts in front and behind the sand barriers, their height is only 1-2m, which cannot stop the advancement of all the quicksand. Most of the wind and sand will blow over the sand barriers and blow towards the railway. In addition, the sand-fixing barriers inside the protection area can only fix the quicksand, causing the thickness of the accumulated sand to increase year by year. When a stable concave surface is formed in the sand-fixing grid, the sand-fixing effect disappears, and it only serves as a sand-passing road surface. The thickness of the accumulated sand is only 20-30cm, the amount of accumulated sand is small, and the protection life is short. At this time, the quicksand will drive straight in, directly threatening the safe operation of the railway.

[0005] In addition, the sand barrier measures of plane mesh (thickness 0.3-0.5mm) or punched thin plate (thickness 2-5mm) are thin-layer plane structures, and the thick plate (thickness 2-5cm) sand barrier has horizontal or inclined gaps, and the plate itself is an airtight plane structure. The turbulence effect of airflow passing through these sand barrier measures is small, so the wind blocking and wind elimination effects are not strong, and sand particles can pass through easily; an accelerated lifting area will be formed near the top of the sand barrier, which promotes the phenomenon of a large number of sand particles passing over the sand barrier. Summary of the invention

[0006] The main purpose of the present invention is to provide a wind and sand protection system suitable for a strong sand transport environment and a construction method thereof, so as to overcome the deficiencies existing in the prior art.

[0007] To achieve the aforementioned object of the invention, the technical solution adopted by the embodiment of the present invention includes:

[0008] An embodiment of the present invention provides a wind and sand protection system suitable for a strong sand transport environment, comprising a first protection zone distributed on the upwind side of the protected facility, wherein in the first protection zone, artificial high sand-blocking embankments, N-shaped suspended storage-type sand-fixing barriers and integrated retractable cell sand-fixing barriers are arranged in sequence from the outside to the inside of the protected facility, the artificial high sand-blocking embankments, N-shaped suspended storage-type sand-fixing barriers and integrated retractable cell sand-fixing barriers are respectively distributed in multiple sand-fixing belts, blank belts are distributed between adjacent sand-fixing belts, and the width of the sand-fixing belts and the blank belts is 10-40m.

[0009] Furthermore, desert shrubs are planted in the first protection zone, and the desert shrubs include any one or more combinations of Haloxylon ammodendron, Nitraria tangutorum, Caragana microsporum, Elaeagnus cyrtonema, Calligonum mongolica, and Artemisia ordosica.

[0010] Furthermore, the artificial tall sand-blocking dam comprises a sand-blocking dam body, and both the windward side and the leeward side of the sand-blocking dam body are provided with integrated retractable cell sand-fixing barriers, and the ridge line position of the sand-blocking dam body is also provided with a wire-loop-wrapped three-dimensional structure sand-blocking barrier.

[0011] Furthermore, the integrated retractable cell sand-fixing barrier comprises an integrated retractable structure formed by connecting a plurality of elastic sheets; when the integrated retractable structure is stretched and unfolded, it presents a three-dimensional mesh cell structure; when the integrated retractable structure is folded, it presents a multi-sheet stacked structure.

[0012] Furthermore, the wire loop-wrapped three-dimensional structure sand barrier includes a wire loop-wrapped three-dimensional net and a plurality of extendable columns connected to the wire loop-wrapped three-dimensional net, wherein the lower portion of the extendable columns is inserted into the ground, and the wire loop-wrapped three-dimensional net is laid along a vertical plane; wherein the wire loop-wrapped three-dimensional net is a carpet-like interwoven fabric with a plurality of intricate pores, the porosity of the carpet-like interwoven fabric is 15-35%, and the carpet-like interwoven fabric is formed by winding and interweaving wire loop-shaped resin filaments, and the wire diameter of the wire loop-shaped resin filaments is 0.5-1.5 mm.

[0013] Furthermore, the n-shaped suspended storage-type sand-fixing barrier includes a wire loop-wrapped three-dimensional net and a plurality of support columns connected to the wire loop-wrapped three-dimensional net, wherein the wire loop-wrapped three-dimensional net is laid in a horizontal direction and the edges on both sides droop naturally, thereby forming a structure with an n-shaped lateral cross-section; the wire loop-wrapped three-dimensional net is a carpet-like interwoven fabric with a plurality of intricate pores, the pores of the carpet-like interwoven fabric are 15-35%, and the carpet-like interwoven fabric is formed by winding and interweaving wire loop-shaped resin filaments, and the wire diameter of the wire loop-shaped resin filaments is 0.5-1.5 mm.

[0014] The embodiment of the present invention also provides a method for constructing a wind and sand protection system suitable for a strong sand transport environment, comprising:

[0015] Constructing the artificial high sand-blocking embankment;

[0016] The n-shaped suspended storage-type sand-fixing barrier is fixed horizontally on the ground of the protection area by using support columns;

[0017] The integrated retractable cell sand-fixing barrier is fixed horizontally on the ground of the protection area using columns.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The wind and sand protection system of the present invention is suitable for strong sand transport environments. It is a comprehensive wind and sand protection system that can completely block sand sources, has extremely high sand fixation capacity, and can sustainably fix sand. It overcomes the shortcomings of the prior art, such as the inability of high vertical sand barriers to block and fix all wind and sand flows, the low sand fixation capacity of sand fixation barriers, the short protection life, the complex components, and the cumbersome construction process. It is a comprehensive sand control measure suitable for areas with particularly rich sand sources and strong sand transport environments.

[0020] (2) The present invention is suitable for the wind and sand protection system in a strong sand transport environment. At the far end of the protection area, the artificially built high sand barrier can intercept and fix most of the sand sources. As the sand barrier gradually increases, the wind blocking and sand fixation efficiency will continue to increase; the N-shaped suspended storage sand fixation barrier can fix the quicksand for a long time, continuously and in large quantities; the integrated retractable cell sand fixation barrier also has the advantages of efficient construction, low cost and sustainable use; combined with plant sand fixation measures, the sustainability of the protection system is improved.

[0021] (3) The artificial high sand barrier of the present invention is formed by gradually raising the sand barrier, and the sand fixation grid measures are taken to stabilize the surface quicksand, thereby promoting the continuous growth of the sand barrier height. When the sand barrier height reaches more than 8m, a stable sand barrier structure with an extremely slow moving speed will be formed. It has a high sand accumulation efficiency and a huge amount of sand accumulation, and can effectively block and fix most of the sand sources in a strong sand transport environment. The engineering durability far exceeds the blocking effect of multiple sand barriers.

[0022] (4) The artificial high sand barrier of the present invention, wherein, under the joint action of the artificial high sand barrier, the integrated retractable cell sand barrier, the wire loop-wrapped three-dimensional structure sand barrier and the vegetation, the wind and sand flow from the upwind direction is almost completely blocked and settles to the surface of the high sand barrier. On the one hand, the supply of sand sources is greatly reduced. On the other hand, with the artificial lifting of the sand barrier and the growth of plants, the sand barrier will continue to increase, and the blocking effect of the sand barrier on the flowing sand will also continue to increase.

[0023] (5) The artificial high sand barrier of the present invention reduces the wind speed on the leeward side, promotes plant growth and sand deposition, and the growth of plants keeps the height of the sand barrier growing continuously. In this process, the interaction between the sand barrier and the vegetation makes the sand barrier system more stable. At the same time, the pressurized water inside the artificial high sand barrier and the accumulated water at the foot of the slope increase the moisture content of the sand layer near the foot of the slope. The clay layer at the lower abdomen prevents water from seeping in, thus promoting the growth of vegetation. In addition, due to the blocking effect of the artificial high sand barrier on seed propagation, the seeds blown in from the upwind direction are fixed between the sand barrier and the railway, enriching the soil seed bank and plant diversity, especially promoting the growth of pioneer plants such as millet and reed near the sand barrier. Combined with the top sand barrier and slope sand fixation measures, the entire sand barrier becomes a stable fixed sand dune.

[0024] (6) The integrated retractable cell sand-fixing barrier used in the present invention is retractable and can be folded up during transportation. It can be stretched into a net shape when in use, forming a structure with strong lateral restriction and high rigidity. It is a structurally integrated, retractable sand-fixing barrier with a small transportation volume and high transportation efficiency.

[0025] (7) The integrated retractable cell sand-fixing barrier used in the present invention has good construction performance and simple components. The use of a retractable structure can greatly reduce the construction labor intensity, increase the construction speed, and greatly reduce the project cost. In addition, the material used is light, resistant to light and oxygen aging, wear, acid and alkali, has stable chemical properties, and has excellent sand-fixing efficiency. It is suitable for the needs of controlling wind and sand disasters in deserts and Gobi with strong radiation and strong sand transport environments.

[0026] (8) The integrated retractable cell sand-fixing barrier used in the present invention can form cell structures of different heights (30-50cm) and side lengths (1-2.5m) by changing geometric dimensions such as the height (30-50cm) and welding distance (1-2.5m) of the cell sand-fixing barrier, which is suitable for the management needs in environments with different wind and sand intensities. When encountering undulating terrain and irregular edges of plots, due to its good lateral ductility, it can ensure that the bottom of the sand-fixing barrier fits tightly with the surface to prevent wind erosion caused by the bottom lifting. It has excellent corrosion resistance and is completely suitable for salinized sand-damaged areas. The high-strength thermoplastic structure has a strong lateral restriction and high rigidity to prevent deformation.

[0027] (9) The wire-loop-wrapped three-dimensional sand barrier used in the present invention has a three-dimensional structure that is densely porous and thickened (1-3 cm thick) and is different from punched, meshed or plate-gap sand barriers. When the wind and sand flow passes through any part of the sand barrier, dense irregular turbulence will be generated inside the wire loop, which greatly consumes the speed and energy of the airflow. Therefore, sand particles are more likely to settle and be fixed in front and behind the sand barrier, and the wind blocking and sand accumulation efficiency are higher.

[0028] (10) The wire loop-wrapped three-dimensional sand barrier used in the present invention has a main body made of resin, which is environmentally friendly, green and pollution-free. In addition, since it is a wire loop-wrapped three-dimensional structure, there is no need to lock the edges, and it can be cut at will without the edges loosening or tearing, thereby ensuring structural strength and protective life while being easy to use. In addition, since the overall structure is a thick sheet, it can be used interchangeably with the supporting columns and installation auxiliary materials of the currently commonly used nylon mesh fences. There is no need to design and manufacture special columns separately, and it can be directly fixed on existing columns. Therefore, the wire loop-wrapped three-dimensional net has strong versatility and expansibility.

[0029] (11) The n-shaped suspended storage-type sand-fixing barrier used in the present invention is a wire-loop-wrapped three-dimensional net fixed on a column by two circular rubber sheets above and below. According to the elevation of the sand surface under the wire-loop-wrapped three-dimensional net, the height of the fixed rubber sheet is raised, or the original column is raised, or a new column is connected, so that the sand barrier and the sand surface are always kept at a distance of 20-50 cm. Since it does not contact the sand surface, it has the function of being easily lifted compared to the traditional square-shaped sand-fixing barrier; the lifting range, that is, the corresponding sand accumulation thickness can reach several meters to tens of meters, which is much larger than the 10-30 cm sand accumulation thickness of the traditional square-shaped sand-fixing barrier. In addition, the layout width is 10-40m. Therefore, the amount of sand accumulation far exceeds that of the traditional square-shaped sand-fixing barrier, and the service life is long.

[0030] (12) The n-shaped suspended storage-type sand-fixing barrier used in the present invention has an n-shaped suspended flat structure with the edge sand barrier in a naturally drooping shape, and the lower edge has a gap of 10-20 cm from the ground. First, this structural design allows the wind and sand flow to enter the huge n-shaped inverted storage space smoothly without obstruction, and will not accumulate at the edge; secondly, the wind force can be reduced by the swaying of the drooping edge; in addition, the sand barrier isolates and reduces the energy of the upper airflow, and the energy of the sand-carrying airflow at the bottom is also consumed by the friction between the sand barrier and the ground. Therefore, compared with the general square sand-fixing barrier with a completely open upper part, its sand deposition effect is significantly increased.

[0031] (13) The N-shaped suspended storage-type sand-fixing barrier used in the present invention is not easily buried. Even if it is buried, the sand can be lifted and shaken to make the sand flow out from the gaps in the sand barrier and re-suspended on the surface. Therefore, it can be continuously lifted for continuous use, or moved for recycling. In addition, the N-shaped three-dimensional net structure has the functions of shading, windproofing and moisturizing, which can promote the growth of vegetation at the bottom of the N-shaped suspended storage-type sand-fixing barrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic structural diagram of a wind and sand protection system suitable for a strong sand transport environment in one embodiment of the present application.

[0034] Figure 2 yes Figure 1 Schematic diagram of the structure of a medium-sized artificial high sand-blocking embankment.

[0035] Figure 3 yes Figure 2 Schematic diagram of the specific structure of the three-dimensional sand barrier with a middle wire loop winding structure.

[0036] Figure 4 yes Figure 1 Diagram of the expanded state of the integrated retractable cell sand barrier.

[0037] Figure 5 yes Figure 4 Schematic diagram of the specific structure of the middle cell.

[0038] Figure 6 yes Figure 1 Diagram of the telescopic state of the integrated telescopic cell sand barrier.

[0039] Figure 7 yes Figure 1 Schematic diagram of the specific structure of the medium-n-shaped suspended storage-type sand-fixing barrier.

[0040] Figure 8 yes Figure 7 Schematic diagram of the connection between the medium circular rubber sheet and the support column.

[0041] Explanation of the reference numerals in the accompanying drawings: 1. integrated retractable cell sand-fixing barrier, 11. cell, 12. elastic sheet, 2. cell center, 3. eyelet, 4. wire-loop-wound three-dimensional structure sand-fixing barrier, 41. wire-loop-wound three-dimensional net, 42. connectable column, 421. inner thread, 422. screw connector, 5. sand-blocking dam body, 6. ground, 7. railway roadbed, 8. n-shaped suspended storage-type sand-fixing barrier, 81. wire-loop-wound three-dimensional net, 82. support column, 83. circular rubber sheet, 9. sand-growing shrubs. DETAILED DESCRIPTION

[0042] The present invention will be more fully understood through the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it should be understood that the disclosed embodiments are only exemplary of the present invention, which can be embodied in various forms. Therefore, the specific functional details disclosed herein should not be interpreted as limiting, but only as the basis of the claims and as a representative basis for teaching those skilled in the art to adopt the present invention in different ways in virtually any appropriate detailed embodiment.

[0043] In view of the shortcomings of the existing technology, the inventor of this case, after long-term research and practice, found that for mobile sand dunes and Gobi areas with abundant sand sources and strong sand transport, the wind and sand protection project needs to completely block the sand sources from the upwind direction to prevent them from entering the protection area, and eliminate the harm of quicksand to railways and other facilities from a long-term perspective; in addition, in order to achieve the purpose of long-term governance, it is also necessary to combine long-term sand fixation and plant measures to achieve the sustainability of protection. Therefore, an artificial high sand barrier and a wind and sand protection system suitable for a strong sand transport environment are proposed. By establishing a wire loop winding vertical The structure sand barrier and the integrated retractable cell sand barrier are combined with plant measures, and the engineering measures are periodically improved to build and continuously accumulate the sand barrier. When the height of the sand barrier exceeds 8 meters, its movement speed will become extremely slow, so that most of the quicksand at the far end is intercepted and fixed on the surface of the sand bank. At the same time, n-shaped suspended storage sand barrier, integrated retractable cell sand barrier and plant sand fixation measures are set behind the sand bank to fix the residual sand that crosses the sand bank for a long time and prevent local sand from rising, forming a sand hazard control system suitable for environments with abundant sand sources and strong sand transport. The technical solution of the present invention will be explained in more detail as follows.

[0044] One aspect of an embodiment of the present invention provides a wind and sand protection system suitable for a strong sand transport environment, comprising a first protection zone distributed on the upwind side of the protected facility, wherein in the first protection zone, artificial high sand-blocking embankments, N-shaped suspended storage-type sand-fixing barriers and integrated retractable cell sand-fixing barriers are arranged in sequence from the outside to the inside of the protected facility, and the artificial high sand-blocking embankments, N-shaped suspended storage-type sand-fixing barriers and integrated retractable cell sand-fixing barriers are respectively distributed in multiple sand-fixing belts, and blank belts are distributed between adjacent sand-fixing belts, and the width of the sand-fixing belts and the blank belts is 10-40m.

[0045] In some preferred embodiments, the distance between the artificial high sand-blocking embankment and the protected facilities is 300-600m.

[0046] In some preferred embodiments, desert shrubs are also planted in the first protection zone. The desert shrubs may include any one or more combinations of Haloxylon ammodendron, Nitraria tangutorum, Caragana korshinskii, Elaeagnus cyrtonema, Calligonum mongolica, Artemisia ordosica, etc., but are not limited thereto.

[0047] In some preferred embodiments, the artificial tall sand-blocking dam comprises a sand-blocking dam body, and both the windward side and the leeward side of the sand-blocking dam body are provided with integrated retractable cell sand-fixing barriers, and the ridge line position of the sand-blocking dam body is also provided with a wire-loop-wrapped three-dimensional structure sand-blocking barrier.

[0048] In some preferred embodiments, the integrated retractable cell sand barrier comprises an integrated retractable structure formed by connecting a plurality of elastic sheets; when the integrated retractable structure is stretched and unfolded, it presents a three-dimensional mesh cell structure; when the integrated retractable structure is folded, it presents a multi-sheet stacked structure.

[0049] In some preferred embodiments, a plurality of holes with a diameter of 2-4 cm are distributed on the elastic sheet.

[0050] In some preferred embodiments, the elastic sheet comprises a high-density polyethylene and / or polypropylene sheet.

[0051] In some preferred embodiments, the elastic sheet has a height of 30-50 cm and a thickness of 2-5 mm.

[0052] In some preferred embodiments, each cell in the three-dimensional mesh cell structure has a height of 30-50 cm and a side length of 1-2.5 m.

[0053] In some preferred embodiments, the integrated retractable cell sand barrier has a height of 30-50 cm, a side length of 1-2.5 m, and a thickness of the elastic sheet of 2-5 mm.

[0054] In some preferred embodiments, each cell in the three-dimensional mesh cell structure is formed by enclosing a plurality of elastic sheets that are heat-melt welded or riveted to each other.

[0055] In some preferred embodiments, the distance between the centers of two adjacent cells in the three-dimensional mesh cell structure is 1-2.5 m.

[0056] In some preferred embodiments, the wire loop-wrapped three-dimensional structure sand barrier includes a wire loop-wrapped three-dimensional net and a plurality of extendable columns connected to the wire loop-wrapped three-dimensional net, wherein the lower portion of the extendable columns is inserted into the ground, and the wire loop-wrapped three-dimensional net is laid along a vertical plane; wherein the wire loop-wrapped three-dimensional net is a carpet-like interwoven fabric with a plurality of intricate pores, the porosity of the carpet-like interwoven fabric is 15-35%, and the carpet-like interwoven fabric is formed by winding and interweaving wire loop-shaped resin filaments, and the wire diameter of the wire loop-shaped resin filaments is 0.5-1.5 mm.

[0057] In some preferred embodiments, the bottom of the extendable column is provided with an internal thread and the top is provided with a screw connector, so as to facilitate installation of a new extendable column on the original extendable column to increase the height of the sand barrier.

[0058] In some preferred embodiments, the extendable column has a length of 2.2-2.7 m, a diameter of 2-4 cm, and a height above the ground of 1.5-2 m.

[0059] In some preferred embodiments, the extendable column comprises a galvanized steel pipe.

[0060] In some preferred embodiments, the artificial high sand barrier is set in a moving sand dune area or a Gobi area located upwind of the protected facility.

[0061] In some preferred embodiments, sand-dwelling shrubs are distributed on both the windward and leeward sides of the artificial high sand-blocking embankment. The sand-dwelling shrubs may include any one or more combinations of Haloxylon ammodendron, Nitraria tangutorum, Caragana korshinskii, Elaeagnus cyrtonema, Calligonum mongolica, Artemisia ordosica, etc., but are not limited thereto.

[0062] In some preferred embodiments, the wind and sand protection system suitable for a strong sand transport environment also includes a second protection zone distributed downwind of the protected facility, in which wire loop-wrapped three-dimensional structure sand barriers, n-shaped suspended storage-type sand fixation barriers, and integrated retractable cell sand fixation barriers are arranged in sequence from the outside to the inside of the protected facility, and are respectively distributed in multiple sand fixation belts, with blank belts distributed between adjacent sand fixation belts, and the width of the sand fixation belts and blank belts is 10-40m.

[0063] In some preferred embodiments, the n-shaped suspended storage-type sand fixation barrier includes a wire loop-wrapped three-dimensional net and a plurality of support columns connected to the wire loop-wrapped three-dimensional net, wherein the wire loop-wrapped three-dimensional net is laid in a horizontal direction, and the edges on both sides droop naturally, thereby forming a structure with an n-shaped lateral cross-section; the wire loop-wrapped three-dimensional net is a carpet-like interwoven fabric with a plurality of intricate pores, the pores of the carpet-like interwoven fabric are 15-35%, and the carpet-like interwoven fabric is formed by winding and interweaving wire loop-shaped resin filaments, and the wire diameter of the wire loop-shaped resin filaments is 0.5-1.5 mm.

[0064] In some preferred embodiments, the distance between the main body of the wire loop-wrapped three-dimensional net and the ground is 20-50 cm, and the distance between the lower edge of the hanging part and the ground is 10-20 cm.

[0065] In some preferred embodiments, two circular rubber sheets are disposed on each supporting column, and the wire-loop-wound three-dimensional net is fixed between the two circular rubber sheets.

[0066] Another aspect of the embodiments of the present invention further provides a method for constructing a wind and sand protection system suitable for a strong sand transport environment, comprising:

[0067] Constructing the artificial high sand-blocking embankment;

[0068] The n-shaped suspended storage-type sand-fixing barrier is fixed horizontally on the ground of the protection area by using support columns;

[0069] The integrated retractable cell sand-fixing barrier is fixed horizontally on the ground of the protection area using columns.

[0070] In some preferred embodiments, the method for constructing a wind and sand protection system suitable for a strong sand transport environment includes: laying out a 1.5-meter-high wire-loop-wrapped three-dimensional sand barrier in a mobile sand dune area or Gobi area 300-600 meters upwind from the protected facility to form a small sand accumulation belt, and then raising the height of the sand barrier to increase the height of the formed sand accumulation belt, and correspondingly gradually reducing the laying height of the sand barrier to 1.2m or 1m, and continuing to raise the sand barrier layer by layer after a small sand barrier is formed; when the height of the sand barrier reaches 3-4m, an integrated retractable cell sand-fixing barrier is set on the windward and leeward slopes of the sand accumulation belt, and sand-growing shrubs are simultaneously sown, broadcasted, and planted to fix the quicksand on the slope of the sand accumulation belt, and finally form an artificial high sand barrier with a height of more than 8m.

[0071] The wind and sand protection system suitable for strong sand transport environments provided by the embodiments of the present invention is a comprehensive wind and sand protection system that can completely block sand sources, has extremely high sand fixation and sustainable sand fixation. It overcomes the shortcomings of the prior art, such as the inability of high vertical sand barriers to block and fix all wind and sand flows, the low sand fixation capacity of sand fixation barriers, the short protection life, complex components, and cumbersome construction procedures. It is a comprehensive measure for sand hazard control suitable for areas with particularly rich sand sources.

[0072] The following will describe the technical solutions in the embodiments of the present invention in detail in conjunction with the drawings in the embodiments of the present invention. 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.

[0073] Example

[0074] See also Figure 1The embodiment of the present invention provides a wind and sand protection system suitable for a strong sand transport environment, comprising a first protection zone distributed in the upwind direction of a railway embankment 7, wherein in the first protection zone, there are arranged in sequence from the outer side to the inner side of the railway embankment 7, artificial high sand-blocking embankments, two n-shaped suspended warehouse-type sand-fixing barriers 8, and two integrated retractable cell sand-fixing barriers 1, which are arranged in a sand-fixing belt and a blank belt at intervals; the artificial high sand-blocking embankments, the n-shaped suspended warehouse-type sand-fixing barriers 8, and the integrated retractable cell sand-fixing barriers 1 are respectively distributed in a plurality of sand-fixing belts, and there are empty spaces between adjacent sand-fixing belts. The width of the white belt, sand-fixing belt and blank belt is 10-40m; the distance between the artificial high sand-blocking embankment and the railway roadbed 7 is 300-600m. There are also sand-dwelling shrubs 9 in the first protection zone. The plant species are mainly sand-dwelling shrubs such as Haloxylon ammodendron, Nitraria tangutorum and Caragana korshinskii, and it is best to use native tree species. Nitraria tangutorum and Caragana korshinskii have a bushy structure and are easy to form shrub sand piles, which have a good effect on promoting the accumulation of quicksand. The lifespan of Caragana korshinskii can reach 100 years, but it is necessary to plant pioneer plants such as Haloxylon ammodendron, Calligonum mongolica and Artemisia ordosica in advance to increase the diversity and stability of the community.

[0075] The wind and sand protection system suitable for a strong sand transport environment of the present embodiment also includes a second protection zone distributed downwind of the railway roadbed 7. In the second protection zone, a wire loop-wrapped three-dimensional structure sand barrier 4, an N-shaped suspended storage-type sand fixation barrier 8, and an integrated retractable cell sand fixation barrier 1 are sequentially arranged along the outer side to the inner side of the railway roadbed 7, and are respectively distributed in a plurality of sand fixation belts, and blank belts are distributed between adjacent sand fixation belts. The width of the sand fixation belts and the blank belts is 10-40m.

[0076] During implementation, Figure 2 As shown, the artificial tall sand-blocking dam includes a sand-blocking dam body 5, and an integrated retractable cell sand-fixing barrier 1 is arranged on the windward side and the leeward side of the sand-blocking dam body 5, and a wire-loop-wrapped three-dimensional structure sand-blocking barrier 4 is also arranged at the ridge line position of the sand-blocking dam body 5.

[0077] For the specific structure of the integrated retractable cell sand barrier 1, see Figure 3 , including an integrated retractable structure formed by connecting a plurality of elastic sheets 12; when the integrated retractable structure is stretched and unfolded, it presents a three-dimensional mesh cell structure; Figure 5 As shown, when the integrated telescopic structure is folded, it presents a multi-piece stacked structure; Figure 4 As shown, a plurality of holes 3 with a diameter of 2-4 cm are distributed on the elastic sheet 12. The elastic sheet 12 comprises a high-density polyethylene and / or polypropylene sheet. The height of the elastic sheet 12 is 30-50 cm and the thickness is 2-5 mm.

[0078] During the implementation process, the height of each cell 11 in the three-dimensional mesh cell structure is 30-50cm, the side length is 1-2.5m, the height of the integrated retractable cell sand barrier is 30-50cm, the thickness of the elastic sheet 12 is 2-5mm, and each cell 11 in the three-dimensional mesh cell structure is formed by enclosing a plurality of elastic sheets 12 that are hot-melt welded or riveted to each other, and the distance between the centers 2 of two adjacent cells in the three-dimensional mesh cell structure is 1-2.5m.

[0079] The specific structure of the wire loop winding three-dimensional structure sand barrier 4 is as follows: Figure 6 As shown, it includes a wire loop-wrapped three-dimensional net 41 and a plurality of extendable columns 42 connected to the wire loop-wrapped three-dimensional net 41, the lower part of the extendable columns 42 is inserted into the ground 6, and the wire loop-wrapped three-dimensional net 41 therein is laid along the vertical plane; wherein the wire loop-wrapped three-dimensional net 41 is a carpet-like interwoven fabric with a plurality of intricate pores, the carpet-like interwoven fabric is formed by winding and interweaving wire loop-shaped resin filaments, and the wire diameter of the wire loop-shaped resin filaments is 0.2-0.5mm; an inner thread 421 is provided at the bottom of the extendable column 42, and a screw connector 422 is provided at the top, so as to facilitate the installation of a new extendable column 42 on the original extendable column 42 to realize the increase of the height of the sand barrier, the length of the extendable column 42 is 2.2-2.7m, the diameter is 2-4cm, the height above the ground is 1.5-2m, and the extendable column 42 includes a galvanized steel pipe.

[0080] During specific implementation, the artificial high sand-blocking embankment is set in the mobile sand dune area or Gobi area located upwind of the protected facilities. Sand-dwelling shrubs are also distributed on the windward and leeward sides of the artificial high sand-blocking embankment. The sand-dwelling shrubs can include any one or more combinations of Haloxylon ammodendron, Nitraria tangutorum, Caragana korshinskii, Croton tiglium, Calligonum mongolica, Artemisia ordosica, etc.

[0081] During the implementation process, the specific structure of the n-shaped suspended storage sand-fixing barrier 8 is shown in Figure 7 , including a wire loop-wrapped three-dimensional net 81 and a plurality of support columns 82 connected to the wire loop-wrapped three-dimensional net 81, wherein the wire loop-wrapped three-dimensional net 81 is laid in the horizontal direction and the edges on both sides droop naturally, thereby forming a structure with an n-shaped lateral cross-section; the wire loop-wrapped three-dimensional net 81 is a carpet-like interwoven fabric with a plurality of intricate pores, the carpet-like interwoven fabric is formed by winding and interweaving wire loop-shaped resin filaments, the wire diameter of the wire loop-shaped resin filaments is 0.2-0.5mm, the main body of the wire loop-wrapped three-dimensional net 81 is 10-50cm away from the ground 6, and the lower edge of the drooping part is 10-20cm away from the ground 6, such as Figure 8 As shown, two circular rubber sheets 83 are provided on each support column 82 , and the wire loop-wound three-dimensional net 81 is fixed between the two circular rubber sheets 83 .

[0082] The method for constructing a wind and sand protection system suitable for a strong sand transport environment in this embodiment includes:

[0083] First, at the outermost periphery of the first protection zone, on the upwind side of the railway embankment 7, 300-600m away from the railway embankment, a wire-loop-wrapped three-dimensional structure sand barrier 4 with a height of 1.5m is laid to block the quicksand and form a sand accumulation belt. When the sand barrier is buried, the height of the sand barrier is increased by continuously installing new extendable columns 42 on the original columns and laying new sand barriers, so that the sand accumulation belt gradually increases to form a sand barrier. When the height of the sand barrier reaches 3m, an integrated retractable and liftable cell sand-fixing barrier 1 is laid on the windward and leeward slopes to fix the quicksand on the slope of the sand barrier, so that the sand barrier continues to increase to become an artificial high sand barrier with a height of more than 8m, blocking and fixing most of the sand sources in the upwind direction.

[0084] Secondly, two n-shaped suspended storage-type sand-fixing barriers 8 are laid behind the artificial high sand-blocking embankment to fix the quicksand that has passed over the sand-blocking embankment;

[0085] Then, an integrated retractable cell sand-fixing barrier 1 is set up at the position closest to the railway roadbed 7 to fix the residual sand and raise the sand on the spot;

[0086] All kinds of protection measures are parallel to the line and perpendicular to the main wind direction, and are arranged alternately in the form of sand-fixing belts and blank belts. Multiple belts can be set up according to the severity of sand damage. The width of each sand-fixing belt is 10-40m, and the width of the blank belt is 10-40m. The length is determined according to specific protection needs;

[0087] Finally, in the entire first protection zone and the second protection zone, aerial seeding, broadcasting and planting of sand-dwelling shrubs, and fencing and enclosure measures were simultaneously combined, combining engineering and biological measures to establish a comprehensive railway wind and sand protection system suitable for areas with good rainfall conditions and abundant sand sources and mobile sand dunes.

[0088] The various aspects, embodiments, features and examples of the present invention should be considered as illustrative in all aspects and are not intended to limit the present invention, the scope of the present invention is defined only by the claims. Other embodiments, modifications and uses will be apparent to those skilled in the art without departing from the spirit and scope of the claimed invention.

[0089] The use of headings and sections in this disclosure is not meant to limit the disclosure; each section may apply to any aspect, embodiment, or feature of the disclosure.

[0090] Throughout this disclosure, where a composition is described as having, containing, or comprising particular components, or where a process is described as having, containing, or comprising particular process steps, it is contemplated that the compositions taught by the present invention also consist essentially of or consist of the recited components, and that the processes taught by the present invention also consist essentially of or consist of the recited process steps.

[0091] Unless specifically stated otherwise, use of the terms "include," "includes," "including," "have," "has," or "having" should generally be construed as open ended and non-limiting.

[0092] It should be understood that the order of the various steps or the order in which a particular action is performed is not very important, as long as the teachings of the present invention remain operable. In addition, two or more steps or actions may be performed simultaneously.

[0093] In addition, the inventors of this case also referred to the aforementioned embodiments and conducted experiments with other raw materials, process operations, and process conditions described in this specification, and obtained relatively ideal results.

[0094] Although the present invention has been described with reference to illustrative embodiments, it will be appreciated by those skilled in the art that various other changes, omissions and / or additions may be made without departing from the spirit and scope of the present invention and that the elements of the embodiments may be replaced by substantial equivalents. In addition, many modifications may be made without departing from the scope of the present invention to adapt specific circumstances or materials to the teachings of the present invention. Therefore, it is not intended herein to limit the present invention to the disclosed specific embodiments for performing the present invention, but it is intended that the present invention will include all embodiments within the scope of the appended claims. In addition, unless specifically stated, any use of the terms first, second, etc. does not indicate any order or importance, but rather uses the terms first, second, etc. to distinguish one element from another.

Claims

1. A wind and sand protection system suitable for strong sand transport environment, characterized in that: The invention comprises a first protection zone distributed on the upwind side of the protected facility, wherein an artificial high sand-blocking dam, an N-shaped suspended storage-type sand-fixing barrier and an integrated retractable cell sand-fixing barrier are arranged in sequence from the outside to the inside of the protected facility in the first protection zone, the artificial high sand-blocking dam, the N-shaped suspended storage-type sand-fixing barrier and the integrated retractable cell sand-fixing barrier are respectively distributed in a plurality of sand-fixing belts, blank belts are distributed between adjacent sand-fixing belts, the widths of the sand-fixing belts and the blank belts are 10-40m, the artificial high sand-blocking dam comprises a sand-blocking dam body, the windward side and the leeward side of the sand-blocking dam body are both provided with an integrated retractable cell sand-fixing barrier, the sand-blocking dam A wire-loop-wrapped three-dimensional sand barrier is also arranged at the ridgeline of the sand bank body. The integrated retractable cell sand barrier includes an integrated retractable structure formed by connecting a plurality of elastic sheets; when the integrated retractable structure is stretched and unfolded, it presents a three-dimensional mesh cell structure; when the integrated retractable structure is folded, it presents a multi-sheet stacked structure; the n-shaped suspended storage-type sand barrier includes a wire-loop-wrapped three-dimensional net and a plurality of support columns connected to the wire-loop-wrapped three-dimensional net, wherein the wire-loop-wrapped three-dimensional net is laid in the horizontal direction and the edges on both sides droop naturally, thereby forming a structure with an n-shaped lateral cross-section; The wire-loop-wrapped three-dimensional sand barrier comprises a wire-loop-wrapped three-dimensional net and a plurality of extendable columns connected to the wire-loop-wrapped three-dimensional net, wherein the lower portion of the extendable columns is inserted into the ground, and the wire-loop-wrapped three-dimensional net is laid along a vertical surface; Among them, the wire loop-wrapped three-dimensional mesh is a carpet-like interwoven fabric with multiple intricate pores, the porosity of the carpet-like interwoven fabric is 15-35%, and the carpet-like interwoven fabric is formed by winding and interweaving wire loop-shaped resin filaments, and the wire diameter of the wire loop-shaped resin filaments is 0.5-1.5mm.

2. The wind and sand protection system suitable for strong sand transport environment according to claim 1 is characterized by: The distance between the artificial high sand-blocking embankment and the protected facilities is 300-600m.

3. The wind and sand protection system suitable for strong sand transport environment according to claim 1 is characterized by: Desert shrubs are also planted in the first protection zone, and the desert shrubs include any one or more combinations of Haloxylon ammodendron, Nitraria tangutorum, Caragana microsporum, Elaeagnus cyrtonema, Calligonum mongolica, and Artemisia ordosica.

4. The wind and sand protection system suitable for strong sand transport environment according to claim 1 is characterized by: The elastic sheet is provided with a plurality of holes with a diameter of 2-4 cm.

5. The wind and sand protection system suitable for strong sand transport environment according to claim 1 or 4, characterized in that: The elastic sheet comprises a high-density polyethylene and / or polypropylene sheet.

6. The wind and sand protection system suitable for strong sand transport environment according to claim 1 or 4, characterized in that: The elastic sheet has a height of 30-50 cm and a thickness of 2-5 mm.

7. The wind and sand protection system suitable for strong sand transport environment according to claim 1 is characterized by: Each cell in the three-dimensional mesh cell structure has a height of 30-50 cm and a side length of 1-2.5 m.

8. The wind and sand protection system suitable for strong sand transport environment according to claim 1 is characterized by: The integrated retractable cell sand-fixing barrier has a height of 30-50 cm, a side length of 1-2.5 m, and a thickness of 2-5 mm for the elastic sheet.

9. The wind and sand protection system suitable for strong sand transport environment according to claim 1 is characterized by: Each cell in the three-dimensional mesh cell structure is formed by enclosing a plurality of elastic sheets that are welded or riveted to each other.

10. The wind and sand protection system suitable for strong sand transport environment according to claim 1 is characterized by: The distance between the centers of two adjacent cells in the three-dimensional mesh cell structure is 1-2.5 m.

11. The wind and sand protection system suitable for strong sand transport environment according to claim 1 is characterized by: The bottom of the extendable column is provided with an inner thread, and the top is provided with a screw connector, which is convenient for installing a new extendable column on the original extendable column to increase the height of the sand barrier.

12. The wind and sand protection system suitable for strong sand transport environment according to claim 11, characterized in that: The extendable column has a length of 2.2-2.7 m, a diameter of 2-4 cm, and a height above the ground of 1.5-2 m.

13. The wind and sand protection system suitable for strong sand transport environment according to claim 11 or 12, characterized in that: The extendable column comprises a galvanized steel pipe.

14. The wind and sand protection system suitable for strong sand transport environment according to claim 11, characterized in that: The artificial high sand-blocking embankment is arranged in a mobile sand dune area or a Gobi area located upwind of the protected facility.

15. The wind and sand protection system suitable for strong sand transport environment according to claim 14, characterized in that: Artificially planted sand-dwelling shrubs are distributed on the windward side and the leeward side of the artificial high sand-blocking embankment. The sand-dwelling shrubs include any one or more combinations of Haloxylon ammodendron, Nitraria tangutorum, Caragana korshinskii, Elaeagnus cyrtonema, Calligonum mongolica, and Artemisia ordosica.

16. The wind and sand protection system suitable for strong sand transport environment according to claim 1, characterized in that: It also includes a second protection zone distributed downwind of the protected facility, in which wire loop-wrapped three-dimensional structure sand-blocking barriers, N-shaped suspended storage-type sand-fixing barriers and integrated retractable cell sand-fixing barriers are arranged in sequence from the outside to the inside of the protected facility. The wire loop-wrapped three-dimensional structure sand-blocking barriers, N-shaped suspended storage-type sand-fixing barriers and integrated retractable cell sand-fixing barriers are respectively distributed in multiple sand-fixing belts, and blank belts are distributed between adjacent sand-fixing belts. The width of the sand-fixing belts and the blank belts is 10-40m.

17. The wind and sand protection system suitable for strong sand transport environment according to claim 1 is characterized by: The distance between the main body of the wire loop-wrapped three-dimensional net and the ground is 20-50 cm, and the distance between the lower edge of the hanging part and the ground is 10-20 cm.

18. The wind and sand protection system suitable for strong sand transport environment according to claim 1 is characterized by: Two circular rubber sheets are arranged on each supporting column, and the wire loop winding type three-dimensional net is fixed between the two circular rubber sheets.

19. The method for constructing a wind and sand protection system suitable for a strong sand transport environment according to any one of claims 1 to 18, characterized in that include: Constructing the artificial high sand-blocking embankment; The n-shaped suspended storage-type sand-fixing barrier is fixed horizontally on the ground of the protection area by using support columns; The integrated retractable cell sand-fixing barrier is fixed horizontally on the ground of the protection area using columns.

20. The method for constructing a wind and sand protection system suitable for a strong sand transport environment according to claim 19, characterized in that include: In the mobile sand dune area or Gobi area 300-600 meters upwind from the protected facilities, a wire loop-wrapped three-dimensional sand barrier with a height of 1.5 meters is laid out to form a small sand accumulation belt. Then the height of the sand barrier is increased to increase the height of the formed sand accumulation belt, and the laying height of the sand barrier is gradually reduced to 1.2m or 1m accordingly. After a small sand barrier is formed, the sand barrier is continuously raised layer by layer. When the height of the sand barrier reaches 3-4m, an integrated retractable cell sand-fixing barrier is laid out on the windward and leeward slopes of the sand accumulation belt, and sand-growing shrubs are simultaneously sown, broadcasted and planted to fix the quicksand on the slope of the sand accumulation belt, and finally an artificial tall sand barrier with a height of more than 8m is formed.

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