Structure and construction method of flow-state solidified soil shortcut

Abstract

The invention discloses a structure of a flow-state solidified soil shortcut and a construction method, the structure of the flow-state solidified soil shortcut is a layered structure, and comprises a bottom layer and a top layer from bottom to top; the bottom layer and the top layer are both poured with flow-state solidified soil, the mixing amount of a curing agent of the flow-state solidified soil used by the bottom layer is smaller than that of the curing agent of the flow-state solidified soil used by the top layer, and the fluidity and strength of the bottom layer and the top layer are adjusted by adjusting the mixing amount of the curing agent; the bottom layer and the top layer are both poured in a segmented mode. Through a layered pouring process and optimization of a mix proportion, the method has the advantages of being adjustable in strength, high in durability and universality, convenient and fast to construct and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of road construction engineering, and in particular to a structure and construction method of a fluidized solidified soil temporary road. Background Art

[0002] In road construction projects, the construction of temporary or semi-permanent access roads is crucial for ensuring the smooth progress of the project. Traditional access roads are typically constructed using poured concrete, paved with materials such as crushed stone and gravel, or directly compacted soil. However, these traditional access roads present numerous challenges: crushed stone and gravel access roads are prone to loosening and dusting, impacting the surrounding environment and vehicle comfort. They also become muddy during rainy days, significantly reducing traffic capacity. Access roads constructed using directly compacted soil are significantly affected by soil quality, making them difficult to meet the requirements for construction vehicles in soft soil conditions. Furthermore, the selection of materials and construction methods for traditional access roads often fail to fully consider economic efficiency and resource utilization, resulting in high costs and environmental damage. With the advancement of road construction, higher requirements are being placed on the performance and construction efficiency of access roads. Although fluidized soil solidification technology has certain applications in the field of access roads, the existing process has defects such as a single curing agent dosage, insufficient structural strength, cumbersome construction process, and low construction efficiency. Therefore, there is an urgent need for a access road structure and construction method that can take into account strength, fluidity, durability, and is simple to construct, economical and environmentally friendly.

[0003] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. Summary of the Invention

[0004] The purpose of the present invention is to provide a structure and construction method for a fluidized solidified soil temporary road to solve the problems of existing temporary roads such as single curing agent dosage, insufficient structural strength, poor stability, and inconvenient construction, and to meet the demand for temporary or semi-permanent temporary roads in road engineering construction.

[0005] In order to achieve the above objectives, the present invention provides a structure of a fluidized solidified soil walkway, wherein the structure of the fluidized solidified soil walkway is a layered structure, including a bottom layer and a top layer from bottom to top; the bottom layer and the top layer are both cast with fluidized solidified soil, and the curing agent dosage of the fluidized solidified soil used in the bottom layer is less than the curing agent dosage of the fluidized solidified soil used in the top layer. By adjusting the curing agent dosage, the fluidity and strength of the bottom layer and the top layer can be adjusted; the bottom layer and the top layer are both cast in sections.

[0006] Optionally, the curing agent content of the fluidized solidified soil used in the bottom layer is no more than 10%, and the curing agent content of the fluidized solidified soil used in the top layer is 10% to 20%; wherein, the curing agent content refers to the percentage of the added curing agent mass to the original soil mass.

[0007] Optionally, every two adjacent segments of the bottom layer are cast in a stepped shape and matched with each other at the first connection between them; every two adjacent segments of the top layer are cast in a stepped shape and matched with each other at the second connection between them; the treads of the steps are roughened to form a rough contact surface; the length of the treads along the longitudinal direction of the walkway is not less than 1.5m.

[0008] Optionally, the length of each segment of the bottom layer and the top layer is equal, and there is a certain offset between the first connection point and the second connection point in the horizontal direction, and the horizontal distance between the two is not less than 5m.

[0009] Optionally, the thickness of the bottom layer accounts for 40% to 60% of the total thickness of the fluidized solidified soil walkway, the thickness of the top layer accounts for 40% to 60% of the total thickness, and the sum of the thickness proportions of the two is 100%.

[0010] Optionally, a gentle slope is provided at both ends of the access road structure, and the curing agent dosage of the fluidized solidified soil used in the gentle slope is equal to the curing agent dosage of the fluidized solidified soil used in the top layer.

[0011] Optionally, the structure of the fluidized solidified soil walkway further includes a middle layer, which is arranged between the bottom layer and the top layer. The middle layer is cast with fluidized solidified soil, and the curing agent dosage of the bottom layer, middle layer and top layer increases from bottom to top.

[0012] Optionally, the middle layer is cast in sections, and the lengths of each section of the middle layer, bottom layer and top layer are equal. The sections of the middle layer are offset in the horizontal direction relative to the sections of the bottom layer and the top layer. The horizontal distances between the connection between each two adjacent sections of the middle layer and the first connection between each two adjacent sections of the bottom layer and the second connection between each two adjacent sections of the top layer are not less than 5m.

[0013] The present invention also provides a construction method for a fluidized solidified soil access road, comprising the following steps:

[0014] S1. Preliminary preparation, including designing the mix ratio of soil, curing agent and water for fluidized solidified soil;

[0015] S2, pretreatment of access roads;

[0016] S3, material preparation;

[0017] S4, stirring and slurrying;

[0018] S5. Transportation;

[0019] S6, pouring construction, including the following steps:

[0020] S6.1. Before pouring, install the formwork, support and fix the formwork, and check the sealing of the formwork joints;

[0021] S6.2, pouring in layers;

[0022] Specifically, the bottom layer is poured first, and after the bottom layer has initially solidified, the top layer is poured; the bottom layer includes a lower layer and an upper layer, and the fluidized solidified soil used in the lower and upper layers has the same curing agent dosage. During the pouring process of the bottom layer, the lower layer is poured in two layers, the lower layer is poured first, the upper surface of the lower layer is roughened, and then the upper layer is poured and vibrated; during the pouring process of the top layer, the same method of pouring and vibrating in two layers is adopted;

[0023] During the pouring process, the construction shall be carried out symmetrically in sections, with the length of each section not exceeding 100m. The connection between each two adjacent sections shall be made into a stepped shape, that is, there shall be a certain offset distance between the upper and lower layers, which shall not be less than 1.5m. There shall also be an offset distance of not less than 1.5m between the upper and lower layers of the top layer. The horizontal distance between the connection between each two adjacent sections of the bottom layer and the connection between each two adjacent sections of the top layer shall not be less than 5m.

[0024] S7, maintenance management;

[0025] S8. Quality inspection.

[0026] Optionally, step S6.2 further includes pouring the middle layer after the bottom layer has initially set, pouring the middle layer in two layers and vibrating the middle layer, and pouring the top layer after the middle layer has initially set;

[0027] The middle layer is cast in sections symmetrically during the pouring process; the connection between each two adjacent sections is made into a stepped shape, and the staggered distance between the upper and lower layers is not less than 1.5m; the horizontal spacing between the connection between each two adjacent sections of the middle layer and the connection between each two adjacent sections of the bottom layer and the connection between each two adjacent sections of the top layer is not less than 5m.

[0028] Compared with the prior art, the present invention has at least the following beneficial effects:

[0029] 1. Superior performance: By using solidified soil with different curing agent dosages for the bottom and top layers and pouring them in layers and batches, with sufficient distance reserved at the joints of each layer and roughening, the durability of the sidewalk is improved while retaining its overall integrity; by using high-dosage solidified soil gentle slopes on both sides of the sidewalk, the bearing capacity and durability of the sidewalk are improved; compared with traditional sidewalks, it has higher strength and better stability, can effectively withstand the load of construction vehicles, and reduce road damage and the number of repairs.

[0030] 2. Strong adaptability: According to different soil conditions and engineering requirements, the mix ratio and construction process of fluidized solidified soil can be flexibly adjusted to achieve different strengths and fluidities, so that the access road can be smoothly constructed and used in various complex environments, meeting the requirements of different projects for access road strength, bearing capacity and durability.

[0031] 3. Simple construction: The on-site mixing and slurry making and chute or pump pouring method is adopted. The construction process is relatively simple, which reduces a large amount of material transportation and compaction work in traditional access road construction, improves construction efficiency and shortens the construction period.

[0032] 4. Economic and environmentally friendly: Fluidized solidified soil can make full use of local slag and other materials, reducing dependence on traditional materials such as crushed stone and gravel, reducing material costs and transportation costs; at the same time, it reduces the exploitation of natural resources and has good environmental benefits; compared with traditional lime soil compaction and sand and gravel access roads, it reduces dust and reduces environmental pollution problems on construction sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of a fluidized solidified soil walkway according to the present invention;

[0034] Figure 2 It is a partial enlarged view of the bottom structure of the fluidized solidified soil road of the present invention;

[0035] Figure 3 The present invention is a flow chart of the construction method of the fluidized solidified soil access road. DETAILED DESCRIPTION

[0036] The structure and construction method of the fluidized solidified soil access road proposed in the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read them, and are not used to limit the implementation conditions of the present invention, so they have no technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0037] The present invention provides a structure of a fluidized solidified soil access road, such as Figure 1As shown, the structure of the fluidized solidified soil access road is a layered structure, including a bottom layer 2 and a top layer 4 from bottom to top, and both the bottom layer 2 and the top layer 4 are cast with fluidized solidified soil.

[0038] Fluidized solidified soil is a mixture of soil, curing agent and water mixed in a certain proportion to achieve certain performance indicators, and admixtures may be added if necessary. The soil is the raw material for preparing fluidized solidified soil, and is derived from local slag and other materials; the admixture plays an auxiliary role in improving the performance of fluidized solidified soil; the curing agent is crucial for the preparation of fluidized solidified soil, and plays a role in bonding the dispersed soil particles into a whole, filling the gaps between the soil particles, reducing the hydrophilicity of the soil material, improving stability, etc., ultimately allowing the fluidized solidified soil to obtain sufficient strength, durability and suitable fluidity. The dosage of the curing agent refers to the percentage of the mass of the curing agent added to the mass of the original soil material (soil material in a moisture-free state) when preparing fluidized solidified soil. Within a certain range, as the dosage of the curing agent increases, the fluidity of the fluidized solidified soil is significantly reduced, while the strength is significantly improved. Therefore, the performance of the fluidized solidified soil can be adjusted by adjusting the dosage of the curing agent. The curing agent used in the present invention complies with the soft soil curing agent standard CJT 526, for example, ZTSZCCA-02 type curing agent is used.

[0039] The curing agent content of the fluidized solidified soil used in the bottom layer 2 is no more than 10%, and the curing agent content of the fluidized solidified soil used in the top layer 4 is 10% to 20%, which is adjusted according to the expected bearing capacity of the access road. The bottom layer 2 mainly plays a supporting role as a basic stabilization layer. A certain fluidity is ensured by a lower curing agent content, which facilitates the pouring and filling of the fluidized solidified soil and the initial formation of the access road. The top layer 4, as the main load-bearing layer, is poured after the initial setting of the bottom layer 2. The higher curing agent content gives it higher strength to withstand loads such as vehicles. This layered structure can fully utilize the material properties and reduce costs while ensuring strength; and by adjusting the mix ratio, the strength and fluidity can be adjusted to meet the needs of different projects.

[0040] The total thickness of the fluidized solidified soil road is determined according to the actual project requirements and is generally in the range of 30 cm to 50 cm. The thickness of the bottom layer 2 accounts for approximately 40% to 60% of the total thickness, and correspondingly, the thickness of the top layer 4 accounts for approximately 40% to 60% of the total thickness.

[0041] Because access roads are typically several kilometers or even dozens of kilometers long, the fluidized solidified soil access road is cast in sections to facilitate construction. Sectional casting is a casting method that divides the access road into multiple independent sections and constructs them sequentially. Specifically, both the bottom layer 2 and the top layer 4 are cast in sections, with each section being equal in length and no greater than 100 meters. In this embodiment, each section of the bottom layer 2 and the top layer 4 is 100 meters long.

[0042] like Figure 1 As shown, the first connection 1 is the connection between each two adjacent segments of the bottom layer 2. The first connection 1 is cast in a stepped shape, that is, the two adjacent segments are cast in a stepped shape at the connection and match each other. The two adjacent segments are matched together to form a complete strip structure. The tread 11 of the step is roughened to form a rough contact surface to increase the bonding strength between each two adjacent segments. The length of the tread 11, that is, the offset distance between the lower and upper steps along the longitudinal direction of the walkway, is not less than 1.5m. The second connection 5 is the connection between each two adjacent segments of the top layer 4. It is also cast in a stepped shape and has the same structure and dimensions as the first connection 1.

[0043] Furthermore, the segments of the top layer 4 are misaligned in the horizontal direction relative to the segments of the bottom layer 2, that is, the first connection 1 and the second connection 2 do not overlap up and down, but are staggered. In this embodiment, the horizontal distance between the first connection 1 and the second connection 5 closest to it is not less than 5m to prevent the first connection 1 and the second connection 5 from being too close to each other, which may cause the bearing capacity of the walkway around the first connection 1 and the second connection 5 to be reduced.

[0044] Furthermore, a gentle slope 3 is constructed at each end of the access road to reduce the bearing capacity at both ends and improve its durability. In this embodiment, the slope 3 has a gradient of 15°. The curing agent content of the fluidized solidified soil used in the gentle slope 3 is equal to that of the fluidized solidified soil used in the top layer 4. Fluidized solidified soil with a high curing agent content is used for casting to ensure bearing capacity.

[0045] In the second embodiment of the present invention, according to the on-site construction load and passability requirements, a middle layer (not shown in the figure) can be further added between the bottom layer 2 and the top layer 4. The middle layer is also cast with fluidized solidified soil, and its curing agent content is 10% to 15%, and the curing agent content of the bottom layer 2, middle layer and top layer 4 must meet the requirements of increasing from bottom to top, so that the strength of the bottom layer 2, middle layer and top layer 4 increases from bottom to top. When the strength requirement of the fluidized solidified soil temporary road is large and the curing agent content of the top layer 4 and the bottom layer 2 is large, a middle layer with a curing agent content between the two is added as a transition layer to achieve a gradient transition of strength, avoid sudden changes in stiffness, and make the stress distribution continuous, thereby extending the service life of the temporary road. In a specific embodiment, the bottom layer 2 uses fluidized solidified soil with a curing agent content of 10%, the middle layer uses fluidized solidified soil with a curing agent content of 12%, and the top layer 4 uses fluidized solidified soil with a curing agent content of 15%.

[0046] The middle layer is also cast in sections, with each section equal in length to the bottom layer 2 and the top layer 4. Furthermore, the sections of the middle layer are horizontally offset relative to the sections of the bottom layer 2 and the top layer 4. That is, the junctions between every two adjacent sections of the middle layer are staggered with the first junction 1 and the second junction 2. In this embodiment, the horizontal distance between the junctions between every two adjacent sections of the middle layer and the nearest first junction 1 and the nearest second junction 5 is no less than 5 meters.

[0047] The present invention also provides a construction method for a fluidized solidified soil road, such as Figure 3 As shown, the following steps are included:

[0048] S1. Preliminary preparation, including the following steps:

[0049] S1.1. Design the mix ratio. Specifically, soil samples are collected from the construction site for analysis. Physical and chemical properties of the soil are determined through testing. Based on soil characteristics and project requirements, trial mix tests are conducted to determine the optimal mix ratio of soil, curing agent, water, and admixtures for the fluidized solidified soil, ensuring that the project's requirements for strength, fluidity, and durability of the access road are met. The admixture used is a water-reducing agent to improve fluidity. In this embodiment, a powdered polycarboxylate water-reducing agent is used.

[0050] S1.2. Clean the construction site thoroughly, remove weeds, garbage and other debris, and drain any accumulated water in the site promptly to ensure there is no water on the construction surface.

[0051] S2. Pretreatment of the footpath.

[0052] Specifically, a thin layer of soil is evenly spread on the predetermined road surface, with a thickness of 5 to 10 cm. It is then compacted using compaction equipment until the compaction reaches over 90%, providing a smooth and stable road surface foundation for the subsequent pouring of fluidized solidified soil. The compaction of the thin soil refers to the ratio of the actual dry density of the thin soil to the maximum dry density determined by a standard laboratory compaction test. The dry density refers to the density of the thin soil after all moisture has been removed.

[0053] S3. Material preparation.

[0054] Specifically, in this embodiment, slag is selected as the soil material, and the slag is screened to remove organic matter (ensuring that the organic matter content is ≤5%) and large-sized stones (ensuring that the residual stone particle size is ≤50mm) to ensure that the soil material meets the requirements; the curing agent is accurately prepared according to the designed mix ratio, and other materials are prepared.

[0055] S4, stirring and slurrying.

[0056] Specifically, suitable fluidized solidified soil mixing equipment, such as a forced mixer, is selected. Soil, a curing agent, water, and admixtures are added in sequence according to the designed mix ratio and thoroughly stirred to ensure uniform mixing of the materials, thereby producing the fluidized solidified soil. The mixing time and speed are strictly controlled during the mixing process. In this embodiment, the mixing time is controlled to 3 to 5 minutes, and the speed is controlled to 60 to 120 revolutions per minute (r / min) to ensure the quality of the fluidized solidified soil.

[0057] S5. Transportation.

[0058] The on-site mixing and slurrying method is adopted, and the mixed fluidized solidified soil is transported to the pouring site through a chute, pumping equipment or tank truck.

[0059] S6, pouring construction, specifically including the following steps:

[0060] S6.1. Before pouring, install a formwork to restrict the lateral flow of the fluidized solidified soil. The formwork is installed along the designed edge of the walkway, forming a bottomless and uncovered enclosed area. The thin soil layer in step S2 is located within the enclosed area, and the fluidized solidified soil will subsequently naturally spread and fill the enclosed area formed by the formwork. Support and secure the formwork, and verify its strength, rigidity, and stability to ensure it can withstand the lateral pressure of the fluidized solidified soil. The standard value of the lateral pressure of the fluidized solidified soil on the formwork is calculated based on the liquid pressure. Then, check the sealing of the formwork joints to prevent leakage, and add plastic sheeting to the locations of grout seepage and leakage. Remove the formwork 24 hours after the fluidized solidified soil is poured. If the early strength growth of the fluidized solidified soil is slow due to low ambient temperature or other reasons, the removal time can be appropriately extended.

[0061] S6.2. Layered pouring, as follows:

[0062] If the layered structure of the fluidized solidified soil access road only includes the bottom layer 2 and the top layer 4, first pour the fluidized solidified soil with a low content of solidifying agent in the bottom layer 2, and then pour the fluidized solidified soil with a high content of solidifying agent in the top layer 4 after the bottom layer 2 has initially set; during the pouring process of the bottom layer 2, since there is a risk of shrinkage and cracking when pouring a large volume of the bottom layer 2, a two-layer pouring method is adopted, such as Figure 2 As shown, the bottom layer 2 includes a lower layer 21 and an upper layer 22. The curing agent dosage and density of the fluidized solidified soil used in the lower layer 21 and the upper layer 22 are exactly the same. When pouring, the lower layer 21 is poured first, and the upper surface of the lower layer 21 is roughened to improve the bonding strength of the fluidized solidified soil interface between the lower layer 21 and the upper layer 22. Then, the upper layer 22 is poured and vibrated to compact it. During the pouring process of the top layer 4, the same method of pouring and vibrating in two layers is adopted.

[0063] During the pouring process, the pouring is carried out symmetrically in sections, and the length of each section is not more than 100m; the connection between each two adjacent sections is made into a stepped shape, that is, there is a certain offset distance between the upper layer 22 and the lower layer 21, and the offset distance should not be less than 1.5m. There is also an offset distance of not less than 1.5m between the upper and lower layers of the top layer 4; the connection between each two adjacent sections of the bottom layer 2 and the connection between each two adjacent sections of the top layer 4 shall not overlap up and down, and the horizontal spacing shall not be less than 5m.

[0064] If the fluidized solidified soil walkway structure also includes a middle layer, the middle layer is poured first after the bottom layer 2 is initially set. The pouring of the middle layer is also carried out in two layers, upper and lower, and vibrated. After the middle layer is initially set, the top layer 4 is poured. The other steps are the same as those in the case where the fluidized solidified soil walkway layer structure only includes the bottom layer 2 and the top layer 4, and are not repeated here.

[0065] The middle layer is also cast in sections symmetrically during the pouring process; the connection between each two adjacent sections is made into a stepped shape, and the staggered distance between the upper and lower layers of the middle layer is not less than 1.5m; the horizontal spacing between the connection between each two adjacent sections of the middle layer and the connection between each two adjacent sections of the bottom layer 2 and the connection between each two adjacent sections of the top layer 4 is not less than 5m.

[0066] In a specific embodiment, the fluidized solidified soil with a curing agent content of 10% is first poured for the bottom layer 2. After the bottom layer 2 is initially set (about 2 to 3 hours), the fluidized solidified soil with a curing agent content of 15% is poured for the top layer 4. During the pouring process of the bottom layer 2, a two-layer pouring method is adopted. The pouring thickness of the bottom layer 2 is 20 cm. First, a lower layer 21 with a thickness of about 10 cm is poured, and the upper surface of the lower layer 21 is roughened. Then, an upper layer 22 with a thickness of about 10 cm is poured and vibrated to compact it. During the pouring process of the top layer 4, a two-layer pouring and vibration method is also adopted.

[0067] During the pouring process, the pouring is carried out symmetrically in sections, and the length of each section is 100m; the connection between each two adjacent sections is made into a stepped shape, the staggered distance between the upper layer 22 and the lower layer 21 is 1.5m, and the staggered distance between the upper and lower layers of the top layer 4 is also 1.5m; the connection between each two adjacent sections of the bottom layer 2 and the connection between each two adjacent sections of the top layer 4 shall not overlap up and down, and the horizontal spacing shall not be less than 5m.

[0068] In addition, during pouring, the height of conveying equipment such as chutes should not be greater than 1m from the ground. At the same time, the discharge speed should be controlled to avoid direct impact of the discharge material on the formwork support structure.

[0069] S7. Maintenance and management.

[0070] Specifically, after pouring, the surface of the walkway should be promptly covered with plastic film or moist geotextile for moisture-retaining maintenance. Curing should last for 7 to 14 days. Daily inspections should be conducted to ensure the film is tightly covered. Any damage to the film should be promptly repaired to ensure the normal growth of the fluidized solidified soil's strength. During the curing period, vehicles and pedestrians are strictly prohibited from using the walkway.

[0071] S8. Quality inspection includes the following three quality inspection items:

[0072] The fluidity of the fluidized solidified soil is tested on site using the slump cone method. Specifically, during the pouring process, the fluidity of the fluidized solidified soil is tested once every 100m3 of fluidized solidified soil is poured using the slump cone method to ensure that the fluidity deviation is within ±20mm. If the deviation exceeds ±20mm, the mix ratio needs to be adjusted in a timely manner.

[0073] Test the wet density of the access road and test it promptly after pouring to ensure it meets the design standards;

[0074] The unconfined compressive strength test is carried out by making test blocks or sampling cores on site. The test is carried out after 7 days of curing. The test results show that the strength of the temporary road reaches 3MPa, which meets the engineering requirements.

[0075] S9. Subsequent processing.

[0076] Specifically, after the construction is completed, the construction equipment will be cleaned and maintained, the waste will be collected and properly disposed of, the construction site will be cleaned, and the construction site will be kept clean.

[0077] Through the construction method, a fluidized solidified soil temporary road that meets the engineering requirements was successfully built. The temporary road showed good strength and stability during the construction period, providing reliable protection for the passage of engineering vehicles.

[0078] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0079] In the description of the present invention, it should be understood that the terms "center," "height," "thickness," "up," "down," "vertical," "horizontal," "top," "bottom," "inside," "outside," "axial," "radial," "circumferential," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0080] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0081] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0082] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description is not intended to limit the present invention. After reading the above description, various modifications and substitutions of the present invention will become apparent to those skilled in the art. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A structure of a fluidized solidified soil access road, characterized in that: The structure of the fluidized solidified soil access road is a layered structure, comprising a bottom layer (2) and a top layer (4) from bottom to top; The bottom layer (2) and the top layer (4) are both cast using fluidized solidified soil, the amount of curing agent used in the fluidized solidified soil of the bottom layer (2) is less than the amount of curing agent used in the fluidized solidified soil of the top layer (4), and the fluidity and strength of the bottom layer (2) and the top layer (4) are adjusted by adjusting the amount of curing agent; The bottom layer (2) and the top layer (4) are both cast in sections.

2. The structure of the fluidized solidified soil road according to claim 1, characterized in that: The curing agent content of the fluidized solidified soil used in the bottom layer (2) is no more than 10%, and the curing agent content of the fluidized solidified soil used in the top layer (4) is 10% to 20%; wherein the curing agent content refers to the percentage of the added curing agent mass to the original soil mass.

3. The structure of the fluidized solidified soil road according to claim 1, characterized in that: Each two adjacent segments of the bottom layer (2) are cast in a stepped shape at a first connection point (1) therebetween and are matched with each other; each two adjacent segments of the top layer (4) are cast in a stepped shape at a second connection point (5) therebetween and are matched with each other; the treads (11) of the steps are roughened to form a rough contact surface; the length of the treads (11) along the longitudinal direction of the walkway is not less than 1.5 m.

4. The structure of the fluidized solidified soil road according to claim 3, characterized in that: The length of each segment of the bottom layer (2) and the top layer (4) is equal, and there is a certain offset between the first connection point (1) and the second connection point (5) in the horizontal direction, and the horizontal distance between the two is not less than 5m.

5. The structure of the fluidized solidified soil road according to claim 1, characterized in that: The thickness of the bottom layer (2) accounts for 40% to 60% of the total thickness of the fluidized solidified soil walkway, and the thickness of the top layer (4) accounts for 40% to 60% of the total thickness, and the sum of the thickness proportions of the two is 100%.

6. The structure of the fluidized solidified soil road according to claim 1, characterized in that: A gentle slope (3) is respectively provided at both ends of the access road structure, and the curing agent dosage of the fluidized solidified soil used in the gentle slope (3) is equal to the curing agent dosage of the fluidized solidified soil used in the top layer (4).

7. The structure of the fluidized solidified soil road according to claim 1, characterized in that: It also includes a middle layer, which is arranged between the bottom layer (2) and the top layer (4). The middle layer is cast using fluidized solidified soil, and the amount of curing agent added to the bottom layer (2), middle layer and top layer (4) increases from bottom to top.

8. The structure of the fluidized solidified soil road according to claim 8, characterized in that: The middle layer is cast in sections, and the lengths of each section of the middle layer, the bottom layer (2), and the top layer (3) are equal. The sections of the middle layer are offset in the horizontal direction relative to the sections of the bottom layer (2) and the sections of the top layer (4). The horizontal distances between the connection between each two adjacent sections of the middle layer and the first connection (1) between each two adjacent sections of the bottom layer (2) and the second connection (5) between each two adjacent sections of the top layer (4) are not less than 5m.

9. A construction method for the fluidized solidified soil access road according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Preliminary preparation, including designing the mix ratio of soil, curing agent and water for fluidized solidified soil; S2, pretreatment of access roads; S3, material preparation; S4, stirring and slurrying; S5. Transportation; S6, pouring construction, including the following steps: S6.

1. Before pouring, install the formwork, support and fix the formwork, and check the sealing of the formwork joints; S6.2, pouring in layers; Specifically, the bottom layer (2) is poured first, and after the bottom layer (2) is initially solidified, the top layer (4) is poured; the bottom layer (2) includes a lower layer (21) and an upper layer (22), and the curing agent dosage of the fluidized solidified soil used in the lower layer (21) and the upper layer (22) is the same. During the pouring process of the bottom layer (2), the bottom layer (2) is poured in two layers, the lower layer (21) is poured first, the upper surface of the lower layer (21) is roughened, and then the upper layer (22) is poured and vibrated; during the pouring process of the top layer (4), the pouring and vibration method of the top layer (4) is also adopted; During the pouring process, the casting is carried out symmetrically in sections, and the length of each section is not more than 100m; the connection between each two adjacent sections is made into a step-like shape, that is, there is a certain offset distance between the upper layer (22) and the lower layer (21), and the offset distance is not less than 1.5m. There is also an offset distance of not less than 1.5m between the upper and lower layers of the top layer (4); the horizontal distance between the connection between each two adjacent sections of the bottom layer (2) and the connection between each two adjacent sections of the top layer (4) is not less than 5m; S7, maintenance management; S8. Quality inspection.

10. The construction method of the fluidized solidified soil road according to claim 9, characterized in that: The step S6.2 further includes pouring the middle layer after the bottom layer (2) has initially set, the pouring of the middle layer also being carried out in two layers, pouring and vibrating, and pouring the top layer (4) after the middle layer has initially set; The middle layer is cast in sections symmetrically during the pouring process; the connection between each two adjacent sections is made into a step shape, and the staggered distance between the upper and lower layers is not less than 1.5m; the horizontal distance between the connection between each two adjacent sections of the middle layer and the connection between each two adjacent sections of the bottom layer (2) and the connection between each two adjacent sections of the top layer (4) is not less than 5m.

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