Shield tunnel construction method for preventing soil sticks from being generated by high-strength cohesive soil

Abstract

The invention discloses a shield tunnel construction method for preventing generation of soil sticks for high-strength cohesive soil, and relates to the technical field of shield tunnel construction methods.The shield tunnel construction method comprises the steps that a high-strength cohesive soil layer in a construction area is evaluated in detail through a geological exploration technology, and soil physicochemical property parameters are obtained; according to the obtained physical and chemical property parameters of the soil, a muck conveying mechanism suitable for the characteristics of the high-strength cohesive soil is designed; a muck conveying mechanism is arranged in the shield tunneling machine, soil in front of an excavation face is improved through a soil conditioner, the viscosity and friction force of the soil are reduced, and excavation face conditions are obtained; a sensor network is installed at key parts of the shield tunneling machine, a monitoring and feedback system is established, the working state and surrounding environment change data are monitored in real time, tunneling parameters are dynamically adjusted according to the data, and the working state data of the shield tunneling machine are obtained; and on the basis of working state data of the shield tunneling machine, a cutterhead and a cutter are checked, cleaned or replaced, meanwhile, excavated muck is subjected to environment-friendly treatment, and a construction environment is obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of shield tunnel construction methods, in particular to a shield tunnel construction method for preventing soil sticks in high-strength cohesive soil. Background Art

[0002] The shield tunnel construction method is an advanced underground tunnel excavation technology, mainly used for the construction of urban underground transportation, water conservancy facilities and other underground projects.

[0003] In the field of shield tunnel construction methods, the geological exploration before traditional construction is not accurate enough, resulting in insufficient understanding of the specific distribution and characteristics of high-strength cohesive soil layers, thus affecting the selection of subsequent design and construction strategies. Moreover, high-strength cohesive soil is prone to adhering to the muck conveying equipment, resulting in blockage or the formation of soil sticks, affecting construction efficiency and increasing equipment maintenance costs. At the same time, high-strength cohesive soil layers have strong viscosity and large friction, increasing the resistance of the shield machine to advance, which may lead to unstable excavation faces and increase construction risks. Summary of the Invention

[0004] In view of the above existing problems, the present invention is proposed.

[0005] Therefore, the present invention provides a shield tunnel construction method for preventing soil sticks in high-strength cohesive soil to solve the problem that the geological exploration before traditional construction is not accurate enough, resulting in insufficient understanding of the specific distribution and characteristics of high-strength cohesive soil layers, thus affecting the selection of subsequent design and construction strategies, and that high-strength cohesive soil is prone to adhering to the muck conveying equipment, resulting in blockage or the formation of soil sticks.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides a shield tunnel construction method for preventing soil sticks in high-strength cohesive soil, which includes:

[0008] Adopting geological exploration technology to conduct a detailed assessment of the high-strength cohesive soil layer in the construction area to obtain soil physical and chemical property parameters;

[0009] Designing a muck conveying mechanism suitable for the characteristics of high-strength cohesive soil according to the obtained soil physical and chemical property parameters;

[0010] Installing a muck conveying mechanism in the shield machine and using a soil conditioner to improve the soil in front of the excavation face to reduce the viscosity and friction of the soil and obtain excavation face conditions;

[0011] Installing a sensor network at key parts of the shield machine, establishing a monitoring and feedback system, real-time monitoring the working state and data on changes in the surrounding environment, and dynamically adjusting the tunneling parameters according to the data to obtain shield machine working state data;

[0012] Based on the working state data of the shield machine, check, clean or replace the cutter head and cutters, and at the same time, conduct environmental protection treatment on the excavated muck to obtain the construction environment;

[0013] Conduct quality inspection and safety assessment to complete the shield tunnel construction process.

[0014] As a preferred embodiment of the shield tunnel construction method for preventing soil sticking in high-strength cohesive soil according to the present invention, wherein: the geological exploration technology is used to conduct a detailed assessment of the high-strength cohesive soil layer in the construction area to obtain the soil physical and chemical property parameters. The specific steps are as follows:

[0015] Select the electrical resistivity tomography (ERT) method for geological exploration;

[0016] The ERT generates a detailed formation structure image by measuring the resistivity differences at different depths underground, so as to accurately evaluate the distribution and characteristics of the high-strength cohesive soil;

[0017] Calculate the soil resistivity ρ at a specific depth and analyze the physical and chemical properties of the soil. The expression is:

[0018]

[0019] Wherein, V represents the applied voltage, I represents the current intensity passing through the electrode, and L represents the distance between the electrodes.

[0020] As a preferred embodiment of the shield tunnel construction method for preventing soil sticking in high-strength cohesive soil according to the present invention, wherein: the muck conveying mechanism includes:

[0021] A conveying box, a driving mechanism arranged outside the conveying box, and a discharge port opened on one side of the conveying box;

[0022] The driving mechanism includes a driving motor arranged outside the conveying box, a transmission component arranged at the output end of the driving motor, a connecting shaft arranged at the end of the transmission component, and a propeller fixedly installed on the surface of the connecting shaft;

[0023] A bearing seat that cooperates with the conveying box is arranged at the end of the connecting shaft.

[0024] As a preferred embodiment of the shield tunnel construction method for preventing soil sticking in high-strength cohesive soil according to the present invention, wherein: a muck conveying mechanism is arranged in the shield machine, and a soil conditioner is used to improve the soil in front of the excavation face to reduce the viscosity and friction of the soil to obtain the excavation face conditions. The specific steps are as follows:

[0025] Based on the geological exploration data, select a foaming agent with good lubrication and dispersion effects;

[0026] The optimal foam agent injection volume and injection speed formulas are introduced to achieve the best improvement effect, and the expression is:

[0027]

[0028] Among them, Q is the injection volume of the foam agent, V is the injection speed of the foam agent, W i is the initial water content of the soil, W t is the target water content, V s is the volume of the soil to be improved, T is the expected improvement time, and A is the cross-sectional area for spraying the foam agent;

[0029] Install the designed foam agent injection system on the shield machine;

[0030] According to the pre-calculated parameters Q and v, start the foam agent injection system and evenly spray the foam agent into the soil in front of the excavation face.

[0031] As an optimized scheme of the shield tunnel construction method for preventing soil sticks in high-strength cohesive soil described in the present invention, wherein: install a sensor network at key parts of the shield machine, establish a monitoring and feedback system, real-time monitor the working state and data on changes in the surrounding environment, and dynamically adjust the tunneling parameters according to the data to obtain the working state data of the shield machine. The specific steps are as follows:

[0032] Arrange sensors at the cutter head, propulsion system and tail seal of the shield machine;

[0033] Install pressure sensors on the cutter head to monitor the resistance encountered during cutting, and install torque and speed sensors near the propulsion cylinders to record the actual working conditions during propulsion;

[0034] Connect all sensors to the central control platform by wired or wireless means, which is responsible for collecting, processing and analyzing data from each sensor;

[0035] Design a software system for processing and analyzing data obtained from the sensor network;

[0036] Set reasonable upper and lower limit thresholds for each monitoring parameter according to safety standards;

[0037] Calculate the combination of tunneling parameters to ensure that the shield machine always operates in the best state. The expression is:

[0038] P opt = f(P current , ΔS, α);

[0039] Among them, P op t represents the thrust, torque or propulsion speed parameter at the optimal state after adjustment, P currentRepresents the parameter values of the thrust, torque, or propulsion speed currently in use. ΔS is the difference between the actual measured value and the ideal target value, and Δ is a comprehensive coefficient that takes into account factors such as soil properties and equipment performance;

[0040] Regularly check the performance of the monitoring and feedback system to ensure that all sensors are working properly and the data is accurate;

[0041] Save all data during each construction process, including the original parameters, adjusted parameters, and their corresponding construction effects.

[0042] As a preferred embodiment of the shield tunneling construction method for preventing earth rods in high-strength cohesive soil described in the present invention, wherein: based on the working state data of the shield machine, check, clean, or replace the cutter head and cutters, and at the same time perform environmental protection treatment on the excavated muck to obtain the construction environment. The specific steps are as follows:

[0043] Obtain the current working state data of the shield machine from the monitoring and feedback system, including the key parameters of thrust, torque, and propulsion speed;

[0044] Calculate the wear degree of the cutter head and cutters. The expression is:

[0045]

[0046] Wherein, W represents the wear condition of the cutter head and cutters, F current is the thrust value monitored in real time, F initial is the thrust value recorded when the cutter head and cutters are newly installed, T current is the torque value monitored in real time, T initial is the torque value recorded when the cutter head and cutters are newly installed, and β is a comprehensive coefficient that takes into account factors such as soil hardness and particle composition to correct the calculation result;

[0047] Based on the wear degree of the cutter head and cutters, determine whether cleaning or replacement is required;

[0048] Formulate a corresponding environmental protection treatment plan according to the characteristics of the excavated muck;

[0049] After transporting the muck to the designated location through the screw conveyor, process it according to the predetermined plan;

[0050] During the entire treatment process, continuously monitor the treatment effect of the muck to ensure that all treated muck meets the environmental protection requirements.

[0051] As a preferred embodiment of the shield tunneling construction method for preventing earth rods in high-strength cohesive soil described in the present invention, wherein: based on the wear degree of the cutter head and cutters, determine whether cleaning or replacement is required. The specific steps are as follows:

[0052] Set the wear thresholds for the cutter head and cutting tools;

[0053] When the wear level W exceeds the wear threshold, arrange for a downtime for a comprehensive inspection, and decide whether to clean or directly replace the cutter head and cutting tools according to the actual situation;

[0054] Use a high-pressure water gun or other professional tools to remove the soil and residues on the surface of the cutter head and cutting tools to ensure that they can continue to operate efficiently;

[0055] When it is found that the cutter head or cutting tools are severely worn and their performance cannot be restored by simple cleaning, new cutter head and cutting tools should be immediately replaced to avoid affecting the construction progress and quality.

[0056] As a preferred embodiment of the shield tunneling construction method for preventing soil sticking by high-strength cohesive soil according to the present invention, wherein: the quality inspection and safety assessment are carried out to complete the shield tunneling construction process, and the specific steps are as follows:

[0057] Calculate the actual strength of the tunnel lining structure, and the expression is:

[0058]

[0059] Wherein, σ is the actual strength of the lining structure, F is the force applied to the lining, and A is the stress area;

[0060] Use a laser scanner to obtain the data point cloud of the tunnel wall surface, and evaluate the flatness by calculating the surface deviation D;

[0061] Conduct a comprehensive leakage inspection of the tunnel, record the positions and flow rates L of the leakage points, and take repair measures;

[0062] Based on all the data collected during the construction period, conduct a comprehensive risk analysis, identify existing safety hazards such as ground settlement and tunnel deformation, and formulate corresponding countermeasures;

[0063] According to the risk analysis results, formulate a detailed emergency plan;

[0064] Summarize all the inspection and evaluation results and compile a detailed completion report;

[0065] The report includes the inspection data of all key indicators, the problems found and their solutions.

[0066] In a second aspect, the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and wherein: when the computer program is executed by the processor, any step of the shield tunneling construction method for preventing soil sticking by high-strength cohesive soil as described in the first aspect of the present invention is implemented.

[0067] In a third aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, any step of the shield tunneling construction method for generating a high-strength viscous soil anti-earth rod as described in the first aspect of the present invention is implemented.

[0068] The beneficial effects of the present invention are as follows: By using the resistivity imaging method ERT for geological exploration, accurate evaluation of the physical and chemical property parameters of the high-strength viscous soil layer in the construction area is achieved. This step can not only generate detailed formation structure images but also help identify the moisture distribution and water content changes in the soil, providing a scientific basis for subsequent designs. According to the physical and chemical property parameters of the soil obtained from geological exploration, a special muck conveying mechanism for high-strength viscous soil layers is designed, achieving the purpose of optimizing the equipment performance for specific soil conditions. By using materials with higher surface smoothness to manufacture the propeller and setting a discharge port to ensure smooth discharge of muck, the risk of blockage caused by adhesion is reduced. The soil in front of the excavation face is improved by using a soil conditioner, specifically a foaming agent with good lubrication and dispersion effects. By introducing the formula for the optimal foaming agent injection volume and injection speed, the stability of the excavation face is improved, not only reducing the resistance encountered during the shield machine propulsion but also significantly enhancing the excavation efficiency. Description of the Drawings

[0069] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0070] Figure 1 It is a flowchart of the shield tunneling construction method for generating a high-strength viscous soil anti-earth rod in Embodiment 1.

[0071] Figure 2 It is a schematic structural diagram of the delivery box of the shield tunneling construction method for generating a high-strength viscous soil anti-earth rod in Embodiment 1.

[0072] Figure 3 It is a schematic structural diagram of the drive mechanism of the shield tunneling construction method for generating a high-strength viscous soil anti-earth rod in Embodiment 1.

[0073] In the figure: 100, delivery box; 101, drive mechanism; 101a, drive motor; 101b, transmission component; 101c, connecting shaft; 101d, propeller; 102, discharge port. Detailed Embodiments

[0074] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings of the specification.

[0075] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Persons skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0076] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0077] Example 1, referring to Figure 1 、 Figure 2 and Figure 3 , is the first embodiment of the present invention. This embodiment provides a shield tunneling construction method for preventing earth rods in high-strength cohesive soil, including the following steps:

[0078] S1. Use geological exploration technology to conduct a detailed assessment of the high-strength cohesive soil layer in the construction area to obtain soil physical and chemical property parameters;

[0079] Furthermore, the electrical resistivity tomography (ERT) method is selected for geological exploration;

[0080] ERT generates a detailed subsurface structure image by measuring the resistivity differences at different depths underground, thereby accurately assessing the distribution and characteristics of high-strength cohesive soil;

[0081] Calculate the soil resistivity ρ at a specific depth and analyze the physical and chemical properties of the soil. The expression is:

[0082]

[0083] where V represents the applied voltage, I represents the current intensity passing through the electrode, and L represents the distance between the electrodes;

[0084] It should be noted that the electrical resistivity tomography (ERT) method can not only provide a high-precision subsurface structure image but also help identify the water distribution and water content changes in the soil. By analyzing the resistivity differences at different depths, the specific location and physical and chemical properties of the high-strength cohesive soil layer can be accurately evaluated, providing a scientific basis for setting subsequent construction parameters.

[0085] S2. Design a muck conveying mechanism suitable for the characteristics of high-strength cohesive soil according to the obtained soil physical and chemical property parameters;

[0086] Further, a conveying box 100, a driving mechanism 101 arranged outside the conveying box 100, and a discharging opening 102 opened on one side of the conveying box 100;

[0087] The driving mechanism 101 includes a driving motor 101a arranged outside the conveying box 100, a transmission component 101b arranged at the output end of the driving motor 101a, a connecting shaft 101c arranged at the end of the transmission component 101b, and a propeller 101d fixedly installed on the surface of the connecting shaft 101c;

[0088] A bearing seat that cooperates with the conveying box 100 is arranged at the end of the connecting shaft 101c;

[0089] It should be noted that the design of this muck conveying mechanism specifically considers the characteristics of highly cohesive soil. The propeller 101d is made of a material with a higher surface smoothness, and a discharging opening 102 is provided to ensure that the muck can be smoothly discharged, avoiding the risk of blockage or formation of soil sticks due to adhesion during the conveying process, thus ensuring the continuity and high efficiency of the construction process.

[0090] S3. Install a muck conveying mechanism in the shield machine, and use a soil conditioner to improve the soil in front of the excavation face to reduce the viscosity and friction of the soil and obtain the excavation face conditions;

[0091] Further, based on the geological exploration data, select a foaming agent with good lubrication and dispersion effects;

[0092] Introduce the formula for the optimal foaming agent injection volume and injection speed to achieve the best improvement effect. The expression is:

[0093]

[0094] Among them, Q is the injection volume of the foaming agent, V is the injection speed of the foaming agent, W i is the initial water content of the soil, W t is the target water content, V s is the volume of the soil to be improved, T is the expected improvement time, and A is the cross-sectional area for spraying the foaming agent;

[0095] Install the designed foaming agent injection system on the shield machine;

[0096] According to the pre-calculated parameters Q and v, start the foaming agent injection system and evenly spray the foaming agent onto the soil in front of the excavation face;

[0097] It should be noted that the use of the foam agent can not only effectively reduce the viscosity and friction of the soil, but also improve the stability of the excavation face, reduce the resistance encountered during the propulsion of the shield machine. According to the pre-calculated injection volume and injection speed of the foam agent, it can ensure that the foam agent evenly covers the soil in front of the entire excavation face, optimize the construction conditions, and improve the overall construction efficiency.

[0098] S4. Install a sensor network at the key parts of the shield machine, establish a monitoring and feedback system, real-time monitor the working state and the data of the surrounding environment changes, and dynamically adjust the tunneling parameters according to the data to obtain the working state data of the shield machine;

[0099] Furthermore, arrange sensors at the cutter head, propulsion system and tail seal of the shield machine;

[0100] Install pressure sensors on the cutter head to monitor the resistance encountered during the cutting process, and install torque and speed sensors near the propulsion cylinders to record the actual working conditions during the propulsion process;

[0101] Connect all sensors to the central control platform by wired or wireless means, which is responsible for collecting, processing and analyzing the data from each sensor;

[0102] Design a software system for processing and analyzing the data obtained from the sensor network;

[0103] Set reasonable upper and lower limit thresholds for each monitoring parameter according to safety standards;

[0104] Calculate the combination of tunneling parameters to ensure that the shield machine always operates in the best state. The expression is:

[0105] P opt =f(P current ,ΔS,α);

[0106] Among them, P opt represents the thrust, torque or propulsion speed parameter after adjustment to reach the optimal state, P current represents the current value of the thrust, torque or propulsion speed parameter used, ΔS is the difference between the actual measured value and the ideal target value, and α is a comprehensive coefficient considering factors such as soil properties and equipment performance;

[0107] Regularly check the performance of the monitoring and feedback system to ensure that all sensors are working properly and the data is accurate;

[0108] Save all the data during each construction process, including the original parameters, the adjusted parameters and their corresponding construction effects;

[0109] It should be noted that the establishment of the real-time monitoring and feedback system not only improves the safety and controllability of construction, but also enables the operator to dynamically adjust the tunneling parameters according to the actual data, such as thrust, torque, and propulsion speed. The precise control method based on data helps to prevent potential risks, ensure that the shield machine always operates in the best state, and the recorded data also provides an important reference for subsequent quality inspection.

[0110] S5. Based on the working state data of the shield machine, check, clean or replace the cutter head and cutters, and at the same time carry out environmental protection treatment on the excavated muck to obtain the construction environment;

[0111] Furthermore, obtain the current working state data of the shield machine from the monitoring and feedback system, including key parameters such as thrust, torque, and propulsion speed;

[0112] Calculate the wear degree of the cutter head and cutters, and the expression is:

[0113]

[0114] Among them, W represents the wear condition of the cutter head and cutters, F current is the thrust value monitored in real time, F initial is the thrust value recorded when the cutter head and cutters are newly installed, T current is the torque value monitored in real time, T initial is the torque value recorded when the cutter head and cutters are newly installed, and β is a comprehensive coefficient considering factors such as soil hardness and particle composition, which is used to correct the calculation result;

[0115] Based on the wear degree of the cutter head and cutters, judge whether cleaning or replacement is required;

[0116] Set the wear threshold of the cutter head and cutters;

[0117] When the wear degree W exceeds the wear threshold, arrange a shutdown time for a comprehensive inspection, and decide whether to clean or directly replace the cutter head and cutters according to the actual situation;

[0118] Use a high-pressure water gun or other professional tools to remove the soil and residues on the surface of the cutter head and cutters to ensure that it can continue to operate efficiently;

[0119] When it is found that the cutter head or cutters are severely worn and their performance cannot be restored by simple cleaning, new cutter head and cutters should be replaced immediately to avoid affecting the construction progress and quality;

[0120] Formulate a corresponding environmental protection treatment plan according to the characteristics of the excavated muck;

[0121] After transporting the muck to the designated location through the screw conveyor, carry out treatment according to the predetermined plan;

[0122] During the whole process, continuously monitor the effect of muck treatment to ensure that all treated muck meets the environmental protection requirements;

[0123] It should be noted that regularly checking, cleaning or replacing the cutter head and cutters is one of the key measures to ensure the continuous and efficient operation of the shield machine. By calculating the wear degree of the cutter head and cutters, potential problems can be detected in time and corresponding measures can be taken to prevent equipment failures caused by excessive wear. In addition, environmentally friendly treatment of the excavated muck can not only reduce environmental pollution, but also achieve effective utilization of resources, meeting the requirements of sustainable development.

[0124] S6. Conduct quality inspection and safety assessment to complete the shield tunnel construction process;

[0125] Furthermore, calculate the actual strength of the tunnel lining structure, and the expression is:

[0126]

[0127] Among them, σ is the actual strength of the lining structure, F is the force applied to the lining, and A is the stress area;

[0128] Use a laser scanner to obtain the data point cloud of the tunnel wall surface, and evaluate the flatness by calculating the surface deviation D;

[0129] Conduct a comprehensive leakage inspection of the tunnel, record the positions and leakage rates L of the leakage points, and take repair measures;

[0130] Based on all the data collected during the construction period, conduct a comprehensive risk analysis, identify existing potential safety hazards such as ground settlement and tunnel deformation, and formulate corresponding countermeasures;

[0131] According to the risk analysis results, formulate a detailed emergency plan;

[0132] Summarize all the inspection and assessment results and compile a detailed completion report;

[0133] The report includes the inspection data of all key indicators, the problems found and their solutions;

[0134] It should be noted that quality inspection and safety assessment are not only important links for project completion, but also the basis for ensuring the long-term stable operation of the tunnel. By comprehensively inspecting the strength of the tunnel lining structure, the flatness of the wall surface and the leakage situation, the engineering quality can be accurately evaluated whether it meets the design standards. Combining all the data collected during the construction period for a comprehensive risk analysis and formulating a detailed emergency plan to ensure a rapid response in any situation and maximize the safety and reliability of the project.

[0135] This embodiment also provides a computer device, which is applicable to the case of the shield tunneling construction method for preventing soil sticks in highly cohesive soil, and includes: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement the shield tunneling construction method for preventing soil sticks in highly cohesive soil as proposed in the above embodiment.

[0136] The computer device may be a terminal. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner. The wireless manner can be implemented through WI-FI, a carrier network, NFC (Near Field Communication), or other technologies. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device may be a touch layer covering the display screen, or a button, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, touchpad, or mouse, etc.

[0137] This embodiment also provides a storage medium, on which a computer program is stored. When the program is executed by a processor, it implements the shield tunneling construction method for preventing soil sticks in highly cohesive soil as proposed in the above embodiment; the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including static random access memory, electrically erasable programmable read-only memory, erasable programmable read-only memory, programmable read-only memory, read-only memory, magnetic memory, flash memory, a magnetic disk, or an optical disc.

[0138] In summary, the present invention uses the Electrical Resistivity Tomography (ERT) method for geological exploration, achieving an accurate assessment of the physical and chemical property parameters of the high-strength cohesive soil layer in the construction area. The steps can not only generate detailed images of the stratum structure but also help identify the moisture distribution and water content changes in the soil, providing a scientific basis for subsequent designs. Based on the physical and chemical property parameters of the soil obtained from geological exploration, a muck conveying mechanism specifically designed for high-strength cohesive soil layers is developed, achieving the purpose of optimizing the equipment performance for specific soil conditions. By using materials with a higher surface smoothness to manufacture the propeller 101d and setting up the discharge port 102 to ensure the smooth discharge of muck, the risk of blockage caused by adhesion is reduced. The soil in front of the excavation face is improved using a soil conditioner, specifically a foaming agent with good lubricating and dispersing effects. By introducing the formula for the optimal foaming agent injection volume and injection speed, the stability of the excavation face is improved, not only reducing the resistance encountered during the shield machine propulsion but also significantly enhancing the excavation efficiency.

[0139] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. Shield tunneling construction method for preventing earth sticks from high-strength cohesive soil, characterized in that: Including: Using geological exploration technology to conduct a detailed assessment of the high-strength cohesive soil layer in the construction area to obtain soil physical and chemical property parameters; Designing a muck conveying mechanism suitable for the characteristics of high-strength cohesive soil according to the obtained soil physical and chemical property parameters; Installing a muck conveying mechanism in the shield machine, and using a soil conditioner to improve the soil in front of the excavation face to reduce the viscosity and friction of the soil, obtaining the excavation face conditions; Installing a sensor network at key parts of the shield machine, establishing a monitoring and feedback system, real-time monitoring the working state and surrounding environment change data, and dynamically adjusting the tunneling parameters according to the data to obtain the shield machine working state data; Based on the shield machine working state data, checking and cleaning or replacing the cutter head and cutters, and at the same time carrying out environmental protection treatment on the excavated muck to obtain the construction environment; Conducting quality inspection and safety assessment to complete the shield tunnel construction process.

2. The shield tunneling construction method using the high-strength viscous soil anti-soil rod as described in claim 1, characterized in that: The step of using geological exploration technology to conduct a detailed assessment of the high-strength cohesive soil layer in the construction area to obtain soil physical and chemical property parameters is as follows: Selecting the electrical resistivity tomography (ERT) method for geological exploration; The ERT generates a detailed stratigraphic structure image by measuring the resistivity differences at different depths underground, so as to accurately evaluate the distribution and characteristics of high-strength cohesive soil; Calculating the soil resistivity ρ at a specific depth and analyzing the physical and chemical properties of the soil. The expression is: Where, V represents the applied voltage, I represents the current intensity passing through the electrode, and L represents the distance between the electrodes.

3. The shield tunneling construction method for preventing earth rods in high-strength cohesive soil according to claim 2, characterized in that: The muck conveying mechanism includes: A conveying box (100), a driving mechanism (101) arranged outside the conveying box (100), and a discharge port (102) opened on one side of the conveying box (100); The driving mechanism (101) includes a driving motor (101a) arranged outside the conveying box (100), a transmission component (101b) arranged at the output end of the driving motor (101a), a connecting shaft (101c) arranged at the end of the transmission component (101b), and a propeller (101d) fixedly installed on the surface of the connecting shaft (101c); A bearing seat that cooperates with the conveying box (100) is arranged at the end of the connecting shaft (101c).

4. The shield tunneling construction method for preventing earth rods from high-strength cohesive soil according to claim 3, characterized in that: The step of installing a muck conveying mechanism in the shield machine, and using a soil conditioner to improve the soil in front of the excavation face to reduce the viscosity and friction of the soil, obtaining the excavation face conditions is as follows: Based on the geological exploration data, selecting a foaming agent with good lubrication and dispersion effects; Introducing the formula for the optimal foaming agent injection amount and injection speed to achieve the best improvement effect. The expression is: Among them, Q is the injection volume of the foaming agent, V is the injection speed of the foaming agent, W i is the initial water content of the soil, W t is the target water content, V s is the volume of the soil to be improved, T is the expected improvement time, and A is the cross-sectional area for injecting the foaming agent; Installing the designed foaming agent injection system on the shield machine; According to the pre-calculated parameters Q and v, starting the foaming agent injection system and spraying the foaming agent evenly into the soil in front of the excavation face.

5. The shield tunneling construction method for preventing earth rods from being generated by high-strength cohesive soil according to claim 4, characterized in that: The step of installing a sensor network at key parts of the shield machine, establishing a monitoring and feedback system, real-time monitoring the working state and surrounding environment change data, and dynamically adjusting the tunneling parameters according to the data to obtain the shield machine working state data is as follows: Arranging sensors at the cutter head, propulsion system and tail seal of the shield machine; Install pressure sensors on the cutter head to monitor the resistance encountered during cutting, and install torque and speed sensors near the propulsion cylinders to record the actual working conditions during propulsion; Connect all sensors to the central control platform by wired or wireless means, which is responsible for collecting, processing, and analyzing data from each sensor; Design a software system for processing and analyzing data obtained from the sensor network; Set reasonable upper and lower threshold values for each monitored parameter according to safety standards; Calculate the combination of tunneling parameters to ensure that the shield machine always operates in the best state. The expression is: P opt = f(P current , ΔS, α); Among them, P opt represents the thrust, torque or propulsion speed parameter at the optimal state after adjustment, and P current represents the value of the thrust, torque or propulsion speed parameter currently in use. ΔS is the difference between the actual measured value and the ideal target value, and α is a comprehensive coefficient considering factors such as soil properties and equipment performance; Regularly check the performance of the monitoring and feedback system to ensure that all sensors are working properly and the data is accurate; Save all data during each construction process, including original parameters, adjusted parameters, and their corresponding construction effects.

6. The shield tunneling construction method for preventing earth rods from being generated by high-strength cohesive soil according to claim 5, characterized in that: Based on the working state data of the shield machine, check, clean, or replace the cutter head and cutters, and at the same time carry out environmental protection treatment on the excavated muck to obtain the construction environment. The specific steps are as follows: Obtain the current working state data of the shield machine from the monitoring and feedback system, including key parameters such as thrust, torque, and propulsion speed; Calculate the wear degree of the cutter head and cutters. The expression is: Among them, W represents the wear condition of the cutter head and cutters, and F current is the thrust value monitored in real time, and F initial is the thrust value recorded when the cutter head and cutters are newly installed, and T current is the torque value monitored in real time, and T initial is the torque value recorded when the cutter head and cutters are newly installed. β is a comprehensive coefficient considering factors such as soil hardness and particle composition, and is used to correct the calculation results; Based on the wear degree of the cutter head and cutters, determine whether cleaning or replacement is required; Formulate corresponding environmental protection treatment plans according to the characteristics of the excavated muck; After transporting the muck to the designated location through the screw conveyor, process it according to the predetermined plan; During the entire treatment process, continuously monitor the treatment effect of the muck to ensure that all treated muck meets environmental protection requirements.

7. The shield tunneling construction method for preventing soil bars from high-strength cohesive soil according to claim 6, characterized in that: Based on the wear degree of the cutter head and cutters, determine whether cleaning or replacement is required. The specific steps are as follows: Set the wear threshold values of the cutter head and cutters When the wear degree W exceeds the wear threshold, arrange downtime for a comprehensive inspection, and decide whether to clean or directly replace the cutter head and cutters according to the actual situation; Use a high-pressure water gun or other professional tools to remove the soil and residues on the surface of the cutter head and cutters to ensure that they can continue to operate efficiently; When it is found that the cutter head or cutters are severely worn and their performance cannot be restored through simple cleaning, new cutter head and cutters should be immediately replaced to avoid affecting the construction progress and quality.

8. The shield tunneling construction method for preventing soil rods in high-strength viscous soil as claimed in claim 7, characterized in that: Perform quality inspection and safety assessment to complete the shield tunnel construction process. The specific steps are as follows: Calculate the actual strength of the tunnel lining structure. The expression is: Where, σ is the actual strength of the lining structure, F is the force applied to the lining, and A is the force-bearing area; Use a laser scanner to obtain the data point cloud of the tunnel wall surface, and evaluate the flatness by calculating the surface deviation D; Conduct a comprehensive leakage inspection of the tunnel, record the location and flow rate L of the leakage points, and take repair measures; Based on all data collected during construction, conduct a comprehensive risk analysis, identify existing safety hazards such as ground settlement and tunnel deformation, and formulate corresponding countermeasures; Formulate a detailed emergency plan according to the risk analysis results; Summarize all inspection and assessment results and compile a detailed completion report; The report includes the inspection data of all key indicators, the problems found, and their solutions.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that: When the processor executes the computer program, the steps of the shield tunneling construction method for preventing soil sticking of high-strength cohesive soil according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, the steps of the shield tunneling construction method for preventing soil sticking of high-strength cohesive soil according to any one of claims 1 to 7 are implemented.

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