CN100501006C - Multi-directional wind-resistant three-dimensional lattice series polymer vertical sand barrier and its manufacturing method - Google Patents

Abstract

The invention relates to a multi-directional wind resistance, three-dimensional lattice polymer vertical clothing barrier against sand, comprising graticule sheet against sand, which comprises flat polymer broadband and nylon silk, characterized in that the sheet is modeled and connected with many sheets or a whole sheet by folding, weaving or bonding, and formed vertical structure set upward in distance. Six-lattice vertical barrier against sand is formed in reciprocal chiasmata of graticule wall. The production method is expressed as follows. First, graticule sheet against sand, whose frame width and porosity satisfy the designing demand, is weaved. Then gained sheet is modeled and weaved or bonded to various lattice three-dimensional vertical barriers against sand by folding way. Finally, the product is attained. The difficult technological problem that the graticule wall of prior polymer lattice barrier against sand is not reciprocal chiasmata in technology is commendably solved. It is the perfect succedaneum of firewood barrier against sand, nylon graticule and so on.

Description

Multi-directional wind-resistant three-dimensional lattice series polymer vertical sand barrier and its manufacturing method

1. Technical field: The present invention relates to a sand barrier for wind resistance and sand fixation, in particular to a three-dimensional grid-like vertical sand-fixation sand barrier that can resist multidirectional winds.

2. Background technology: China is one of the countries most seriously affected by wind and sand in the world. According to the first national desertification monitoring conducted by the Ministry of Forestry in 1994, the Gobi desert and sandy land area in China is 1.689 million km ² , which is larger than the national cultivated land area. In recent years, the groundwater level has continued to decline, the rate of land desertification is increasing at an annual loss of a medium-sized county, and the frequency and intensity of sandstorms are also increasing. The situation of sand control is quite severe. The mechanical sand fixation measures with the setting of sand barriers as the main means, in the arid areas of Northwest China, especially in the extremely arid areas where the precipitation is below 200mm or even tens or tens of millimeters, where afforestation and grass cannot be planted and in permafrost areas where plants cannot grow, sand barriers It is the main measure and even the only measure to fix quicksand. Even in arid or semi-arid areas with a rainfall of 200-400mm, if you want to plant forests and plant grass on mobile sandy land or mobile sand dunes, you must first set up sand barriers to ensure the survival of the plants. Otherwise, it will be eroded by the wind and the plants will not be able to stand. Therefore, setting up sand barriers is known as a pioneer measure for sand control. It is widely used in various countries. Since the sand barrier can fix quicksand and intercept foreign quicksand to prevent quicksand from moving forward, it is often used to protect large-scale engineering facilities such as railways, highways, farmland, pastures, oil fields, power grids, bridges, and canals in sandy areas from being hit by sand, Sand cutting, wind erosion and sand burial.

Most of the sand barriers are made of firewood at home and abroad. For example, the Shapotou section of the Baolan Railway in my country uses wheat straw grid sand barriers; the Mushroom Beach-Jinghe-Shaquan sub-section of the Lanzhou-Xinjiang Railway uses reed ribbon sand barriers and grid sand barriers. In addition, folks often use local materials, and use red willow, white ci, Achnatherum splendens, Artemisia annua, straw, etc. as sand barriers to protect farmland.

The firewood sand barrier is inherited from the ancient operation. It has a remarkable effect on fixing quicksand, but it also has many disadvantages and urgently needs to be reformed. First of all, there is a shortage of firewood in the sandy area. Use it to make sand barriers to compete with livestock for feed, people's livelihood for firewood, and paper industry for raw materials. The vegetation in the sandy area is sparse, and protecting the existing vegetation is one of the important measures for sand control and sand prevention. If it is extracted from it, it will directly violate this protection measure, and it will inevitably damage the ecological environment and cause quicksand to rise. Therefore, it is not advisable to harvest a large amount of local firewood to prevent wind and fix sand, which is like gouging out flesh to mend sores, and drinking poison to quench thirst. For this reason, all countries are trying every means to find new materials that can make sand barriers. What materials to choose to replace firewood to make sand barriers has become the focus of current mechanical sand fixation research. In the 1980s, nylon net sand barriers were successively developed at home and abroad. It is woven from smooth nylon wire with a diameter of 0.7mm, or hung on a column, or surrounded by a frame, and the mesh is evenly distributed. The mesh is about 1mm, similar to civilian use. The screen window also cannot be popularized because of the high cost and the inability of mesh sheets to intersect each other to form a three-dimensional grid resistant to multidirectional winds.

3. Contents of the invention:

1. Purpose of the invention: The present invention provides a multi-directional wind-resistant three-dimensional lattice series polymer vertical sand barrier and its production method. Its purpose is to solve the problem that most of the existing sand barriers are made of firewood and waste agricultural resources. , while the cost of the nylon mesh sand barrier is too high and the mesh cannot intersect with each other to form a three-dimensional mesh against multi-directional winds. However, there is no three-dimensional vertical mesh sand barrier made of polymers that can resist multi-directional winds. The reason is that the production Polymer three-dimensional vertical grid sand barriers fail to solve the problem of mutual intersection of grid walls in technology.

2. Technical solution: the present invention is achieved through the following technical solutions:

A multi-directional wind-resistant three-dimensional grid-shaped series of vertical polymer sand barriers, which includes a sand barrier mesh, which is woven from a polymer flat broadband and nylon filaments; it is characterized in that: the sand barrier Multiple or a whole sand barrier mesh is connected by folding, braiding, bonding, or hot pressing to form an upright structure arranged at intervals, and the mesh walls cross each other to form meshes of different shapes. The sand barrier of the three-dimensional barrier body.

The mesh shape of the grid formed by the sand barrier mesh after being folded and connected is a polygon series, a square series, a rhombus series, a triangle series and a broken line series.

The polygon series is divided into two forms: trapezoidal polygonal structure and hexagonal polygonal structure. The mesh of the trapezoidal polygonal structure is composed of trapezoidal and triangular double intersections; the mesh of the hexagonal polygonal structure is composed of hexagonal and triangular double intersections.

The main specifications of various mesh series are as follows:

①. Trapezoidal and polygonal barriers:

Small mesh per piece: length, width and height are 18m×9m×0.45m;

The upper bottom of trapezoidal mesh is 0.8m, the lower bottom is 2m, and the height is 1.5m; the bottom of triangular mesh is 1.2m, and the height is 1.5m;

Large mesh per piece: length, width and height are 20m×9m×0.45m;

The upper bottom of trapezoidal mesh is 1m, the lower bottom is 2.5m, and the height is 1.5m; the bottom of triangular mesh is 1.5m, and the height is 1.5m;

②, Hexagonal polygon series barriers:

Small mesh per piece: length, width and height are 20m×9m×0.45m;

The long side of the hexagonal mesh is 1.5m, the short side is 0.9m; the bottom of the triangular mesh is 1m, and the height is 0.75m;

Large mesh per piece: length, width and height are 18m×10m×0.45m;

The long side of the hexagonal mesh is 2m, the short side is 1.41m; the bottom of the triangular mesh is 2m, and the height is 1m;

③. Grid-shaped series of barriers:

Each piece of small mesh: the length, width and height are 18m×9m×0.45m, and the square mesh is 1.5m×1.5m;

Large mesh per piece: length, width and height are 20m×10m×0.45m, square mesh 2m×2m;

④. Rhombus series barriers:

Each piece of small mesh: the length, width and height are 20m×10m×0.45m, and the side length of the diamond grid is 1.5m;

Each piece of large mesh: the length, width and height are 18m×10m×0.45m, and the side length of the diamond grid is 1.8m;

⑤. Triangular series barriers:

Each piece of small mesh: the length, width and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.5m;

Each piece of large mesh: length, width, and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.8m;

⑥, zigzag series barriers:

Each piece of small mesh: the length, width and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.5m;

Each piece of large mesh: the length, width and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.8m.

The porosity of the sand barrier mesh is 20%-40%, and the width of the sand barrier mesh is 10-200cm.

The width h of the sand barrier mesh sheet is the height of the sand barrier body, and the width h of the sand barrier mesh sheet is 45cm.

A method for making a multi-directional wind-resistant three-dimensional lattice series of polymer vertical sand barriers, which is characterized in that: first, using weaving technology, a wide polyethylene or polypropylene wide band with a width of 2 to 3 mm is braided with nylon filaments The sand barrier mesh according to the width and porosity required by the design; secondly, multiple or a whole piece of the above-mentioned sand barrier mesh is used to shape the sand barrier mesh by folding, and the sand barrier mesh is stacked into a grid, which is braided Or bonding or ironing way to connect the mesh walls with meshes in contact with each other firmly, so that the sand barrier mesh sheets become an upright structure arranged at intervals to form a three-dimensional barrier body with meshes of different shapes, and this product is obtained.

The folding of the sand barrier mesh is carried out by combining trapezoids and triangles, hexagons and triangles, squares, rhombuses, triangles or broken lines.

The width of the sand barrier mesh obtained by weaving is 10-200cm, the width of the sand barrier mesh is 45cm, and the porosity is between 20%-40%.

3. Advantages and effects: through the implementation of the technical solution of the present invention, it can be well solved that the existing sand barriers are mostly made of firewood, which wastes agricultural resources, and the cost of nylon net sand barriers is too high and cannot form a three-dimensional grid to resist Multi-directional wind, but there is no three-dimensional vertical grid sand barrier made of polymers that can resist multi-directional winds, because the process of making polymer three-dimensional vertical grid sand barriers fails to solve the mutual intersection of mesh walls question. The greatest feature of the sand barrier of the present invention is to solve this difficult problem, to make the grid walls intersect vertically and horizontally to form a three-dimensional structure, and the various grid forms can resist the attack of wind and sand flow in multiple directions. It can be used to fix moving sand dunes, intercept quicksand invasion and prevent desertification. It is also possible to afforestation and plant grass in the sand barrier to create conditions for beautifying and afforesting the mobile sandy land and promoting ecological balance. The sand barrier of the invention can protect railways, transportation, industrial and mining, oil fields, villages, pastures, reservoirs, water channels and farmland in sandy areas from being attacked by primary and secondary primary winds from various angles. It can also resist the attack of local air currents caused by the project itself and local terrain conditions. It has high efficiency and wide applicability to sandy areas with various wind conditions, and has a restraining effect on the source of sandstorms.

4. Description of drawings:

Accompanying drawing 1 is the used sand barrier mesh structural representation of the present invention;

Accompanying drawing 2 is the top view of the structure of the trapezoidal polygonal sand barrier structure for the mesh of the present invention;

Accompanying drawing 3 is the top view of the structure of the sand barrier body whose mesh is a hexagonal polygon of the present invention;

Accompanying drawing 4 is that mesh of the present invention is the top view of the sand barrier body structure of grid shape;

Accompanying drawing 5 is that the mesh of the present invention is the top view of the sand barrier body structure of rhombus;

Accompanying drawing 6 is the top view of the structure of the sand barrier body whose mesh is triangular;

Accompanying drawing 7 is that mesh of the present invention is the top view of the structure of the sand barrier body of zigzag shape;

Accompanying drawing 8 is the annex that sand barrier of the present invention uses-bamboo slat upright column structure schematic diagram.

5. Specific implementation methods:

The present invention is a three-dimensional sand barrier for preventing multi-directional wind and sand hazards. It includes a whole sand barrier mesh or multiple sand barrier meshes. The sand barrier mesh is woven from polymer flat broadband and nylon wire become, it is as the raw material of making sand barrier of the present invention, and concrete structure is shown in Fig. 1. The porosity of the selected sand barrier mesh is between 20% and 40%, and the sand barrier mesh is folded to make it a structure arranged at intervals in the vertical direction, with a three-dimensional structure of different grids. The barrier body is connected and fixed by braiding, bonding, or hot pressing at the contact points of adjacent mesh walls. The width h of the sand barrier mesh sheet is exactly the height of the sand barrier body, and the width h of the sand barrier mesh sheet of the present invention can be selected as 45cm. The mesh shape of the grid formed between the sand barrier nets can be polygon series, square series, rhombus series, triangle series and broken line series, see Figure 2-Figure 7. Among them, the polygon series is divided into two forms: trapezoidal polygon and hexagonal polygon. The first type of trapezoidal polygonal mesh is composed of trapezoidal and triangular double cross composite structures, as shown in Figure 2; the second type of hexagonal polygonal mesh is composed of hexagonal polygonal mesh. Shaped and triangular double cross composite structures are combined, see Figure 3. And the meshes of grid shape, rhombus shape, triangle shape and broken line shape are all single-type structures, and the specific structures are shown in Figures 4, 5, 6, and 7.

The manufacturing method of the multidirectional wind-resistant three-dimensional grid series polymer vertical sand barrier is as follows: firstly, using the weaving technology, the polyethylene or polypropylene wide band 1 with a width of 2 to 3 mm is braided with nylon yarn 2 Sand barrier mesh 3 with the required width and porosity, the sand barrier mesh obtained by weaving has a width of 45cm and a porosity between 20% and 40%; secondly, use multiple or a whole piece of the above sand barrier mesh Sheet 3 adopts a folding modeling method to form a grid structure arranged at intervals in the vertical direction, so that the adjacent sand barrier mesh sheets form a mesh, and the mesh is formed by braiding, bonding or hot pressing. The contact between the net wall and the net wall is firmly connected with fiber rope or nylon rope. The folded sand barrier nets in this way form grids with different shapes of mesh between the straight sand barrier nets. Grid shape, rhombus, triangle or broken line shape, so that a whole sand barrier mesh or multiple sand barrier meshes are connected to form a three-dimensional shape with different grids arranged at intervals in the vertical direction. The barrier body solves the problem of intersecting mesh walls and obtains the sand barrier of the present invention. Among them, except for the diamond-shaped barrier, other kinds of grids can form a horizontal and straight network wall connected with each other as the skeleton of the barrier to resist the attack of the main wind.

The sand barrier of the present invention can be made into various specifications, wherein the commonly used specifications are as follows:

①. The first type of polygon series obstacles:

Small mesh per piece: length, width and height are 18m×9m×0.45m;

The upper bottom of trapezoidal mesh is 0.8m, the lower bottom is 2m, and the height is 1.5m; the bottom of triangular mesh is 1.2m, and the height is 1.5m;

Large mesh per piece: length, width and height are 20m×9m×0.45m;

The upper bottom of trapezoidal mesh is 1m, the lower bottom is 2.5m, and the height is 1.5m; the bottom of triangular mesh is 1.5m, and the height is 1.5m;

②. The second type of polygon series barriers:

Small mesh per piece: length, width and height are 20m×9m×0.45m;

The long side of the hexagonal mesh is 1.5m, the short side is 0.9m; the bottom of the triangular mesh is 1m, and the height is 0.75m;

Large mesh per piece: length, width and height are 18m×10m×0.45m;

The long side of the hexagonal mesh is 2m, the short side is 1.41m; the bottom of the triangular mesh is 2m, and the height is 1m;

③. Grid-shaped series of barriers:

Each piece of small mesh: the length, width and height are 18m×9m×0.45m, and the square mesh is 1.5m×1.5m;

Large mesh per piece: length, width and height are 20m×10m×0.45m, square mesh 2m×2m;

④. Rhombus series barriers:

Each piece of small mesh: the length, width and height are 20m×10m×0.45m, and the side length of the diamond grid is 1.5m;

Each piece of large mesh: the length, width and height are 18m×10m×0.45m, and the side length of the diamond grid is 1.8m;

⑤. Triangular series barriers:

Each piece of small mesh: the length, width and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.5m;

Each piece of large mesh: length, width, and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.8m;

⑥, zigzag series barriers:

Each piece of small mesh: the length, width and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.5m;

Each piece of large mesh: the length, width and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.8m.

Adopt the product cost of the present invention to be cheap:

Polygon series:

Small mesh: 13,400 yuan/ha

Large mesh: 12,000 yuan/ha

Square series:

Small mesh: 10200 yuan/ha

Large mesh: 7700 yuan/ha

The cost of triangular series and polyline series is between polygonal series and square series.

The cost of the polymer polygonal sand barriers of the present invention is slightly less than that of the grass grid sand barriers, while the cost of the polymer square grid series and diamond-shaped sand barriers of the present invention is far less than that of the grass grid sand barriers, even less than the grass grid sand barriers. half of the average barrier cost of 16,950 yuan/ha. Moreover, when the sand barrier product of the present invention is added with the anti-aging agent, there is basically no need for maintenance within three years, which can save a sum of money. It can be seen that the market prospect is broad.

Using the sand barrier of the present invention saves labor, saves time and is convenient to operate. The sand barrier of the present invention adopts the column shown in Figure 8 to support and fix. The uprights can be made from inexpensive bamboo slats with three holes drilled into them. It is very convenient to hang the net wall on the column before setting it up in the field, and then vertically and cutting it. During on-site construction, a 42cm barrier was directly hung on the column. In addition, 3cm is reserved at the lower part of the barrier as a buffer zone. When it encounters a flat sand surface, it can lie flat on the ground; when it encounters an uneven sand surface, it can stand on the ground, so that the barrier body and the sand surface can be fully integrated to prevent the wind from concentrating and eroding the sand surface. If it is inconvenient to obtain bamboo slats, aluminum products can also be used instead. Can also use the iron bar that Φ ₄ is thick to have circular ring as column.

Because the sand barrier body of the present invention can be spliced, the sand barrier can be lengthened or shortened, and the size of the sand barrier can be flexibly determined. The sand barrier of the present invention is highly efficient and multifunctional, adopts a height of 45cm, and the mesh spacing L is not greater than 2×2m. Calculated according to the erosion control formula r=h-L/10, all r values are positive, which indicates that not only will the sand surface inside the barrier not be eroded by wind, but it can also intercept part of the foreign quicksand, and its effect is far greater than that of the low wheat straw grid sand barrier , is also better than the reed sand barrier.

Instructions for use of the product of the present invention:

The polymer grid-shaped vertical sand barrier of the present invention is a sand-fixing type sand barrier, which can be combined with the "three-dimensional foldable and collapsible polymer mesh vertical sand barrier" with the patent number "ZL200420032205.X" authorized by the inventor in areas with abundant sand sources. Wearing and hanging sand barriers are used together to form a prevention and control system combining solid resistance.

Claims (9)

1. A multi-directional wind-resistant three-dimensional lattice series polymer vertical sand barrier, which includes a sand barrier mesh (3), and the sand barrier mesh (3) is woven from a polymer flat broadband and nylon wire ; It is characterized in that: the sand barrier consists of several or one whole sand barrier mesh (3) which are shaped and connected by folding, weaving, bonding, or hot pressing to form an upright structure arranged at intervals , the sand barriers of three-dimensional barriers with mesh walls intersecting each other to form grids of different shapes. 2. The multi-directional wind-resistant three-dimensional lattice series polymer vertical penetrating sand barrier according to claim 1, characterized in that the mesh shape of the grid formed by the sand barrier mesh is polygonal series and square grid after being folded and connected. Series, Rhombus Series, Triangle Series and Polyline Series. 3. The anti-multidirectional wind three-dimensional lattice series polymer vertical penetrating sand barrier according to claim 2, characterized in that: the polygon series is divided into two forms: trapezoidal polygonal structure and hexagonal polygonal structure, wherein the trapezoidal polygonal structure The mesh is composed of trapezoidal and triangular double intersections; the mesh of the hexagonal polygonal structure is composed of hexagonal and triangular double intersections. 4. The multi-directional wind-resistant three-dimensional lattice series polymer vertical penetrating sand barrier according to claim 3, characterized in that: the main specifications of various mesh series are as follows: ①. Trapezoidal and polygonal barriers: Small mesh per piece: length, width and height are 18m×9m×0.45m; The upper bottom of trapezoidal mesh is 0.8m, the lower bottom is 2m, and the height is 1.5m; the bottom of triangular mesh is 1.2m, and the height is 1.5m; Large mesh per piece: length, width and height are 20m×9m×0.45m; The upper bottom of trapezoidal mesh is 1m, the lower bottom is 2.5m, and the height is 1.5m; the bottom of triangular mesh is 1.5m, and the height is 1.5m; ②, Hexagonal polygon series barriers: Small mesh per piece: length, width and height are 20m×9m×0.45m; The long side of the hexagonal mesh is 1.5m, the short side is 0.9m; the bottom of the triangular mesh is 1m, and the height is 0.75m; Large mesh per piece: length, width and height are 18m×10m×0.45m; The long side of the hexagonal mesh is 2m, the short side is 1.41m; the bottom of the triangular mesh is 2m, and the height is 1m; ③. Grid-shaped series of barriers: Each piece of small mesh: the length, width and height are 18m×9m×0.45m, and the square mesh is 1.5m×1.5m; Large mesh per piece: length, width and height are 20m×10m×0.45m, square mesh 2m×2m; ④. Rhombus series barriers: Each piece of small mesh: the length, width and height are 20m×10m×0.45m, and the side length of the rhombus grid is 1.5m; Each piece of large mesh: the length, width and height are 18m×10m×0.45m, and the side length of the diamond grid is 1.8m; ⑤. Triangular series barriers: Each piece of small mesh: the length, width and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.5m; Each piece of large mesh: length, width, and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.8m; ⑥, zigzag series barriers: Each piece of small mesh: the length, width and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.5m; Each piece of large mesh: the length, width and height are 20m×9m×0.45m; the bottom of the triangular mesh is 2m, and the height is 1.8m. 5. The anti-multidirectional wind three-dimensional lattice series polymer vertical sand barrier according to claim 1, characterized in that: the porosity of the sand barrier mesh (3) is 20% to 40%; The width of the sand barrier mesh sheet (3) is 10-200cm. 6. The anti-multidirectional wind three-dimensional lattice series polymer vertical sand barrier according to claim 1, characterized in that: the width (h) of the sand barrier mesh is the height of the sand barrier body, and the sand barrier The width (h) of the barrier net sheet was 45 cm. 7. A method for manufacturing a multi-directional wind-resistant three-dimensional lattice series of polymer vertical sand barriers, which is characterized in that: the method for manufacturing the sand barrier as claimed in claim 1 is as follows: first, using weaving technology, Polyethylene or polypropylene broadband (1) with a width of 2 to 3mm is woven into a sand barrier mesh (3) with the width and porosity required by the design with nylon filaments (2); The above-mentioned sand barrier mesh (3) is shaped by folding, and the sand barrier mesh is stacked into a grid, and the mesh walls in contact with each other are firmly connected by braiding, bonding or hot pressing, so that the sand barrier The net sheets form upright three-dimensional barriers arranged at intervals and form grids with different shapes. 8. The method for making a multi-directional wind-resistant three-dimensional lattice series of polymer vertical sand barriers according to claim 7, characterized in that: the folding of the sand barrier mesh is a combination of trapezoid and triangle, six-sided Combination of shapes and triangles, squares, rhombuses, triangles or broken lines. 9. The method for making a multi-directional wind-resistant three-dimensional lattice series of polymer vertical sand barriers according to claim 7, characterized in that: the width of the sand barrier mesh obtained by weaving is between 10 and 200 cm. The porosity is between 20% and 40%.

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