Sandbag grid sand barrier and construction method thereof

Abstract

A sandbag grid sand barrier construction method comprises the steps that a non-woven fabric material with certain strength is selected to be made into sandbags; in the area with the square sand barriers, site construction is carried out, local natural accumulated sand is dug to fill the sandbags, and then the sandbags are tied; the sandbag is soaked and wrapped in cement paste, so that the cement paste fully infiltrates the sandbag and permeates into the sandbag by a certain depth, and the cement paste and sand grains in the sandbag are condensed into a whole; after being coated with slurry, the sandbag rolls on the surface of the sand, so that the surface of the sandbag is covered with natural gravels; and the sandbags are stacked into checks according to requirements. The sand bags are filled with the local accumulated sand to manufacture the sand barrier; the sandbag is coated with sand by non-woven fabric, so that the purposes of low cost and durability improvement are achieved.

Description

Technical Field

[0001] The invention relates to a novel sand barrier and a construction method thereof, in particular to a novel sandbag grid sand barrier and a construction method thereof. Background Art

[0002] Grid sand barriers are a commonly used sand fixation measure currently. They can effectively fix the sand dunes below, intercept the movement of wind and sand near the surface, and protect nearby facilities from being buried by wind and sand.

[0003] The existing technology conventionally uses straw grid sand barriers, which are made by laying bundles of discarded wheat straw in a grid shape on the sand, and then rolling them into the sand with a shovel, leaving 1 / 3 or half of the wheat straw to stand naturally on the four sides, and then pushing the sand in the center of the grid to the roots of the wheat straw around, so that the wheat straw stands firmly on the sand. The advantage is that the cost is extremely low and the construction is convenient. The disadvantage is that the straw grid has poor durability and a short protective life. The wind in the windy and sandy areas is often strong. Once a large area of ​​the grass grid sand gap is partially destroyed, wind erosion troughs and wind erosion holes will be formed, and the sand barrier connected to it will be continuously eroded, causing the sand barrier damage area to gradually increase.

[0004] In addition, the prior art also uses PE mesh square sand barriers, which are made of PE mesh materials. The advantages are that PE mesh geotechnical materials have little pollution, are resistant to aging, have low costs, and are easy to construct. The disadvantages are that windy and sandy areas often have strong winds, high temperatures, and strong sunshine. The thin and fragile PE mesh will tear and fail quickly under harsh environments and severe winds, resulting in a greatly shortened protective life. If the thickness of the PE mesh is increased to increase strength, the cost will increase dramatically.

[0005] In short, the grid sand barrier setting adopted in the above-mentioned prior art cannot completely prevent the migration of wind and sand. After the sand barrier fails, a large amount of wind and sand accumulates, which is difficult to remove. Summary of the invention

[0006] In order to solve the defects in the prior art, the present invention discloses a new type of sandbag, and its technical solution is as follows: A new type of sandbag is characterized in that it comprises three layers, the first layer is an outer layer of sand, the second layer is a hard shell layer formed by non-woven fabric material and cement condensation, and the third layer is a hard shell layer formed by cement slurry penetrating into the sand in the bag.

[0007] Based on the above-mentioned novel sandbag, the present invention discloses a sandbag grid sand barrier construction method, wherein the sandbag structure adopts the above-mentioned novel sandbag, and is characterized by: Step 1: Select non-woven fabric material with a certain strength and make it into a sandbag; Step 2: In the area where the square sand barrier is to be set up, construction is carried out on site, local natural sand is dug to fill the sandbags and then the sandbags are tied; Step 3: Soak the sandbags in cement slurry to make the cement slurry fully soak the sandbags and penetrate into the bags to a certain depth, and condense with the sand in the bags to form a whole; Step 4: After the sandbags are coated with slurry, roll them on the sand surface to make the surface of the sandbags covered with natural gravel; Step 5: Arrange the sandbags into squares as required.

[0008] The invention also discloses a sandbag grid sand barrier, which is characterized by adopting the above-mentioned sandbag grid sand barrier construction method.

[0009] The present invention also discloses another sandbag grid sand barrier, which is characterized in that the above-mentioned novel sandbags are used to construct a plurality of grid sand barrier structures in a sandy area. Beneficial Effects

[0010] Sand barriers are made by filling sandbags with local accumulated sand; the sandbags are wrapped with non-woven fabric slurry to achieve the purpose of low cost and improved durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the on-site structural diagram of the grass grid sand barrier; Figure 2 This is the on-site structural diagram of the PE mesh grid sand barrier; Figure 3 This is a schematic diagram of existing geotextiles; Figure 4 Schematic diagram of sandbags made of geotextile; Figure 5 This is the effect picture of geotextile sandbags after filling with sand and hanging slurry; Figure 6 Cut open the sandbags to check the slurry penetration effect; Figure 7 The geotextile sandbags are stacked to form a square sand barrier. The lower left corner shows the sand wrapped after applying slurry, and the lower right corner shows the sand without applying slurry. DETAILED DESCRIPTION

[0012] Geotextile, also known as geotextile, is a water-permeable geosynthetic material made of synthetic fibers through needle punching or weaving. Geotextile is one of the new geosynthetics. The finished product is in the form of cloth. Geotextile is divided into woven geotextile and non-woven filament geotextile. Sand barrier, also known as mechanical sand barrier or wind barrier, is a barrier made of firewood, straw, clay, branches, lath, pebbles and other materials on the sand surface. It is an effective engineering sand fixation measure to reduce wind speed and fix the sand surface. The main function is to fix mobile sand dunes and semi-mobile sand dunes.

[0013] See attached Figure 1-7Said. The present invention adopts non-woven fabric to make sandbags. After filling with sand, the sandbags are soaked in cement slurry for 10 seconds to allow the cement slurry to fully penetrate the sandbags, and then rolled on the sand to make the surface evenly covered with sand. After soaking, they are arranged in a grid shape. After one day, the cement slurry hardens. A total of three layers of protection are formed. The first layer is the outer layer of sand, the second layer is the hard shell layer condensed by the non-woven fabric material and cement, and the third layer is the hard shell layer formed by the cement slurry penetrating into the sand in the bag. Three layers of protection greatly extend the life of the sand barrier at a lower cost.

[0014] The invention discloses a sandbag grid sand barrier construction method, comprising the following steps: (1) Choose non-woven materials with a certain strength. For example, non-woven geotextiles. Non-woven materials such as geotextiles are very low in cost. On the other hand, they can absorb and penetrate cement slurry very well. After the cement slurry solidifies, it can form a whole with the geotextile material and has a certain strength and durability.

[0015] (2) The nonwoven material is made into a cylindrical sandbag. It is recommended that the sandbag be 0.7m long and 0.3m in inner diameter. When the sandbag is filled with sand, an adult male can lift and operate it.

[0016] (3) In areas where sand barriers are required, construction should be carried out on site, using local materials. Local natural sand should be dug up to fill sandbags and then the mouths of the sandbags should be tied to prevent sand from leaking out.

[0017] (4) Soak the sandbags in cement slurry to make the cement slurry fully soak the sandbags and slightly penetrate into the bags to a certain depth. The recommended soaking time is 10 seconds. After the cement slurry penetrates into the bag to a certain depth, it can condense with the sand particles in the bag to form a whole. After the bag body weathers and fails in the future, it can still maintain a certain strength and durability, thereby increasing the overall service life of the sand barrier.

[0018] (5) After the sandbags are coated with slurry, they are rolled on the sand surface so that the surface of the sandbags is covered with natural gravel. In this way, the natural gravel adheres to the outside of the sandbags, which can increase the thickness of the protective layer on the outside of the sandbags at a very low cost and extend the service life of the sandbags.

[0019] (6) Then stack the sandbags into squares as required. The recommended inner frame size of the square is 1m*1m, which has the best overall sand prevention effect.

[0020] The present invention adopts sandbags to make square sand barriers, fully utilizing local accumulated sand and solving the problem of sand removal. The existing non-woven fabric is used to make sandbags, and cement slurry is used to condense cement slurry and non-woven fabric to form a whole, which is low in cost and has a longer service life than single non-woven fabric or cement, and is more durable than conventional straw squares and PE mesh squares. After the slurry is used, the sandbags are rolled on the sand to be evenly coated with gravel, so that a gravel protective layer can be formed on the outside of the sandbag at a very low cost, thereby extending the life of the sandbag.

[0021] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A new type of sandbag, characterized by: It includes three layers. The first layer is an outer layer of sand particles. The second layer is a hard shell layer formed by the non-woven fabric material and cement. The third layer is a hard shell layer formed by the cement slurry penetrating into the sand particles in the bag.

2. A sandbag grid sand barrier construction method, wherein the sandbag structure is the new sandbag according to claim 1, characterized in that: Step 1: Select non-woven fabric material with a certain strength and make it into a sandbag; Step 2: In the area where the square sand barrier is to be set up, construction is carried out on site, local natural sand is dug to fill the sandbags and then the sandbags are tied; Step 3: Soak the sandbags in cement slurry to make the cement slurry fully soak the sandbags and penetrate into the bags to a certain depth, and condense with the sand in the bags to form a whole; Step 4: After the sandbags are coated with slurry, roll them on the sand surface to make the surface of the sandbags covered with natural gravel; Step 5: Arrange the sandbags into squares as required.

3. The sandbag grid sand barrier construction method according to claim 2 is characterized by: The non-woven fabric material is a non-woven geotextile.

4. The sandbag grid sand barrier construction method according to claim 2 is characterized by: The non-woven fabric material is made into a cylindrical sandbag, and the sandbag has a length of 0.7m and an inner diameter of 0.3m.

5. The sandbag grid sand barrier construction method according to claim 2 is characterized by: Soak the sandbags in cement slurry for 10 seconds to allow the cement slurry to fully soak the sandbags.

6. The sandbag grid sand barrier construction method according to claim 2 is characterized by: The inner frame size of the square is 1m*1m.

7. A sandbag grid sand barrier, characterized by: A sandbag grid sand barrier construction method as described in any one of claims 1 to 6 is adopted.

8. A sandbag grid sand barrier, characterized by: The new sandbags described in claim 1 are used to construct a plurality of square sand barrier structures in a sandy area.

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