Foundation treatment process

Abstract

The invention provides a foundation treatment process, and relates to the technical field of foundation treatment. The foundation treatment process specifically comprises the following steps: S1, geological survey and three-dimensional modeling; s2, establishing a micro-seismic monitoring system; s3, applying a self-healing material; s4, construction of a rotary drilling rig; s5, performing real-time construction monitoring and adjustment; s6, detecting the hole forming quality of the pile foundation; s7, concrete is poured, and a self-healing material is injected; and S8, geological treatment and acceptance after construction. Safety and accuracy of the construction process can be guaranteed by monitoring changes of underground rock strata and karst caves in real time, the construction quality of each pile foundation is guaranteed through data analysis and dynamic adjustment of a construction scheme, self-repairing of the material can be achieved through the fungus self-healing cement-based material, durability and stability of the pile foundations are enhanced, and the construction quality of the pile foundations is improved. The long-term effect of foundation treatment is improved, the later maintenance cost is reduced, the pile foundation construction quality under the complex karst geological condition can be ensured, the construction efficiency is improved, the cost is reduced, and the engineering safety and stability are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of foundation treatment, in particular to a foundation treatment process. Background Art

[0002] A coal-fired power plant, also known as a coal-fired power station or thermal power plant, is an industrial facility that generates electricity by burning coal. In these power plants, the combustion of coal generates heat energy, which is used to heat water and generate steam. This steam drives the steam turbine to rotate, and the turbine drives the generator, thereby generating electricity. Coal-fired power plants are built and used in many areas. However, in the process of building such power plants, some areas may encounter greater difficulties, especially in karst areas. This is because the underground rock formations in these areas are buried at different depths, the underground fissure water varies greatly, and the development of caves varies, all of which make it challenging to establish a stable foundation.

[0003] In the prior art, traditional concrete pouring technology mainly uses pumping equipment to transport concrete to the construction site. At the construction site, a vibrating rod is used to vibrate the concrete to ensure its density. This process mainly relies on manual quality inspection, such as measuring the aperture, depth, and vibration effect. Since these operations are highly dependent on the technical level of the workers, there is a possibility of human error, and it is difficult to achieve real-time monitoring and data collection of construction quality. In addition, the level of automation is low, which is not conducive to coping with complex construction environments and high quality requirements. Incomplete data records make subsequent quality tracing and analysis difficult. In addition, in most cases, the injection operation of self-healing materials is carried out manually through simple grouting pumps and pipelines. This method makes it difficult to accurately control the injection amount and position of self-healing materials, resulting in unstable injection effects, and it is impossible to monitor parameter changes during the injection process in real time, so it is impossible to make timely adjustments. Such operations not only lead to large waste of materials and high costs, but also make it difficult to adapt to special geological environments such as karst areas. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a foundation treatment process, which solves the problem that the existing construction process is difficult to control quality and has high costs.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a foundation treatment process, specifically comprising the following steps:

[0006] S1. Geological Survey and 3D Modeling

[0007] Conduct preliminary geological surveys using geological radar and geological drilling equipment, and build a three-dimensional geological model by combining geological radar data and borehole sampling results;

[0008] S2. Establish a microseismic monitoring system

[0009] A microseismic monitoring system is deployed at the construction site to monitor the changes in underground rock formations and caves in real time. Through microseismic data, potential geological instability factors can be discovered in a timely manner and the construction plan can be adjusted;

[0010] S3. Application of self-healing materials

[0011] During the process of pile foundation drilling and pouring, self-healing concrete materials are used. When cracks occur, self-healing concrete automatically repairs itself through internal chemical reactions, thereby enhancing the durability and stability of the pile foundation. The self-healing concrete ratio is: 100 parts of cement, 200 parts of fine aggregate, 300 parts of coarse aggregate, 50 parts of water, 0.5-1 parts of Bacillus liquid, and 0.05-0.1 parts of nutrient solution;

[0012] S4. Rotary Drilling Rig Construction

[0013] Use a rotary drilling rig to adjust the drill bit angle and pressure based on the 3D geological model and real-time monitoring data to ensure the verticality and quality of the pile hole;

[0014] S5. Real-time construction monitoring and adjustment

[0015] During the construction process, geological and construction data are obtained in real time, and the construction plan is dynamically adjusted through data analysis to ensure the construction accuracy and quality of each pile foundation;

[0016] S6. Pile foundation hole quality inspection

[0017] Use high-precision measuring instruments to detect the verticality and diameter of the pile hole, and adopt mud wall protection technology to prevent hole wall collapse and ensure hole stability;

[0018] S7. Injection of self-healing material into concrete piles

[0019] After the pile foundation is bored, self-healing concrete is poured to ensure the durability of the pile foundation. For areas with serious cave development, multiple pouring and injection of self-healing materials are used to ensure the quality of the pile foundation.

[0020] S8. Post-construction geological treatment and acceptance

[0021] After the construction is completed, the pile foundation is subjected to comprehensive quality inspection and geological treatment to ensure that the pile foundation bearing capacity meets the design requirements, and the inspection data is recorded to form a detailed construction report.

[0022] Preferably, in step S1, the geological survey and three-dimensional modeling are performed using Leapfrog or Petre l.

[0023] Preferably, the main components of the microseismic monitoring system in step S2 of establishing the microseismic monitoring system are:

[0024] Sensors: Seismic sensors or seismometers are used to detect small vibrations in the ground. These sensors can be velocimeters, accelerometers or displacement meters.

[0025] Data acquisition units: These devices are responsible for collecting data from sensors and converting it into a format that can be analyzed. Data acquisition units have high-speed processing capabilities and can process data from multiple sensors.

[0026] Data transmission system: including wireless or wired communication system, used to transmit the collected data to the central monitoring station or cloud platform in real time;

[0027] Analysis and processing software: Using SeisComP or ObsPy, software is used to analyze microseismic data, identify shaking patterns, assess geological stability, and generate alerts. These software can help experts analyze changes in underground structures and predict potential risks;

[0028] Visualization tool: Provides a graphical interface to display real-time and historical data and assist in decision support.

[0029] Preferably, the concentration of the Bacillus bacteria solution in the self-healing material used in step S3 is 10^7-10^9 CFU / mL, and the formula of the nutrient solution is 0.1%-0.5% calcium lactate, 0.1%-1.0% urea, 0.1%-2.0% casein, and 0.5%-3.0% glucose.

[0030] Preferably, in the step S4, the following hole-forming processes are adopted for different geological conditions during the construction of the rotary drilling rig:

[0031] Dry drilling technology: suitable for general geological conditions;

[0032] Replacement filling hole forming process: suitable for the situation where caves are well developed and groundwater is abundant;

[0033] Impact hole-forming technology: suitable for hard rock formations and large caves;

[0034] Steel pipe sleeve drilling process: suitable for multi-layer caves and complex geological conditions.

[0035] Preferably, the S5 real-time construction monitoring and adjustment requires the installation of aperture monitoring sensors, displacement sensors, pressure sensors and temperature sensors to achieve real-time data monitoring.

[0036] The present invention provides a foundation treatment process, which has the following beneficial effects:

[0037] The invention provides a foundation treatment process. The invention can collect various data in the construction process in real time through a sensor system, including aperture, pressure, and temperature, to ensure the accuracy and timeliness of the data. The data analysis system provided can process and analyze the data in real time, timely discover abnormal situations and issue early warnings to prevent construction quality problems. The intelligent control system automatically adjusts construction parameters such as drilling speed and pouring speed according to real-time data to improve construction efficiency and quality. The set injection amount and position of the self-healing material can be accurately controlled by the intelligent system to ensure that the material effectively fills cracks or gaps, improves the injection effect, reduces material waste, and reduces costs. All data in the construction process are recorded in detail to form a complete construction file, which is convenient for later quality tracing and analysis. Through the analysis of historical data, the construction process can be continuously optimized to improve the construction quality and efficiency. The invention realizes the intelligence, precision and efficiency of concrete pouring and self-healing material injection by introducing advanced technologies of real-time monitoring, intelligent analysis and automatic control, which not only improves the construction quality and efficiency, but also greatly reduces the cost and environmental impact. It has significant advantages and is very suitable for construction in karst areas. DETAILED DESCRIPTION

[0038] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] The embodiment of the present invention provides a foundation treatment process, which specifically includes the following steps:

[0040] S1. Geological Survey and 3D Modeling

[0041] Use geological radar and geological drilling equipment to conduct preliminary geological surveys, and combine geological radar data with borehole sampling results to construct a three-dimensional geological model. Combine geological radar data with borehole sampling results to construct a three-dimensional geological model.

[0042] Specific implementation of geological survey and 3D modeling:

[0043] Initial survey phase

[0044] Using high-precision geological radar (GPR), grid scanning is carried out on the site to obtain the preliminary distribution of underground rock layers and caves. Geological radar can penetrate the surface, and the reflected wave signal is used to construct a two-dimensional profile of the underground structure. Drilling sampling is carried out at different grid node locations to obtain core samples at different depths underground to analyze the hardness, structure and groundwater conditions of the rock layer.

[0045] Detailed survey phase

[0046] According to the preliminary survey results, a detailed drilling plan is formulated to increase the density of drilling in key areas to find out the precise location, size and shape of underground caves. A high-density geological radar scan is conducted again in the detailed survey area to improve the precision and accuracy of the data. Combined with multi-frequency resistivity measurement technology, electrode arrays are laid on the surface and underground to measure the changes in geological resistivity and further confirm the distribution of underground caves and rock formations.

[0047] 3D geological modeling

[0048] Summarize all survey data (geosurface radar, borehole sampling, multi-frequency resistivity measurement) to establish a complete data set. Preprocess data from different sources to eliminate noise and errors to ensure data consistency and accuracy. Select appropriate 3D geological modeling software (such as Leapfrog, Petre l, etc.) and import the preprocessed survey data. Use the automatic modeling function of the software to generate a 3D structural model of underground geology. Perform manual corrections based on actual conditions to ensure the accuracy and completeness of the model. In the 3D model, focus on marking the location, shape and size of the underground caves, and compare and analyze them with the location of the surface buildings. Compare the 3D model with the actual geological conditions on site, verify the accuracy of the model by additional drilling and sampling, and make necessary corrections. Use the 3D model for numerical simulation to predict the geological problems that may be encountered during pile foundation construction and optimize the construction plan.

[0049] Applications and Integrations

[0050] According to the three-dimensional geological model, a specific construction plan is formulated for each pile foundation, including pile length, hole-forming process and injection method, so as to achieve one plan for each pile. During the construction process, the construction plan is dynamically adjusted in combination with the intelligent monitoring system to ensure the construction quality and safety of each pile foundation. The three-dimensional geological model is used to guide the construction, clarify the location, depth and hole-forming process of each pile foundation, and reduce construction risks. The construction data is fed back to the three-dimensional model in real time, and the model is updated and optimized to ensure the consistency of the construction with the geological model. Through the above specific implementation steps, intelligent geological survey and three-dimensional modeling can effectively improve the accuracy and construction efficiency of foundation treatment, ensure the quality of pile foundation construction under complex karst geological conditions, reduce construction costs, and improve the safety and stability of the project.

[0051] S2. Establish a microseismic monitoring system

[0052] A microseismic monitoring system is deployed at the construction site to monitor the changes in underground rock formations and caves in real time. Through microseismic data, potential geological instability factors can be discovered in time and the construction plan can be adjusted.

[0053] Specific operations for installing the microseismic monitoring system:

[0054] Conduct a preliminary survey of the construction site to determine the geological structure and cave distribution of the monitoring area. Determine the requirements of the microseismic monitoring system, including the number, layout, and depth of monitoring points, based on the construction needs and the geological conditions of the site. Rationally arrange monitoring points in the construction area to ensure that the monitoring range covers all key areas. Usually, the distance between each monitoring point is set according to the geological conditions and monitoring accuracy requirements. Select appropriate microseismic monitoring equipment, including sensors, data collectors, and signal transmission devices. The equipment needs to have high sensitivity and stability to capture underground microseismic activities in real time.

[0055] Equipment installation and debugging

[0056] Drill holes at the designed monitoring point locations. The drilling depth is determined according to the geological conditions and monitoring requirements, and usually needs to reach underground caves or key rock formations. Place high-sensitivity microseismic sensors in the boreholes to ensure that the sensors are close to the rock formations or caves. During the installation of the sensors, care should be taken to protect them to avoid damage caused by installation operations. After installation, fix them with special materials and seal the boreholes to prevent external interference from affecting the test results. Install a data collector near each monitoring point to receive the microseismic signals sent back by the sensors. The data collector must have a high sampling rate and large storage capacity. Lay out signal transmission lines and connect the data collector to the central control room to ensure real-time transmission and centralized processing of monitoring data. Wired or wireless transmission methods can be selected according to site conditions and construction requirements. Debug the installed sensors, data collectors, and signal transmission systems to ensure that each part of the equipment is working properly and the signal transmission is stable and correct. Calibrate the system through artificial vibration or other known vibration sources to ensure the sensitivity and accuracy of the microseismic monitoring system and adjust the parameters to obtain the best monitoring effect.

[0057] Data monitoring and processing

[0058] Start the microseismic monitoring system to monitor the microseismic activities of underground rock formations and caves in real time. The monitoring platform in the central control room can obtain data from each monitoring point at any time. Set the threshold. When abnormal vibrations (such as cave collapse and rock formation movement) are detected, the system will automatically alarm and notify the on-site personnel to deal with them in time. Store the monitoring data in the central database for orderly management and backup. Analyze the microseismic data through professional seismic analysis software, identify and locate underground microseismic activities, and evaluate their impact on construction. Generate monitoring reports regularly to record the microseismic activities during the monitoring period to provide a scientific basis for construction decisions. Feedback the monitoring data and analysis results to the construction team in a timely manner, and dynamically adjust the construction plan according to the monitoring results to ensure construction safety and quality. Continuously carry out microseismic monitoring throughout the construction process to promptly discover and solve potential geological problems and ensure the smooth progress of the construction process. The microseismic monitoring system can effectively capture and analyze underground microseismic activities, provide real-time geological information support for construction, and ensure the quality and safety of pile foundation construction under complex karst geological conditions.

[0059] S3. Application of self-healing materials

[0060] During the pile foundation drilling and pouring process, self-healing concrete materials are used. When cracks occur, the self-healing concrete automatically repairs itself through internal chemical reactions to enhance the durability and stability of the pile foundation. The self-healing concrete ratio is: 100 parts of cement, 200 parts of fine aggregate, 300 parts of coarse aggregate, 50 parts of water, 0.5-1 parts of Bacillus solution, and 0.05-0.1 parts of nutrient solution.

[0061] The ratio of fungi to nutrients

[0062] The amount of bacteria added is 0.5%-1.0% (weight ratio), which is adjusted according to the concentration and activity of the bacteria.

[0063] Nutrient addition amount: The amount of nutrients added is 5%-10% of the weight of the strain.

[0064] Preparation of fungus cement-based materials

[0065] Preparation of bacterial strains: Cultivate the selected bacterial strains to an appropriate concentration to form a bacterial solution. The commonly used concentration is 10^7-10^9 CFU / mL.

[0066] Preparation of nutrient solution: Dissolve nutrients in water to form nutrient solution.

[0067] Preparation of cement-based materials: Prepare cement mortar or concrete according to conventional methods, and add bacterial solution and nutrient solution into mixing water in proportion.

[0068] Ratio:

[0069] Cement: 100 parts;

[0070] Fine aggregate (sand): 200 parts;

[0071] Coarse aggregate (stone): 300 parts;

[0072] Water: 50 parts;

[0073] Bacterial liquid: 0.5-1 part;

[0074] Nutrient solution: 5%-10% of the weight of the bacterial solution.

[0075] S4. Rotary Drilling Rig Construction

[0076] A rotary drilling rig is used to adjust the drill bit angle and pressure according to the three-dimensional geological model and real-time monitoring data to ensure the verticality and hole quality of the pile hole.

[0077] Select efficient and stable intelligent rotary drilling rigs to ensure that they have the ability to adapt to complex geological conditions and are equipped with multi-functional drill bits to cope with different rock formations and cave conditions.

[0078] Before construction, the rotary drilling rig is fully debugged to ensure that the electrical control system and hydraulic pipeline system of the equipment are operating normally, and key components such as the drill bit, drill rod and steel casing are in the best condition. According to the specific plan of the pile foundation, the rotary drilling rig is started for drilling construction. For general geological conditions, the self-contained rotary drilling bit is used for vertical digging to ensure fast hole-making speed and high accuracy. When encountering large caves or underground rivers, the steel casing wall protection process or concrete replacement process is used to fill the cave to ensure the quality of pile foundation hole-making. For slope rock formations and interlayer rocks, a multifunctional drill bit that combines a high-strength rotary flat-cut drill bit with a conventional spiral drill bit is used to ensure the verticality and construction quality of the hole-making. Under the comprehensive application of mud wall impact drilling and rotary drilling methods, mud wall protection technology is used to protect the hole wall, prevent hole collapse, and ensure the quality of the hole. During the construction process, sensors are used to monitor various parameters in the drilling process in real time to ensure that the verticality and depth of the borehole meet the design requirements. Real-time record of construction data, analysis of abnormal conditions in the hole-making process, and timely adjustment of construction parameters. After the construction is completed, the diameter and depth of the pile hole are tested in detail to ensure that they meet the design requirements. Static load tests and other mechanical performance tests of the pile foundation are carried out to ensure that the bearing capacity of the pile foundation meets the design standards.

[0079] S5. Real-time construction monitoring and adjustment

[0080] During the construction process, geological and construction data are acquired in real time, and through data analysis, the construction plan is dynamically adjusted to ensure the construction accuracy and quality of each pile foundation.

[0081] According to the specific conditions of the construction site, sensors are installed in key locations, including the pile foundation hole area, the drilling rig operation area, and the potential geological change area. Sensors are aperture monitoring sensors, displacement sensors, pressure sensors, and temperature sensors, etc., to comprehensively monitor various parameters during the construction process. Build a data acquisition system, including data acquisition terminals, transmission equipment, and data processing centers, to ensure that the data collected by the sensors can be transmitted and processed in real time. Use wireless or wired transmission methods to transmit the data collected by the field sensors to the data processing center in real time for analysis and processing. Read data from the sensors regularly to ensure the accuracy and integrity of the data. For important parameters such as aperture, depth, and pressure, the acquisition frequency should be increased. The collected data is stored in a database to ensure the security and traceability of the data. Use data analysis software to analyze the collected data in real time to monitor the changes in various parameters during the pile foundation construction process, such as aperture deviation, drilling speed, and pressure changes. Set up anomaly detection algorithms to identify abnormal conditions in the data in real time, such as hole wall collapse, drill bit deviation, etc., and issue early warning signals in time. Through the intelligent control system, the construction parameters of the rotary drilling rig, such as drilling speed, pressure and drill angle, are automatically adjusted according to the real-time monitoring data to ensure the quality and safety of the construction. A real-time feedback mechanism is established to feed back the adjusted parameters and construction status to the operator and the data processing center to ensure the timely transmission and processing of information. When the monitoring system issues an abnormal warning signal, the operator should immediately check the on-site situation, conduct manual intervention according to the warning information, adjust the construction parameters or suspend the construction. Through the remote monitoring system, experienced experts are invited to remotely diagnose and guide abnormal situations and provide professional solutions.

[0082] S6. Pile foundation hole quality inspection

[0083] Use high-precision measuring instruments to detect the verticality and diameter of the pile hole, and adopt mud wall protection technology to prevent hole wall collapse and ensure hole stability.

[0084] According to the survey results, a detailed construction plan is formulated for each pile foundation, including the pile foundation length, hole forming process, pile diameter and specific construction process. Sensors are installed at key locations, including aperture monitoring sensors, pressure sensors and temperature sensors, etc., to collect construction data in real time. A data acquisition system is built to ensure that the data collected by the sensors can be transmitted to the data processing center in real time. The collected data is analyzed in real time using data analysis software to monitor the changes in various parameters during the pile foundation construction process, such as aperture deviation, drilling speed, pressure change, etc. An anomaly detection algorithm is set up to identify anomalies in the data in real time, such as hole wall collapse, drill bit deviation, etc., and issue early warning signals in time. During the hole forming process, the diameter and depth of the pile hole are regularly tested using special detection tools to ensure that they meet the design requirements. Through sensors and on-site observations, the stability of the hole wall is detected in real time to prevent the occurrence of hole collapse. After the construction is completed, a static load test is carried out to determine the vertical ultimate bearing capacity of the single pile to ensure that the bearing capacity of the pile foundation meets the design standard. The mechanical properties of the pile foundation are tested to determine parameters such as pile end resistance and side wall friction resistance to ensure that the quality of the pile foundation meets the requirements. Record all data collected during the construction process in detail, including parameters, abnormal conditions and adjustment measures during the drilling process. Write a detailed test report to record the data and results of the pile foundation test to ensure the integrity and traceability of the data. Conduct a comprehensive analysis of the data collected during the construction process to identify the key factors affecting the quality of the pile foundation and provide improvement suggestions for subsequent construction. Evaluate the drilling quality based on the test data to ensure that the quality of the pile foundation construction meets excellent standards.

[0085] S7. Injection of self-healing material into concrete piles

[0086] After the pile foundation is bored, self-healing concrete is poured to ensure the durability of the pile foundation. For areas with severe cave development, multiple pouring and injection of self-healing materials are used to ensure the quality of the pile foundation.

[0087] Before pouring concrete, ensure that there is no debris or water in the pile hole, clean the hole thoroughly, and ensure that the hole wall is stable. For cases where the hole wall is unstable or prone to collapse, measures such as mud wall protection or steel casing are used to ensure the stability of the hole wall. Pour concrete evenly from the bottom of the hole to ensure that the concrete reaches the bottom of the hole smoothly and avoid voids. Ensure the continuity of concrete pouring, avoid pauses in the middle, and prevent the formation of cold joints. During the pouring process, use a vibrator to vibrate the concrete to ensure that the concrete is dense and avoid honeycombs and voids. After the pouring is completed, treat the top of the pile in time to ensure that the surface is flat. Take appropriate maintenance measures, such as covering with wet cloth or sprinkling water, to keep the concrete moist and ensure its strength development. According to the test results during the pile foundation construction process, determine the location where the self-healing material needs to be injected, such as the area where cracks or voids appear. Drill holes at the location where the self-healing material needs to be injected to ensure that the injection pipe can reach the designated location smoothly. Use a grouting pump to inject the self-healing material into the predetermined location through the grouting pipe to ensure that the material can be evenly distributed. According to the actual situation, control the injection amount of self-healing material to avoid excessive or insufficient injection. Observe the reaction of the self-healing material after injection to ensure that it fully fills and self-heals in the cracks or gaps. After the injection is completed, inspect and evaluate the injection area to ensure that the effect of the self-healing material meets the expectations. Record the injection process and results in detail to form a construction file for subsequent reference and analysis.

[0088] S8. Post-construction geological treatment and acceptance

[0089] After the construction is completed, the pile foundation is subjected to comprehensive quality inspection and geological treatment to ensure that the pile foundation bearing capacity meets the design requirements, and the inspection data is recorded to form a detailed construction report.

[0090] The local foundation treatment process ensures the construction quality and efficiency under complex karst geological conditions through the integration of multiple steps and system components. The following is a description of the system architecture of the process:

[0091] 1. 3D geological modeling system

[0092] Components and functions

[0093] Geological Radar (GPR):

[0094] Function: Conduct preliminary and detailed geological surveys to obtain two-dimensional profiles of underground rock formations and caves.

[0095] Drilling equipment:

[0096] Function: Drill and sample at different grid node locations, obtain core samples, and analyze underground rock formations and hydrological conditions.

[0097] 3D geological modeling software (Leapfrog, Petre l):

[0098] Function: Integrate geological radar data, borehole sampling data and resistivity measurement data to construct a three-dimensional structural model of underground geology.

[0099] Operation process

[0100] Preliminary and detailed surveys, using high-density geological radar scanning and multi-frequency resistivity measurements, provide detailed information on underground rock formations and caves.

[0101] Data aggregation and preprocessing, using software to generate a three-dimensional geological model, and manual correction and verification.

[0102] Combined with the three-dimensional model, numerical simulation is performed to predict the geological problems that may be encountered during the construction process.

[0103] 2. Microseismic monitoring system

[0104] Components and functions

[0105] Sensors (seismic sensors or seismometers):

[0106] Function: Detect tiny vibrations in the ground and capture changes in underground rock formations and caves.

[0107] Data acquisition unit:

[0108] Function: Collect data from sensors and convert it into an analyzable format.

[0109] Data transmission system:

[0110] Function: Real-time transmission of monitoring data to the central monitoring station or cloud platform.

[0111] Analysis and processing software (Se isComP, ObsPy):

[0112] Function: Analyze microseismic data, assess geological stability, and generate early warning signals.

[0113] Visualization Tools:

[0114] Function: Provides a graphical interface to display real-time and historical data and assist in decision support.

[0115] Operation process

[0116] Reasonably arrange monitoring points at the construction site and install sensors and data acquisition units.

[0117] The data transmission system transmits the monitoring data to the central control room in real time.

[0118] Analysis and processing software analyzes microseismic data and evaluates geological conditions in real time.

[0119] Dynamically adjust construction plans based on real-time data to ensure construction safety and quality.

[0120] 3. Self-healing concrete system

[0121] Components and functions

[0122] Self-healing materials (Bacillus liquid, nutrient solution):

[0123] Function: Adding self-healing materials to concrete can automatically repair cracks through internal chemical reactions, thereby enhancing durability and stability.

[0124] Operation process

[0125] The bacterial solution and the nutrient solution are added into cement-based materials according to a proportion to prepare self-healing concrete.

[0126] Self-healing concrete is used during the pile foundation boring and pouring process to ensure its uniform distribution.

[0127] For areas with severe cave development, multiple injections are carried out to ensure effective filling of self-healing materials.

[0128] 4. Rotary drilling rig construction system

[0129] Components and functions

[0130] Intelligent rotary drilling rig:

[0131] Function: Adjust the drill bit angle and pressure according to real-time monitoring data to ensure the verticality and hole quality of the pile hole.

[0132] Operation process

[0133] Choose an efficient and intelligent rotary drilling rig equipped with a multi-functional drill bit to cope with different rock formations.

[0134] Drilling construction is carried out according to the three-dimensional geological model, using different hole-forming techniques.

[0135] Monitor the parameters during the drilling process in real time and adjust the construction plan.

[0136] 5. Real-time construction monitoring system

[0137] Components and functions

[0138] Sensors (aperture monitoring sensor, displacement sensor, pressure sensor, temperature sensor): Function: Real-time monitoring of various parameters during the construction process.

[0139] Data acquisition and transmission system:

[0140] Function: Ensure real-time data transmission and processing.

[0141] Intelligent control system:

[0142] Function: Automatically adjust construction parameters based on real-time monitoring data.

[0143] Operation process

[0144] Install sensors at key locations and build data collection and transmission systems.

[0145] Acquire and analyze construction data in real time, identify abnormal situations and issue early warnings.

[0146] The intelligent control system automatically adjusts construction parameters to ensure construction quality.

[0147] 6. Pile foundation hole quality detection system

[0148] Components and functions High-precision measuring instruments:

[0149] Function: Check the verticality and diameter of pile holes.

[0150] Operation process

[0151] During the drilling process, regular inspections are performed using special inspection tools and sensors.

[0152] Monitor the stability of the hole wall in real time to prevent hole collapse.

[0153] After the construction is completed, mechanical properties tests are carried out to ensure the quality of the pile foundation.

[0154] 7. Concrete pile self-healing material injection system

[0155] Components and functions

[0156] Grouting pump and injection pipe:

[0157] Function: Inject self-healing material evenly into the predetermined location.

[0158] Operation process

[0159] Clean the hole and take wall protection measures to ensure the quality of poured concrete.

[0160] Inject self-healing materials as needed and observe their response to ensure the desired effect is achieved.

[0161] Record the injection process and results to form construction files.

[0162] 8. Post-construction geological treatment and acceptance system

[0163] Components and functions

[0164] Quality testing equipment:

[0165] Function: Conduct comprehensive quality inspection on pile foundation.

[0166] Operation process

[0167] After the construction is completed, comprehensive quality inspection and geological treatment will be carried out.

[0168] Ensure that the bearing capacity of the pile foundation meets the design requirements and record the test data.

[0169] Generate detailed construction reports to ensure data integrity and traceability.

[0170] Through the integration and collaboration of the above systems, the foundation treatment process can effectively improve the construction quality and efficiency, and ensure the quality and safety of pile foundation construction under complex karst geological conditions.

[0171] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foundation treatment process, characterized in that: The specific steps include: S1. Geological Survey and 3D Modeling Conduct preliminary geological surveys using geological radar and geological drilling equipment, and build a three-dimensional geological model by combining geological radar data and borehole sampling results; S2. Establish a microseismic monitoring system A microseismic monitoring system is deployed at the construction site to monitor the changes in underground rock formations and caves in real time. Through microseismic data, potential geological instability factors can be discovered in a timely manner and the construction plan can be adjusted; S3. Application of self-healing materials During the process of pile foundation drilling and pouring, self-healing concrete materials are used. When cracks occur, self-healing concrete automatically repairs itself through internal chemical reactions, thereby enhancing the durability and stability of the pile foundation. The self-healing concrete ratio is: 100 parts of cement, 200 parts of fine aggregate, 300 parts of coarse aggregate, 50 parts of water, 0.5-1 parts of Bacillus liquid, and 0.05-0.1 parts of nutrient solution; S4. Rotary Drilling Rig Construction Use a rotary drilling rig to adjust the drill bit angle and pressure based on the 3D geological model and real-time monitoring data to ensure the verticality and quality of the pile hole; S5. Real-time construction monitoring and adjustment During the construction process, geological and construction data are obtained in real time, and the construction plan is dynamically adjusted through data analysis to ensure the construction accuracy and quality of each pile foundation; S6. Pile foundation hole quality inspection Use high-precision measuring instruments to detect the verticality and diameter of the pile hole, and adopt mud wall protection technology to prevent hole wall collapse and ensure hole stability; S7. Injection of self-healing material into concrete piles After the pile foundation is bored, self-healing concrete is poured to ensure the durability of the pile foundation. For areas with serious cave development, multiple pouring and injection of self-healing materials are used to ensure the quality of the pile foundation. S8. Post-construction geological treatment and acceptance After the construction is completed, the pile foundation is subjected to comprehensive quality inspection and geological treatment to ensure that the pile foundation bearing capacity meets the design requirements, and the inspection data is recorded to form a detailed construction report.

2. A foundation treatment process according to claim 1, characterized in that: In the step S1, Leapfrog and Petrel are used for modeling in geological survey and three-dimensional modeling.

3. A foundation treatment process according to claim 1, characterized in that: The step S2 establishes a microseismic monitoring system. The main components of the microseismic monitoring system are: Sensors: Seismic sensors or seismometers are used to detect small vibrations in the ground. These sensors can be velocimeters, accelerometers or displacement meters. Data acquisition units: These devices are responsible for collecting data from sensors and converting it into a format that can be analyzed. Data acquisition units have high-speed processing capabilities and can process data from multiple sensors. Data transmission system: including wireless or wired communication system, used to transmit the collected data to the central monitoring station or cloud platform in real time; Analysis and processing software: Using SeisComP or ObsPy, software is used to analyze microseismic data, identify shaking patterns, assess geological stability, and generate alerts. These software can help experts analyze changes in underground structures and predict potential risks; Visualization tool: Provides a graphical interface to display real-time and historical data and assist in decision support.

4. A foundation treatment process according to claim 1, characterized in that: The concentration of the Bacillus liquid in the self-healing material used in step S3 is 10^7-10^9 CFU / mL, and the formula of the nutrient solution is 0.1%-0.5% calcium lactate, 0.1%-1.0% urea, 0.1%-2.0% casein, and 0.5%-3.0% glucose.

5. A foundation treatment process according to claim 1, characterized in that: In the step S4, the following hole-forming processes are adopted in the construction of the rotary drilling rig according to different geological conditions: Dry drilling technology: suitable for general geological conditions; Replacement filling hole forming process: suitable for the situation where caves are well developed and groundwater is abundant; Impact hole-forming technology: suitable for hard rock formations and large caves; Steel pipe sleeve drilling process: suitable for multi-layer caves and complex geological conditions.

6. A foundation treatment process according to claim 1, characterized in that: In the real-time construction monitoring and adjustment of S5, aperture monitoring sensors, displacement sensors, pressure sensors and temperature sensors need to be installed to realize real-time data monitoring.