Foundation humidifying method and humidifying treatment system

Abstract

The invention provides a foundation humidifying method and a humidifying treatment system, and relates to the technical field of foundation treatment. The problems that due to the fact that the water content of a soil layer is low, compaction pile and other foundation treatment modes are difficult to implement, and the implementation result is not ideal are solved. The method comprises the following steps: determining a target area needing to be humidified in a foundation range according to a geological exploration result; measuring the actual moisture content and the optimal moisture content of the soil layer in the target area; according to the difference value between the actual water content and the optimal water content, the total water injection amount needed for humidifying the target area is determined; a plurality of humidifying holes are formed in the soil layer of the target area, and water is injected into the target area for humidifying through the humidifying holes until the water injection rate reaches the total water injection rate. On the basis, the soil layer with the low water content can be effectively humidified through quantitative water, and water resources are saved. The problem that the water content of the soil layer is low is effectively solved, and therefore the problems that due to the low water content, the soil layer is hard, compaction piles are difficult to implement, and the implementation effect is not ideal are solved.

Description

Technical Field

[0001] This application relates to the field of foundation treatment technology, and in particular to a foundation humidification method and humidification treatment system. Background Technology

[0002] Foundation treatment is a crucial part of construction projects, primarily used to improve soil properties to meet specific construction requirements. Taking widely distributed collapsible loess as an example, the frequency of collapsible loess in engineering projects is gradually increasing. Collapsible loess is characterized by its soft structure and well-developed pores; untreated collapsible loess foundations have low bearing capacity and cannot be directly used as foundations for buildings and structures. Therefore, foundation treatment is necessary for collapsible loess, and compaction piles are currently the most commonly used treatment method.

[0003] However, in some collapsible loess areas, the soil layers are hard due to low water content, making hole drilling difficult. Furthermore, the low water content also results in poor compaction, making it difficult to achieve the maximum dry density. These factors make compaction piles difficult to implement and their effect on improving the bearing capacity of the foundation less than ideal. Summary of the Invention

[0004] This application provides a foundation moisturizing method and moisturizing treatment system to solve the problem that foundation treatment methods such as compaction piles are difficult to implement and the results are unsatisfactory due to the low water content of the soil layer.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] Firstly, a method for soil humidification is provided, which includes: determining the target area within the foundation that needs humidification treatment based on geological exploration results; measuring the actual moisture content and optimum moisture content of the soil layer within the target area; determining the total water injection volume required for humidification of the target area based on the difference between the actual moisture content and the optimum moisture content; constructing multiple humidification holes in the soil layer of the target area, and injecting water into the target area through the humidification holes until the water injection volume reaches the total water injection volume.

[0007] The foundation humidification method provided in the first aspect of this application, based on the determination of the total water injection volume, can effectively humidify low-moisture-content soil layers within the foundation area using a fixed amount of water, thus conserving water resources. Effective humidification here includes effectively improving the problem of low soil moisture content, thereby alleviating the problems of hard soil layers, difficulties in implementing compaction piles, and unsatisfactory implementation results caused by low moisture content; it also includes avoiding problems such as soil softening and decreased soil strength caused by excessive humidification.

[0008] In one possible implementation of the first aspect of this application, the total water injection volume is calculated using the following formula:

[0009]

[0010] In the formula:

[0011] Q represents the total water injection volume, in tons (t).

[0012] v represents the total volume of the soil to be moistened within the target area, in meters. 3 ;

[0013] The average dry density of the soil to be moistened within the target area, in t / m³. 3 ;

[0014] ω op The optimum moisture content of the soil to be moistened in the target area is expressed in %;

[0015] The weighted average actual moisture content of the soil to be moistened in the target area is expressed in %;

[0016] k is the diffusion coefficient, with a value ranging from 1.05 to 1.10.

[0017] In one possible implementation of the first aspect of this application, before constructing multiple humidification holes in the soil layer of the target area, the method further includes: determining the number of humidification holes required in the target area based on the total water injection volume; and determining the distribution location of the humidification holes based on the number of humidification holes and the distribution location of the compaction piles in the target area.

[0018] In this way, since the diffusion range of water in a single humidification hole is limited, effective humidification of all locations in the entire target area can be achieved by replenishing water and humidifying various locations in the target area through multiple humidification holes.

[0019] In one possible implementation of the first aspect of this application, determining the distribution location of the humidification holes based on the number of humidification holes and the distribution location of the compaction piles within the target area includes: determining a unit area within the target area, which is enclosed by a plurality of adjacent compaction piles, based on the distribution location of the compaction piles within the target area; using the center location of at least a portion of the unit area as the distribution location of the humidification holes, and distributing one humidification hole in each unit area.

[0020] In one possible implementation of the first aspect of this application, the number of humidification holes is calculated using the following formula:

[0021]

[0022] In the formula:

[0023] Q represents the total water injection volume, in tons (t).

[0024] N represents the number of humidification holes;

[0025] D is the diameter of the humidification hole, which ranges from 1 / 3 to 1 / 2 of the diameter of the compaction pile, and the unit is m;

[0026] The average humidification depth of the humidification holes is expressed in meters (m).

[0027] In one possible implementation of the first aspect of this application, water is injected into the target area through humidification holes to increase humidification until the injection volume reaches the total injection volume. This includes: determining the single-layer injection volume required for each soil layer to increase humidification based on the actual moisture content and optimum moisture content of soil layers at different depths within the target area; and, based on the single-layer injection volume, injecting water quantitatively into each soil layer of the target area through the humidification holes, so that the sum of the injection volumes of each soil layer reaches the total injection volume.

[0028] In this way, the amount of water injected into each soil layer with different moisture content can be further refined to increase the moisture content of each soil layer. This allows for layered and quantitative water injection into different soil layers, ensuring that each soil layer with different moisture content in the foundation area is moistened in a targeted manner, thereby further guaranteeing effective moistening of the entire foundation area.

[0029] In one possible implementation of the first aspect of this application, the single-layer water injection volume is calculated using the following formula:

[0030]

[0031] In the formula:

[0032] Q i This represents the water injection volume per layer of the i-th soil layer, in tons.

[0033] v i The total volume of the soil to be moistened in the i-th soil layer is expressed in m³. 3 ;

[0034] The average dry density of the soil to be moistened within the target area, in t / m³. 3 ;

[0035] ω op The optimum moisture content of the soil to be moistened in the target area is expressed in %;

[0036] is the average actual moisture content of the i-th soil layer, in %;

[0037] k is the diffusion coefficient, with a value ranging from 1.05 to 1.10.

[0038] In one possible implementation of the first aspect of this application, when constructing humidification holes in the soil layer of the target area, the depth of the humidification holes is greater than the depth of the compaction piles in the target area. This allows water to effectively humidify the soil layer surrounding the compaction piles through the humidification holes, ensuring the humidification effect.

[0039] Secondly, a humidification system is provided, applying the aforementioned foundation humidification method. This humidification system includes a water pipe, a water supply assembly, a spray assembly, and a lifting assembly. The water pipe is inserted into the foundation requiring humidification, and its wall has multiple water passage holes distributed at least along the axial direction of the pipe. The water supply assembly includes a water pump, a water supply pipe, and a flow meter installed on the water supply pipe; the outlet of the water pump is connected to one end of the water supply pipe. The spray assembly is located inside the water pipe, and its inlet is connected to the other end of the water supply pipe. The lifting assembly is connected to the spray assembly and drives the spray assembly to move axially along the water pipe to adjust the spray position.

[0040] The humidification treatment system provided in the second aspect of this application precisely controls the amount of water injected based on the actual moisture content of the foundation and even the actual moisture content of soil layers at different depths of the foundation, thereby achieving effective and appropriate humidification of the foundation. Furthermore, it can precisely adjust the water injection position through the lifting component, thereby achieving layered and precise humidification control. This can effectively improve the problem of difficulty in implementing compaction piles and poor implementation results caused by low foundation moisture content, and at the same time avoid the problems of excessive soil moisture, reduced bearing capacity, and easy collapse caused by excessive humidification.

[0041] In one possible implementation of the second aspect of this application, the humidification system further includes a water-blocking piston, which is disposed inside the water pipe and connected to the lifting assembly. The water-blocking piston is located below the water spray assembly in the direction of gravity, and the edge of the water-blocking piston contacts the inner wall of the water pipe. Attached Figure Description

[0042] Figure 1 A main flowchart of a foundation moistening method provided in this application embodiment;

[0043] Figure 2 A schematic diagram illustrating the operating state of a humidification system provided in an embodiment of this application;

[0044] Figure 3 for Figure 2 A schematic diagram of the distribution structure of humidification holes and compaction pile holes;

[0045] Figure 4 for Figure 2 A schematic diagram of another distribution structure of humidification holes and compaction pile holes;

[0046] Figure 5 for Figure 2 A schematic diagram of the water pipe structure in the middle;

[0047] Figure 6 for Figure 2 A schematic diagram of the water spray assembly in the diagram;

[0048] Figure 7 for Figure 2 A schematic diagram of the water-blocking piston in the middle.

[0049] Figure label:

[0050] 10-Water pipe, 101-Water hole, 11-Pipe body, 111-Grid, 12-Cover, 20-Water supply assembly, 21-Water supply pump, 22-Water supply pipe, 23-Flow meter, 30-Spray assembly, 31-Spray head, 32-Connector, 40-Lifting assembly, 41-Winding device, 42-Traction rope, 50-Water-blocking piston, 60-Control assembly, 70-Foundation, 701-Unit area, 71-Humidification hole, 72-Pile hole, 721-Reduced diameter structure. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0052] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0053] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0054] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed connection, a detachable connection, or an integral part; it may be a direct connection or an indirect connection through an intermediate medium.

[0055] As described in the background section above, construction projects usually go through a foundation treatment process. For foundations mainly composed of collapsible loess, compaction piles (such as lime-soil compaction piles) are generally used to compact the soil, thereby reducing the porosity of the soil layer and improving the bearing capacity of the foundation.

[0056] Due to factors such as climate and environment, the soil moisture content in some collapsible loess areas is low, resulting in hard soil layers that make it difficult to construct pile holes for compaction piles, thus making the implementation of compaction piles quite difficult. In addition, even if pile holes for compaction piles are constructed, the low soil moisture content and hard soil layers greatly reduce the compaction effect of the compaction piles, and ultimately the effect of improving the bearing capacity of the foundation is difficult to achieve as expected.

[0057] Therefore, for collapsible loess areas with low soil moisture content, the primary step in foundation treatment is to improve the low soil moisture content, thereby providing favorable conditions for subsequent compaction pile operations.

[0058] Therefore, this application provides a method for soil moistening to improve the problem of low soil moisture content. Please refer to... Figure 1 , Figure 1 This is a main flowchart of a foundation humidification method provided in an embodiment of this application.

[0059] Step S100: Based on the geological exploration results, determine the target area within the foundation 70 that needs to be humidified.

[0060] Specifically, for the area that needs to be used as the foundation of a construction project, a geological survey will be conducted in the early stage. Based on the results of the geological survey, areas with low soil moisture content can be identified, which will then be the target areas for humidification treatment, thus determining the scope of the target area.

[0061] It should be noted that the scope of the target area mentioned above includes both the planar scope on the ground and the depth scope below the ground, that is, the scope refers to the scope in three-dimensional space.

[0062] In some embodiments, after step S100, the planning of compaction piles and the trial driving of pile holes 72 can be carried out, that is, the following step S110 can be performed to further determine the condition of the underground soil layer and prepare for subsequent construction steps.

[0063] Step S110: Based on the scope of the target area, plan the number, size and distribution of compaction piles within the target area, and based on the planning results, test drive some of the compaction pile holes 72; wherein the size of the compaction pile includes the diameter and depth.

[0064] Specifically, based on the specific geological exploration results, compaction pile holes 72 can be drilled in a localized area within the target region. This will further determine the condition of the underground soil layers and provide operational space and channels for subsequent soil layer testing.

[0065] For example, please refer to Figure 2 , Figure 2 This is a schematic diagram illustrating the operating state of a humidification system provided in an embodiment of this application. Figure 2 The diagram shows the schematic structure of the pile hole of the compaction pile. It can be seen that after the pile hole 72 is driven out, the soil layers with lower water content or higher porosity will form a protrusion on the hole wall due to the squeezing effect between the soil layers, which forms the diameter reduction structure 721 of the pile hole.

[0066] Therefore, the location of the reduced diameter structure 721 of the pile hole 72 represents a soil layer with relatively lower water content or higher porosity, providing a reference for subsequent humidification operations. For example, it may be necessary to strengthen humidification at the location of the reduced diameter structure 721, or to pay attention to the possibility of collapse at the corresponding soil layer.

[0067] Step S200: Determine the actual moisture content and optimum moisture content of the soil layer within the target area.

[0068] Specifically, in-situ testing is conducted on the target area. For example, soil samples are collected in situ and tested on-site to determine the actual moisture content and optimum moisture content of the soil layer. The optimum moisture content can be determined through a compaction test. Furthermore, the actual moisture content and optimum moisture content can be tested separately for multiple soil layers at different depths.

[0069] Step S300: Determine the total amount of water required for humidification of the target area based on the difference between the actual moisture content and the optimum moisture content.

[0070] It should be noted that the determination of the total water injection volume may need to be further combined with other parameters of the target area, and the total water injection volume represents the amount of water required to raise the soil layer in the target area from the current actual moisture content to the optimum moisture content.

[0071] The total water injection volume can be calculated using the following formula:

[0072]

[0073] In the formula:

[0074] Q represents the total water injection volume, in tons (t).

[0075] v represents the total volume of the soil to be moistened within the target area, in meters. 3 It can be determined by calculating the planar and depth ranges of the target area;

[0076] The average dry density of the soil to be moistened within the target area, in t / m³. 3 The net weight and volume of the soil can be calculated, and the soil layer can be sampled and measured.

[0077] ω op The optimum moisture content of the soil to be moistened in the target area is expressed in %;

[0078] The weighted average actual moisture content of the soil to be moistened within the target area is expressed in %. It can be calculated by weighting the thickness of each soil layer at different depths.

[0079] k is the diffusion coefficient, with a value ranging from 1.05 to 1.10.

[0080] For example, the weighted average actual moisture content of the soil to be moistened within the target area is calculated by weighting the thickness of each soil layer at different depths, as shown in the following formula:

[0081]

[0082] In the formula:

[0083] ω i The moisture content of the i-th soil layer is expressed in %;

[0084] d i The thickness of the i-th soil layer is in meters.

[0085] ∑d i This represents the sum of the thicknesses of all soil layers, expressed in meters (m).

[0086] It should be noted that the total water injection volume calculated based on the above formula is an estimated value within a reasonable range, not an exact value. However, since the 70% humidification of the foundation does not require high precision, the estimated value also meets the requirements.

[0087] In some embodiments, after step S300, the number and distribution of humidification holes 71 can be planned based on the total water injection volume, i.e., the following steps S310 and S320 are performed.

[0088] Step S310: Determine the number of humidification holes 71 required for the target area based on the total water injection volume.

[0089] Specifically, the humidification holes 71 (similar to well structures) serve as water replenishment channels for the soil layers in the target area. Water is injected into the humidification holes 71 and then further diffuses into the soil layers surrounding them. Since the diffusion range of water in a single humidification hole 71 is limited, multiple humidification holes 71 are needed to replenish and humidify various locations within the target area to achieve effective humidification across the entire target area. The specific number of humidification holes 71 can be calculated and determined based on the total water injection volume; that is, the total water injection volume can be dispersed through a certain number of humidification holes 71.

[0090] For example, the formula for calculating the number of humidification holes is as follows:

[0091]

[0092] In the formula:

[0093] Q represents the total water injection volume, in tons (t).

[0094] N represents the number of humidification holes 71;

[0095] D is the diameter of the humidification hole 71. Based on the predetermined diameter of the compaction pile, the diameter of the humidification hole 71 can be 1 / 3 to 1 / 2 of the diameter of the compaction pile, in meters.

[0096] The average humidification depth of the humidification hole 71 is expressed in meters (m).

[0097] It should be noted that the average humidification depth of the humidification well 71 is the average of the humidification depths of each humidification well 71. The humidification depth represents the actual thickness of the stratum requiring humidification within the humidification well 71, which can be determined through preliminary geological exploration. Specifically, the soil conditions may vary in different local areas within the target region. For example, in some local areas, the soil moisture content from the surface to a depth of 5m is low, requiring humidification treatment; in this case, the humidification depth would be 5m. Of course, the physical depth of the humidification well 71 itself is generally greater than the humidification depth. Similarly, in other local areas, the soil moisture content from the surface to a depth of 10m may be low; in this case, the humidification depth would be 10m.

[0098] Therefore, through preliminary geological exploration, the average humidification depth in the target area can be determined. Since the humidification holes 71 are usually evenly distributed in the target area, the average humidification depth in the target area can be used as the average humidification depth of the humidification holes 71.

[0099] Step S320: Determine the distribution location of the humidification holes 71 based on the number of humidification holes 71 and the distribution location of the compaction piles in the target area.

[0100] Specifically, after determining the number of humidification holes 71 through step S310, based on the basic plan that the humidification holes 71 are evenly distributed in the target area, the specific distribution location of the humidification holes 71 can be further determined by combining the distribution location of the compaction piles in the target area. It should be noted that at this time, the compaction piles and their pile holes 72 may not have been constructed in the target area yet. The distribution location of the compaction piles can refer to the planned location in the aforementioned step S110.

[0101] In some embodiments, please refer to Figure 3 and Figure 4 , Figure 3 for Figure 2 A schematic diagram of a distribution structure of the humidification hole 71 and the pile hole 72 of the compaction pile. Figure 4 for Figure 2 A schematic diagram of another distribution structure of the humidification hole 71 and the pile hole 72 of the compaction pile.

[0102] Combination Figure 2 , Figure 3 and Figure 4 The distribution of the humidification holes 71 is determined through the following steps S321 and S322:

[0103] Step S321: Based on the distribution of compaction piles within the target area, determine the unit area 701 within the target area, which is enclosed by multiple adjacent compaction piles.

[0104] Specifically, the compaction piles (i.e., pile holes 72) within the target area 701 are typically distributed uniformly, or more specifically, in an array-like distribution structure. Taking the array-like distribution structure as an example, this allows for the determination of the compaction pile locations, and the distribution structure of the compaction piles divides the target area into multiple unit areas 701 on the ground surface. Each unit area 701 is enclosed by multiple pile holes 72 of adjacent compaction piles.

[0105] For example, Figure 3 The image shows a rectangular unit region 701 formed by a rectangular array of compaction piles. Figure 4 The diagram shows a triangular unit region 701 formed by a triangular array of compacted piles.

[0106] Step S322: The distribution location of the humidification holes 71 is determined by the center position of at least a portion of the unit region 701, and one humidification hole 71 is distributed within one unit region 701.

[0107] Specifically, based on the array-like distribution of the compaction piles, regardless of the specific form of the array distribution structure, the unit area 701 enclosed by the compaction piles has a central position (i.e., a geometric center). Therefore, this central position can be used as the planned distribution location of the humidification holes 71. In this way, for the multiple compaction piles enclosing the unit area 701, the distance from the humidification hole 71 to each compaction pile is the same. Therefore, the diffusion distance of the water in the humidification hole 71 to each compaction pile is the same, thereby ensuring a consistent humidification effect at the location of each compaction pile and enhancing the consistency of the subsequent compaction effect of each compaction pile.

[0108] It should be noted that, given the potential difference between the number of humidification holes 71 and the number of compaction piles, as well as the varying humidification requirements within the target area, in some cases, not every unit area 701 will be planned to have humidification holes 71. Figure 3 and Figure 4The main feature is the unit area 701 with humidification holes 71. Even if some unit areas 701 have humidification holes 71 and others do not, from the macroscopic perspective of the target area, the multiple humidification holes 71 can still be evenly distributed within the target area.

[0109] Step S400: Construct multiple humidification holes 71 in the soil layer of the target area, and inject water into the target area through the humidification holes 71 to increase humidity until the water injection volume reaches the total water injection volume.

[0110] Specifically, based on the number and location of the humidification holes 71 determined in the aforementioned steps, humidification holes 71 are constructed in the soil layer of the target area. For example, humidification holes 71 can be constructed in the soil layer using drilling tools or pile driving equipment. Then, a humidification treatment system is installed on the ground surface at the location of the humidification holes 71, and water is injected into the humidification holes 71 through the humidification treatment system to humidify the soil layer of the target area.

[0111] In some examples, multiple humidification holes 71 can be filled with water simultaneously. For instance, multiple water outlets can be set up based on the same humidification system, and water can be filled into different humidification holes 71 respectively until the total water volume reaches the total water volume. Of course, multiple humidification holes 71 can also be filled with water sequentially. In this case, the water volume of each humidification hole 71 can be obtained by evenly distributing the total water volume based on the number of humidification holes 71 until the total water volume after each humidification hole 71 is filled with water sequentially reaches the total water volume.

[0112] In some embodiments, when constructing the humidification hole 71, the depth of the humidification hole 71 is made greater than the depth of the compaction pile (specifically the pile hole 72 of the compaction pile) in the target area. This allows water to effectively humidify the soil layer around the compaction pile through the humidification hole 71, ensuring the humidification effect.

[0113] In some embodiments, when water is injected through the humidification hole 71, the following steps S410 and S420 can be used to further refine the control of water volume for each soil layer based on the different soil layers in the target area (the soil layers are divided based on the different moisture contents), thereby ensuring the humidification effect.

[0114] Step S410: Determine the amount of water injected per layer required for moisturizing each soil layer based on the actual and optimum moisture content of the soil layers at different depths within the target area.

[0115] Specifically, based on the aforementioned geological exploration results, the actual moisture content of each soil layer can be determined. Combined with the optimum moisture content, the required single-layer water injection volume for moistening that soil layer can be calculated. The optimum moisture content of a single soil layer can be the same as the optimum moisture content of the entire target area, because the optimum moisture content is influenced by the soil type. If the soil types within the target area are the same, then the optimum moisture content of the soil layers can be the same. For example, in the aforementioned collapsible loess area, the soil type within the target area is all collapsible loess. The moisture content of collapsible loess in different soil layers varies, but because the soil type is the same, the overall optimum moisture content can be the same.

[0116] Therefore, based on the aforementioned method for calculating the total water injection volume, the water injection volume for a single soil layer can be calculated in the same way, as shown in the following formula:

[0117]

[0118] In the formula:

[0119] Q i This represents the water injection volume per layer of the i-th soil layer, in tons.

[0120] v i The total volume of the i-th soil layer to be moistened can be calculated based on the thickness of the soil layer and the surface area of ​​the target area, in meters. 3 ;

[0121] The average dry density of the soil to be moistened within the target area, in t / m³. 3 ;

[0122] ω op The optimum moisture content of the soil to be moistened in the target area is expressed in %;

[0123] is the average actual moisture content of the i-th soil layer, in %;

[0124] k is the diffusion coefficient, with a value ranging from 1.05 to 1.10.

[0125] Step S420: Based on the single-layer water injection volume, water is injected quantitatively into each soil layer of the target area through the humidification hole 71, so that the sum of the water injection volumes of each soil layer reaches the total water injection volume.

[0126] Specifically, water is injected into the corresponding soil layer according to the determined single-layer water injection volume until the single-layer water injection volume is reached. In addition, combining the two water injection methods mentioned above through the humidification holes 71, namely simultaneous water injection through multiple humidification holes 71 and sequential water injection, there are also two methods when performing layered water injection.

[0127] Specifically, if multiple humidification holes 71 are used for simultaneous water injection, then during layered water injection, water can be injected simultaneously into a specific soil layer through multiple humidification holes 71, meaning that water is injected and humidified at different local locations within the corresponding surface of the soil layer at the same time. If multiple humidification holes 71 are used for sequential water injection, then during layered water injection, water is injected and humidified sequentially into different local locations within the corresponding surface of the soil layer through different humidification holes 71. In this case, the amount of water injected into each humidification hole 71 for that soil layer can be evenly distributed based on the amount of water injected into a single layer and the number of humidification holes 71.

[0128] This application provides a method for soil humidification. Based on the determination of the total water injection volume, a fixed amount of water can be used to effectively humidify the low-moisture-content soil layer within a 70% area of ​​the foundation, thus saving water resources. Effective humidification here includes effectively improving the problem of low soil moisture content, thereby alleviating the problems caused by low moisture content, such as hard soil layers, difficulties in implementing compaction piles, and unsatisfactory implementation results; it also includes avoiding problems such as soil softening and decreased soil strength caused by excessive humidification.

[0129] In addition, the amount of water injected into each soil layer with different moisture content can be further refined to increase the moisture content of each soil layer. This allows for layered and quantitative water injection into different soil layers, ensuring that each soil layer with different moisture content within the foundation 70 area is moistened in a targeted manner, thereby further guaranteeing effective moistening of the entire foundation 70 area.

[0130] Based on the above-described foundation humidification method, in some other embodiments, this application also provides a humidification treatment system. Please refer to further details. Figure 2 The humidification system includes a water pipe 10, a water supply component 20, a water spray component 30, and a lifting component 40. The water injection principle is as follows: the water pipe 10 is inserted into the foundation 70, and the humidifying water enters the water spray component 30 through the water supply component 20. The water spray component 30 sprays the humidifying water into the water pipe 10, and the humidifying water diffuses into the soil layer of the foundation 70 through the water pipe 10. The lifting component 40 is used to adjust the height of the water spray component 30 inside the water pipe 10.

[0131] Furthermore, the water pipe 10 can be inserted into the humidification hole 71 of the foundation 70, and its diameter matches the diameter of the humidification hole 71. The wall of the water pipe 10 is provided with multiple water passage holes 101, which are distributed at least along the axial direction of the water pipe 10. For example, the multiple water passage holes 101 can also be distributed along the circumference of the water pipe 10, that is, the multiple water passage holes 101 are distributed both along the axial direction and the circumference direction. The water pipe 10 serves to provide a channel for water injection and also functions to protect the wall of the humidification hole 71, preventing the hole from collapsing.

[0132] The material of the water pipe 10 includes, but is not limited to, plastic or stainless steel. The cross-sectional shape of the water pipe 10 includes, but is not limited to, circular, square, elliptical, triangular, etc.

[0133] In some examples, please refer to [link / reference]. Figure 2 And further reading Figure 5 , Figure 5 for Figure 2 The diagram shows the structure of the water pipe 10. A grid 111 is provided at the water passage hole 101. The grid 111 serves to filter sediment and prevent sediment from entering the water pipe 10 through the water passage hole 101. Of course, in some other examples, the water passage hole 101 may also be an open opening without a grid 111.

[0134] The water supply assembly 20 includes a water supply pump 21, a water supply pipe 22, and a flow meter 23 installed on the water supply pipe 22. The outlet of the water supply pump 21 is connected to one end of the water supply pipe 22, and the other end of the water supply pipe 22 is connected to the water spray assembly 30. The water supply pump 21 provides the power for water delivery, ensuring a continuous supply of humidifying water and enhancing its diffusion effect in the soil by providing initial kinetic energy. The water supply pipe 22 can be a flexible or rigid pipe, and the flexible material includes, but is not limited to, plastic. The flow meter 23 installed on the water supply pipe 22 monitors the water flow rate. Based on the water flow monitoring information, the flow rate is precisely adjusted by the water supply pump 21 to match the water injection volume with the actual needs of the target area and even specific soil layers. In this way, water waste can be effectively avoided, and the target area and even each soil layer can obtain suitable moisture, thereby ensuring that the humidification effect achieves the expected result.

[0135] The water supply pump 21 can be a positive displacement pump, centrifugal pump, axial flow pump, etc., and the positive displacement pump can specifically be a gear pump, screw pump, piston pump, or pneumatic diaphragm pump, etc. As long as it can stably supply humidifying water to the water spray assembly 30 and has a flow rate regulation function, this application does not make specific limitations.

[0136] In addition, the water supply pump 21 can be further equipped with a booster function, such as a positive displacement booster pump, to give it a wider pressure adjustment range. By adjusting its output pressure, the flow rate of humidifying water supplied to the water spray assembly 30 can be controlled more precisely. In combination with the overall and layered humidification needs of the foundation 70, it can provide an appropriate flow rate for soil layers of different depths and densities, thereby ensuring that each target soil layer can obtain appropriate moisture and reducing the problem of over- or under-humidification caused by unstable flow rate.

[0137] In other embodiments, the water supply pump 21 can be replaced by a high-level water storage tank with a flow control valve. The water storage tank is positioned above the water pipe 10, and the water storage tank is connected to the water spray assembly 30 via the water supply pipe 22. The water flows naturally to the water spray assembly 30 using the gravitational potential energy generated by the water level difference. This method requires no additional power unit and is suitable for scenarios where the water supply pressure requirement is not high.

[0138] The water spray assembly 30 is disposed inside the water pipe 10, and its inlet is connected to the water supply pipe 22. The water spray assembly 30 is used to spray humidifying water. It can be a mist sprayer, which converts the humidifying water into an atomized state. This atomization allows the water to be distributed more evenly within the water pipe 10, ensuring that all parts of the soil receive adequate moisture, thus bringing the moisture content of each soil layer closer to its optimum. Alternatively, in other embodiments, the water spray assembly 30 can be similar to a shower head or a direct-spray structure.

[0139] The lifting assembly 40 is connected to the water spray assembly 30. The lifting assembly 40 is used to drive the water spray assembly 30 to move along the axial direction of the water pipe 10 to adjust the water spray position.

[0140] This application provides a humidification system that precisely controls the water injection volume based on the actual moisture content of the foundation 70 and even the actual moisture content of soil layers at different depths of the foundation 70. This achieves effective and appropriate humidification of the foundation 70. Furthermore, the system can precisely adjust the water injection position through the lifting component 40, thereby achieving layered and precise humidification control. This effectively improves the problem of difficulty in implementing compaction piles and poor implementation results caused by low moisture content of the foundation 70, while also avoiding excessive soil moisture, reduced bearing capacity, and easy collapse caused by over-humidification.

[0141] In some embodiments, please continue reading Figure 5 The water pipe 10 includes a pipe body 11 and a cover 12. A water passage hole 101 is provided in the pipe body 11, and the cover 12 is assembled to the top of the pipe body 11. The assembly method of the pipe body 11 and the cover 12 includes, but is not limited to, detachable assembly and non-detachable assembly. This allows the components inside the water pipe 10 to be installed inside the pipe body 11 before the cover 12 is assembled, facilitating installation. Furthermore, the cover 12 may have through holes for connecting the components inside the pipe body 11 to corresponding external components.

[0142] In some embodiments, please continue reading Figure 5Multiple water passage holes 101 at local locations along the axial direction of the water passage pipe 10 are arranged along the circumference of the inclined cross-section of the water passage pipe 10, forming a group of water passage holes 101. In a group of water passage holes 101, the distance between two adjacent water passage holes 101 along the circumference of the water passage pipe 10 is a first distance a. Along the axial direction of the water injection pipe body 11, the distance between the two inclined cross-sections containing two adjacent groups of water passage holes 101 along the axial direction of the water injection pipe body 11 is a second distance h, and the second distance h is greater than the first distance a.

[0143] The relationship between the second distance h and the first distance a ensures that the coverage areas of two adjacent sets of water passage holes 101 are continuously connected in the axial direction. Specifically, this ensures that the transition portions of the coverage areas of two adjacent sets of water passage holes 101 overlap, effectively preventing the occurrence of humidification blind spots. Simultaneously, the inclined section is tilted at a certain angle, unlike the horizontal distribution of the vertical section, causing the same set of water passage holes 101 to exhibit a staggered distribution pattern in the axial direction, thereby expanding the axial coverage angle of a single set of water passage holes 101.

[0144] Furthermore, the number of water passage holes 101 in each group can be set according to actual needs. For example, each group can be set to 3, 4, 5 or more water passage holes 101. Of course, the layout of the water passage holes 101 on the inclined section and the second distance h and the first distance a between two adjacent groups of water passage holes 101 can also be adjusted according to actual needs to adapt to the humidification requirements of different foundations 70.

[0145] In some embodiments, please continue reading Figure 2 And further reading Figure 6 , Figure 6 for Figure 2 A schematic diagram of the water spray assembly 30 is shown. The water spray assembly 30 includes a nozzle 31 and a connector 32, with the connector 32 located at the water inlet of the nozzle 31. The nozzle 31 is generally cylindrical and has multiple spray sections distributed axially along the water pipe 10, thus creating a spray area of ​​a certain width along the axial direction of the water pipe 10. The connector 32 is used to connect to the water supply pipe 22 of the water supply assembly 20 to supply water to the nozzle 31.

[0146] In some embodiments, please continue reading Figure 2 The lifting assembly 40 includes a winding device 41 and a traction rope 42 with one end wound around the winding device 41. The other end of the traction rope 42 is connected to the water spray assembly 30. The winding device 41 drives the traction rope 42 to wind around itself, thereby causing the water spray assembly 30 to move axially along the water pipe 10. In this way, through the connection between the traction rope 42 and the water spray assembly 30, and by utilizing the driving action of the winding device 41, precise control of the water spray assembly 30 is achieved.

[0147] In practical operation, the height of the water spraying component 30 can be flexibly adjusted according to the moisture content requirements of different soil layers at different depths of the foundation 70, thereby ensuring that the humidification of each soil layer reaches the preset standard. In addition, the cooperation between the winding device 41 and the traction rope 42 simplifies the operation process, improves work efficiency, and provides a more convenient and efficient solution for the humidification treatment of the foundation 70.

[0148] In some examples, the winding device 41 may include a rotary drive and a winding structure connected to the rotary drive. The rotary drive includes, but is not limited to, a motor or a combination of a motor and a reducer, and the winding structure includes, but is not limited to, a winding drum or a winding shaft. One end of the traction rope 42 is wound around the winding structure. In this way, the method of achieving precise position control of the water spray assembly 30 through the cooperation of the winding device 41 and the traction rope 42 is simple to operate and highly efficient.

[0149] In some examples, the traction rope 42 includes, but is not limited to, soft ropes and rigid ropes with a certain stiffness. Soft ropes include, but are not limited to, fiber ropes, wire ropes, or metal chains, etc., while rigid ropes include, but are not limited to, steel strips, steel bars, etc. When the traction rope 42 is a soft rope, the traction direction of the traction rope 42 can be from the bottom end of the water pipe 10 to the top end of the water pipe 10 to pull the water spray assembly 30, so that the water spray assembly 30 sequentially humidifies multiple layers of the foundation 70 from bottom to top. Soft ropes are easy to wind onto a winding structure with a small diameter, making them convenient to store and helping to reduce the volume of the winding device 41, while also reducing costs. When the traction rope 42 is a rigid rope, the traction direction of the traction rope 42 can be from the bottom end of the water pipe 10 to the top end of the water pipe 10, or from the top end of the water pipe 10 to the bottom end of the water pipe 10, which provides more flexible control.

[0150] Whether using soft or rigid ropes, the diverse options allow the lifting assembly 40 to better adapt to different construction environments and foundation treatment requirements 70. Soft ropes offer flexibility and low cost, making them suitable for projects with conventional depths and strict limitations on equipment size, while rigid ropes provide rigidity and bidirectional traction advantages, making them more suitable for complex geological conditions or scenarios requiring extremely high movement precision.

[0151] In some embodiments, please continue reading Figure 2 And further reading Figure 7 , Figure 7 for Figure 2A schematic diagram of the water-blocking piston 50 is shown. A water-blocking piston 50 is also provided inside the water pipe 10. The water-blocking piston 50 is connected to the lifting assembly 40 and is located below the water spray assembly 30 along the axial direction of the water pipe 10. This "below" refers to the direction below along the gravitational force. The edge of the water-blocking piston 50 is in sealed contact with the inner wall of the water pipe 10 and can move axially along the water pipe 10. The water-blocking piston 50 is used to block the water sprayed from the water spray assembly 30 above the water-blocking piston 50.

[0152] Specifically, when the water spray assembly 30 injects water into a soil layer within the water pipe 10, it is necessary to ensure that the moistening water does not affect other soil layers. This requires preventing the moistening water from flowing downwards under gravity. Therefore, a water-blocking piston 50 is installed below the water spray assembly 30. The water-blocking piston 50 prevents the moistening water from flowing downwards under gravity, allowing any moisture that has not yet diffused into the corresponding soil layer to remain above the water-blocking piston 50. The blocking effect of the water-blocking piston 50 forces the water to penetrate laterally into the current soil layer, forming a directional infiltration path together with the corresponding water passage 101. Based on this, the water-blocking piston 50 and the water spray assembly 30 need to be able to rise and fall synchronously under the drive of the lifting assembly 40.

[0153] Furthermore, the materials of the water-blocking piston 50 include, but are not limited to, plastics and rubber. The water-blocking piston 50 can be in the form of a sheet, plate, or block, etc.

[0154] For example, the water-blocking piston 50 has a structure with thinner edges and a thicker middle section, meaning its cross-section is tapered. In this way, when the water-blocking piston 50 is in operation, the middle section directly bears the impact force of the water sprayed from the water spray assembly 30. The thicker middle section enhances structural strength, preventing deformation or damage from long-term impact. The edges need to fit tightly against the inner wall of the water pipe 10 to prevent water leakage. The thinner edges are more prone to elastic deformation, thus better conforming to the pipe wall, improving sealing performance, and preventing water from seeping downwards through the gap between the edges and the pipe wall. Of course, the thickness of the edge section of the water-blocking piston 50 can also be greater than or equal to the thickness of the middle section.

[0155] In some examples, there is a certain distance between the water-blocking piston 50 and the water spray assembly 30 along the axial direction of the water pipe 10, and the size of this distance affects the humidification accuracy of the humidification assembly. For example, if the distance between the water-blocking piston 50 and the water spray assembly 30 is too large, the water sprayed by the water spray assembly 30 and the water blocked by the water-blocking piston 50 will not be able to humidify the same foundation layer 70.

[0156] Based on this, for example, the distance between the water-blocking piston 50 and the water spraying assembly 30 can be less than or equal to 1.2m, for example, it can be 0.5m, 0.8m, 0.9m, 1.0m, or 1.2m. It can also be further reduced to less than or equal to 0.5m, for example, it can be 0.45m, 0.47m, 0.49m, 0.51m, 0.53m, or 0.55m. It is understood that if the distance between the water-blocking piston 50 and the water spraying assembly 30 is too large, the water sprayed by the water spraying assembly 30 will have more space to diffuse downwards within the water pipe 10, exceeding the effective blocking range of the water-blocking piston 50. This causes some water to bypass the water-blocking piston 50 and seep into the lower non-target soil layer, thus affecting the accuracy of stratified humidification. Controlling the distance to within 1.2 meters allows the water-blocking piston 50 to be closer to the water spraying assembly 30, effectively blocking the water before it diffuses significantly.

[0157] In some embodiments, please continue reading Figure 2 The humidification system also includes a control component 60, which includes, but is not limited to, a microcontroller. The control component 60 is electrically connected to components such as the flow meter 23, the water supply pump 21, and the lifting assembly 40. The control component 60 can accurately determine whether the current water spraying status meets the preset humidification plan. If the water spraying position deviates from the target soil layer or the water spraying flow rate does not match the requirements, the control component 60 can quickly adjust the drive speed of the winding device 41 and the flow output of the water supply pump 21 to ensure that the spraying assembly is adjusted to the correct position in a timely manner and performs humidification operations at an appropriate flow rate. This intelligent control mechanism can improve the accuracy and efficiency of the humidification treatment of the foundation 70.

[0158] Meanwhile, the control component 60 can automatically plan the movement path and water flow sequence of the spray component 30 based on the preset humidification target and the actual moisture content distribution of the foundation 70, realizing automated and intelligent layered humidification treatment. Operators only need to input the basic information of the foundation 70 and the humidification target, and the system can automatically complete the subsequent processing procedures, greatly improving the convenience and intelligence of construction.

[0159] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for soil moistening, characterized in that, include: Based on the geological exploration results, the target area within the foundation area that requires humidification treatment was determined; Determine the actual moisture content and optimum moisture content of the soil layer within the target area; Based on the difference between the actual moisture content and the optimal moisture content, the total amount of water required for humidifying the target area is determined; Multiple humidification holes are constructed in the soil layer of the target area, and water is injected into the target area through the humidification holes to increase humidity until the total water injection volume is reached.

2. The foundation moistening method according to claim 1, characterized in that, The total water injection volume is calculated using the following formula: In the formula: Q represents the total water injection volume, in tons (t). v represents the total volume of the soil to be moistened within the target area, in meters. 3 ; The average dry density of the soil to be moistened within the target area, in t / m³. 3 ; ω op The optimum moisture content of the soil to be moistened in the target area is expressed in %; The weighted average actual moisture content of the soil to be moistened in the target area is expressed in %; k is the diffusion coefficient, with a value ranging from 1.05 to 1.

10.

3. The foundation moistening method according to claim 1, characterized in that, Before constructing multiple humidification pores in the soil layer of the target area, the method further includes: Based on the total water injection volume, determine the number of humidification holes required for the target area; The distribution location of the humidification holes is determined based on the number of humidification holes and the distribution location of the compaction piles within the target area.

4. The foundation moistening method according to claim 3, characterized in that, The distribution location of the humidification holes is determined based on the number of humidification holes and the distribution location of the compaction piles within the target area, including: Based on the distribution of the compaction piles within the target area, a unit area is determined within the target area, which is enclosed by a plurality of adjacent compaction piles. The distribution location of the humidification holes is determined by the center position of at least a portion of the unit regions, and one humidification hole is distributed within each unit region.

5. The foundation moistening method according to claim 3, characterized in that, The number of humidification holes is calculated using the following formula: In the formula: Q represents the total water injection volume, in tons (t). N represents the number of humidification holes; D is the diameter of the humidification hole, which ranges from 1 / 3 to 1 / 2 of the diameter of the compaction pile, and the unit is m; The average humidification depth of the humidification holes is expressed in meters (m).

6. The method for soil moistening according to any one of claims 1 to 5, characterized in that, Water is injected into the target area through the humidification holes to increase humidity until the total water volume is reached, including: Based on the actual moisture content and the optimal moisture content of soil layers at different depths within the target area, determine the amount of water injected per layer required for moisturizing each soil layer. Based on the single-layer water injection volume, water is injected quantitatively into each soil layer of the target area through the humidification holes, so that the sum of the water injection volumes of each soil layer reaches the total water injection volume.

7. The foundation moistening method according to claim 6, characterized in that, The single-layer water injection volume is calculated using the following formula: In the formula: Q i This represents the water injection volume per layer of the i-th soil layer, in tons. v i The total volume of the soil to be moistened in the i-th soil layer is expressed in m³. 3 ; The average dry density of the soil to be moistened within the target area, in t / m³. 3 ; ω op The optimum moisture content of the soil to be moistened in the target area is expressed in %; is the average actual moisture content of the i-th soil layer, in %; k is the diffusion coefficient, with a value ranging from 1.05 to 1.

10.

8. The method for soil moistening according to any one of claims 1 to 5, characterized in that, When constructing the humidification holes in the soil layer of the target area, the depth of the humidification holes is greater than the depth of the compaction piles in the target area.

9. A humidification system, characterized in that, The foundation humidification method according to any one of claims 1 to 8, wherein the humidification treatment system comprises: A water pipe is used to insert into the foundation that requires humidification treatment. The wall of the water pipe is provided with a plurality of water passage holes, and the plurality of water passage holes are distributed at least along the axial direction of the water pipe. A water supply assembly, comprising a water supply pump, a water supply pipe, and a flow meter installed on the water supply pipe, wherein the outlet of the water supply pump is connected to one end of the water supply pipe; A water spray assembly is disposed inside the water pipe, and the water inlet of the water spray assembly is connected to the other end of the water supply pipe. A lifting assembly is connected to the water spray assembly, and the lifting assembly is used to drive the water spray assembly to move along the axial direction of the water pipe to adjust the water spray position.

10. The humidification system according to claim 9, characterized in that, Also includes: A water-blocking piston is disposed inside the water-passing pipe and connected to the lifting assembly. The water-blocking piston is located below the water-spraying assembly in the direction of gravity, and the edge of the water-blocking piston is in contact with the inner wall of the water-passing pipe.

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