Foundation structure based on highly saturated brine crystallization technology and construction method thereof

Abstract

The invention relates to the technical field of construction engineering foundation treatment, in particular to a foundation structure based on a high-saturation brine crystallization technology and a construction method of the foundation structure. The foundation structure comprises a basic primary salt rock bearing layer, a bottom framework cementing layer and a surface sand gravel compensation layer. As the magmatic rocks are very hard, high in density and enough in salt lake chemical environment resistance, the magmatic rocks are directly put into a hypersalinity brine area to form a rigid framework, framework building-in, gap filling and overall cementing are achieved through natural crystallization of salt lake hypersalinity brine, and a core rigid framework of the foundation is formed; the structure can be connected with a primary salt rock bearing layer of a lower foundation to form a stress transmission system, can resist soaking erosion caused by conventional fluctuation of the brine water level, has anti-floating and anti-seepage dual performance, can improve the foundation bearing capacity and the anti-settling capacity, and enables a building newly built on a salt lake to be more stable. Meanwhile, the magmatic rocks are natural materials, so that the salt lake environment is not polluted, and the environmental protection property is good.

Description

Technical Field

[0001] This invention relates to the field of foundation treatment technology for building engineering, and in particular to a foundation structure based on highly saturated brine crystallization technology and its construction method. Background Technology

[0002] With the rapid development of the new energy industry and the booming tourism industry, the demand for infrastructure construction in salt lake areas is constantly increasing. However, the special engineering geological conditions in salt lake areas can easily lead to foundation settlement, deformation, or even instability, seriously affecting the safety and service life of projects and posing a huge challenge to foundation treatment.

[0003] The geological conditions in high-brine salt lake areas are extremely unique. The construction area for building foundations is submerged in highly mineralized brine year-round, and the groundwater level far exceeds the controllable range of conventional foundations. Dewatering operations are difficult, costly, and prone to disturbing the surrounding geological environment. Existing foundation treatment technologies in salt lake areas are mostly suitable for low-brine water level conditions, requiring processes such as layered spreading and mixing with brine after dewatering. These technologies are completely unsuitable for high-water-level conditions. Conventional underwater foundation treatment technologies, such as crushed stone replacement and concrete pouring, are problematic because crushed stone tends to float and disperse in the brine, making it difficult to form a stable framework. Concrete, on the other hand, easily reacts with the high concentration of salt in the brine, leading to strength reduction and decreased durability, thus failing to guarantee the long-term stability of the building foundation. Summary of the Invention

[0004] This invention provides a foundation structure based on highly saturated brine crystallization technology to solve the problem of poor stability of existing building foundations in salt lake areas with high brine levels.

[0005] This invention provides a foundation structure based on highly saturated brine crystallization technology, comprising: A basic primary salt rock bearing layer, wherein the basic primary salt rock bearing layer is located below the surface of the salt lake, and the distance between the basic primary salt rock bearing layer and the surface of the salt lake is a predetermined distance; A bottom skeleton cementing layer is laid on top of the foundation primary salt rock bearing layer. The bottom skeleton cementing layer is formed by laying a first magmatic rock. The first magmatic rock and the first magmatic rock are cemented together by salt cementing formed by the natural evaporation and crystallization of saturated brine. The surface gravel compensation layer is laid on top of the underlying skeleton cementing layer.

[0006] A foundation structure based on highly saturated brine crystallization technology provided by the present invention further includes: A middle buffer reinforcement layer is laid between the bottom skeleton cementing layer and the surface gravel compensation layer. The bottom skeleton cementing layer is formed by laying a mixture of second magmatic rock and rock fragments. The second magmatic rock and the rock fragments, as well as the second magmatic rock and the rock fragments, are all cemented together by salt cementing formed by the natural evaporation and crystallization of saturated brine.

[0007] According to the present invention, a foundation structure based on highly saturated brine crystallization technology is provided, wherein the thickness of the bottom skeleton cementing layer is equal to the predetermined distance, and the predetermined distance is 0.7-0.9m.

[0008] According to the present invention, a foundation structure based on highly saturated brine crystallization technology is provided, wherein the grain size of the first igneous rock is equal to that of the second igneous rock, and the grain size of the first igneous rock is ≤0.5m.

[0009] According to the present invention, a foundation structure based on highly saturated brine crystallization technology is provided, wherein the thickness of the middle buffer reinforcement layer is 0.4-0.6m.

[0010] A foundation structure based on highly saturated brine crystallization technology provided by the present invention further includes: A geomembrane is laid on top of the surface gravel compensation layer.

[0011] According to the present invention, a foundation structure based on highly saturated brine crystallization technology is provided, wherein the thickness of the surface gravel compensation layer is 15-25 cm.

[0012] According to the foundation structure based on highly saturated brine crystallization technology provided by the present invention, the gravel particle size in the surface gravel compensation layer is ≤5cm, and the sand particle size in the surface gravel compensation layer is <0.075mm.

[0013] The present invention also provides a construction method for a foundation structure based on highly saturated brine crystallization technology, the construction method being used for the foundation structure based on highly saturated brine crystallization technology described in any of the above claims, the construction method comprising: The total mineralization of the brine in the construction area was tested, as well as the brine water level elevation and the range of water level fluctuations. The salt crust, silt and impurities within the construction area are excavated using excavation equipment to a predetermined depth to ensure that the original salt rock layer is reached. The first magma rock is poured into the brine in the construction area and compacted to form a bottom skeleton cementing layer, and the bottom skeleton cementing layer is crystallized and cured for a predetermined time. A middle buffer and reinforcement layer is laid on top of the bottom skeleton adhesive layer, and the middle buffer and reinforcement layer is compacted. A surface gravel compensation layer is laid on top of the middle buffer reinforcement layer.

[0014] According to a construction method for a foundation structure based on highly saturated brine crystallization technology provided by the present invention, a geomembrane is laid on the upper part of the surface gravel compensation layer.

[0015] The foundation structure based on highly saturated brine crystallization technology provided by this invention utilizes the extreme hardness and density of magmatic rocks, which possess sufficient resistance to the chemical environment of salt lakes. The magmatic rocks are directly immersed in the high-mineralization brine area to form a rigid framework. Through natural crystallization in the high-mineralization brine of the salt lake, the framework is embedded, gaps are filled, and the entire structure is cemented, forming the core rigid framework of the foundation. This framework not only connects to the underlying primary salt rock bearing layer to form a stress transmission system but also resists the erosion caused by normal fluctuations in brine levels. It possesses both anti-buoyancy and anti-seepage properties, improving the foundation's bearing capacity and anti-settlement ability, making newly constructed buildings on salt lakes more stable. Furthermore, since the magmatic rocks are natural materials, they do not pollute the salt lake environment, making them environmentally friendly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a side view cross-sectional schematic diagram of the foundation structure based on highly saturated brine crystallization technology provided by the present invention.

[0018] Figure label: 10. Basic primary salt rock bearing layer; 20. Bottom layer skeleton cementing layer; 30. Middle layer buffer reinforcement layer; 40. Surface gravel compensation layer; 50. Geomembrane; 60. Concrete cushion layer; 70. Salt crust; 80. Silt. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0020] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0022] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0024] Figure 1 A side view cross-sectional schematic diagram of the foundation structure based on highly saturated brine crystallization technology provided by the present invention is illustrated, as follows: Figure 1As shown, the foundation structure based on highly saturated brine crystallization technology includes a basic primary salt rock bearing layer 10, a bottom skeleton cementing layer 20, and a surface gravel compensation layer 40. The basic primary salt rock bearing layer 10 is located below the surface of the salt lake, and the distance between the basic primary salt rock bearing layer 10 and the surface of the salt lake is a predetermined distance. The bottom skeleton cementing layer 20 is laid on top of the basic primary salt rock bearing layer 10. The bottom skeleton cementing layer 20 is formed by laying first magmatic rocks. The first magmatic rocks are cemented together by salt cementing formed by the natural evaporation and crystallization of saturated brine. The surface gravel compensation layer 40 is laid on top of the bottom skeleton cementing layer 20.

[0025] The foundation structure based on highly saturated brine crystallization technology provided by this invention utilizes magmatic rock as the core aggregate. Its extremely hard and dense physical properties ensure rapid settling without floating after being placed in high-water-level brine, and it can withstand immense pressure. Simultaneously, the excellent chemical stability of magmatic rock provides sufficient resistance to the chemical environment of salt lakes, enabling it to withstand long-term erosion from highly mineralized brine, thus guaranteeing the durability of the foundation material. By directly placing magmatic rock into the highly mineralized brine area to form an initial rigid framework, and using the highly mineralized brine of the salt lake as a natural cementing material, the rock skeleton is embedded, gaps are filled, and the entire structure is cemented through natural evaporation and crystallization, ultimately forming the core rigid framework of the foundation. This process transforms the originally loose stone into a dense and solid whole, significantly improving the integrity and strength of the foundation. This core rigid framework connects tightly with the underlying primary salt rock bearing layer 10, forming an efficient force transfer system that stably transmits the load of the superstructure to the deep bearing layer. Upward, its dense crystallized structure effectively resists immersion and erosion from normal brine level fluctuations, thus possessing dual properties of buoyancy resistance and impermeability. This prevents the ground from being lifted by buoyancy and also inhibits brine erosion of the superstructure. In summary, the combination of these features significantly improves the foundation's bearing capacity and settlement resistance, making newly constructed buildings on the salt lake more stable and safer. Furthermore, since magmatic rock is a natural material, readily available and inexpensive, and the construction process does not introduce external pollutants into the environment, it is environmentally friendly and has minimal impact on the fragile ecosystem of the salt lake.

[0026] In one embodiment of the present invention, the foundation primary salt rock bearing layer 10 is a natural primary salt rock bearing layer. The foundation primary salt rock bearing layer 10 has good integrity and stable bearing capacity, and does not require additional treatment. As the core bearing of the entire foundation, it provides foundation bearing guarantee.

[0027] In one embodiment of the present invention, the foundation structure based on the high-saturation brine crystallization technology further includes a middle buffer reinforcement layer 30. The middle buffer reinforcement layer 30 is laid between the bottom skeleton cementing layer 20 and the surface gravel compensation layer 40. The bottom skeleton cementing layer 20 is formed by laying a mixture of second magmatic rocks and rock fragments. The second magmatic rocks are bonded together with each other, rock fragments with each other, and rock fragments with each other through the natural evaporation and crystallization of saturated brine to form salt cement bodies, thereby forming a secondary skeleton of the foundation. The middle buffer reinforcement layer 30 can offset the lateral pressure and buoyancy generated when the brine level rises to 0.3-0.4m during the rainy season, avoiding deformation and damage of the shallow structure, and at the same time connecting with the bottom skeleton cementing layer 20 to form a continuous load-bearing system.

[0028] The foundation structure based on high-saturation brine crystallization technology also includes a middle buffer reinforcement layer 30, which is laid between the bottom skeleton cementing layer 20 and the surface gravel compensation layer 40. This middle buffer reinforcement layer 30 is formed by laying a mixture of second magmatic rock and rock fragments. This combination of materials with varying particle sizes helps to form a denser structure during accumulation, reducing the initial porosity between aggregates and providing a good dense foundation for subsequent crystallization and cementation. Through the natural evaporation and crystallization of saturated brine, salt cementitious bodies are generated and filled between second magmatic rock and rock fragments, and between second magmatic rock and rock fragments, cementing the originally loose mixed aggregate together, thereby transforming the loose mixture into a cohesive secondary foundation skeleton. Due to its integral structure and its own weight, the intermediate buffer reinforcement layer 30 can effectively cope with the lateral pressure and buoyancy generated on the shallow foundation layer during the rainy season due to the rise in brine water level (e.g., rising to 0.3-0.4m), thereby stabilizing the superstructure and preventing deformation or damage to the shallow structure. Simultaneously, during crystallization and solidification, this layer also effectively bonds with the underlying bottom skeleton cementing layer 20, forming a continuous load-bearing system. This helps to uniformly and continuously transfer the superstructure load to the original salt rock bearing layer 10 of the foundation, improving the overall bearing capacity and stability of the foundation.

[0029] In one embodiment of the present invention, the thickness of the bottom skeleton cementing layer 20 is equal to a predetermined distance, which is 0.7-0.9m. Preferably, the predetermined distance is 0.8m. In this case, the foundation primary salt rock bearing layer 10 is located at an elevation of approximately -0.8m above the salt lake surface, and the bottom skeleton cementing layer 20 is located in the elevation range of -0.8m to 0.0m, that is, the top of the bottom skeleton cementing layer 20 is flush with the salt lake surface.

[0030] In one embodiment of the present invention, the grain size of the first igneous rock is equal to that of the second igneous rock. Setting the grain size of the first and second igneous rocks to be equal helps to standardize the specifications of construction materials, simplifying the procurement, transportation, and on-site management of rock materials, thereby improving the efficiency of construction organization and helping to control material costs. Simultaneously, limiting the grain size of the first igneous rock to ≤0.5m has multiple advantages: firstly, rocks of this size have sufficient individual weight and size, allowing them to sink quickly and accumulate stably when added to brine, thus constructing a preliminary stable framework for the bottom skeleton cementing layer 20 and the middle buffer reinforcement layer 30; secondly, this grain size setting ensures that the voids formed after the rock skeleton is accumulated are of a moderate size, which guarantees that the high-mineralization brine can fully penetrate and flow within the skeleton, providing conditions for the precipitation of salt crystals, and also allows the salt crystals to effectively fill these voids within a reasonable curing period, cementing the discrete rocks into a unified whole, ultimately forming a dense and integral load-bearing structure.

[0031] In one embodiment of the present invention, the thickness of the intermediate buffer reinforcement layer 30 is 0.4-0.6m, and the intermediate buffer reinforcement layer 30 is located in the elevation range of 0.0m to 0.5m. Setting the thickness of the intermediate buffer reinforcement layer 30 to 0.4-0.6m provides sufficient self-weight and structural volume for this layer, enabling it to effectively resist certain lateral pressure and buoyancy, while maintaining economy in terms of material usage and construction costs. The specific thickness of the intermediate buffer reinforcement layer 30 is determined based on the fluctuations in the brine level during the rainy season in the construction area. This design ensures that the brine can enter the intermediate buffer reinforcement layer 30 during the rainy season, providing the necessary conditions for subsequent natural evaporation and crystallization of the brine to achieve bonding between aggregates. Simultaneously, it ensures that the brine level does not exceed the height of the intermediate buffer reinforcement layer 30 at its peak during the rainy season. This design controls the adverse effects of the brine (such as soaking and erosion) within the salt-corrosion-resistant reinforcement layer, thus protecting the upper surface gravel compensation layer 40 and the foundation structure above it from damage. Preferably, the thickness of the intermediate buffer reinforcement layer 30 is set to 0.5m.

[0032] In one embodiment of the present invention, the foundation structure based on the highly saturated brine crystallization technology further includes a geomembrane 50, which is laid on top of the surface gravel compensation layer 40. By setting the geomembrane 50 between the surface gravel compensation layer 40 and the upper building foundation, its function is twofold: firstly, it can prevent the high-mineralization brine below from seeping upwards, thereby avoiding salt erosion of the upper reinforced concrete structure, helping to delay the aging of structural materials, and ensuring the long-term stability of the building; secondly, it also prevents surface water (such as rainwater or industrial water) from seeping downwards, protecting the foundation structure cemented by salt crystals below from dissolution, and maintaining the overall strength and bearing capacity of the foundation.

[0033] In one embodiment of the present invention, the thickness of the surface gravel compensation layer 40 is 15-25 cm, the particle size of the gravel in the surface gravel compensation layer 40 is ≤5 cm, and the particle size of the sand in the surface gravel compensation layer 40 is <0.075 mm. The surface gravel compensation layer 40 serves two purposes: firstly, it fills the voids or pores appearing on the upper surface of the intermediate buffer reinforcement layer 30 by introducing natural gravel sand; secondly, it levels the foundation bottom elevation and connects the intermediate buffer reinforcement layer 30 to form a continuous load-bearing system.

[0034] The present invention also provides a construction method for a foundation structure based on highly saturated brine crystallization technology. The construction method is used for the foundation structure based on highly saturated brine crystallization technology described in any of the above embodiments, and includes: Step S100: Detect the total mineralization of the brine in the construction area, and detect the brine water level elevation and water level fluctuation range.

[0035] To ensure better cementation of magmatic rocks, the total mineralization of brine should be ≥300g / L; accurate detection of brine water level elevation and fluctuation range can delineate the construction boundaries of building foundations.

[0036] Furthermore, before implementing step S100, pre-construction preparations are required: select magmatic rocks with high shear strength, high rigidity, and corrosion resistance from the mountains surrounding the salt lake, screen and crush the magmatic rocks, and then grade and screen them according to particle size of 50mm-500mm and particle size ≤50mm for later use, ensuring that all types of aggregates are hard, free of weathered debris and cracks, and have a compressive strength ≥65MPa, and stack them in graded and zoned areas to avoid mixing.

[0037] Step S200: Excavate the salt crust 70, silt 80 and impurities within the construction area using excavation equipment, at a predetermined depth, to ensure that the original salt rock layer is reached.

[0038] Salt crust 70, silt 80, and impurities were excavated using a backhoe excavator. After excavation, highly saturated brine remained. When excavation reached the primary salt rock layer, a small amount of sludge remaining on top of the primary salt rock layer would not affect subsequent construction. This is because the rock filler, through its own weight and the repeated movement of backfilling machinery, would compact the sludge, pushing it towards the primary salt rock layer without affecting the stability of the foundation.

[0039] Step S300: Pour the first magma rock into the brine in the construction area and compact it to form the bottom skeleton cementing layer 20. Then, crystallize and cure the bottom skeleton cementing layer 20 for a predetermined time. Specifically, the first magmatic rock is continuously poured into the cleared base area into highly saturated brine while excavating. The thickness of the rock is such that it covers the brine level. Utilizing the high density of the magmatic rock aggregate, its own weight and the repeated movement of backfilling machinery compact it, forming a continuous, rigid skeleton without gaps, ensuring tight bonding between the aggregates. By continuously soaking the aggregates in the saturated brine, the brine fully fills the gaps between them. The mixture is then left to settle and undergo natural crystallization and curing. The natural evaporation of water from the brine causes salt crystallization, initially cementing the aggregates.

[0040] Step S400: Lay a middle buffer reinforcement layer 30 on the top of the bottom skeleton adhesive layer 20 and compact the middle buffer reinforcement layer 30. The laying method of the intermediate buffer reinforcement layer 30 is the same as that of the bottom skeleton cementing layer 20, and will not be described in detail here. After the intermediate buffer reinforcement layer 30 is laid, the entire void area of ​​the intermediate buffer reinforcement layer 30 below the brine level and the part soaked by the rising brine in summer will be filled and cemented by solid rock salt crystals, thus forming a very dense structure. Repeated compaction using a heavy roller through vibration will create a very hard layer on the upper surface of the intermediate buffer reinforcement layer 30, which will hardly deform even under the busiest traffic conditions. After compaction, the bearing capacity characteristic value of the foundation is tested through a static plate load test.

[0041] Step S500: Lay a surface gravel compensation layer 40 on top of the intermediate buffer reinforcement layer 30.

[0042] After the surface gravel compensation layer 40 is laid, it is compacted by repeatedly rolling with a heavy roller at least 6 times using vibration. The surface smoothness is adjusted by filling a 0.2m thick gravel layer in the compacted state, ensuring an error ≤20mm. After compaction, the compaction degree is tested using a nuclear density meter, requiring a compaction degree ≥95%.

[0043] In one embodiment of the present invention, a geomembrane 50 is laid on top of the surface gravel compensation layer 40. When laying the geomembrane 50, efforts should be made to minimize the number of welds, saving raw materials while ensuring quality, and also facilitating quality assurance. The welds of adjacent geomembranes 50 should be staggered as much as possible, with the overlap width between membranes generally not less than 10 cm. The geomembrane 50 is welded using a hot welding method, where the surfaces of the geomembranes 50 that are to be joined are heated to melt them, and then fused together by pressure. When the temperature is below 5°C, the welding machine should be preheated before welding. After the geomembrane 50 has been laid and accepted, a concrete foundation layer 60 should be poured immediately to prevent any accidental damage to the membrane.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A foundation structure based on highly saturated brine crystallization technology, characterized in that, include: The basic primary salt rock bearing layer (10) is located below the surface of the salt lake, and the distance between the basic primary salt rock bearing layer (10) and the surface of the salt lake is a predetermined distance; The bottom skeleton cementing layer (20) is laid on the upper part of the basic primary salt rock bearing layer (10). The bottom skeleton cementing layer (20) is formed by laying the first magmatic rock. The first magmatic rock and the first magmatic rock are cemented together by salt cementing formed by the natural evaporation and crystallization of saturated brine. The surface gravel compensation layer (40) is laid on top of the bottom skeleton cementing layer (20).

2. The foundation structure based on highly saturated brine crystallization technology according to claim 1, characterized in that, Also includes: The intermediate buffer reinforcement layer (30) is laid between the bottom skeleton cementing layer (20) and the surface gravel compensation layer (40). The bottom skeleton cementing layer (20) is formed by laying a mixture of second magmatic rock and rock fragments. The second magmatic rock and the rock fragments, as well as the second magmatic rock and the rock fragments, are all cemented together by salt cementing formed by the natural evaporation and crystallization of saturated brine.

3. The foundation structure based on highly saturated brine crystallization technology according to claim 2, characterized in that, The thickness of the bottom skeleton adhesive layer (20) is equal to the predetermined distance, which is 0.7-0.9m.

4. The foundation structure based on highly saturated brine crystallization technology according to claim 2, characterized in that, The grain size of the first igneous rock is equal to that of the second igneous rock, and the grain size of the first igneous rock is ≤0.5m.

5. The foundation structure based on highly saturated brine crystallization technology according to any one of claims 2 to 4, characterized in that, The thickness of the intermediate buffer reinforcement layer (30) is 0.4-0.6m.

6. The foundation structure based on highly saturated brine crystallization technology according to any one of claims 1 to 4, characterized in that, Also includes: A geomembrane (50) is laid on top of the surface gravel compensation layer (40).

7. The foundation structure based on highly saturated brine crystallization technology according to any one of claims 1 to 4, characterized in that, The thickness of the surface gravel compensation layer (40) is 15-25cm.

8. The foundation structure based on highly saturated brine crystallization technology according to any one of claims 1 to 4, characterized in that, The gravel in the surface gravel compensation layer (40) has a particle size ≤ 5 cm, and the sand in the surface gravel compensation layer (40) has a particle size < 0.075 mm.

9. A construction method for a foundation structure based on highly saturated brine crystallization technology, the construction method being used for the foundation structure based on highly saturated brine crystallization technology as described in any one of claims 1 to 8, characterized in that, The construction method includes: The total mineralization of the brine in the construction area was tested, as well as the brine water level elevation and the range of water level fluctuations. The salt crust (70), silt (80) and impurities within the construction area are excavated using excavation equipment. The excavation depth is a predetermined distance to ensure that the original salt rock layer is reached. First magma rock is poured into the brine in the construction area and compacted to form a bottom skeleton cementing layer (20), and the bottom skeleton cementing layer (20) is crystallized and cured for a predetermined time. A middle buffer reinforcement layer (30) is laid on the upper part of the bottom skeleton adhesive layer (20), and the middle buffer reinforcement layer (30) is compacted. A surface gravel compensation layer (40) is laid on top of the middle buffer reinforcement layer (30).

10. The construction method for a foundation structure based on highly saturated brine crystallization technology according to claim 9, characterized in that, A geomembrane (50) is laid on top of the surface gravel compensation layer (40).

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