Soft foundation treatment method under reinforced flow-state muddy soft soil condition

Abstract

The invention discloses a soft foundation treatment method under the condition of reinforced flow-state muddy soft soil. According to the intelligent soft foundation treatment method, an intelligent monitoring and control system is introduced, the whole soft foundation treatment method achieves accurate monitoring and automatic adjustment of the construction process, and remarkable beneficial effects are achieved. Firstly, key parameters such as pore water pressure, soil deformation and underground water level are monitored in real time, so that engineers can quickly respond to changes of soil properties and timely adjust preloading load and vacuum degree, construction efficiency is optimized, and unnecessary construction period delay is reduced. And secondly, due to automatic data acquisition and processing, the accuracy and speed of data processing are greatly improved, personal errors are reduced, and the construction quality is ensured. In addition, the intelligent system can give out early warning in time when potential risks are found, construction safety is guaranteed, and the possibility of accidents is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of soft foundation treatment, and in particular relates to a soft foundation treatment method under reinforced fluidized silty soft soil conditions. Background Art

[0002] Soft foundation treatment is an engineering technology for soft foundations, which aims to improve the bearing capacity and stability of the foundation to meet the needs of engineering construction. Soft foundations usually refer to soils with low natural bearing capacity, high compressibility and large deformation, such as silt, silt, expansive soil, etc. In current civil engineering practice, especially when facing the challenge of soft foundation treatment under reinforced fluid silty soft soil conditions, technical difficulties and limitations are particularly prominent. Traditional soft foundation treatment technologies include but are not limited to preloading drainage consolidation, deep mixing, CFG piles, gravel piles, etc.

[0003] However, these methods still face the following limitations and problems in practical applications: Environmental impact: During the construction process, chemical materials that are harmful to the environment may be used, or the construction activities themselves may cause damage to the surrounding ecological environment, which is inconsistent with the concept of sustainable development. Existing monitoring methods often rely on static and intermittent data collection, lacking real-time and continuity, making it difficult to accurately control and adjust the soft foundation treatment process. Summary of the invention

[0004] The purpose of the present invention is to provide a reinforced soft foundation treatment method under fluidized silty soft soil conditions in order to solve the above-mentioned problems.

[0005] The technical solution adopted by the present invention is as follows: a method for treating soft foundation under reinforced fluid muddy soft soil conditions, characterized in that the method comprises the following steps:

[0006] S1: Conduct detailed geological survey of the soft soil layer to understand its distribution range, thickness, and physical and mechanical properties, and provide a basis for subsequent treatment plans;

[0007] S2: Determine the ultimate goal of soft foundation treatment according to project requirements, including bearing capacity, settlement, and stability;

[0008] S3: According to the geological survey results and treatment objectives, a variety of soft foundation treatment methods are selected, including pre-pressure drainage consolidation, deep mixing, CFG piles, and gravel piles;

[0009] S4: Taking into account the project cost, construction period and environmental impact factors, the treatment scheme of pre-pressing drainage consolidation combined with deep mixing was determined;

[0010] S5: Complete the construction drawing design, formulate the construction organization plan, and prepare the materials, equipment and personnel required for construction;

[0011] S6: Use environmentally friendly drainage materials to ensure that the impact on the environment is reduced while accelerating the consolidation of soft soil layers. Develop an intelligent monitoring and control system to monitor pore water pressure, soil deformation and groundwater level parameters in real time, and automatically adjust the preload and vacuum degree according to the monitoring data to achieve dynamic optimization control;

[0012] S7: On the basis of pre-compression drainage consolidation, the deep mixing method is used to reinforce the soft soil layer to improve the soil strength;

[0013] S8: During the construction process, the settlement, pore water pressure and soil strength parameters of the soft soil layer are monitored in real time, and the construction parameters are adjusted according to the monitoring data;

[0014] S9: Strictly control the construction quality to ensure that the effects of preloading, drainage, consolidation and deep mixing meet the design requirements;

[0015] S10: After the construction is completed, the settlement of the soft foundation is observed for a period of time to evaluate whether the treatment effect meets the design requirements;

[0016] S11: Based on the settlement observation results and treatment effect evaluation, organize relevant departments to conduct project acceptance to ensure that the soft foundation treatment achieves the expected goals.

[0017] In a preferred embodiment, in step S1, the arrangement density of the drilling points is one point per 20-50 square meters, the drilling depth must be at least 5 meters below the bottom of the soft soil layer, and a soil sample is taken every 1-2 meters; the laboratory test will include the physical properties of the soil including specific gravity, moisture content, particle size distribution and mechanical properties including shear strength and compression modulus.

[0018] In a preferred embodiment, in step S2, the design bearing capacity is 80-150 kPa, the maximum allowable settlement does not exceed 50 mm, and the stability safety factor is greater than 1.5; these goals will serve as the basis for subsequent treatment plan design and construction quality control.

[0019] In a preferred embodiment, in step S3, a plurality of methods including pre-pressing drainage consolidation, deep mixing, CFG piles and gravel piles are compared; and the method that best suits the engineering requirements is selected through comprehensive evaluation.

[0020] In a preferred embodiment, in step S4, a treatment scheme of preloading drainage consolidation combined with deep mixing is adopted; the preloading load is 50-100 kPa, the preloading time is 6-12 months, the depth of deep mixing is 8-15 meters, and the spacing of the mixing piles is 1-2 meters;

[0021] In step S5, the scale of the construction drawing is 1:100 or 1:200.

[0022] In a preferred embodiment, in step S6, the intelligent monitoring and control system is internally provided with: a sensor network, a data acquisition and transmission device, a central processing unit, an actuator, a user interface, and a safety and early warning system;

[0023] The sensor network includes: pore water pressure sensor: used to monitor the changes in pore water pressure inside the soft soil layer; soil displacement sensor: including surface displacement sensor and deep displacement sensor, used to monitor the horizontal and vertical displacement of the soil; groundwater level sensor: real-time monitoring of groundwater level changes; temperature sensor: monitoring the impact of ambient temperature on soft soil treatment; strain sensor: measuring the strain of the soil and evaluating its stability;

[0024] The data collection and transmission device includes: data collection unit: responsible for collecting data from the sensor network and performing preliminary processing; wireless transmission module: sending the collected data to the central processing unit via wireless signals; wired transmission system: in the case of unstable wireless signals, using wired methods to ensure stable data transmission;

[0025] The central processing unit includes data processing and analysis software: it processes and analyzes the collected data and generates charts and reports;

[0026] The actuators include: vacuum pump control system: adjusts the working state of the vacuum pump according to the instructions of the CPU to control the vacuum degree; preload adjustment device: adjusts the size of the preload to adapt to the consolidation of the soil;

[0027] The user interface includes: Monitoring center: operators can view monitoring data and system status in real time through the large screen of the monitoring center; Remote access interface: allows authorized users to remotely access the system through the Internet to perform monitoring and control operations;

[0028] The security and early warning system includes: data encryption: ensuring the security of data transmission; early warning mechanism: when abnormal data is detected, the system automatically issues an early warning to notify management personnel to take corresponding measures.

[0029] In a preferred embodiment, in step S6, an environmentally friendly drainage material is used to produce a degradable drainage board for soft foundation treatment engineering, and the formula of the environmentally friendly drainage material includes:

[0030] Biodegradable resin: 50-60 parts by weight; in step S7, the diameter of the stirring head is 500-700 mm, the stirring speed is 30-60 rpm, and the injection rate of the curing agent is 50-100 liters per meter.

[0031] Reinforcement filler: 20-30 parts by weight;

[0032] Plasticizer: 5-10 parts by weight;

[0033] Antioxidant: 0.5-1 parts by weight;

[0034] Light stabilizer: 0.5-1 parts by weight;

[0035] Cross-linking agent: 1-2 parts by weight;

[0036] Lubricant: 0.5-1 parts by weight.

[0037] In a preferred embodiment, in step S8, the monitoring points are arranged at one monitoring point every 20 square meters, the monitoring frequency is daily or weekly, the sedimentation rate threshold does not exceed 2 mm / day, and the pore water pressure threshold does not exceed 50 kPa.

[0038] In a preferred embodiment, in step S9, the quality standards of pre-pressure drainage consolidation and deep mixing include the installation deviation of the drainage board not exceeding 10 mm, the mixing uniformity of the mixing pile, the quality inspection frequency such as inspection every 100 square meters or every 10% of the project volume, and the treatment measures for unqualified products such as re-construction or reinforcement treatment;

[0039] In step S10, the observation period may be 3-6 months, the number of observation points may be no less than 10 points, the settlement data recording frequency may be at least once a week, and the settlement stability standard may be that the settlement does not exceed 5 mm for three consecutive months.

[0040] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0041] 1. In the present invention, by introducing an intelligent monitoring and control system, the entire soft foundation treatment method realizes accurate monitoring and automatic adjustment of the construction process, bringing significant beneficial effects. First, real-time monitoring of key parameters such as pore water pressure, soil deformation and groundwater level enables engineering personnel to respond quickly to changes in soil properties and adjust preload and vacuum degree in time, thereby optimizing construction efficiency and reducing unnecessary construction delays. Secondly, automated data acquisition and processing greatly improves the accuracy and speed of data processing, reduces human errors, and ensures construction quality. In addition, this intelligent system can also issue early warnings in a timely manner when potential risks are discovered, ensuring construction safety and reducing the possibility of accidents.

[0042] 2. In the present invention, environmentally friendly drainage materials, such as degradable plastic drainage boards or bio-based drainage sand wells, are used to bring environmentally friendly improvements to the soft foundation treatment method. The use of such materials can naturally degrade after the completion of the project, reducing long-term pollution to the soil and groundwater and protecting the ecological environment. At the same time, the use of environmentally friendly materials also improves the sustainability of engineering projects, meeting the current social requirements for green buildings and environmental protection. In addition, the degradability of such materials also reduces the cost of material removal and disposal after the completion of the project, reduces the life cycle cost of the entire project, and achieves a win-win situation in economic and environmental benefits. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] Embodiment 1:

[0045] A method for treating soft foundation under reinforced fluidized muddy soft soil conditions, the method comprising the following steps:

[0046] S1: Conduct detailed geological survey of the soft soil layer to understand its distribution range, thickness, and physical and mechanical properties, and provide a basis for subsequent treatment plans;

[0047] S2: Determine the ultimate goal of soft foundation treatment according to project requirements, including bearing capacity, settlement, and stability;

[0048] S3: According to the geological survey results and treatment objectives, select a variety of soft foundation treatment methods, such as pre-pressure drainage consolidation, deep mixing, CFG piles, and gravel piles;

[0049] S4: Taking into account the project cost, construction period and environmental impact factors, the treatment scheme of pre-pressing drainage consolidation combined with deep mixing was determined;

[0050] S5: Complete the construction drawing design, formulate the construction organization plan, and prepare the materials, equipment and personnel required for construction;

[0051] S6: Use environmentally friendly drainage materials to ensure that the impact on the environment is reduced while accelerating the consolidation of soft soil layers. Develop an intelligent monitoring and control system to monitor pore water pressure, soil deformation and groundwater level parameters in real time, and automatically adjust the preload and vacuum degree according to the monitoring data to achieve dynamic optimization control;

[0052] S7: On the basis of pre-compression drainage consolidation, the deep mixing method is used to reinforce the soft soil layer to improve the soil strength;

[0053] S8: During the construction process, the settlement, pore water pressure and soil strength parameters of the soft soil layer are monitored in real time, and the construction parameters are adjusted according to the monitoring data;

[0054] S9: Strictly control the construction quality to ensure that the effects of preloading, drainage, consolidation and deep mixing meet the design requirements;

[0055] S10: After the construction is completed, the settlement of the soft foundation is observed for a period of time to evaluate whether the treatment effect meets the design requirements;

[0056] S11: Organize relevant departments to conduct project acceptance according to the settlement observation results and treatment effect evaluation to ensure that the soft foundation treatment achieves the expected goals;

[0057] In step S1, the arrangement density of the drilling points is one point per 20-50 square meters, the drilling depth must be at least 5 meters below the bottom of the soft soil layer, and a soil sample is taken every 1-2 meters; the laboratory test will include the determination of soil physical properties such as specific gravity, moisture content, particle size distribution and mechanical properties such as shear strength and compression modulus;

[0058] In step S2, the design bearing capacity is 80-150 kPa, the maximum allowable settlement is no more than 50 mm, and the stability safety factor is greater than 1.5; these goals will serve as the basis for the subsequent treatment plan design and construction quality control;

[0059] In step S3, multiple methods such as pre-pressed drainage consolidation, deep mixing, CFG piles, and gravel piles are compared; the applicability of each method, such as the thickness and properties of the soft soil layer, the expected treatment effect, such as consolidation time and reinforcement depth, and economic analysis, such as the treatment cost per unit area, are evaluated; through comprehensive evaluation, the method that best suits the project needs is selected;

[0060] In step S4, a treatment scheme of preloading drainage consolidation combined with deep mixing is adopted; the size of the preloading load is such as 50-100 kPa, the preloading time is such as 6-12 months, the depth of deep mixing is such as 8-15 meters, and the spacing of the mixing piles is such as 1-2 meters;

[0061] In step S5, the scale of the construction drawings is 1:100 or 1:200, the timetable of the construction organization plan is such as the construction period, key nodes, the material list is such as drainage board, curing agent, sand and gravel, the equipment list is such as drilling rig, mixer, vacuum pump, and the personnel configuration is such as engineers, technicians, and construction personnel;

[0062] In step S6, the internal configuration of the intelligent monitoring and control system includes: a sensor network, a data acquisition and transmission device, a central processing unit, an actuator, a user interface, and a safety and early warning system;

[0063] The sensor network includes: pore water pressure sensor: used to monitor the changes in pore water pressure inside the soft soil layer; soil displacement sensor: including surface displacement sensor and deep displacement sensor, used to monitor the horizontal and vertical displacement of the soil; groundwater level sensor: real-time monitoring of groundwater level changes; temperature sensor: monitoring the impact of ambient temperature on soft soil treatment; strain sensor: measuring the strain of the soil and evaluating its stability;

[0064] The data collection and transmission device includes: data collection unit: responsible for collecting data from the sensor network and performing preliminary processing; wireless transmission module: sending the collected data to the central processing unit via wireless signals to reduce the complexity of wiring; wired transmission system (backup): in the case of unstable wireless signals, using wired methods to ensure stable data transmission;

[0065] The central processing unit includes: data processing and analysis software: to process and analyze the collected data, generate charts and reports; control algorithm: based on the monitoring data, automatically adjust the preload and vacuum degree through the preset control algorithm; database management: to store historical data for subsequent analysis and query;

[0066] The actuators include: vacuum pump control system: adjusts the working state of the vacuum pump according to the instructions of the CPU to control the vacuum degree; preload adjustment device: adjusts the size of the preload to adapt to the consolidation of the soil;

[0067] The user interface includes: Monitoring center: operators can view monitoring data and system status in real time through the large screen of the monitoring center; Remote access interface: allows authorized users to remotely access the system through the Internet to perform monitoring and control operations;

[0068] The security and early warning system includes: data encryption: to ensure the security of data transmission; early warning mechanism: when abnormal data is detected, the system automatically issues an early warning to notify management personnel to take corresponding measures;

[0069] In step S6, an environmentally friendly drainage material is used to produce a degradable drainage board for use in a soft foundation treatment project. The formula of the environmentally friendly drainage material includes:

[0070] Biodegradable resin (PBS): 50 parts by weight;

[0071] As a matrix material, PBS has good mechanical properties and biodegradability;

[0072] Reinforcement filler (natural plant fiber): 20 parts by weight;

[0073] Fibers increase the mechanical strength and modulus of the material, but also help increase the degradation rate;

[0074] Plasticizer (ATBC): 5 parts by weight;

[0075] Plasticizers increase the flexibility and processing properties of materials;

[0076] Antioxidant (antioxidant 1010): 0.5 parts by weight;

[0077] Antioxidants prevent oxidative degradation of materials during processing and use;

[0078] Light stabilizer (UV-531): 0.5 parts by weight;

[0079] Light stabilizers prevent materials from degrading under UV exposure;

[0080] Cross-linking agent (melamine formaldehyde resin): 1 part by weight;

[0081] Cross-linking agents improve the heat resistance and mechanical strength of the material;

[0082] Lubricant (calcium stearate): 0.5 parts by weight;

[0083] Lubricants help improve the processing fluidity of materials;

[0084] In step S7, the diameter of the stirring head is 500-700 mm, the stirring speed is 30-60 rpm, the injection rate of the curing agent is 50-100 liters per meter, and the curing agent is mixed with cement in an amount of 10%-20% of the mass of the soft soil;

[0085] In step S8, the monitoring points are arranged as one monitoring point every 20 square meters, the monitoring frequency is daily or weekly, the settlement rate threshold does not exceed 2 mm / day, the pore water pressure threshold does not exceed 50 kPa, and the soil strength standard such as unconfined compressive strength is not less than 50 kPa;

[0086] In step S9, the quality standards of pre-pressing drainage consolidation and deep mixing are as follows: the installation deviation of the drainage board does not exceed 10 mm, the mixing uniformity of the mixing piles, the quality inspection frequency such as inspection every 100 square meters or every 10% of the project volume, and the treatment measures for unqualified products such as re-construction or reinforcement;

[0087] In step S10, the observation period may be 3-6 months, the number of observation points may be no less than 10 points, the settlement data recording frequency may be at least once a week, and the settlement stability standard may be that the settlement does not exceed 5 mm for three consecutive months.

[0088] Embodiment 2:

[0089] A method for treating soft foundation under reinforced fluidized muddy soft soil conditions, the method comprising the following steps:

[0090] S1: Conduct detailed geological survey of the soft soil layer to understand its distribution range, thickness, and physical and mechanical properties, and provide a basis for subsequent treatment plans;

[0091] S2: Determine the ultimate goal of soft foundation treatment according to engineering requirements, including bearing capacity, settlement, and stability;

[0092] S3: According to the geological survey results and treatment objectives, select a variety of soft foundation treatment methods, such as pre-pressure drainage consolidation, deep mixing, CFG piles, and gravel piles;

[0093] S4: Taking into account the project cost, construction period and environmental impact factors, the treatment scheme of pre-pressing drainage consolidation combined with deep mixing was determined;

[0094] S5: Complete the construction drawing design, formulate the construction organization plan, and prepare the materials, equipment and personnel required for construction;

[0095] S6: Use environmentally friendly drainage materials to ensure that the impact on the environment is reduced while accelerating the consolidation of soft soil layers. Develop an intelligent monitoring and control system to monitor pore water pressure, soil deformation and groundwater level parameters in real time, and automatically adjust the preload and vacuum degree according to the monitoring data to achieve dynamic optimization control;

[0096] S7: On the basis of pre-compression drainage consolidation, the deep mixing method is used to reinforce the soft soil layer to improve the soil strength;

[0097] S8: During the construction process, the settlement, pore water pressure and soil strength parameters of the soft soil layer are monitored in real time, and the construction parameters are adjusted according to the monitoring data;

[0098] S9: Strictly control the construction quality to ensure that the effects of preloading, drainage, consolidation and deep mixing meet the design requirements;

[0099] S10: After the construction is completed, the settlement of the soft foundation is observed for a period of time to evaluate whether the treatment effect meets the design requirements;

[0100] S11: Organize relevant departments to conduct project acceptance according to the settlement observation results and treatment effect evaluation to ensure that the soft foundation treatment achieves the expected goals;

[0101] In step S1, the arrangement density of the drilling points is one point per 20-50 square meters, the drilling depth must be at least 5 meters below the bottom of the soft soil layer, and a soil sample is taken every 1-2 meters; the laboratory test will include the determination of soil physical properties such as specific gravity, moisture content, particle size distribution and mechanical properties such as shear strength and compression modulus;

[0102] In step S2, the design bearing capacity is 80-150 kPa, the maximum allowable settlement is no more than 50 mm, and the stability safety factor is greater than 1.5; these goals will serve as the basis for the subsequent treatment plan design and construction quality control;

[0103] In step S3, multiple methods such as pre-pressed drainage consolidation, deep mixing, CFG piles, and gravel piles are compared; the applicability of each method, such as the thickness and properties of the soft soil layer, the expected treatment effect, such as consolidation time and reinforcement depth, and economic analysis, such as the treatment cost per unit area, are evaluated; through comprehensive evaluation, the method that best suits the project needs is selected;

[0104] In step S4, a treatment scheme of preloading drainage consolidation combined with deep mixing is adopted; the size of the preloading load is such as 50-100 kPa, the preloading time is such as 6-12 months, the depth of deep mixing is such as 8-15 meters, and the spacing of the mixing piles is such as 1-2 meters;

[0105] In step S5, the scale of the construction drawings is 1:100 or 1:200, the timetable of the construction organization plan is such as the construction period, key nodes, the material list is such as drainage board, curing agent, sand and gravel, the equipment list is such as drilling rig, mixer, vacuum pump, and the personnel configuration is such as engineers, technicians, and construction personnel;

[0106] In step S6, the internal configuration of the intelligent monitoring and control system includes: a sensor network, a data acquisition and transmission device, a central processing unit, an actuator, a user interface, and a safety and early warning system;

[0107] The sensor network includes: pore water pressure sensor: used to monitor the changes in pore water pressure inside the soft soil layer; soil displacement sensor: including surface displacement sensor and deep displacement sensor, used to monitor the horizontal and vertical displacement of the soil; groundwater level sensor: real-time monitoring of groundwater level changes; temperature sensor: monitoring the impact of ambient temperature on soft soil treatment; strain sensor: measuring the strain of the soil and evaluating its stability;

[0108] The data collection and transmission device includes: data collection unit: responsible for collecting data from the sensor network and performing preliminary processing; wireless transmission module: sending the collected data to the central processing unit via wireless signals to reduce the complexity of wiring; wired transmission system (backup): in the case of unstable wireless signals, using wired methods to ensure stable data transmission;

[0109] The central processing unit includes: data processing and analysis software: to process and analyze the collected data, generate charts and reports; control algorithm: based on the monitoring data, automatically adjust the preload and vacuum degree through the preset control algorithm; database management: to store historical data for subsequent analysis and query;

[0110] The actuators include: vacuum pump control system: adjusts the working state of the vacuum pump according to the instructions of the CPU to control the vacuum degree; preload adjustment device: adjusts the size of the preload to adapt to the consolidation of the soil;

[0111] The user interface includes: Monitoring center: operators can view monitoring data and system status in real time through the large screen of the monitoring center; Remote access interface: allows authorized users to remotely access the system through the Internet to perform monitoring and control operations;

[0112] The security and early warning system includes: data encryption: to ensure the security of data transmission; early warning mechanism: when abnormal data is detected, the system automatically issues an early warning to notify management personnel to take corresponding measures;

[0113] In step S6, an environmentally friendly drainage material is used to produce a degradable drainage board for use in a soft foundation treatment project. The formula of the environmentally friendly drainage material includes:

[0114] Biodegradable resin (PBS): 60 parts by weight;

[0115] As a matrix material, PBS has good mechanical properties and biodegradability;

[0116] Reinforcement filler (natural plant fiber): 30 parts by weight;

[0117] Fibers increase the mechanical strength and modulus of the material, but also help increase the degradation rate;

[0118] Plasticizer (ATBC): 10 parts by weight;

[0119] Plasticizers increase the flexibility and processing properties of materials;

[0120] Antioxidant (antioxidant 1010): 1 part by weight;

[0121] Antioxidants prevent oxidative degradation of materials during processing and use;

[0122] Light stabilizer (UV-531): 1 part by weight;

[0123] Light stabilizers prevent materials from degrading under UV exposure;

[0124] Cross-linking agent (melamine formaldehyde resin): 2 parts by weight;

[0125] Cross-linking agents improve the heat resistance and mechanical strength of the material;

[0126] Lubricant (calcium stearate): 1 part by weight;

[0127] Lubricants help improve the processing fluidity of materials;

[0128] In step S7, the diameter of the stirring head is 500-700 mm, the stirring speed is 30-60 rpm, the injection rate of the curing agent is 50-100 liters per meter, and the curing agent is mixed with cement in an amount of 10%-20% of the mass of the soft soil;

[0129] In step S8, the monitoring points are arranged as one monitoring point every 20 square meters, the monitoring frequency is daily or weekly, the settlement rate threshold does not exceed 2 mm / day, the pore water pressure threshold does not exceed 50 kPa, and the soil strength standard such as unconfined compressive strength is not less than 50 kPa;

[0130] In step S9, the quality standards of pre-pressing drainage consolidation and deep mixing are as follows: the installation deviation of the drainage board does not exceed 10 mm, the mixing uniformity of the mixing piles, the quality inspection frequency such as inspection every 100 square meters or every 10% of the project volume, and the treatment measures for unqualified products such as re-construction or reinforcement;

[0131] In step S10, the observation period may be 3-6 months, the number of observation points may be no less than 10 points, the settlement data recording frequency may be at least once a week, and the settlement stability standard may be that the settlement does not exceed 5 mm for three consecutive months.

[0132] From the above we can know:

[0133] In the present invention, by introducing an intelligent monitoring and control system, the entire soft foundation treatment method realizes accurate monitoring and automatic adjustment of the construction process, bringing significant beneficial effects. First, real-time monitoring of key parameters such as pore water pressure, soil deformation and groundwater level enables engineering personnel to quickly respond to changes in soil properties and adjust preload and vacuum in time, thereby optimizing construction efficiency and reducing unnecessary construction delays. Secondly, automated data acquisition and processing greatly improves the accuracy and speed of data processing, reduces human errors, and ensures construction quality. In addition, this intelligent system can also issue early warnings in a timely manner when potential risks are discovered, ensuring construction safety and reducing the possibility of accidents.

[0134] In the present invention, environmentally friendly drainage materials, such as degradable plastic drainage boards or bio-based drainage sand wells, are used to bring environmentally friendly improvements to the soft foundation treatment method. The use of such materials can be naturally degraded after the project is completed, reducing long-term pollution to the soil and groundwater and protecting the ecological environment. At the same time, the use of environmentally friendly materials also improves the sustainability of engineering projects, meeting the current social requirements for green buildings and environmental protection. In addition, the degradability of such materials also reduces the cost of material removal and treatment after the project is completed, reduces the life cycle cost of the entire project, and achieves a win-win situation in economic and environmental benefits.

[0135] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0136] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for treating soft foundation under reinforced fluid muddy soft soil conditions, characterized in that: The method comprises the following steps: S1: Conduct detailed geological survey of the soft soil layer to understand its distribution range, thickness, and physical and mechanical properties, and provide a basis for subsequent treatment plans; S2: Determine the ultimate goal of soft foundation treatment according to project requirements, including bearing capacity, settlement, and stability; S3: According to the geological survey results and treatment objectives, a variety of soft foundation treatment methods are selected, including pre-pressure drainage consolidation, deep mixing, CFG piles, and gravel piles; S4: Taking into account the project cost, construction period and environmental impact factors, the treatment scheme of pre-pressing drainage consolidation combined with deep mixing was determined; S5: Complete the construction drawing design, formulate the construction organization plan, and prepare the materials, equipment and personnel required for construction; S6: Use environmentally friendly drainage materials to ensure that the impact on the environment is reduced while accelerating the consolidation of soft soil layers. Develop an intelligent monitoring and control system to monitor pore water pressure, soil deformation and groundwater level parameters in real time, and automatically adjust the preload and vacuum degree according to the monitoring data to achieve dynamic optimization control; S7: On the basis of pre-compression drainage consolidation, the deep mixing method is used to reinforce the soft soil layer to improve the soil strength; S8: During the construction process, the settlement, pore water pressure and soil strength parameters of the soft soil layer are monitored in real time, and the construction parameters are adjusted according to the monitoring data; S9: Strictly control the construction quality to ensure that the effects of preloading, drainage, consolidation and deep mixing meet the design requirements; S10: After the construction is completed, the settlement of the soft foundation is observed for a period of time to evaluate whether the treatment effect meets the design requirements; S11: Based on the settlement observation results and treatment effect evaluation, organize relevant departments to conduct project acceptance to ensure that the soft foundation treatment achieves the expected goals.

2. A reinforced soft foundation treatment method under fluidized muddy soft soil conditions as claimed in claim 1, characterized in that: In step S1, the arrangement density of the drilling points is one point per 20-50 square meters, the drilling depth must be at least 5 meters below the bottom of the soft soil layer, and a soil sample is taken every 1-2 meters; the laboratory test will include the determination of the physical properties of the soil including specific gravity, moisture content, particle size distribution and mechanical properties including shear strength and compression modulus.

3. A method for treating soft foundation under reinforced fluidized muddy soft soil conditions as claimed in claim 1, characterized in that: In step S2, the design bearing capacity is 80-150 kPa, the maximum allowable settlement is no more than 50 mm, and the stability safety factor is greater than 1.5; these goals will serve as the basis for the subsequent treatment plan design and construction quality control.

4. A method for treating soft foundation under reinforced fluidized muddy soft soil conditions as claimed in claim 1, characterized in that: In step S3, a plurality of methods including pre-pressing drainage consolidation, deep mixing, CFG piles and gravel piles are compared; and the method most suitable for the engineering requirements is selected through comprehensive evaluation.

5. A method for treating soft foundation under reinforced fluidized muddy soft soil conditions as claimed in claim 1, characterized in that: In step S4, a treatment scheme of preloading drainage consolidation combined with deep mixing is adopted; the preloading load is 50-100 kPa, the preloading time is 6-12 months, the depth of deep mixing is 8-15 meters, and the spacing of mixing piles is 1-2 meters; In step S5, the scale of the construction drawing is 1:100 or 1:

200.

6. A method for treating soft foundation under reinforced fluidized muddy soft soil conditions as claimed in claim 1, characterized in that: In step S6, the internal configuration of the intelligent monitoring and control system includes: a sensor network, a data acquisition and transmission device, a central processing unit, an actuator, a user interface, and a safety and early warning system; The sensor network includes: pore water pressure sensor: used to monitor the changes in pore water pressure inside the soft soil layer; soil displacement sensor: including surface displacement sensor and deep displacement sensor, used to monitor the horizontal and vertical displacement of the soil; groundwater level sensor: real-time monitoring of groundwater level changes; temperature sensor: monitoring the impact of ambient temperature on soft soil treatment; strain sensor: measuring the strain of the soil and evaluating its stability; The data collection and transmission device includes: data collection unit: responsible for collecting data from the sensor network and performing preliminary processing; wireless transmission module: sending the collected data to the central processing unit via wireless signals; wired transmission system: in the case of unstable wireless signals, using wired methods to ensure stable data transmission; The central processing unit includes data processing and analysis software: it processes and analyzes the collected data and generates charts and reports; The actuators include: vacuum pump control system: adjusts the working state of the vacuum pump according to the instructions of the CPU to control the vacuum degree; preload adjustment device: adjusts the size of the preload to adapt to the consolidation of the soil; The user interface includes: Monitoring center: operators can view monitoring data and system status in real time through the large screen of the monitoring center; Remote access interface: allows authorized users to remotely access the system through the Internet to perform monitoring and control operations; The security and early warning system includes: data encryption: ensuring the security of data transmission; early warning mechanism: when abnormal data is detected, the system automatically issues an early warning to notify management personnel to take corresponding measures.

7. A method for treating soft foundation under reinforced fluidized muddy soft soil conditions as claimed in claim 1, characterized in that: In step S6, an environmentally friendly drainage material is used to produce a degradable drainage board for use in a soft foundation treatment project. The formula of the environmentally friendly drainage material includes: Biodegradable resin: 50-60 parts by weight; Reinforcement filler: 20-30 parts by weight; Plasticizer: 5-10 parts by weight; Antioxidant: 0.5-1 parts by weight; Light stabilizer: 0.5-1 parts by weight; Cross-linking agent: 1-2 parts by weight; Lubricant: 0.5-1 parts by weight.

8. A method for treating soft foundation under reinforced fluidized muddy soft soil conditions as claimed in claim 1, characterized in that: In step S7, the diameter of the stirring head is 500-700 mm, the stirring speed is 30-60 rpm, and the injection rate of the curing agent is 50-100 liters per meter.

9. A method for treating soft foundation under reinforced fluidized muddy soft soil conditions as claimed in claim 1, characterized in that: In step S8, the monitoring points are arranged at one monitoring point every 20 square meters, the monitoring frequency is daily or weekly, the sedimentation rate threshold does not exceed 2 mm / day, and the pore water pressure threshold does not exceed 50 kPa.

10. A method for treating soft foundation under reinforced fluidized muddy soft soil conditions as claimed in claim 1, characterized in that: In step S9, the quality standards of pre-pressing drainage consolidation and deep mixing include the installation deviation of the drainage board not exceeding 10 mm, the mixing uniformity of the mixing piles, the quality inspection frequency such as inspection every 100 square meters or every 10% of the project volume, and the treatment measures for unqualified products such as re-construction or reinforcement; In step S10, the observation period may be 3-6 months, the number of observation points may be no less than 10 points, the settlement data recording frequency may be at least once a week, and the settlement stability standard may be that the settlement does not exceed 5 mm for three consecutive months.