In-situ soil solidification method, system

Abstract

The present disclosure provides a soil in-situ solidification method and system, wherein the soil in-situ solidification method comprises: obtaining feeding parameters of each material silo to be fed; wherein the feeding parameters at least include feeding sequence, feeding duration and feeding amount; and feeding the material silo to be fed to a central mixing barrel according to the feeding parameters. The present disclosure can control the feeding sequence, feeding duration and feeding amount of each material silo to the central mixing barrel independently and in time-sharing manner, so as to ensure accurate proportioning of multiple solidifying agents, avoid agglomeration and early reaction caused by pre-mixing of materials, improve slurry uniformity, and thus strengthen the final solidification effect.

Description

Technical Field

[0001] This disclosure relates to the field of civil engineering construction technology, and in particular to a method and system for in-situ soil consolidation. Background Technology

[0002] Deep, soft soil layers are widely distributed along the southeastern coast of my country. These soils are characterized by high water content, low strength, and high compressibility, resulting in extremely poor engineering properties and posing significant challenges to the construction of roads, municipal infrastructure, and other projects. Traditional methods for treating silty soil suffer from drawbacks such as high construction costs, long project cycles, and significant risks of secondary pollution. Furthermore, with industrial development, the accumulation of various industrial solid wastes (such as slag, fly ash, carbide slag, and desulfurization gypsum) is increasing daily, consuming substantial land resources and posing environmental hazards. Utilizing these industrial solid wastes to prepare "solid waste-based solidification agents" for treating silty soft soil can achieve "waste-to-waste treatment" and resource recycling, representing a highly promising environmentally friendly technological approach.

[0003] Existing in-situ curing technologies have the following problems: First, multiple curing materials are usually premixed, which can easily lead to material agglomeration and premature reaction, affecting the uniformity of the grout and the final curing effect. Second, it is impossible to adjust the grouting parameters in real time according to the changes in soil hardness. In hard soil layers, this may lead to poor grouting and equipment overload, while in soft soil layers, it may lead to overflow due to excessively fast grouting, resulting in material waste and uneven curing. Third, traditional systems lack real-time monitoring and feedback mechanisms, and the construction quality depends on manual experience, making it difficult to ensure the consistency of the project quality in the treated area. Summary of the Invention

[0004] The technical problem to be solved by this disclosure is to overcome the defects of the prior art, such as uneven solidification and inability to dynamically adjust grouting parameters according to changes in soil properties, and to provide a method and system for in-situ solidification of soil.

[0005] This disclosure solves the above-mentioned technical problems through the following technical solution:

[0006] This disclosure provides a method for in-situ soil consolidation, the method comprising:

[0007] Obtain the feeding parameters for each silo containing materials to be fed;

[0008] The feeding parameters include at least the feeding sequence, feeding duration, and feeding quantity;

[0009] The material to be fed from the silo to the central mixing tank is controlled according to the feeding parameters.

[0010] Preferably, the in-situ soil consolidation method further includes:

[0011] Obtain the slurry dosage and the spatial trajectory of the stirring head;

[0012] When the amount of grout used falls within the preset grout usage range and the spatial trajectory of the mixing head covers the preset design pile diameter range, the in-situ curing is determined to be complete.

[0013] or,

[0014] If the amount of slurry used falls within the preset slurry usage range, but the spatial trajectory of the mixing head does not cover the preset design pile diameter range, then the mixing of the slurry continues.

[0015] or,

[0016] If the spatial trajectory of the mixing head covers the preset design pile diameter range, but the amount of grout used does not fall within the preset grout usage range, then additional grout is added.

[0017] Preferably, the step of obtaining the spatial trajectory of the stirring head includes:

[0018] The planar coordinates of the stirring head are obtained through a GPS / BDS positioning module;

[0019] The verticality and depth of the stirring head are obtained by the gyroscope attitude detection module; wherein, the verticality is used to characterize the direction and attitude of the stirring head, and the depth is used to characterize the vertical distance of the stirring head.

[0020] A three-dimensional spatial trajectory matrix is ​​generated based on the plane coordinates, the verticality, and the depth to determine the spatial trajectory of the stirring head.

[0021] Preferably, the preset slurry dosage range is determined by the following formula:

[0022] V_theory = π × (D / 2)² × H × ρ × α × (1 + β);

[0023] Among them, V_theory is used to characterize the theoretical grout dosage, D is used to characterize the pile diameter, H is used to characterize the depth, ρ is used to characterize the soil density, α is used to characterize the curing agent dosage, and β is used to characterize the grout water-cement ratio.

[0024] The range of 95% to 105% of the V-theory is set as the preset range for slurry dosage.

[0025] Preferably, the in-situ soil consolidation method further includes:

[0026] Obtain real-time stirring resistance;

[0027] Adjust the grouting speed according to the real-time stirring resistance;

[0028] Mix the grout according to the adjusted grouting speed.

[0029] Preferably, the step of obtaining the real-time stirring resistance includes:

[0030] Real-time mixing resistance is obtained using soil property sensors;

[0031] The soil property sensor includes at least one of a current sensor, a torque sensor, an earth pressure sensor, or a pressure sensor embedded in the soil layer.

[0032] This disclosure also provides a soil in-situ solidification system, the soil in-situ solidification system comprising:

[0033] The acquisition module is used to acquire the feeding parameters for each silo containing materials to be fed.

[0034] The feeding parameters include at least the feeding sequence, feeding duration, and feeding quantity;

[0035] The feeding module is used to control the feeding of the material to be fed from the silo to the central mixing tank according to the feeding parameters.

[0036] This disclosure also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and used to run on the processor, wherein the processor executes the computer program to implement the above-described in-situ soil solidification method.

[0037] This disclosure also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described in-situ soil solidification method.

[0038] This disclosure also provides a computer program product, including a computer program that, when executed by a processor, implements the soil in-situ solidification method as described above.

[0039] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this disclosure.

[0040] The positive and progressive effects of this disclosure are as follows:

[0041] This disclosure enables time-sharing and independent control of the feeding sequence, feeding time, and feeding amount of each material silo to the central mixing tank, ensuring precise proportions of various curing agents, avoiding agglomeration and premature reaction caused by material premixing, improving slurry uniformity, and thus enhancing the final curing effect. Attached Figure Description

[0042] Figure 1 A flowchart of an in-situ soil consolidation method provided as an exemplary embodiment of this disclosure;

[0043] Figure 2 A schematic diagram of a soil in-situ solidification system provided as an exemplary embodiment of this disclosure;

[0044] Figure 3 This is a schematic diagram of the structure of an electronic device provided as an exemplary embodiment of the present disclosure. Detailed Implementation

[0045] The present disclosure is further illustrated below by way of embodiments, but the present disclosure is not limited to the scope of the embodiments described herein.

[0046] Example 1

[0047] Figure 1 A flowchart of an in-situ soil consolidation method provided as an exemplary embodiment of this disclosure is shown below. Figure 1 As shown, in-situ soil consolidation methods include:

[0048] S1. Obtain the feeding parameters for each material silo to be fed.

[0049] The feeding parameters include at least the feeding sequence, feeding time, and feeding quantity. For example, the feeding time can be set between 30 and 60 seconds.

[0050] S2. Control the feeding parameters to feed the material from the silo to the central mixing tank.

[0051] Different silos containing different materials to be fed contain different solidification materials (such as slag, fly ash, carbide slag, and desulfurization gypsum). Each silo is equipped with an independent discharge control valve, and the solidification material is conveyed from the silo to the central mixing tank.

[0052] The central mixing tank receives solidified materials from different material silos to be fed. The central mixing tank is equipped with a stirrer to prepare a uniformly mixed slurry.

[0053] This embodiment can have four material silos, corresponding to slag, fly ash, carbide slag, and desulfurized gypsum respectively (the volume ratio of each silo is slag: fly ash: carbide slag: desulfurized gypsum = 5:2.5:2:1); or it can have 2-8 independent material silos, suitable for various solid waste-based materials and conventional cement-based materials.

[0054] In this embodiment, by controlling the feeding sequence, feeding time and feeding amount of each material silo to the central mixing tank in a time-separated and independent manner, the precise ratio of various curing agents is ensured, avoiding agglomeration and premature reaction caused by material premixing, improving the uniformity of the slurry, and thus enhancing the final curing effect.

[0055] In an optional implementation, the in-situ soil consolidation method further includes:

[0056] S3. Obtain the slurry dosage and the spatial trajectory of the stirring head.

[0057] Step S3 includes:

[0058] S31. Obtain the planar coordinates of the stirring head through the GPS / BDS positioning module.

[0059] A GPS / BDS positioning module is a hardware device that integrates a chip, circuitry, and an antenna. Its core function is to receive signals from the GPS and BDS satellite systems and calculate information such as latitude, longitude, altitude, speed, and time of its own location.

[0060] S32. Obtain the verticality and depth of the stirring head through the gyroscope attitude detection module.

[0061] A gyroscope attitude detection module (often also called an IMU - Inertial Measurement Unit) is a hardware device that integrates multiple sensors. Its core function is to measure the angular velocity and acceleration of an object in three-dimensional space, and then fuse this data through algorithms to ultimately calculate the object's attitude (i.e., orientation or orientation). It's important to note that an object's attitude is typically described using three angles: Roll: the object's tilt around the front-to-back axis (X-axis); Pitch: the object's head-up or head-down movement around the left-to-right axis (Y-axis); and Yaw: the object's left-to-right turning around the vertical axis (Z-axis).

[0062] Verticality is used to characterize the direction and orientation of the stirring head, while depth is used to characterize the vertical distance of the stirring head.

[0063] S33. Generate a three-dimensional spatial trajectory matrix based on planar coordinates, perpendicularity, and depth to determine the spatial trajectory of the stirring head.

[0064] A three-dimensional trajectory matrix (often called a pose matrix or rigid body transformation matrix) is a special type of 4x4 matrix. Its core function is to simultaneously describe the position and orientation (orientation) of an object at any given moment in three-dimensional space, as well as how these states change over time, i.e., the trajectory.

[0065] In an optional implementation, in-situ curing is determined to be complete when the amount of grout used falls within the preset grout usage range and the spatial trajectory of the mixing head covers the preset design pile diameter range.

[0066] In one optional embodiment, the preset slurry dosage range is determined by the following formula:

[0067] V_theory = π × (D / 2)² × H × ρ × α × (1 + β).

[0068] Among them, V_theory is used to characterize the theoretical grout dosage, D is used to characterize the pile diameter, H is used to characterize the depth, ρ is used to characterize the soil density, α is used to characterize the curing agent dosage, and β is used to characterize the grout water-cement ratio.

[0069] The range of 95% to 105% of the V-theory is set as the preset range for slurry dosage.

[0070] In an optional implementation, in response to the grout volume falling within the preset grout volume range, but the spatial trajectory of the mixing head not covering the preset design pile diameter range, the mixing of the grout continues.

[0071] In an alternative implementation, in response to the mixing head spatial trajectory covering the preset design pile diameter range, but the grout usage does not fall within the preset grout usage range, the mixing grout is replenished.

[0072] In this embodiment, the in-situ soil solidification is determined intelligently, automatically, and precisely by using two parameters: slurry dosage and the spatial trajectory of the mixing head. This achieves intelligent and adaptive construction, reduces manual intervention, and improves construction efficiency.

[0073] In an optional implementation, the completion status of in-situ soil solidification can be determined by comprehensively considering multiple parameters such as geometric parameters, grout consumption, construction time, and resistance characteristics. Furthermore, a triple verification mechanism combining GPS / BDS positioning, gyroscope attitude detection, and flow meter integral calculation can be used to accurately identify the completion status of the site.

[0074] In an optional implementation, the in-situ soil consolidation method further includes:

[0075] S4. Obtain real-time stirring resistance.

[0076] In an optional implementation, step S4 includes:

[0077] S41. Obtain real-time mixing resistance through soil property sensors.

[0078] Among them, the soil property sensor includes at least one of a current sensor, a torque sensor, an earth pressure sensor, or a pressure sensor embedded in the soil layer.

[0079] For example, the soil property sensor can be a drive motor current sensor or a mixing shaft torque sensor, with the torque sensor having a range of 0~50 kN·m and an accuracy of ±0.5%.

[0080] S5. Adjust the grouting speed according to the real-time mixing resistance.

[0081] For example, the grouting speed can be adjusted between 0.1 and 2.0 m³ / min; or the grout pump power can be adjusted using a PID algorithm (proportional-integral-derivative control algorithm) based on the difference between the real-time stirring resistance and the preset threshold (the preset threshold can be set to torque 10~30kN·m); or a fuzzy control algorithm can be used, with fine-tuning when the resistance deviation is within ±5kN·m and rapid response when it exceeds ±10kN·m.

[0082] S6. Stir the grout according to the adjusted grouting speed.

[0083] In this embodiment, the dynamic changes in soil properties are sensed in real time by measuring the mixing resistance, and parameters such as grouting speed are dynamically adjusted according to the changes in soil properties, thereby achieving a construction effect that is adapted to local conditions and improving construction efficiency.

[0084] The following example illustrates the in-situ soil solidification method of this embodiment. This example utilizes the following apparatus for in-situ soil solidification: a power and mobility system, a high-powered mixing head, a multi-silo feeding system, a central mixing tank, a slurry pump and delivery pipe, soil property sensors, and an intelligent control system.

[0085] The system includes: a power and mobility system (such as a tracked excavator) to provide power and displacement for the entire system; a high-power mixing head installed at the front of the power equipment for in-situ mixing of soil and slurry; a multi-silo feeding system containing multiple independent material silos, each containing different solidification materials (slag, fly ash, carbide slag, desulfurized gypsum), each silo equipped with an independent discharge control valve; a central mixing tank receiving materials from each silo and equipped with a mixer for preparing a uniformly mixed slurry; a slurry pump and delivery pipe: the slurry pump delivers the mixed slurry from the central mixing tank to the high-power mixing head through a single delivery pipe; a soil property sensor integrated at the front or side of the high-power mixing head to sense mixing resistance in real time; and an intelligent control system, the core control unit connected to the discharge valves of each silo, the slurry pump, and the soil property sensor.

[0086] The detailed configuration of this example device is as follows: I. Power and Mobility System: A 20-ton tracked excavator is used as the main unit, equipped with a hydraulic power system providing an output power of no less than 150 kW. II. High-Power Mixing Head: A three-axis mixing head is used, with a mixing diameter of 0.5 m, a blade spacing of 0.4 m, and a maximum mixing depth of 15 m. III. Multi-Silo Feeding System: Four independent silos are set up, with a total capacity of 8 m³ (2 m³ per silo), made of stainless steel. Silo A: Stores slag (specific surface area > 400 m² / kg² / kg); Silo B: Stores fly ash (Grade II ash); Silo C: Stores calcium carbide slag (effective CaO content > 60%); Silo D: Stores desulfurized gypsum (CaSO₄·2H₂O content > 85%). In addition, each silo is equipped with a variable frequency screw conveyor at the bottom, with a feeding accuracy of ±2%. IV. Central Mixing Tank: 1.5m³ capacity, equipped with a twin-shaft forced mixer, mixing speed 45 rpm, mixing time controlled at 3-5 minutes. V. Soil Property Sensor: Employs a mixing shaft torque sensor, measuring range 0-50 kN·m, sampling frequency 10 Hz, to monitor changes in mixing resistance in real time. VI. Intelligent Control System: Uses a Siemens S7-1200 series PLC (Programmable Logic Controller), equipped with a 10-inch touchscreen human-machine interface.

[0087] The preset solidification material ratio is slag: fly ash: carbide slag: desulfurized gypsum = 5:2.5:2:0.5. The stirring head resistance threshold is set as follows: soft soil <15kN·m, ordinary soil 15~25kN·m, hard soil >25kN·m.

[0088] The power equipment integrates a GPS / BDS positioning module and a gyroscope attitude detection module to achieve three-dimensional spatial positioning and attitude angle monitoring of the stirring head.

[0089] The specific construction process in this example includes:

[0090] Step 1: Slurry preparation (timed feeding)

[0091] After the system is started, add 0.8 m³ of bottom water to the central mixing tank and control the water-cement ratio at 0.6~1.2.

[0092] The intelligent control system opens the silos according to the following timing sequence:

[0093] 0-30 seconds: Open the calcium carbide slag bin and add 200 kg;

[0094] 30-90s: Open the slag bin and add 500kg;

[0095] 90-150s: Open the fly ash silo and add 250kg;

[0096] 150-210s: Open the desulfurization gypsum silo and add 50kg;

[0097] During each feeding interval, the mixing head continues to work, and a uniform slurry is formed after 210 seconds, with a slurry density of 1.5-2.0 g / cm³.

[0098] Step 2: Adaptive grouting

[0099] Start the grout pump, and set the initial grouting rate to 0.8 m³ / min.

[0100] During the descent of the stirring head, the torque sensor monitors the resistance in real time.

[0101] When the torque is greater than 25 kN·m (hard soil layer), the control system reduces the grout pump power to 60% and the grouting speed to 0.5 m³ / min.

[0102] When the torque is less than 15 kN·m (soft soil layer), the control system increases the grout pump power to 120% and the grouting speed to 1.0 m³ / min.

[0103] When the torque is between 15-25 kN·m, maintain the initial grouting speed.

[0104] This adjustment process uses a PID control algorithm with a response time of less than 2 seconds.

[0105] Then, it is cured through a compaction grouting process.

[0106] Raw material sources: slag, steel slag (steel plant), calcium carbide slag (calcium carbide plant), fly ash (coal-fired power plant), coal gangue (coal washing plant).

[0107] Preparation process: Mix in a ratio of 60:20:20, add 0.5% organosilicon waterproofing agent, and inject the grout into the formation through pre-set boreholes using a pressure machine to fill voids and compact the soil.

[0108] The innovative aspects of the compaction grouting process include: simple and flexible construction, no dust or noise during construction, environmentally friendly and pollution-free; adaptability to complex strata, wide range of applications (such as foundation reinforcement, underground seepage prevention, foundation pit support, etc.); excellent mechanical properties after construction, stable quality, forming a continuous integral structure after curing, strong impermeability, and small settlement in the later stage (far lower than cement-based materials under the same conditions).

[0109] Performance testing: The average resistance between the 7-layer and 1-layer cones is greater than 1.0 MPa and the bearing capacity of the foundation is greater than 100 kPa; the resistance between the 28-layer and 1-layer cones is greater than 2.5 MPa and the bearing capacity of the foundation is greater than 220 kPa.

[0110] Comparative experiment: Cement-based materials using the same compaction grouting method under the same conditions had a cone resistance of only 0.8 MPa and a foundation bearing capacity of 90 kPa after 28 days.

[0111] Step 3: Intelligent identification and cyclic control of points are completed.

[0112] The principle for determining the completion status of a construction site includes: The intelligent control system automatically identifies the completion status of a single construction site through the following three criteria:

[0113] Criterion 1: Theoretical slurry usage achievement rate (weight 40%).

[0114] The system automatically calculates the theoretical grout usage per point based on preset treatment parameters (treatment depth H=5m, pile diameter D=0.5m, soil density ρ=1.8t / m³, curing agent dosage α=10%, grout water-cement ratio β=0.8).

[0115] V_theory = π×(D / 2)²×H×ρ×α×(1+β);

[0116] The calculated V_theoretical is approximately 1.4 m³. This criterion is satisfied when the cumulative injection volume of the flow meter reaches 95%-105% of V_theoretical (i.e., 1.33-1.47 m³).

[0117] Criterion 2: Integrity of the spatial trajectory of the stirring head (weight 40%).

[0118] The system obtains the plane coordinates (X,Y) of the mixing head in real time through the GPS / BDS positioning module integrated in the power equipment, and obtains the verticality and depth (Z) of the mixing head through the gyroscope attitude detection module. The system generates a three-dimensional spatial trajectory matrix. When the trajectory coverage reaches more than 98% of the designed pile diameter range, and the mixing head completes the standard process of "sinking → lifting → re-mixing", the criterion is met.

[0119] Criterion 3: Stability of resistance characteristics (weight 20%). In the later stage of grouting (the last 30 seconds), the torque sensor monitoring value is stable within ±10% of the preset threshold, and the fluctuation frequency is <0.5 Hz, indicating that the grout has fully diffused and the soil resistance tends to stabilize. This criterion is met.

[0120] Comprehensive judgment logic:

[0121] When both criteria one and criteria two are met (i.e., "sufficient grout volume" and "complete spatial coverage"), the system determines that the construction at that point is complete, regardless of the status of criterion three.

[0122] If criterion 1 is met but criterion 2 is not met (e.g., the stirring head is stuck, causing the trajectory to be missing), the system will issue an early warning and extend the re-stirring time until criterion 2 is met.

[0123] If criterion 2 is met but criterion 1 is not met (e.g., grout leakage), the system determines that the process is incomplete and automatically triggers the grout replenishment procedure.

[0124] If the system determines that the grouting point has not been completed, it will start the automatic grouting cycle:

[0125] Scenario A: Insufficient slurry (Criterion 1 not met)

[0126] The system activates the rapid slurry replenishment mode, skipping the water-cement ratio adjustment and directly preparing 0.3 m³ of replenishment slurry according to the original ratio.

[0127] The mixing head injects supplementary slurry at a low speed (0.3 m³ / min) in situ until criterion one is met.

[0128] Scenario B: Insufficient mixing uniformity (Criterion 2 not met)

[0129] The stirring head performs a local re-stirring procedure, stirring up and down 3-5 times in the defective area (where the trajectory coverage is <98%).

[0130] If criterion two is still not met after re-stirring, the system determines it to be a mechanical fault and will shut down and alarm.

[0131] When the system completes the location determination:

[0132] Automatic recording: The completed data (coordinates, depth, grout usage, average torque, construction time) of this point is stored in the database to generate a construction log.

[0133] Automatic prompt: A "Point completed" prompt will pop up on the touch screen, and a voice announcement will say "Construction at the current point is complete. Please move to the next point."

[0134] Continuous operation: After the operator moves the equipment to the next predetermined pile position (GPS coordinates have been pre-stored), the system automatically loads the new point parameters through location recognition and starts a new round of construction cycle with one click.

[0135] Step 4: Maintenance.

[0136] After construction is completed, the solidified area is covered with geotextile and watered for 7-14 days for curing.

[0137] Experimental data verification:

[0138] In a soft soil foundation treatment project for a road engineering project, the above technical solution was used to treat silty soil (initial water content 55%-65%, bearing capacity 40-60kPa), with a treatment depth of 5m and a solidifying agent dosage of 15% (percentage of wet soil mass).

[0139] Treatment effect detection:

[0140] Uniformity: Core samples taken at 28 days of age showed an average unconfined compressive strength of 1.12 MPa, a standard deviation of 0.13 MPa, and a coefficient of variation of 11.6%, which was significantly better than the traditional method (coefficient of variation 22.3%).

[0141] Strength: 14.3% higher than that of pure cement-stabilized soil with the same admixture (strength 0.98 MPa);

[0142] Environmental benefits: Reduces cement usage by 60% and CO2 emissions by approximately 42%;

[0143] Economic benefits: Overall costs are reduced by 25.7%, and the construction period is shortened by 18%.

[0144] Grouting speed adaptive effect:

[0145] In soft soil layers, the average torque is 12 kN·m, and the grouting speed is automatically increased to 1.0 m³ / min, improving construction efficiency by 25%.

[0146] In hard soil layers, the average torque is 28 kN·m, the grouting speed automatically drops to 0.5 m³ / min, and the equipment failure rate is zero.

[0147] The positive improvements of this example include: 1. Precise proportioning and uniform mixing, solving the problem of inaccurate proportioning and uneven mixing of multi-component solid waste-based solidifying agents: By feeding materials into the central mixing tank in a timed and orderly manner, precise proportioning of various solid waste-based materials is achieved, avoiding material agglomeration or premature hydration reactions caused by premixing. The uniformity of the slurry is improved by more than 30%, and the standard deviation of the solidified soil strength is reduced to within 15%. 2. Intelligent and adaptive construction, solving the problem of not being able to dynamically adjust grouting parameters according to changes in soil properties during construction: By using sensors to sense soil resistance in real time and dynamically adjust the grouting speed, a "monitoring-feedback-control" closed loop is formed, enabling construction to be "tailored to local conditions." Field tests show that in hard soil layers (torque > 25 kN·m), the grouting speed is automatically reduced by 30%-50%, effectively avoiding equipment overload; in soft soil layers (torque < 15 kN·m), the grouting speed is increased by 20%-40%, improving construction efficiency by 15%-20%. III. High degree of automation in the construction process: A point-based intelligent identification system enables "one-click" continuous operation, reducing manual intervention, increasing construction efficiency by 25%, and reducing operators by 40%. IV. Improved homogeneity, reliability, and economy of the solidification treatment effect, resulting in a superior solidification effect compared to traditional cement: Using a solid waste-based solidifying agent (slag: fly ash: carbide slag: desulfurized gypsum = 4:3:1:1) to treat silty soil, the 28-day unconfined compressive strength can reach 0.8-1.5 MPa, which is 10%-15% higher than that of pure cement solidified soil with the same admixture, while reducing CO2 emissions by approximately 40%. V. Achieves resource utilization of industrial solid waste, reduces traditional cement usage, and achieves high utilization rate of solidification materials, making it economical and environmentally friendly: The intelligent grouting system avoids material waste, increasing material utilization to over 95%; combined with the use of industrial solid waste, it achieves resource recycling, reducing overall costs by 20%-30% compared to traditional cement-based solidification. VI. Good uniformity of construction quality: Through closed-loop control, the coefficient of variation of solidified soil strength in the entire treatment area is controlled within 12%, which is significantly better than the 20%-25% of traditional methods.

[0148] Example 2

[0149] Corresponding to the aforementioned embodiments of in-situ soil consolidation methods, this disclosure also provides embodiments of in-situ soil consolidation systems.

[0150] Figure 2 This is a schematic diagram of a soil in-situ solidification system provided as an exemplary embodiment of the present disclosure. The soil in-situ solidification system includes:

[0151] Module 1 is used to obtain the feeding parameters for each material silo to be fed.

[0152] Among them, the feeding parameters include at least the feeding sequence, feeding time and feeding amount.

[0153] Feeding module 2 is used to control the feeding of materials from the silo to the central mixing tank according to the feeding parameters.

[0154] In an optional implementation, the acquisition module 1 is also used to acquire the slurry dosage and the spatial trajectory of the stirring head.

[0155] See Figure 2 The in-situ soil consolidation system also includes:

[0156] Module 3 is used to determine that in-situ curing is complete when the amount of grout falls within the preset grout amount range and the spatial trajectory of the mixing head covers the preset design pile diameter range.

[0157] In an optional implementation, the determining module 3 is further configured to continue mixing the grout in response to the grout volume falling within the preset grout volume range, but the spatial trajectory of the mixing head not covering the preset design pile diameter range.

[0158] In an optional implementation, the determining module 3 is further configured to supplement the mixing slurry in response to the mixing head spatial trajectory covering the preset design pile diameter range, but the slurry dosage not falling within the preset slurry dosage range.

[0159] In an optional implementation, the acquisition module 1 is further configured to acquire the planar coordinates of the stirring head via a GPS / BDS positioning module; and to acquire the verticality and depth of the stirring head via a gyroscope attitude detection module; wherein, the verticality is used to characterize the direction and attitude of the stirring head, and the depth is used to characterize the vertical distance of the stirring head.

[0160] Module 3 is also used to generate a three-dimensional spatial trajectory matrix based on planar coordinates, verticality, and depth to determine the spatial trajectory of the stirring head.

[0161] In an optional implementation, the determining module 3 is further configured to determine via the following formula:

[0162] V_theory = π × (D / 2)² × H × ρ × α × (1 + β);

[0163] Among them, V_theory is used to characterize the theoretical grout dosage, D is used to characterize the pile diameter, H is used to characterize the depth, ρ is used to characterize the soil density, α is used to characterize the curing agent dosage, and β is used to characterize the grout water-cement ratio.

[0164] Module 3 is also used to determine 95%~105% of the V_theory as the preset slurry dosage range.

[0165] In an optional implementation, the acquisition module 1 is also used to acquire real-time stirring resistance.

[0166] See Figure 2 The in-situ soil consolidation system also includes:

[0167] Adjustment module 4 is used to adjust the grouting speed according to the real-time stirring resistance.

[0168] Module 3 is used to stir and mix the grout according to the adjusted grouting speed.

[0169] In an optional implementation, the acquisition module 1 is further configured to acquire real-time mixing resistance via a soil property sensor.

[0170] Among them, the soil property sensor includes at least one of a current sensor, a torque sensor, an earth pressure sensor, or a pressure sensor embedded in the soil layer.

[0171] For the system embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The system embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this disclosure according to actual needs.

[0172] Example 3

[0173] Figure 3 This is a schematic diagram of the structure of an electronic device according to an example embodiment of the present disclosure. The electronic device includes a memory, a processor, and a computer program stored in the memory and used to run on the processor. When the processor executes the computer program, it implements the soil in-situ solidification method of any of the above embodiments. Figure 3 The electronic device 90 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments disclosed herein.

[0174] like Figure 3 As shown, the electronic device 90 can be manifested as a general-purpose computing device, such as a server device. The components of the electronic device 90 may include, but are not limited to: at least one processor 91, at least one memory 92, and a bus 93 connecting different system components (including memory 92 and processor 91).

[0175] Bus 93 includes a data bus, an address bus, and a control bus.

[0176] The memory 92 may include volatile memory, such as random access memory (RAM) 921 and / or cache memory 922, and may further include read-only memory (ROM) 923.

[0177] The memory 92 may also include a program tool 925 (or utility) having a set (at least one) program module 924, such program module 924 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0178] The processor 91 executes various functional applications and data processing by running computer programs stored in the memory 92, such as the soil in-situ solidification method provided in any of the above embodiments.

[0179] Electronic device 90 can also communicate with one or more external devices 94 (e.g., keyboard, pointing device, etc.). This communication can be performed through input / output (I / O) interface 95. Furthermore, electronic device 90 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public network, such as the Internet) via network adapter 96. As shown, network adapter 96 communicates with other modules of electronic device 90 via bus 93. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with electronic device 90, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0180] It should be noted that although several units / modules or sub-units / modules of the electronic device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0181] Example 4

[0182] This disclosure also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the soil in-situ solidification method provided in any of the above embodiments.

[0183] The readable storage medium may be more specifically adopted, including but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device, or any suitable combination thereof.

[0184] Example 5

[0185] This disclosure also provides a computer program product, including a computer program that, when executed by a processor, implements the soil in-situ solidification method described above.

[0186] The program code for executing the computer program product disclosed herein can be written in any combination of one or more programming languages. The program code can be executed entirely on a user device, partially on a user device, as a stand-alone software package, partially on a user device and partially on a remote device, or entirely on a remote device.

[0187] While specific embodiments of this disclosure have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this disclosure, but all such changes and modifications fall within the scope of protection of this disclosure.

Claims

1. A method for in-situ soil consolidation, characterized in that, The in-situ soil consolidation method includes: Obtain the feeding parameters for each silo containing materials to be fed; The feeding parameters include at least the feeding sequence, feeding duration, and feeding quantity; The material to be fed from the silo to the central mixing tank is controlled according to the feeding parameters.

2. The soil in-situ consolidation method as described in claim 1, characterized in that, The in-situ soil consolidation method further includes: Obtain the slurry dosage and the spatial trajectory of the stirring head; When the amount of grout used falls within the preset grout usage range and the spatial trajectory of the mixing head covers the preset design pile diameter range, the in-situ curing is determined to be complete. or, If the amount of slurry used falls within the preset slurry usage range, but the spatial trajectory of the mixing head does not cover the preset design pile diameter range, then the mixing of the slurry continues. or, If the spatial trajectory of the mixing head covers the preset design pile diameter range, but the amount of grout used does not fall within the preset grout usage range, then additional grout is added.

3. The in-situ soil consolidation method as described in claim 2, characterized in that, The steps to obtain the spatial trajectory of the stirring head include: The planar coordinates of the stirring head are obtained using a GPS / BDS positioning module; The verticality and depth of the stirring head are obtained by the gyroscope attitude detection module; wherein, the verticality is used to characterize the direction and attitude of the stirring head, and the depth is used to characterize the vertical distance of the stirring head. A three-dimensional spatial trajectory matrix is ​​generated based on the plane coordinates, the verticality, and the depth to determine the spatial trajectory of the stirring head.

4. The in-situ soil consolidation method as described in claim 2, characterized in that, The preset slurry dosage range is determined by the following formula: V_theory = π × (D / 2)² × H × ρ × α × (1 + β); Among them, V_theory is used to characterize the theoretical grout dosage, D is used to characterize the pile diameter, H is used to characterize the depth, ρ is used to characterize the soil density, α is used to characterize the curing agent dosage, and β is used to characterize the grout water-cement ratio. The range of 95% to 105% of the V-theory is set as the preset range for slurry dosage.

5. The in-situ soil consolidation method as described in claim 1, characterized in that, The in-situ soil consolidation method further includes: Obtain real-time stirring resistance; Adjust the grouting speed according to the real-time stirring resistance; Mix the grout according to the adjusted grouting speed.

6. The in-situ soil consolidation method as described in claim 5, characterized in that, The step of obtaining real-time stirring resistance includes: Real-time mixing resistance is obtained using soil property sensors; The soil property sensor includes at least one of a current sensor, a torque sensor, an earth pressure sensor, or a pressure sensor embedded in the soil layer.

7. A soil in-situ consolidation system, characterized in that, The in-situ soil consolidation system includes: The acquisition module is used to acquire the feeding parameters for each silo containing materials to be fed. The feeding parameters include at least the feeding sequence, feeding duration, and feeding quantity; The feeding module is used to control the feeding of the material to be fed from the silo to the central mixing tank according to the feeding parameters.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and for running on the processor, characterized in that, When the processor executes the computer program, it implements the soil in-situ solidification method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the soil in-situ solidification method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the soil in-situ solidification method as described in any one of claims 1-6.

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