Earth block product formed by vacuum high-pressure packaging

Abstract

The utility model discloses a soil block product formed by vacuum high-pressure packaging, which comprises a prefabricated soil block formed by wet composite soil mixed with cement through high-pressure forming, the prefabricated soil block is arranged in a vacuum bag, and the vacuum bag is tightly attached and coated outside the prefabricated soil block after being vacuumized and sealed; the prefabricated soil blocks subjected to vacuum packaging are wrapped with geotechnical cloth bags, and ports of the geotechnical cloth bags are closed and tightly sealed; the fiber reinforced cloth bag is tightened and wrapped outside the prefabricated soil block; the formed soil block is formed by adopting easily available soil raw materials, is not easy to digest when being used underwater after being sequentially glued and modified, has certain compressive strength and durability, and is sequentially provided with a vacuum bag, a geotechnical cloth bag and a fiber reinforced cloth bag from inside to outside, so that the prefabricated soil block is isolated from the external environment; seawater erosion and air blowing are avoided, inverted filtering and buffering are formed, prefabricated soil block ablation and material loss are further prevented, the compressive strength of the soil block product is improved, and land and underwater use can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated blocks, in particular to a clay block product formed by vacuum high-pressure packaging. Background Art

[0002] Sandbags are commonly used as stacking units in dam construction, flow blocking, flood control, and emergency rescue. These bags are flexible, easy to stack, and have good airtightness. They can also cushion the impact of water flow. Sand is not easily dissolved by water and can completely fill the bag, maintaining its stacking shape. They also have a high specific gravity and can withstand the pressure of water flow. However, due to the scarcity of sand resources and the over-exploitation of sea and river sand, the original structure of the seabed and riverbed has been damaged, resulting in soil erosion and ecological damage. The government has implemented a series of control measures, resulting in rising sand costs and limited access to sand resources. Compared to sand, soil resources are abundant and easy to mine. Therefore, considering the use of readily available natural soil resources for forming and forming stacking units for use in dam construction, flow blocking, flood control, and emergency rescue, this aligns with resource conservation and sustainable development strategies. Loam and clay soils share the same characteristics as sand, such as flexibility, adaptability to stacking, and high specific gravity. However, their high water absorption significantly reduces their mechanical properties, limiting their use in underwater operations. Utility Model Content

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a vacuum high-pressure packaged clay block product to solve one or more problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A soil block product formed by vacuum and high-pressure packaging. Moist composite soil mixed with a binder is formed into a prefabricated soil block under high pressure. The prefabricated soil block is installed in a vacuum bag. The vacuum bag is vacuum-sealed and tightly wrapped around the outside of the prefabricated soil block. The diameter of the vacuum bag is adapted to the cross-section of the prefabricated soil block. The prefabricated soil block after vacuum packaging is wrapped with a geotextile bag. The geotextile bag is straight-cylindrical, and its bag diameter is larger than the cross-section area of ​​the prefabricated soil block. The two end ports of the geotextile bag are closed and sealed. The outermost layer is a fiber-reinforced cloth bag, which is tightly wrapped around the prefabricated soil block.

[0006] Furthermore, the prefabricated soil blocks are formed into regular hexagonal columns under high pressure.

[0007] Furthermore, the binder is one of lime, cement and fly ash, or a combination of two or three of them.

[0008] Compared with the prior art, the vacuum high-pressure packaged clay block product of the present invention has the following beneficial effects:

[0009] The soil block product is formed with readily available soil raw materials. After being modified by gluing, it is not easy to dissolve when used underwater and has certain compressive strength and durability. The modified prefabricated soil blocks are sequentially provided with vacuum bags, geotextile bags and fiber-reinforced cloth bags from the inside to the outside to isolate the prefabricated soil blocks from the external environment, avoid erosion by running water and weathering by wind, and form inversion filtration and buffering to further prevent the melting of the prefabricated soil blocks and material loss, while further improving the compressive strength of the soil block product. Since the prefabricated soil blocks themselves have a certain shape retention force, compared with sandbags, the three-layer packaging has a longer service life. Therefore, the soil block product can not only be used on land, but also meet the requirements of underwater use. It has the characteristics of good comprehensive mechanical properties, excellent durability and long service life, and can be used as throwing material in dam construction, flow blocking construction, flood control construction and flood relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a three-dimensional diagram of the external structure of the earthen block product disclosed in the present utility model;

[0011] Figure 2 This is a three-dimensional diagram of the cross-sectional structure of the earthen block product disclosed in the present utility model.

[0012] In the figure: 1. Prefabricated soil blocks; 2. Geotextile bags; 3. Vacuum bags; 4. Fiber-reinforced bags. DETAILED DESCRIPTION

[0013] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only the best embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] This embodiment provides a soil block product formed by vacuum high-pressure packaging. The soil raw materials used in the soil block product are loam and clay. Since the compressive strength of loam and clay in their natural state is unstable, after being bagged and piled up, the piled embankment cannot be compacted by external force. The pressure on the soil raw materials will be dispersed in the packaging bags, and the packaging bags are prone to failure. Therefore, in order to extend the underwater service life of the soil raw materials, not only the protection and filtration of the outer packaging are required, but also the soil raw materials need to be modified to give them a certain compressive strength to extend the service life of the outer packaging.

[0015] First, the soil raw materials are modified using a binder. The binders available include lime, cement, and fly ash. If only one of these components is used as the binder, then the amount of lime added is 5%-15%, which can make the modified soil raw materials have good properties and meet the requirements and specifications for the use of soil raw materials. The amount of cement added is 3%-20%, and the mechanical properties of the soil raw materials are already very high. The amount of fly ash added is 10%-40%.

[0016] If any two or three combinations are used as the binder, the amount of cement added is 3%-20%, the amount of lime added is 1.5%-15%, and the amount of fly ash added is 0-20%. When lime and fly ash are combined, the ratio of the two is preferably 1:2-1:3, which has better compressive strength performance. The ratio of cement and lime is preferably 2:1, which has better durability performance. The ratio of cement, lime and fly ash is 2:1:1, which has the best comprehensive performance.

[0017] During the modification process of the binder, the composite soil needs to be matched with the appropriate amount of water. According to the specific binder selected and its proportion, the optimal moisture content test is carried out with reference to the "Standard for Geotechnical Test Methods" to obtain the optimal test moisture content, which is used to guide the water consumption in the modification process. Considering that the prefabricated soil blocks are vacuum-cured after molding, the optimal test moisture content is used as the base to increase the amount of water by 2% as the configuration moisture content. The moisture content of the moist composite soil is controlled at 15%-35%, and the amount of binder and its proportion should be adjusted accordingly.

[0018] like Figure 1-Figure 2 As shown, the moist composite soil modified by watering the binder is formed into a prefabricated soil block 1 by high pressure, eliminating the need for compaction operation after stacking, thereby improving the compressive strength of the prefabricated soil block 1, and increasing the density and specific gravity of the prefabricated soil block 1, thereby improving the comprehensive water pressure resistance performance. The prefabricated soil block 1 is formed into a long regular hexagonal column by high pressure, which is conducive to automatic rolling into place when thrown. At the same time, its structure is conducive to the automatic stacking of the prefabricated soil blocks 1 to form a tight and seamless stack state, reducing the technical difficulty of the throwing construction, and improving the throwing construction efficiency and the success rate of the throwing stacking embankment;

[0019] In order to further improve the service life of the prefabricated soil block 1, prevent the loss of its underwater materials, and protect it from water erosion and wind-blown weathering, a triple protective layer is used to protect and enhance it. First, a vacuum bag 3 is arranged on the outer surface of the prefabricated soil block 1. The vacuum bag 3 also has an adapted caliber and is blown into a hexagonal cylindrical structure. It has a small amount of surplus volume, which is convenient for installation. After vacuuming, the vacuum bag 3 is tightly wrapped around the geotextile bag 2 to isolate the prefabricated soil block 1 from the external environment and prevent water erosion and wind-blown weathering.

[0020] The vacuum-sealed prefabricated soil block 1 is installed in the geotextile bag 2. When the internal vacuum bag 3 fails, the geotextile bag 2 can also play a filtering role to prevent the loss of material in the prefabricated soil block 1 and buffer the erosion of water flow. At the same time, it can also form a protection for the internal vacuum bag 3. Due to the insufficient mechanical properties of the geotextile bag 2, the geotextile bag 2 is straight-cylinder-shaped, which has a large surplus volume, and the diameter area of ​​the bag tube is larger than the cross-sectional area of ​​the prefabricated soil block 1.

[0021] Finally, the outermost layer is a fiber-reinforced cloth bag 4. The encapsulated prefabricated soil block 1 is wrapped with a layer of fiber-reinforced cloth bag 4. The fiber-reinforced cloth bag 4 should be tensioned to apply a certain clamping force to improve the compressive capacity of the prefabricated soil block 1. In addition, the fiber-reinforced cloth bag 4 can increase the relative friction between the contact surfaces of adjacent soil block products and improve the ability of the embankment to withstand horizontal water pressure.

[0022] In addition, this embodiment also provides a molding method for producing the above-mentioned vacuum high-pressure packaged clay block product, comprising the following steps:

[0023] S1: Each batch of molding should use the same soil raw materials and binder, and should use the same ratio. The soil raw materials should be loose dry loam or clay soil collected from the same area. The soil blocks and binder are crushed into small particles and evenly mixed to obtain composite soil;

[0024] Since lime needs to be digested, if the binder is lime or one of the components is lime, first mix the crushed lime with the soil raw materials and then pile them up and let them sit for 2 days; finally, mix in the remaining components.

[0025] S2: The composite soil is passed through a 5mm standard sieve to remove debris and large pieces of raw materials, and then watered to moisten it. The amount of watering is determined using the national standard test method. The final overall moisture content should be controlled at 15%-35%, thereby obtaining a moldable moist composite soil.

[0026] S3: The composite soil should be molded within 4 hours after being sprinkled with water for high pressure molding. The moist composite soil is placed in the hexagonal mold of the molding equipment for high pressure molding. The mold cavity of the hexagonal mold is connected to a vacuum pump. Before molding, the mold cavity containing the moist composite soil is evacuated to remove the gas in the moist composite soil to a certain extent, making it more compact after high pressure molding.

[0027] S4: After the high-pressure forming is completed, three-layer packaging should be carried out immediately to facilitate the maintenance of the high-pressure formed modified prefabricated soil block 1; the innermost layer is a vacuum bag 3, and the vacuum bag 3 is placed outside the prefabricated soil block 1. After heat sealing one end and vacuuming, the other end is heat sealed at the same time;

[0028] S5: Continue to put the geotextile bag 2, the geotextile bag 2 has a large surplus, and close and sew the end opening of the geotextile bag 2;

[0029] S6: The outermost layer is a fiber-reinforced bag 4, which is sleeved on the outside of the prefabricated soil block 1. The end opening of the fiber-reinforced bag 4 is tied tightly to clamp the prefabricated soil block 1 and apply an initial clamping force.

[0030] The descriptions of the directional words such as "end", "inside" and "outside" mentioned in this article are based on Figure 1-Figure 2 These terms are mainly used to better describe the present invention and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation;

[0031] It should be noted that the percentages (%) involved in the ratios and contents mentioned in this article are all mass percentages;

[0032] Moreover, some of the above-mentioned terms may be used to express other meanings in addition to indicating orientation or positional relationships. For example, the term "on" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For ordinary technicians in this field, the specific meanings of these terms in this utility model can be understood according to the specific circumstances.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clay block product formed by vacuum high-pressure packaging, characterized by: The moist composite soil mixed with the binder is formed into a prefabricated soil block by high pressure, and the prefabricated soil block is installed in a vacuum bag. The vacuum bag is vacuum-sealed and tightly wrapped around the prefabricated soil block, and the diameter of the vacuum bag is adapted to the cross section of the prefabricated soil block; The vacuum-sealed prefabricated soil block is wrapped with a geotextile bag, the geotextile bag is straight-cylindrical, the bag opening is larger than the cross-sectional area of ​​the prefabricated soil block, and the end of the geotextile bag is tightly closed; The outermost layer is a fiber-reinforced cloth bag, and the fiber-reinforced cloth bag is tightly wrapped around the outside of the prefabricated soil block.

2. The clay block product formed by vacuum high-pressure packaging according to claim 1, characterized in that: The prefabricated soil blocks are formed into regular hexagonal columns under high pressure.

3. The earthen block product formed by vacuum high-pressure packaging according to claim 1, characterized in that: The binder is one of lime, cement and fly ash, or a combination of two or three of them.

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