Sand stabilization sand barrier as well as preparation method and use method thereof

Abstract

The invention relates to the technical field of sand prevention and control, in particular to a sand stabilization sand barrier as well as a preparation method and a use method thereof. The preparation method of the sand stabilization sand barrier comprises the following steps: 1) manufacturing: cotton stalks after cotton harvesting are staggered end to end, stacked and extruded into cotton stalk bundles, and are uniformly bundled by galvanized iron wires to obtain the bundled cotton stalk bundles; 2) paying off: paying off according to a target shape, marking out a sand barrier laying position line, and then uniformly placing the bundled cotton stalks along a line; and (3) cross anchoring is conducted, specifically, the crossed cotton rod handles are inserted in a staggered mode, fixing rods are inserted into sandy soil in the middle points of the cotton rod handles, the cotton rod handles are anchored, and the sand stabilization sand barrier is obtained. According to the sand-fixing sand barrier, the cotton stalks serve as main raw materials, the cotton stalks are stacked and extruded into the cotton stalk handles, then the cotton stalk handles are fixed through the galvanized iron wires and the fixing rods, the physical performance of the sand-fixing sand barrier is effectively improved, and the service life of the sand-fixing sand barrier is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of sand prevention and control, and in particular to a sand-fixing barrier and a preparation method and a use method thereof. Background Art

[0002] Sandstorms pose a major threat to human production and life in sandy areas. The prevention and control of sandstorms is an important guarantee for the economic and social development of sandy areas. In the practice of sand prevention and control, people have developed various forms of sand prevention measures. Laying sand barriers is one of the commonly used measures for sand prevention and fixation. The widely used sand barrier fixation technologies include grass grid sand barriers, clay sand barriers, and chemical fiber sand barriers. At present, the widely used sand barrier fixation technologies include grass grid sand barriers, clay sand barriers, and chemical fiber sand barriers. Grass grid sand barriers are degradable and pollution-free, but they are easy to rot, easy to fall, and have a short service life. Clay sand barriers are made from local materials and are easy to construct, but they are not suitable for areas without rich clay. Sand barriers made of chemical fiber materials have good sand prevention effects, but poor degradability. Therefore, there is still no low-cost and environmentally friendly sand barrier that meets the requirements of sand prevention and fixation. Summary of the invention

[0003] In view of this, the present invention provides a sand-fixing barrier and a preparation method and a use method thereof. The sand-fixing barrier provided by the present invention has low cost, high environmental protection, and significant sand-fixing effect, which solves the problem that the sand barriers in the prior art cannot simultaneously meet the requirements of low cost, environmental protection, and good sand prevention and fixation effects.

[0004] In order to solve the above problems, the present invention provides a sand-fixing barrier and a preparation method and a use method thereof.

[0005] The present invention provides a sand-fixing barrier and a preparation method and a use method thereof, which adopt the following technical solutions:

[0006] A method for preparing a sand barrier comprises the following steps:

[0007] 1) Production: The cotton stalks after harvesting are staggered end to end, piled and squeezed into cotton stalk handles, and evenly bundled with galvanized iron wire to obtain bundled cotton stalk handles;

[0008] 2) Laying out the lines: Laying out the lines according to the target shape, marking the sand barrier layout position lines, and then placing the bundled cotton stalks evenly along the line;

[0009] 3) Cross anchoring: insert the intersecting cotton stalks alternately, and insert a fixed rod into the sand at the midpoint of the cotton stalks to anchor the cotton stalks to obtain a sand-fixing barrier.

[0010] The sand-fixing barrier provided by the present invention uses cotton stalks as the main raw material, and the cotton stalks are piled and squeezed into cotton stalk handles, and then fixed with galvanized iron wire and fixing rods, which effectively improves the physical properties of the sand-fixing barrier and prolongs the service life of the sand-fixing barrier. In addition, the cotton stalks after harvesting cotton in the present invention have a certain amount of moisture and are relatively wet, which can ensure that the cotton stalks have good ductility in the process of preparing the cotton stalk handles.

[0011] Optionally, in step 2), the target shape is a square or a determinant.

[0012] Optionally, when the target shape is a square grid, the side length L1 of the square grid is 1m-1.5m, and when the target shape is a determinant, the row interval is 1m.

[0013] Optionally, the depth a of the staggered insertion of the cotton stalks is 0.1m-0.2m, the length L of the cotton stalks is L=L1+a, in m, and the diameter of the cotton stalks is ≥20cm.

[0014] Optionally, in step 3), the fixing rod is a wooden stake, a wooden stick or a tamarisk branch, the length of the fixing rod is 0.4m-0.5m, and the diameter of the fixing rod is ≥0.02m.

[0015] Optionally, in step 3), the fixing rod is inserted into the sand to a depth of 0.2m-0.25m.

[0016] Optionally, step 1) further comprises pretreating the cotton stalks with a pretreatment liquid before staggering the harvested cotton stalks end to end and piling them up to squeeze them into cotton stalk handles. The pretreatment step comprises soaking the cotton stalks in the pretreatment liquid.

[0017] Optionally, the pretreatment liquid includes the following components: 600g / L-650g / L urea-formaldehyde resin, 40g / L-50g / L polyvinyl alcohol, 8g / L-10g / L ammonium chloride, and 20g / L-30g / L ultraviolet absorber UV-531.

[0018] The pretreatment liquid used in the present invention includes urea-formaldehyde resin, polyvinyl alcohol, ammonium chloride and ultraviolet absorber UV-531. The molecular weight of the above ingredients is relatively small, and they can penetrate into the cotton stalks well. In addition, the urea-formaldehyde resin can undergo a self-crosslinking reaction with the ammonium chloride to form a mesh structure on the fibers of the cotton stalks, thereby improving the bending rigidity of the sand-fixing barrier. In addition, the urea-formaldehyde resin can form a membrane structure on the cotton stalks, thereby also improving the bending rigidity of the sand-fixing barrier, thereby extending the service life of the sand-fixing barrier. In addition, the present invention limits the content of each component of the pretreatment liquid to avoid water loss in the cotton stalks due to excessively high concentrations of the pretreatment liquid, further ensuring that the cotton stalks have good ductility during the preparation of the cotton stalk handles, and also avoiding the inability to form an effective protective layer due to too low concentrations of the pretreatment liquid.

[0019] In addition, the pretreatment liquid used in the present invention also includes an ultraviolet absorber. The present invention utilizes the ultraviolet absorber to absorb ultraviolet rays and convert them into energy release, thereby reducing the damage of ultraviolet rays to the sand-fixing barriers and further extending the service life of the sand-fixing barriers.

[0020] The present invention also provides a sand-fixing barrier, which is prepared by the above-mentioned technical solution.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The sand-fixing barrier provided by the present invention uses cotton stalks as the main raw material. The cotton stalks are piled and squeezed into cotton stalk handles, which are then fixed with galvanized iron wire and fixing rods, thereby effectively improving the physical properties of the sand-fixing barrier and extending the service life of the sand-fixing barrier.

[0023] 2. The present invention also performs a pretreatment liquid soaking and drying treatment on the cotton stalks. The pretreatment liquid components used in the present invention have a small molecular weight and can penetrate well into the cotton stalks. In addition, a self-crosslinking reaction can occur to form a mesh structure and a membrane structure on the fibers of the cotton stalks, thereby improving the bending rigidity of the sand-fixing barrier and extending the service life of the sand-fixing barrier. At the same time, soaking increases the toughness of the cotton stalks, which can ensure that the cotton stalks have good ductility in the process of preparing the cotton stalk handles, and also improves the efficiency of making the cotton stalk handles.

[0024] 3. The pretreatment liquid used in the present invention also includes an ultraviolet absorber. The present invention utilizes the ultraviolet absorber to absorb ultraviolet rays and convert them into energy release, thereby reducing the damage of ultraviolet rays to the sand-fixing barriers and further extending the service life of the sand-fixing barriers. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of a cotton rod handle in Example 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of a grid-shaped sand-fixing barrier in Example 1 of the present invention;

[0027] Figure 3 It is a schematic diagram of the linear sand-fixing barrier in Example 3 of the present invention. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0029] Embodiment 1:

[0030] 1) Production: Stagger the cotton stalks that have just been harvested, pile them up and squeeze them into cotton stalks with a length of 1.1m and a diameter of 20cm, and use 18#, The galvanized iron wire is firmly tied, and three ties are tied. The tying positions are evenly distributed to ensure that the tied cotton stalks are firm and not loose. The schematic diagram of the cotton stalk handle is as shown in Figure 1 shown.

[0031] 2) Laying out the lines: First lay out the lines according to the 1m×1m grid, mark the sand barrier layout position lines, and then place the prepared cotton poles evenly along the line.

[0032] 3) Cross anchoring: Each intersecting cotton stalk is inserted in a staggered manner with a depth of 10 cm, so that the 1m×1m cotton stalk grid is stable. A wooden stake with a diameter of 2 cm and a length of 40 cm is inserted into the sand at the midpoint of each cotton stalk, inserted 20 cm into the sand, and the cotton stalk is anchored to obtain a sand-fixing barrier. The square sand-fixing barrier is as follows: Figure 2 shown.

[0033] Embodiment 2:

[0034] 1) Production: Stagger the cotton stalks that have just been harvested, pile them up and squeeze them into a cotton stalk handle with a length of 1.6m and a diameter of 300cm, and use 18#, The galvanized iron wire is used to tie the cotton stalks firmly, with 3 ties and evenly distributed tying positions to ensure that the tied cotton stalks are firm and not loose.

[0035] 2) Laying out the lines: First lay out the lines according to the 1.5m×1.5m grid, mark the sand barrier layout position lines, and then place the prepared cotton poles evenly along the line.

[0036] 3) Cross anchoring: Each intersecting cotton stalk is inserted in a staggered manner with a depth of 10 cm to make the 1.5m×1.5m cotton stalk grid stable. Insert a wooden stick with a diameter of 3 cm and a length of 50 cm into the sand at the midpoint of each cotton stalk, insert 25 cm into the sand, anchor the cotton stalk, and obtain a sand-fixing barrier.

[0037] Embodiment 3:

[0038] 1) Production: Stagger the cotton stalks that have just been harvested, pile them up and squeeze them into cotton stalks with a length of 1.1m and a diameter of 20cm, and use 18#, The galvanized iron wire is used to tie the cotton stalks firmly, with 3 ties and evenly distributed tying positions to ensure that the tied cotton stalks are firm and not loose.

[0039] 2) Laying out the lines: First lay out the lines at 1m intervals per row, mark the sand barrier layout lines, and then place the prepared cotton poles evenly along the lines.

[0040] 3) Cross anchoring: Each intersecting cotton stalk is inserted in a staggered manner, with a depth of 10 cm, so that the adjacent cotton stalks are stable, and a tamarisk branch with a diameter of 4 cm and a length of 45 cm is inserted into the sand at the midpoint of each cotton stalk, inserted into the sand 25 cm, and the cotton stalk is anchored to obtain a sand-fixing barrier. The linear sand-fixing barrier is as follows: Figure 3 shown.

[0041] Embodiment 4:

[0042] 1) Production: The cotton stalks just harvested are soaked in a pretreatment solution, wherein the components and contents of the pretreatment solution are: 625 g / L urea-formaldehyde resin, 45 g / L polyvinyl alcohol, 9 g / L ammonium chloride, and 125 g / L ultraviolet absorber UV-53. The pretreated cotton stalks are staggered end to end, piled and squeezed into a cotton stalk handle with a length of 1.1 m and a diameter of 20 cm, and then 18#, The galvanized iron wire is used to tie the cotton stalks firmly, with 3 ties and evenly distributed tying positions to ensure that the tied cotton stalks are firm and not loose.

[0043] 2) Laying out the lines: First lay out the lines according to the 1m×1m grid, mark the sand barrier layout position lines, and then place the prepared cotton poles evenly along the line.

[0044] 3) Cross anchoring: Each intersecting cotton stalk is inserted in a staggered manner with a depth of 10 cm to make the 1m×1m cotton stalk grid stable. A wooden stake with a diameter of 2 cm and a length of 40 cm is inserted into the sand at the midpoint of each cotton stalk, inserted 20 cm into the sand, and the cotton stalk is anchored to obtain a sand-fixing barrier.

[0045] Embodiment 5:

[0046] 1) Production: The cotton stalks just harvested are soaked in a pretreatment solution, wherein the components and contents of the pretreatment solution are: 600 g / L urea-formaldehyde resin, 40 g / L polyvinyl alcohol, 8 g / L ammonium chloride, and 120 g / L ultraviolet absorber UV-53. The pretreated cotton stalks are staggered end to end, piled and squeezed into a cotton stalk handle with a length of 1.6 m and a diameter of 300 cm, and 18#, The galvanized iron wire is used to tie the cotton stalks firmly, with 3 ties and evenly distributed tying positions to ensure that the tied cotton stalks are firm and not loose.

[0047] 2) Laying out the lines: First lay out the lines according to the 1.5m×1.5m grid, mark the sand barrier layout position lines, and then place the prepared cotton poles evenly along the line.

[0048] 3) Cross anchoring: Each intersecting cotton stalk is inserted in a staggered manner with a depth of 10 cm to make the 1.5m×1.5m cotton stalk grid stable. Insert a wooden stick with a diameter of 3 cm and a length of 50 cm into the sand at the midpoint of each cotton stalk, insert 25 cm into the sand, anchor the cotton stalk, and obtain a sand-fixing barrier.

[0049] Embodiment 6:

[0050] 1) Production: The cotton stalks just harvested are soaked in a pretreatment solution, wherein the components and contents of the pretreatment solution are: 650 g / L urea-formaldehyde resin, 50 g / L polyvinyl alcohol, 10 g / L ammonium chloride, and 30 g / L UV absorber UV-531. The pretreated cotton stalks are staggered end to end, piled and squeezed into a cotton stalk handle with a length of 1.1 m and a diameter of 20 cm, and then 18#, The galvanized iron wire is used to tie the cotton stalks firmly, with 3 ties and evenly distributed tying positions to ensure that the tied cotton stalks are firm and not loose.

[0051] 2) Laying out the lines: First lay out the lines at 1m intervals per row, mark the sand barrier layout lines, and then place the prepared cotton poles evenly along the lines.

[0052] 3) Cross anchoring: Each intersecting cotton stalk is inserted in a staggered manner with a depth of 10 cm to make the adjacent cotton stalks stable. A tamarisk branch with a diameter of 4 cm and a length of 45 cm is inserted into the sand at the midpoint of each cotton stalk, inserted 25 cm into the sand, and the cotton stalk is anchored to obtain a sand-fixing barrier.

[0053] Data analysis

[0054] The cotton stalks in Examples 1-6 were tested using a strength tester, and the test results are shown in Table 1.

[0055] Table 1. Test results of the breaking strength of the cotton handle in Examples 1-6

[0056] project <![CDATA[Breaking strength / cN·tex -1 > Bending length / cm Example 1 4.91 12 Example 2 4.89 11 Example 3 4.93 12.5 Example 4 5.35 14 Example 5 5.42 15 Example 6 5.29 13.5

[0057] It can be seen from Table 1 that the cotton stalk handle provided by the present invention has good breaking strength and good bending length, which means that the pretreatment liquid provided by the present invention can effectively improve the holding force of the cotton stalk handle and improve its bending stiffness to a certain extent, thereby improving the bending stiffness of the sand-fixing barrier and making the sand-fixing barrier have a longer service life.

[0058] The wind speed reduction rate test was carried out on the sand-fixing barriers in Examples 1-6, and the test results are shown in Table 2.

[0059] Table 2 Test results of wind speed reduction rate of sand-fixing barriers in Examples 1-6

[0060]

[0061]

[0062] It can be seen from Table 1 that the wind-proof efficiency of the sand-fixing sand barrier provided by the present invention can reach more than 50%, which effectively reinforces the sand environment. In addition, the raw materials used in the present invention are cheap, which effectively controls the preparation cost of the sand-fixing sand barrier, and effectively solves the problem that the sand barrier in the prior art cannot simultaneously meet the requirements of low cost, environmental protection, and good sand prevention and fixation effects.

[0063] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a sand-fixing barrier, characterized in that: The following steps are involved: 1) Production: The cotton stalks after harvesting are staggered end to end, piled and squeezed into cotton stalk handles, and evenly bundled with galvanized iron wire to obtain bundled cotton stalk handles; 2) Laying out the lines: Laying out the lines according to the target shape, marking the sand barrier layout position lines, and then placing the bundled cotton stalks evenly along the line; 3) Cross anchoring: insert the intersecting cotton stalks alternately, and insert a fixed rod into the sand at the midpoint of the cotton stalks to anchor the cotton stalks to obtain a sand-fixing barrier.

2. The method for preparing a sand-fixing barrier according to claim 1, characterized in that: In step 2), the target shape is a square or a determinant.

3. The method for preparing a sand-fixing barrier according to claim 2, characterized in that: When the target shape is a square grid, the side length L1 of the grid is 1m-1.5m, and when the target shape is a determinant, the row interval is 1m.

4. The method for preparing a sand-fixing barrier according to claim 3, characterized in that: The depth a of the staggered insertion of the cotton stalks is 0.1m-0.2m, the length L of the cotton stalks is L=L1+a, in m, and the diameter of the cotton stalks is ≥20cm.

5. The method for preparing a sand-fixing barrier according to claim 1, characterized in that: In step 3), the fixing rod is a wooden stake, a wooden stick or a tamarisk branch, the length of the fixing rod is 0.4m-0.5m, and the diameter of the fixing rod is ≥0.02m.

6. The method for preparing a sand-fixing barrier according to claim 1, characterized in that: In step 3), the fixing rod is inserted into the sand to a depth of 0.2m-0.25m.

7. The method for preparing a sand-fixing barrier according to claim 1, characterized in that: Step 1) The cotton stalks are staggered end to end after harvesting the cotton, and before being piled and squeezed into cotton stalk handles, the method further comprises pretreating the cotton stalks with a pretreating liquid, wherein the pretreating step is: soaking the cotton stalks in the pretreating liquid.

8. The method for preparing a sand-fixing barrier according to claim 7, characterized in that: The pretreatment liquid comprises the following components: 600g / L-650g / L of urea-formaldehyde resin, 40g / L-50g / L of polyvinyl alcohol, 8g / L-10g / L of ammonium chloride, and 20g / L-30g / L of ultraviolet absorber UV-531.

9. A sand-fixing barrier, characterized in that: The compound is prepared by the preparation method according to any one of claims 1 to 8.

10. A method for using a sand-fixing barrier, characterized in that: The sand-fixing barrier in the method of use is the sand-fixing barrier described in claim 9.

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