Construction process, system and computer program product for correcting deformation of a shield tunnel

Abstract

This application provides a construction process, system, and computer program product for shield tunnel deformation correction. The construction process includes: obtaining the current grouting parameters of the target segment when correction is required; calculating the first correction amount and the second correction amount of the target segment based on the current grouting parameters, where the first correction amount is the total vertical correction amount of the segment and the second correction amount is the lateral convergence correction amount of the segment itself during grouting; adjusting the current grouting parameters of the target segment based on the first correction amount, the target correction amount corresponding to the first correction amount, the second correction amount, and the target correction amount corresponding to the second correction amount, until the first correction amount of the target segment equals the target correction amount corresponding to the first correction amount and the second correction amount of the target segment equals the target correction amount corresponding to the second correction amount, thus solving the problem of poor reinforcement effect caused by low correction accuracy.

Description

Technical Field

[0001] This application relates to the field of maintenance technology for shield tunnels in rail transit, and more specifically, to a construction process, system, computer-readable storage medium, and computer program product for shield tunnel deformation correction. Background Technology

[0002] After the completion of subway tunnel construction, reinforcement is required to improve the structural stability of shield tunnels to address excessive settlement and convergence deformation. However, the deformation of existing shield tunnels is generally difficult to manage, and methods such as micro-disturbance grouting and steel ring reinforcement are commonly used. These methods have fundamental drawbacks, including complex construction procedures, low construction efficiency, and poor reinforcement effects of the completed tunnel reinforcement structures. Summary of the Invention

[0003] The main objective of this application is to provide a construction process, system, computer-readable storage medium, and computer program product for shield tunnel deformation correction, so as to at least solve the problem of poor reinforcement effect caused by low correction accuracy in the prior art.

[0004] To achieve the above objectives, according to one aspect of this application, a construction process for deformation correction of a shield tunnel is provided, comprising: when a target segment needs correction, obtaining the current grouting parameters of the target segment, the current grouting parameters including grouting pressure, grouting volume, return grout volume, and effective grouting time; calculating a first correction amount and a second correction amount of the target segment based on the current grouting parameters, the first correction amount being the total vertical correction amount of the segment, and the second correction amount being the lateral convergence correction amount of the segment itself during grouting; adjusting the current grouting parameters of the target segment based on the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment is equal to the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment is equal to the target correction amount corresponding to the second correction amount of the target segment.

[0005] Optionally, if the target segment needs correction, before obtaining the current grouting parameters of the target segment, the construction process further includes: determining evaluation indicators based on pre-construction monitoring data, including segment displacement, convergence value, and stress; the evaluation indicators including crack width, misalignment, and convergence value; inputting each of the evaluation indicators of the target segment into the corresponding membership function to obtain the membership degree of each evaluation indicator; determining the weight of the evaluation indicators using the analytic hierarchy process (AHP); weighting the membership degrees of the evaluation indicators using the weights of the evaluation indicators to obtain a final score; and determining that the target segment needs correction if the final score is less than a predetermined score.

[0006] Optionally, calculating the first and second correction amounts of the target segment based on the current grouting parameters includes: using the formula for the first correction amount. The first foundation correction amount of the target segment and the first foundation correction amounts of other segments are calculated, where δ is the first foundation correction amount, c is the constraint influence coefficient of other segments next to the target segment on the target segment, P is the grouting pressure, Q1 is the grouting volume, Q0 is the return grout volume, k is the return grouting pressure coefficient, t is the effective grouting time, A1 is the effective area per meter of the correction pressure acting on the reinforced body of the target segment, A2 is the effective area per meter of the soil on the side of the shield tunnel opposite to the pile, and K... v The soil reaction coefficient is denoted by , and e is the compaction coefficient between the segment and the soil; the second correction formula is used. The second foundation correction amount for the target segment and the second foundation correction amounts for the other segments are calculated, where S is the second foundation correction amount, ν is the Poisson's ratio of the concrete of the segment, R = r + b / 2, r is the inner diameter of the segment, b is the horizontal thickness of the segment, and E... c Let f be the elastic modulus of the concrete of the segment, and f be the stiffness reduction factor of the segment. The first foundation correction amount of the target segment is corrected by the first foundation correction amount of the other segments to obtain the first correction amount of the target segment. The second foundation correction amount of the target segment is corrected by the second foundation correction amount of the other segments to obtain the second correction amount of the target segment.

[0007] Optionally, adjusting the current grouting parameters of the target segment according to the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment equals the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment equals the target correction amount corresponding to the second correction amount of the target segment, includes: using a fuzzy PID algorithm to calculate the adjustment amount of each of the current grouting parameters for the first correction amount, the target correction amount corresponding to the first correction amount, the second correction amount, and the target correction amount corresponding to the second correction amount; adjusting the current grouting parameters of the target segment according to the adjustment amount of each of the current grouting parameters and updating the first correction amount and the second correction amount, until the first correction amount equals the target correction amount corresponding to the first correction amount and the second correction amount equals the target correction amount corresponding to the second correction amount.

[0008] Optionally, the construction process further includes: obtaining the minimum and maximum values ​​of the return grout pressure; when the return grout pressure reaches the minimum value after grouting begins, controlling the electric control valve to open for return grouting; when the return grout pressure is less than the minimum value or greater than the maximum value, adjusting the opening of the electric control valve so that the return grout pressure is greater than or equal to the minimum value and less than or equal to the maximum value; and stopping grouting when the grouting pressure is greater than the maximum grouting pressure of the segment, wherein the maximum grouting pressure of the segment is less than the ultimate bearing pressure of the target segment.

[0009] Optionally, before grouting begins, the construction process further includes: obtaining the coordinates of the end of the grouting rod, the center coordinates of the grouting hole, the deflection angle of the grouting rod, and the length of the grouting rod; calculating the deviation between the coordinates of the end of the grouting rod and the center coordinates of the grouting hole to obtain a correction amount; calculating the eccentricity based on the deflection angle of the grouting rod and the length of the grouting rod; and controlling the robotic arm to adjust the position of the end of the grouting rod until the correction amount is less than or equal to the maximum allowable comprehensive deviation, and the eccentricity is less than or equal to the maximum eccentricity.

[0010] Optionally, before determining the evaluation indicators based on the pre-construction monitoring data, the construction process includes: acquiring the pre-construction monitoring data for each segment; issuing an early warning for the segment corresponding to the pre-construction monitoring data that exceeds the limit if the pre-construction monitoring data exceeds the limit; and identifying the segment that receives the early warning as the target segment.

[0011] According to another aspect of this application, a shield tunnel deformation correction system is provided, comprising: a first acquisition unit, configured to acquire the current grouting parameters of the target segment when correction is required, the current grouting parameters including grouting pressure, grouting volume, return grout volume, and effective grouting time; a first calculation unit, configured to calculate a first correction amount and a second correction amount of the target segment based on the current grouting parameters, the first correction amount being the total vertical correction amount of the segment, and the second correction amount being the lateral convergence correction amount of the segment itself during grouting; and a first adjustment unit, configured to adjust the current grouting parameters of the target segment based on the first correction amount of the target segment, a target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and a target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment is equal to the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment is equal to the target correction amount corresponding to the second correction amount of the target segment.

[0012] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform any of the construction processes described above.

[0013] According to another aspect of this application, a computer program product is provided, including a computer program that, when executed by a processor, implements any of the construction processes described herein.

[0014] By applying the technical solution of this application, in the above-mentioned construction process for deformation correction of shield tunnels, the real-time correction amount of the target segment, namely the first correction amount and the second correction amount, is calculated by the current grouting parameters. The current grouting parameters can then be adjusted in real time so that the real-time correction amount of the target segment gradually approaches the corresponding target correction amount, until the first correction amount equals the target correction amount corresponding to the first correction amount and the second correction amount equals the target correction amount corresponding to the second correction amount, thus completing the grouting correction. This avoids over-correction or under-correction leading to poor reinforcement effect and solves the problem of poor reinforcement effect caused by low correction accuracy in the prior art. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 A hardware structure block diagram of a mobile terminal for performing a construction process of shield tunnel deformation correction according to an embodiment of this application is shown.

[0017] Figure 2 A schematic flowchart of a construction process for deformation correction of a shield tunnel according to an embodiment of this application is shown.

[0018] Figure 3 A schematic diagram of a cavity reinforcement method according to an embodiment of this application is shown;

[0019] Figure 4 A schematic diagram of another cavity reinforcement method provided according to an embodiment of this application is shown;

[0020] Figure 5 A schematic diagram of another cavity reinforcement method provided according to an embodiment of this application is shown;

[0021] Figure 6 A diagram illustrating an automated slurry return process according to an embodiment of this application is shown;

[0022] Figure 7 A schematic diagram of a grouting system according to an embodiment of this application is shown;

[0023] Figure 8 A schematic diagram of a grouting system according to an embodiment of this application is shown;

[0024] Figure 9 A schematic diagram of a blowout preventer provided according to an embodiment of this application is shown;

[0025] Figure 10 A flowchart is shown for another construction process for shield tunnel deformation correction according to an embodiment of this application;

[0026] Figure 11 A flowchart of a multi-point linkage mechanism provided according to an embodiment of this application is shown;

[0027] Figure 12 A schematic diagram of a multi-point linkage mechanism provided according to an embodiment of this application is shown;

[0028] Figure 13 A structural block diagram of a shield tunnel deformation correction system provided according to an embodiment of this application is shown.

[0029] The above figures include the following reference numerals:

[0030] 102. Processor; 104. Memory; 106. Transmission equipment; 108. Input / output equipment; 1. First grouting machine; 2. Sealed mud return tank; 3. Cement silo; 4. Mud mixer; 5. Grouting equipment; 6. Intelligent control system; 7. Second grouting machine; 8. Rail trolley; 1.1. Laser alignment device; 1.2. Grouting rod; 1.3. Grouting drilling equipment; 1.4. First reflecting prism; 9.1. Electric control valve; 9.2. Pressure sensor; 9.3. Second reflecting prism; 9.4. Grouting rod alignment sensor; 9.5. Grouting blowout prevention device; 9.6. Grouting sealing device. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] As described in the background section, the low correction accuracy in the prior art leads to poor reinforcement effect. To solve this technical problem, the embodiments of this application provide a construction process, system, computer-readable storage medium, and computer program product for shield tunnel deformation correction.

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0036] The construction process embodiments provided in this application can be executed on mobile terminals, computer terminals, or similar computing devices. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a construction process of shield tunnel deformation correction according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0037] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the construction process of shield tunnel deformation correction in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby realizing the aforementioned construction process. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one instance, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0038] This embodiment provides a construction process for shield tunnel deformation correction that runs on a mobile terminal, computer terminal, or similar computing device. It is typically applied to the control end of a grouting system. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0039] Figure 2 This is a flowchart of the construction process for shield tunnel deformation correction according to an embodiment of this application. Figure 2 As shown, the construction process includes the following steps:

[0040] Step S201: When the target segment needs to be corrected, obtain the current grouting parameters of the target segment. The current grouting parameters include grouting pressure, grouting volume, return grout volume, and effective grouting time.

[0041] Specifically, if the target segment needs to be corrected, grouting correction can be performed on the target segment. During the grouting process, the current grouting parameters of the target segment are obtained so as to calculate the correction amount of the target segment in real time.

[0042] Step S202: Calculate the first correction amount and the second correction amount of the target segment based on the current grouting parameters. The first correction amount is the total correction amount in the vertical direction of the segment, and the second correction amount is the lateral convergence correction amount of the segment itself during grouting.

[0043] Specifically, based on the current grouting parameters, the first correction amount of the target segment in the vertical direction and the second correction amount of the target segment in the horizontal convergence direction are calculated, so as to realize real-time monitoring of the correction amount of the target segment in the horizontal and vertical directions during the grouting process.

[0044] Step S203: Adjust the current grouting parameters of the target segment according to the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment is equal to the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment is equal to the target correction amount corresponding to the second correction amount of the target segment.

[0045] Specifically, the actual monitored correction amount of the target segment is compared with the target correction amount to adjust the current grouting parameters so that the actual monitored correction amount gradually approaches the target correction amount until the correction is completed. For example, when the difference between the actual monitored correction amount and the target correction amount is large, the current grouting parameters such as the grouting pressure are increased to speed up the correction. When the difference between the actual monitored correction amount and the target correction amount is small, the current grouting parameters such as the grouting pressure are decreased to slow down the correction and avoid overcorrection.

[0046] In this embodiment, the real-time correction amount of the target segment, namely the first correction amount and the second correction amount, is calculated by the current grouting parameters. The current grouting parameters can then be adjusted in real time so that the real-time correction amount of the target segment gradually approaches the corresponding target correction amount, until the first correction amount equals the target correction amount corresponding to the first correction amount and the second correction amount equals the target correction amount corresponding to the second correction amount. This completes the grouting correction and avoids over-correction or under-correction that leads to poor reinforcement effect. This solves the problem of poor reinforcement effect caused by low correction accuracy in the prior art.

[0047] To determine the construction area, in one optional implementation, if the target segment needs correction, before obtaining the current grouting parameters of the target segment, the construction process further includes:

[0048] Step S301: Determine the evaluation indicators based on the pre-construction monitoring data, which includes segment displacement, convergence value and stress, and the evaluation indicators include crack width, misalignment and convergence value.

[0049] Step S302: Input each of the above evaluation indicators of the target pipe segment into the corresponding membership function to obtain the membership degree of each of the above evaluation indicators.

[0050] Step S303: Use the analytic hierarchy process (AHP) to determine the weights of the above evaluation indicators;

[0051] Step S304: The membership degree of the above evaluation indicators is weighted and averaged using the weights of the above evaluation indicators to obtain the final score.

[0052] Step S305: If the final score is less than the predetermined score, it is determined that the target segment needs to be corrected.

[0053] In the above implementation, based on pre-construction monitoring data, a multi-level fuzzy comprehensive evaluation model is used for automatic assessment. The model integrates tunnel design parameters and geological survey reports, and automatically divides evaluation units according to segment rings and construction methods. The Analytic Hierarchy Process (AHP) is used to assign weights to indicators such as crack width, misalignment, and convergence value. The model calculates the final score S (out of 100) and assigns a grade: S≥90 Excellent, 75≤S<90 Good, S<75 Needs Correction. This grade serves as the basis for whether to initiate correction construction, thus identifying the construction areas that need correction.

[0054] To improve the accuracy of real-time correction calculation, in one optional implementation, step S202 includes:

[0055] Step S2021, adopt the first correction formula The first foundation correction amount of the target segment and the first foundation correction amount of other segments were calculated, where δ is the first foundation correction amount, c is the constraint influence coefficient of other segments next to the target segment on the target segment, P is the grouting pressure, Q1 is the grouting volume, Q0 is the return grout volume, k is the return grouting pressure coefficient, t is the effective grouting time, A1 is the effective area per meter of the correction pressure acting on the reinforced body of the target segment, A2 is the effective area per meter of the soil on the side of the shield tunnel opposite to the pile, and K... v denoted as the soil reaction coefficient next to the aforementioned pipe segment, and e is the compaction coefficient between the aforementioned pipe segment and the soil.

[0056] Step S2022, adopt the second correction formula The second foundation correction amount for the target segment and the second foundation correction amounts for the other segments were calculated, where S is the second foundation correction amount, ν is the Poisson's ratio of the concrete of the segment, R = r + b / 2, r is the inner diameter of the segment, b is the horizontal thickness of the segment, and E... c Let f be the elastic modulus of the concrete of the aforementioned pipe segment, and f be the stiffness reduction factor of the aforementioned pipe segment.

[0057] Step S2023: The first basic correction amount of the target tube segment is corrected by using the first basic correction amount of the other tube segments to obtain the first correction amount of the target tube segment; the second basic correction amount of the target tube segment is corrected by using the second basic correction amount of the other tube segments to obtain the second correction amount of the target tube segment.

[0058] In the above embodiments, ΔP is the correction pressure on the segment. Where β is the cement slurry pressure transmission efficiency coefficient. First basic correction amount The first basic correction amount of the target segment and the first basic correction amount of other segments can be calculated using the first correction amount formula. That is, the correction amount generated in the vertical direction by the grouting correction of the target segment and other segments themselves. Similarly, the second correction amount formula can be used to calculate the correction amount. The second basic correction amount of the target segment and the second basic correction amount of the other segments were calculated, that is, the correction amount generated laterally by the grouting correction of the target segment and other segments themselves, and the first correction amount of the target segment. ,in, δ i δ is the first foundation correction amount in the vertical direction when grouting the target segment i. j δ is the first foundation correction amount in the vertical direction when grouting other segments j. ij The vertical correction amount for the target segment i when grouting other segments j. , where L ji Let Li be the distance between other segments j and the target segment i, and L0 be the axial length of a single segment. The first basic correction amount of the target segment can be obtained by correcting the first basic correction amount of the target segment using the first basic correction amount of the other segments. Similarly, the second correction amount of the target segment... ,in, S i S is the second foundation correction amount in the vertical direction during grouting of target segment i. j S is the second foundation correction amount in the vertical direction when grouting other segments j. ij The vertical correction amount for the target segment i when grouting other segments j. , where L ji Let Li be the distance between other pipe segments j and the target pipe segment i, and L0 be the axial length of a single pipe segment. The second correction amount of the target pipe segment can be obtained by correcting the second basic correction amount of the other pipe segments with the second basic correction amount of the target pipe segment. This takes into account the mutual influence between pipe segments during grouting, greatly improving the accuracy of the correction amount calculation. For example, as... Figure 3 , Figure 4 and Figure 5 As shown, multiple segments can be grouted simultaneously, and during grouting, the segments affect each other's correction amount.

[0059] Of course, partial segment correction can be used for verification, and the corresponding parameters, such as k, can be optimized to make the calculation results of the formula closer to the actual correction amount and reduce the error.

[0060] To achieve intelligent adjustment of grouting parameters for adaptive correction, in one optional embodiment, step S203 includes:

[0061] Step S2031: The fuzzy PID algorithm is used to calculate the adjustment amount of each of the above current grouting parameters by calculating the first correction amount, the target correction amount corresponding to the first correction amount, the second correction amount, and the target correction amount corresponding to the second correction amount.

[0062] Step S2032: Adjust the current grouting parameters of the target segment according to the adjustment amount of each of the current grouting parameters, and update the first correction amount and the second correction amount until the first correction amount is equal to the target correction amount corresponding to the first correction amount and the second correction amount is equal to the target correction amount corresponding to the second correction amount.

[0063] In the above implementation, the PID controller calculates the control quantity using three parts: proportional (P), integral (I), and derivative (D). Fuzzy control is an empirical rule-based control that processes system input and output through "if-then" rules, without relying on a precise mathematical model. The fuzzy PID algorithm uses fuzzy logic to dynamically adjust the PID parameters, enabling the PID controller to adaptively adjust under different deviations and rates of change. The core of the control system consists of an industrial-grade PLC (Programmable Logic Controller) and an industrial control computer (operator station). The PLC is responsible for high-speed acquisition of data from all sensors (pressure, flow, displacement) and executing the fuzzy PID algorithm to adjust the parameters of each grouting head in real time. The industrial control computer provides a visual human-machine interface (HMI) to display the 3D tunnel model, real-time grouting parameter curves, equipment status, and allows engineers to set and adjust grouting strategies.

[0064] To achieve safe control of grouting pressure and return grouting pressure, in one optional embodiment, the above construction process further includes:

[0065] Step S401: Obtain the minimum and maximum values ​​of the return pressure;

[0066] Step S402: When the grout return pressure reaches the minimum value after grouting begins, the electric control valve is opened to perform grout return.

[0067] Step S403: When the return pressure is less than the minimum return pressure or the return pressure is greater than the maximum return pressure, adjust the opening of the electric control valve so that the return pressure is greater than or equal to the minimum return pressure and less than or equal to the maximum return pressure.

[0068] Step S404: When the grouting pressure is greater than the maximum grouting pressure of the segment, stop grouting. The maximum grouting pressure of the segment is less than the ultimate pressure that the target segment can withstand.

[0069] In the above embodiments, such as Figure 6As shown, the slurry recovery is controlled by an electric control valve and pressure sensor installed in the blowout preventer. The electric control valve and pressure sensor are connected to the intelligent control system. During construction, a maximum and minimum pressure control value is preset in the intelligent control system. The pressure status is transmitted to the intelligent control system through the slurry return pressure sensor. The intelligent control system opens the electric control valve to return the slurry based on whether the minimum pressure value is reached. During the slurry return process, the status of the tunnel segments is monitored. If abnormal changes occur in the tunnel segment correction, such as too fast or too slow, the size of the electric control valve can be adjusted through the intelligent control system. If the slurry return pressure is too high or too low, exceeding the preset pressure control value, the pressure sensor will feed back a signal to the intelligent control system, ensuring that the grouting process is always within the preset structural safety response range. The intelligent control system will issue an alarm, realizing automated control of the slurry return volume and pressure, reducing human error and ensuring the grouting effect. Once the instantaneous value of the grouting pressure exceeds 85% of the tunnel segment's withstand limit (which can be set), the system immediately triggers "pressure fuse", and the grouting pump stops instantly to prevent damage to the tunnel segment structure.

[0070] To achieve automated and precise hole alignment, in one optional implementation, the above construction process further includes the following before grouting begins:

[0071] Step S501: Obtain the coordinates of the end of the grouting rod, the center coordinates of the grouting hole, the deflection angle of the grouting rod, and the length of the grouting rod;

[0072] Step S502: Calculate the deviation between the coordinates of the end of the grouting rod and the center coordinates of the grouting hole to obtain the correction amount, and calculate the eccentricity based on the deflection angle and length of the grouting rod.

[0073] Step S503: Control the robotic arm to adjust the position and orientation of the end of the grouting rod until the correction amount is less than or equal to the maximum allowable comprehensive deviation, and the eccentricity is less than or equal to the maximum eccentricity.

[0074] In the above embodiment, when the track trolley moves to the vicinity of the target segment, the robotic arm initially extends and uses a high-precision laser rangefinder to project a laser beam (such as the OT-7000 automatic alignment system with an accuracy of ±0.002 inches) onto the annular prism marker integrated on the outer periphery of the blowout preventer. The robotic arm's posture is manually coarsely adjusted so that the laser spot coincides with the center of the prism (deviation threshold <5mm), forming a reference light plane. The laser wavelength is 635nm, the beam diameter is 8~12mm, and the working distance can reach 100m, achieving non-contact initial positioning. Information is monitored in real time by tilt and displacement sensors installed at the end of the grouting rod to measure the grouting rod's deflection angle (Δθ) and three-dimensional coordinates (x, y, z). The intelligent control system calculates the correction amount based on the spatial geometric model. Where ε is the maximum permissible comprehensive deviation, sensor data is transmitted to the intelligent control system via wireless communication (such as the Zigbee protocol), dynamically calculating the deviation between the grouting rod axis and the grouting hole axis, and outputting correction commands to the robotic arm servo motor. The control system drives the robotic arm to make fine adjustments, and through iterative feedback control, the deviation converges to within the threshold. When the grouting rod penetrates the segment to a set length (e.g., 3m), the automatic rod connection mechanism (composed of a hydraulically driven chuck and a rotary docking module) pushes the new rod to the docking position. The hydraulic chuck (with a floating design that allows for ±2° adaptive skew angle) precisely aligns the rod thread, and the rotary module completes the screwing with a constant torque (set according to the rod diameter). Parameters such as grouting rod vibration and sealing pressure are continuously monitored. If deviation exceeds the limit or sealing failure is detected, grouting is immediately paused and an audible and visual alarm is triggered. The control interface displays a three-dimensional deviation curve and correction log, supporting manual intervention. The docking process must meet the eccentricity constraint: d n Using the nominal diameter of the grouting rod, the drill rod can be quickly and accurately aligned with the hole.

[0075] To reduce downtime, in one optional implementation, before determining evaluation indicators based on pre-construction monitoring data, the above construction process includes:

[0076] Step S601: Obtain the aforementioned pre-construction monitoring data for each tunnel segment;

[0077] Step S602: If the above-mentioned pre-construction monitoring data exceeds the limit, issue an early warning for the above-mentioned pipe segment corresponding to the above-mentioned pre-construction monitoring data that exceeds the limit;

[0078] Step S603: The aforementioned tunnel segment that was warned is identified as the target tunnel segment.

[0079] In the above implementation, the platform homepage integrates all key information, summarizes historical tunnel correction parameters, and displays them graphically on the tunnel BIM model. It renders segment displacement, convergence values, and stress in real time; areas exceeding limits automatically flash red; and a list displays the online / offline status and real-time parameters (pressure, flow rate, time) of all equipment, scrolling through newly triggered yellow, orange, and red warnings. Construction parameters (pressure, flow rate, displacement) automatically generate PQt curves (pressure-flow-time relationship curves), supporting 5-minute data backtracking. Historical data is analyzed using a random forest algorithm to predict equipment failures (such as pipe blockage risk), pushing maintenance suggestions 30 seconds in advance, reducing unplanned downtime by 70%.

[0080] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the shield tunnel deformation correction construction technology of this application will be described in detail below with reference to specific embodiments.

[0081] This embodiment relates to a specific construction process for deformation correction in shield tunnels, such as... Figure 7 As shown, the grouting system includes a track trolley 8, on which are sequentially mounted a first grouting machine 1, a sealed mud return tank 2, a cement silo 3, a mud mixer 4, grouting equipment 5, an intelligent control system 6, and a second grouting machine 7. Among these, as shown... Figure 8 As shown, the first grouting machine 1 includes a laser alignment device 1.1, a grouting rod 1.2, a grouting drilling device 1.3, and a first reflecting prism 1.4, as follows. Figure 9 As shown, the grouting system also includes an electric control valve 9.1, a pressure sensor 9.2, a second reflecting prism 9.3, a grouting rod alignment sensor 9.4, a grouting blowout prevention device 9.5, and a grouting sealing device 9.6, as follows. Figure 10 As shown, the construction process includes the following steps:

[0082] Step S1: Intelligent Equipment Arrival and Deployment: The equipment enters through the end well or starting station. The track trolley, acting as an integrated intelligent platform, not only carries the equipment but also connects the multi-angle reinforcement machine, intelligent control console, and mud recovery tank via IoT modules (such as 5G communication), enabling data exchange and laying the foundation for intelligent management throughout the entire process.

[0083] Step S2, Automatic Fixing of the Track Trolley Based on Precise Positioning: Before fixing the trolley, a three-dimensional laser scanning process is added to quickly acquire the initial deformation data of the tunnel segments, providing a benchmark for subsequent intelligent grouting. After the trolley is in place, it is automatically leveled using an integrated high-precision tilt sensor and laser rangefinder, and automatically anchored to the track through a hydraulic device to ensure stability and reliability under subsequent huge reaction forces.

[0084] Step S3, Precise Detection and Risk Warning of Water and Soil Pressure: Based on the exploratory drilling, the plug equipped with a pressure gauge will be used as the standard configuration to quantitatively monitor water pressure and soil pressure in real time. The data will be directly uploaded to the intelligent control platform. The platform has a built-in early warning mechanism. When the pressure gradient or instantaneous value exceeds the limit (such as pressure gradient > 0.5MPa / s), it will automatically trigger a yellow, orange and red three-level alarm to guide construction decisions.

[0085] Step S4, Controllable anti-surge opening and casing installation: Combining the existing opening water storage container and gate valve, the casing design is optimized to enable unidirectional slurry discharge function, further reducing the risk of sudden surge. When installing the sealing anti-surge device, the laser automatic positioning system built into the reinforcement machine is used to achieve rapid and accurate alignment of the grouting rod and the ball valve, improving the sealing reliability.

[0086] Step S5: High-performance slurry and automatic preparation: Use fast-setting dual-liquid slurry (such as adding water glass to cement slurry to achieve rapid setting within 20 seconds) or polymer materials to quickly form support and control the diffusion range. The automatic mixing system accurately dispenses materials according to the preset water-cement ratio and performs secondary mixing to ensure that the slurry quality is uniform and stable.

[0087] Step S6, Multi-angle Collaborative Intelligent Grouting: Implementing a "pressure gradient coupled grouting strategy," two multi-angle reinforcement machines are started to grout at symmetrical or conjugate positions on the tunnel cross-section. One side is first injected with lower pressure to initially fill the soil pores, while the other side is subsequently injected with higher pressure, forming a progressive compression. The stress diffusion superposition effect is used to achieve balanced support of the tunnel segments. The intelligent control system (such as a fuzzy PID algorithm) uses real-time data from the segment displacement sensor (such as a laser convergence meter) as feedback to dynamically adjust the grouting pressure (P) and flow rate (Q). When the displacement rate exceeds the limit, the system automatically switches to a "constant flow rate - variable pressure" mode to ensure uniform filling; when it approaches the target value, it switches to a "constant pressure - variable flow rate" mode for fine-tuning, improving the displacement control accuracy to ±2mm. Through the collaboration of the hydraulically driven chuck and the rotating docking module, the grouting rod is quickly docked, with a single docking time of ≤3 minutes, supporting the continuity of deep hole grouting operations and reducing manual intervention by more than 50%.

[0088] Specifically, such as Figure 11 and Figure 12As shown, the track trolley first travels to the target segment ring. At the front and rear ends of the integrated track trolley, a first multi-angle reinforcement machine and a second multi-angle reinforcement machine are respectively configured. The two reinforcement machines automatically position themselves according to the plan. Each reinforcement machine has a multi-degree-of-freedom robotic arm, which can achieve positioning at any angle in space, ensuring that the grouting pipe can be tightly and vertically attached to the grouting holes of segments with different curvatures. A grouting pipe is installed at its end, equipped with a laser alignment device, so that the matrix grouting plate accurately aligns with the grouting hole. An automatic monitoring system quickly scans the assembled segments, identifying areas with excessive convergence and deformation, and feeding this information back to the control system via sensors. A high-precision deformation model is generated, and correction zones are defined. The control algorithm compares the monitoring data with the grouting parameters in real time, automatically recommending initial grouting points, pressure parameters, and recommended linkage modes. The operator confirms or fine-tunes the grouting parameters and starts the automatic grouting program. After grouting each zone is completed, the system evaluates the segment displacement response before starting the next zone, achieving fine-tuning. Simultaneous operation of dual machines significantly reduces the number of construction cycles and the time lost due to repeated start-ups and shutdowns. It also allows for the completion of reinforcement or correction tasks over a larger area within the same timeframe, improving equipment utilization and overall construction efficiency. By collaboratively controlling the grouting rate and pressure development process, the system achieves a more gradual ground response, avoiding the risks of soil splitting, heave, or sudden surges caused by rapid high-pressure injection at a single point, thus ensuring greater safety for existing structures and the surrounding environment. The system uses pressure as the primary control target. Each grouting pipe is connected to an independent pipeline and equipped with a high-precision electromagnetic flowmeter and pressure sensor. It connects to the grouting pump station via an integrated multi-channel hydraulic control valve group. The system uses an HMI to monitor the pressure-flow curve, segment displacement changes, and dual-machine collaborative status in real time, dynamically adjusting the flow rate. The system sets a target pressure curve and a maximum grouting volume limit for each grouting point. When the pressure reaches the set value but the grouting volume does not reach the limit, the pressure is maintained until grouting is complete. If the correction effect deviates from expectations, the system can automatically fine-tune the pressure or timing of subsequent grouting points, achieving adaptive optimization and correction. After completing the single-ring correction operation, the system automatically generates a grouting report, performs another scan measurement, compares it with the data before correction, verifies the correction effect, and if it does not meet the standard, a secondary fine-tuning procedure can be initiated.

[0089] In addition, the system schedules the two reinforcement machines as a whole, supporting multiple collaborative grouting modes. The multiple grouting holes are not controlled independently, but constitute at least one group of non-independent grouting units. Changes in the grouting parameters of any grouting hole will trigger the system to automatically coordinate the other equipment to synchronously adjust the grouting parameters of other grouting holes in the same group. This avoids additional eccentric loads caused by unilateral grouting, effectively reduces the risk of local stress concentration on the segments, makes the segments more uniformly stressed, and reduces the probability of cracking and misalignment. The system also manages the cumulative grouting volume through a high-precision electromagnetic flowmeter, automatically stopping grouting after reaching the correction target, avoiding material waste and excessive ground disturbance. At the same time, it prevents excessive grouting in a single hole, ensuring the uniformity of diffusion radius and reinforcement strength, and promoting the continuous circular formation of the reinforced body in space.

[0090] Step S7, Pressure-Controllable Sealing and Effect Verification: The sealing grouting adopts a pressure control logic similar to that in step S6 to ensure that the pressure inside the hole is stable and meets the formation pressure requirements. Micro-expansion cement is used for filling to eliminate the risk of leakage. After sealing, the treated section is scanned again using a 3D laser scanner and compared with the initial data in step S2 to quantitatively evaluate the correction effect and generate a traceable construction report.

[0091] Example 1: The automated monitoring system uploads convergence data for the 3rd ring (exceeding the standard by 5cm). The platform calls the evaluation model, scores S=68, and automatically generates a "urgent correction required" task. Based on the BIM model and historical data, the platform recommends a correction plan. The initial grouting pressure is set at 25MPa, and the target correction displacement is 1.5cm. After the engineer confirms the plan, the platform starts construction with one click. Two reinforcement machines automatically position themselves to the designated grouting holes in the 3rd ring. After grouting starts, the platform monitors the pressure, flow rate, and segment displacement in real time. When the displacement sensor shows that the segment has receded by 1.0cm, the mechanical control algorithm automatically reduces the grouting pressure for stabilization. During the process, if the pressure at grouting point 1 suddenly rises to the pressure warning value, the platform immediately triggers "pressure fuse," stops grouting at that point, and issues an orange alarm, prompting the engineer to check for pipe blockage. This continues until the segment reaches the expected correction value. The platform automatically schedules monitoring equipment for retesting and generates a correction effect comparison report. If the target is not met, the system can recommend secondary fine-tuning parameters based on new data.

[0092] This application also provides a shield tunnel deformation correction system. It should be noted that the shield tunnel deformation correction system of this application can be used to execute the construction process for shield tunnel deformation correction provided in this application. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0093] The following describes the shield tunnel deformation correction system provided in the embodiments of this application.

[0094] Figure 13 This is a schematic diagram of a shield tunnel deformation correction system according to an embodiment of this application. Figure 13 As shown, the system includes:

[0095] The first acquisition unit 10 is used to acquire the current grouting parameters of the target segment when the target segment needs to be corrected. The current grouting parameters include grouting pressure, grouting volume, return grout volume and effective grouting time.

[0096] Specifically, if the target segment needs to be corrected, grouting correction can be performed on the target segment. During the grouting process, the current grouting parameters of the target segment are obtained so as to calculate the correction amount of the target segment in real time.

[0097] The first calculation unit 20 is used to calculate the first correction amount and the second correction amount of the target segment based on the current grouting parameters. The first correction amount is the total correction amount in the vertical direction of the segment, and the second correction amount is the lateral convergence correction amount of the segment itself during grouting.

[0098] Specifically, based on the current grouting parameters, the first correction amount of the target segment in the vertical direction and the second correction amount of the target segment in the horizontal convergence direction are calculated, so as to realize real-time monitoring of the correction amount of the target segment in the horizontal and vertical directions during the grouting process.

[0099] The first adjustment unit 30 is used to adjust the current grouting parameters of the target segment according to the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment is equal to the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment is equal to the target correction amount corresponding to the second correction amount of the target segment.

[0100] Specifically, the actual monitored correction amount of the target segment is compared with the target correction amount to adjust the current grouting parameters so that the actual monitored correction amount gradually approaches the target correction amount until the correction is completed. For example, when the difference between the actual monitored correction amount and the target correction amount is large, the current grouting parameters such as the grouting pressure are increased to speed up the correction. When the difference between the actual monitored correction amount and the target correction amount is small, the current grouting parameters such as the grouting pressure are decreased to slow down the correction and avoid overcorrection.

[0101] In this embodiment, the real-time correction amount of the target segment, namely the first correction amount and the second correction amount, is calculated based on the current grouting parameters. The current grouting parameters can then be adjusted in real time so that the real-time correction amount of the target segment gradually approaches the corresponding target correction amount, until the first correction amount equals the target correction amount corresponding to the first correction amount and the second correction amount equals the target correction amount corresponding to the second correction amount. This completes the grouting correction and avoids over-correction or under-correction that leads to poor reinforcement effect. This solves the problem of poor reinforcement effect caused by low correction accuracy in the prior art.

[0102] To determine the construction area, in one optional implementation, the system further includes:

[0103] The first determining unit is used to determine the evaluation index based on the pre-construction monitoring data before obtaining the current grouting parameters of the target segment when the target segment needs to be corrected. The pre-construction monitoring data includes segment displacement, convergence value and stress, and the evaluation index includes crack width, misalignment and convergence value.

[0104] The input unit is used to input each of the above-mentioned evaluation indicators of the target pipe segment into the corresponding membership function to obtain the membership degree of each of the above-mentioned evaluation indicators.

[0105] The second determining unit is used to determine the weights of the above evaluation indicators using the analytic hierarchy process.

[0106] The second calculation unit is used to perform a weighted average of the membership degrees of the above evaluation indicators using the weights of the above evaluation indicators to obtain the final score.

[0107] The third determining unit is used to determine that the target segment needs to be corrected if the final score is less than the predetermined score.

[0108] In the above implementation, based on pre-construction monitoring data, a multi-level fuzzy comprehensive evaluation model is used for automatic assessment. The model integrates tunnel design parameters and geological survey reports, and automatically divides evaluation units according to segment rings and construction technology. The Analytic Hierarchy Process (AHP) is used to assign weights to indicators such as crack width, misalignment, and convergence value. The model calculates the final score S (out of 100) and assigns a grade: S≥90 Excellent, 75≤S<90 Good, S<75 Needs Correction. This serves as the basis for whether to initiate correction construction, thus identifying the construction areas that need correction.

[0109] To improve the accuracy of real-time correction calculation, in one optional implementation, the first calculation unit includes:

[0110] The first calculation module is used to apply the first correction formula. The first foundation correction amount of the target segment and the first foundation correction amount of other segments were calculated, where δ is the first foundation correction amount, c is the constraint influence coefficient of other segments next to the target segment on the target segment, P is the grouting pressure, Q1 is the grouting volume, Q0 is the return grout volume, k is the return grouting pressure coefficient, t is the effective grouting time, A1 is the effective area per meter of the correction pressure acting on the reinforced body of the target segment, A2 is the effective area per meter of the soil on the side of the shield tunnel opposite to the pile, and K... v denoted as the soil reaction coefficient next to the aforementioned pipe segment, and e is the compaction coefficient between the aforementioned pipe segment and the soil.

[0111] The second calculation module is used to apply the second correction formula. The second foundation correction amount for the target segment and the second foundation correction amounts for the other segments were calculated, where S is the second foundation correction amount, ν is the Poisson's ratio of the concrete of the segment, R = r + b / 2, r is the inner diameter of the segment, b is the horizontal thickness of the segment, and E... c Let f be the elastic modulus of the concrete of the aforementioned pipe segment, and f be the stiffness reduction factor of the aforementioned pipe segment.

[0112] The correction module is used to correct the first basic correction amount of the target segment using the first basic correction amount of the other segments to obtain the first correction amount of the target segment, and to correct the second basic correction amount of the target segment using the second basic correction amount of the other segments to obtain the second correction amount of the target segment.

[0113] In the above embodiments, ΔP is the correction pressure on the segment. Where β is the cement slurry pressure transmission efficiency coefficient. First basic correction amount The first basic correction amount of the target segment and the first basic correction amount of other segments can be calculated using the first correction amount formula. That is, the correction amount generated in the vertical direction by the grouting correction of the target segment and other segments themselves. Similarly, the second correction amount formula can be used to calculate the correction amount. The second basic correction amount of the target segment and the second basic correction amount of the other segments were calculated, that is, the correction amount generated laterally by the grouting correction of the target segment and other segments themselves, and the first correction amount of the target segment. ,in, δ i δ is the first foundation correction amount in the vertical direction when grouting the target segment i. j δ is the first foundation correction amount in the vertical direction when grouting other segments j. ij The vertical correction amount for the target segment i when grouting other segments j. , where L ji Let Li be the distance between other segments j and the target segment i, and L0 be the axial length of a single segment. The first basic correction amount of the target segment can be obtained by correcting the first basic correction amount of the target segment using the first basic correction amount of the other segments. Similarly, the second correction amount of the target segment... ,in, S i S is the second foundation correction amount in the vertical direction during grouting of target segment i. j S is the second foundation correction amount in the vertical direction when grouting other segments j. ij The vertical correction amount for the target segment i when grouting other segments j. , where L ji Let Li be the distance between other pipe segments j and the target pipe segment i, and L0 be the axial length of a single pipe segment. The second correction amount of the target pipe segment can be obtained by correcting the second basic correction amount of the other pipe segments with the second basic correction amount of the target pipe segment. This takes into account the mutual influence between pipe segments during grouting, greatly improving the accuracy of the correction amount calculation. For example, as... Figure 3 , Figure 4 and Figure 5 As shown, multiple segments can be grouted simultaneously, and during grouting, the segments affect each other's correction amount.

[0114] Of course, partial segment correction can be used for verification, and the corresponding parameters, such as k, can be optimized to make the calculation results of the formula closer to the actual correction amount and reduce the error.

[0115] To achieve intelligent adjustment and adaptive correction of grouting parameters, in one optional embodiment, the first adjustment unit includes:

[0116] The third calculation module is used to calculate the adjustment amount of each of the above-mentioned current grouting parameters by using a fuzzy PID algorithm to calculate the first correction amount, the target correction amount corresponding to the first correction amount, the second correction amount, and the target correction amount corresponding to the second correction amount.

[0117] The adjustment module is used to adjust the current grouting parameters of the target segment according to the adjustment amount of each of the current grouting parameters and update the first correction amount and the second correction amount until the first correction amount is equal to the target correction amount corresponding to the first correction amount and the second correction amount is equal to the target correction amount corresponding to the second correction amount.

[0118] In the above implementation, the PID controller calculates the control quantity using three parts: proportional (P), integral (I), and derivative (D). Fuzzy control is an empirical rule-based control that processes system input and output through "if-then" rules, without relying on a precise mathematical model. The fuzzy PID algorithm uses fuzzy logic to dynamically adjust the PID parameters, enabling the PID controller to adaptively adjust under different deviations and rates of change. The core of the control system consists of an industrial-grade PLC (Programmable Logic Controller) and an industrial control computer (operator station). The PLC is responsible for high-speed acquisition of data from all sensors (pressure, flow, displacement) and executing the fuzzy PID algorithm to adjust the parameters of each grouting head in real time. The industrial control computer provides a visual human-machine interface (HMI) to display the 3D tunnel model, real-time grouting parameter curves, equipment status, and allows engineers to set and adjust grouting strategies.

[0119] To achieve safe control of grouting pressure and return grouting pressure, in an optional embodiment, the system further includes:

[0120] The second acquisition unit is used to acquire the minimum and maximum values ​​of the return slurry pressure;

[0121] The first control unit is used to control the electric control valve to open for grouting when the grouting pressure reaches the minimum value after grouting begins.

[0122] The second adjustment unit is used to adjust the opening of the electric control valve when the return pressure is less than the minimum value of the return pressure or the return pressure is greater than the maximum value of the return pressure, so that the return pressure is greater than or equal to the minimum value of the return pressure and less than or equal to the maximum value of the return pressure.

[0123] The second control unit is used to stop grouting when the grouting pressure is greater than the maximum grouting pressure of the segment, wherein the maximum grouting pressure of the segment is less than the ultimate pressure that the target segment can withstand.

[0124] In the above embodiments, such as Figure 6 As shown, the slurry recovery is controlled by an electric control valve and pressure sensor installed in the blowout preventer. The electric control valve and pressure sensor are connected to the intelligent control system. During construction, a maximum and minimum pressure control value is preset in the intelligent control system. The pressure status is transmitted to the intelligent control system through the slurry return pressure sensor. The intelligent control system opens the electric control valve to return the slurry based on whether the minimum pressure value is reached. During the slurry return process, the status of the tunnel segments is monitored. If abnormal changes occur in the tunnel segment correction, such as too fast or too slow, the size of the electric control valve can be adjusted through the intelligent control system. If the slurry return pressure is too high or too low, exceeding the preset pressure control value, the pressure sensor will feed back a signal to the intelligent control system, ensuring that the grouting process is always within the preset structural safety response range. The intelligent control system will issue an alarm, realizing automated control of the slurry return volume and pressure, reducing human error and ensuring the grouting effect. Once the instantaneous value of the grouting pressure exceeds 85% of the tunnel segment's withstand limit (which can be set), the system immediately triggers "pressure fuse", and the grouting pump stops instantly to prevent damage to the tunnel segment structure.

[0125] To achieve automatic and precise hole alignment, in one optional embodiment, the system further includes:

[0126] The third acquisition unit is used to acquire the coordinates of the end of the grouting rod, the center coordinates of the grouting hole, the deflection angle of the grouting rod, and the length of the grouting rod before grouting begins.

[0127] The third calculation unit is used to calculate the deviation between the coordinates of the end of the grouting rod and the center coordinates of the grouting hole, obtain the correction amount, and calculate the eccentricity based on the deflection angle and the length of the grouting rod.

[0128] The third control unit is used to control the robotic arm to adjust the position and posture of the end of the grouting rod until the correction amount is less than or equal to the maximum allowable comprehensive deviation, and the eccentricity is less than or equal to the maximum eccentricity.

[0129] In the above embodiment, when the track trolley moves to the vicinity of the target segment, the robotic arm initially extends and uses a high-precision laser rangefinder to project a laser beam (such as the OT-7000 automatic alignment system with an accuracy of ±0.002 inches) onto the annular prism marker integrated on the outer periphery of the blowout preventer. The robotic arm's posture is manually coarsely adjusted so that the laser spot coincides with the center of the prism (deviation threshold <5mm), forming a reference light plane. The laser wavelength is 635nm, the beam diameter is 8~12mm, and the working distance can reach 100m, achieving non-contact initial positioning. Information is monitored in real time by tilt and displacement sensors installed at the end of the grouting rod to measure the grouting rod's deflection angle (Δθ) and three-dimensional coordinates (x, y, z). The intelligent control system calculates the correction amount based on the spatial geometric model. Where ε is the maximum permissible comprehensive deviation, sensor data is transmitted to the intelligent control system via wireless communication (such as the Zigbee protocol), dynamically calculating the deviation between the grouting rod axis and the grouting hole axis, and outputting correction commands to the robotic arm servo motor. The control system drives the robotic arm to make fine adjustments, and through iterative feedback control, the deviation converges to within the threshold. When the grouting rod penetrates the segment to a set length (e.g., 3m), the automatic rod connection mechanism (composed of a hydraulically driven chuck and a rotary docking module) pushes the new rod to the docking position. The hydraulic chuck (with a floating design that allows for ±2° adaptive skew angle) precisely aligns the rod thread, and the rotary module completes the screwing with a constant torque (set according to the rod diameter). Parameters such as grouting rod vibration and sealing pressure are continuously monitored. If deviation exceeds the limit or sealing failure is detected, grouting is immediately paused and an audible and visual alarm is triggered. The control interface displays a three-dimensional deviation curve and correction log, supporting manual intervention. The docking process must meet the eccentricity constraint: d n Using the nominal diameter of the grouting rod, the drill rod can be quickly and accurately aligned with the hole.

[0130] To reduce downtime, in one optional implementation, the system includes:

[0131] The fourth acquisition unit is used to acquire the aforementioned pre-construction monitoring data for each segment before determining the evaluation indicators based on the pre-construction monitoring data.

[0132] The early warning unit is used to issue an early warning for the aforementioned pipe segment corresponding to the aforementioned pre-construction monitoring data that exceeds the limit when the aforementioned pre-construction monitoring data exceeds the limit.

[0133] The fourth determining unit is used to determine the aforementioned tunnel segment that was warned as the aforementioned target tunnel segment.

[0134] In the above implementation, the platform homepage integrates all key information, summarizes historical tunnel correction parameters, and displays them graphically on the tunnel BIM model. It renders segment displacement, convergence values, and stress in real time; areas exceeding limits automatically flash red; and a list displays the online / offline status and real-time parameters (pressure, flow rate, time) of all equipment, scrolling through newly triggered yellow, orange, and red warnings. Construction parameters (pressure, flow rate, displacement) automatically generate PQt curves (pressure-flow-time relationship curves), supporting 5-minute data backtracking. Historical data is analyzed using a random forest algorithm to predict equipment failures (such as pipe blockage risk), pushing maintenance suggestions 30 seconds in advance, reducing unplanned downtime by 70%.

[0135] The aforementioned shield tunnel deformation correction system includes a processor and a memory. The first acquisition unit, the first calculation unit, and the first adjustment unit are all stored as program units in the memory. The processor executes these program units stored in the memory to achieve their respective functions. All of the above modules reside in the same processor; alternatively, the modules may be located in different processors in any combination.

[0136] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and adjusting kernel parameters can address the problem of low correction accuracy leading to poor hardening effects in existing technologies.

[0137] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0138] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the construction process for correcting the deformation of the shield tunnel.

[0139] Specifically, the construction process for shield tunnel deformation correction includes:

[0140] Step S201: When the target segment needs to be corrected, obtain the current grouting parameters of the target segment. The current grouting parameters include grouting pressure, grouting volume, return grout volume, and effective grouting time.

[0141] Step S202: Calculate the first correction amount and the second correction amount of the target segment based on the current grouting parameters. The first correction amount is the total correction amount in the vertical direction of the segment, and the second correction amount is the lateral convergence correction amount of the segment itself during grouting.

[0142] Step S203: Adjust the current grouting parameters of the target segment according to the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment is equal to the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment is equal to the target correction amount corresponding to the second correction amount of the target segment.

[0143] This invention provides a processor for running a program, wherein the program executes the aforementioned shield tunnel deformation correction construction process.

[0144] Specifically, the construction process for shield tunnel deformation correction includes:

[0145] Step S201: When the target segment needs to be corrected, obtain the current grouting parameters of the target segment. The current grouting parameters include grouting pressure, grouting volume, return grout volume, and effective grouting time.

[0146] Step S202: Calculate the first correction amount and the second correction amount of the target segment based on the current grouting parameters. The first correction amount is the total correction amount in the vertical direction of the segment, and the second correction amount is the lateral convergence correction amount of the segment itself during grouting.

[0147] Step S203: Adjust the current grouting parameters of the target segment according to the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment is equal to the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment is equal to the target correction amount corresponding to the second correction amount of the target segment.

[0148] This invention provides a grouting system, including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0149] Step S201: When the target segment needs to be corrected, obtain the current grouting parameters of the target segment. The current grouting parameters include grouting pressure, grouting volume, return grout volume, and effective grouting time.

[0150] Step S202: Calculate the first correction amount and the second correction amount of the target segment based on the current grouting parameters. The first correction amount is the total correction amount in the vertical direction of the segment, and the second correction amount is the lateral convergence correction amount of the segment itself during grouting.

[0151] Step S203: Adjust the current grouting parameters of the target segment according to the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment is equal to the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment is equal to the target correction amount corresponding to the second correction amount of the target segment.

[0152] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0153] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program that initializes at least the following construction processes:

[0154] Step S201: When the target segment needs to be corrected, obtain the current grouting parameters of the target segment. The current grouting parameters include grouting pressure, grouting volume, return grout volume, and effective grouting time.

[0155] Step S202: Calculate the first correction amount and the second correction amount of the target segment based on the current grouting parameters. The first correction amount is the total correction amount in the vertical direction of the segment, and the second correction amount is the lateral convergence correction amount of the segment itself during grouting.

[0156] Step S203: Adjust the current grouting parameters of the target segment according to the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment is equal to the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment is equal to the target correction amount corresponding to the second correction amount of the target segment.

[0157] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0158] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0159] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0160] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0161] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0162] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory. Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0163] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0164] 1) This application utilizes dual equipment (multi-angle reinforcement machine) to synchronously grout at symmetrical or conjugate positions on the tunnel cross section, forming a spatially superimposed pressure field. A pressure gradient coupling grouting strategy is adopted, with one side of the equipment first injecting grout at a lower pressure to initially fill the soil pores, followed by the other side injecting at a higher pressure, forming a progressive compression. The grout injected at each grouting point forms an approximately spherical or ellipsoidal diffuser, compressing the surrounding soil. When two or more grouting points are spatially close and the grouting sequence is optimized, their individual stress diffusion zones overlap and interfere with each other, forming a continuous, higher-strength, synergistic uplift superposition zone. Through the stress diffusion superposition effect (such as the composite support force generated by grout squeezing the soil), balanced support is achieved for the tunnel segment structure. Based on the soil-structure interaction principle, local grouting pressure is transformed into an overall corrective force for the convergent deformation of the tunnel segment. Compared with traditional single-point grouting, this technology improves the correction efficiency by approximately 40% and reduces stress concentration in the tunnel segment.

[0165] 2) This application employs a fuzzy PID dynamic adjustment algorithm with segment displacement sensor data (such as the convergence value monitored by a laser convergence meter) as feedback to correct the grouting pressure (P) and flow rate (Q) in real time. This changes the traditional single-point, extensive grouting method and achieves precise control over the grouting position, pressure, flow rate, and timing. When the segment displacement rate exceeds the limit, the system automatically switches to a "constant flow rate - variable pressure" mode to prioritize ensuring the uniformity of grout filling. When the displacement approaches the target value, it switches to a "constant pressure - variable flow rate" mode for fine-tuning. The dual-machine collaborative operation significantly shortens the correction construction time. Through pressure field coupling, single-point stress concentration is avoided, making the segment structure more uniformly stressed and the correction process safer and more stable. This system improves displacement control accuracy from ±5mm to ±2mm using traditional methods, and controls pressure fluctuation within ±3% of the set value (e.g., when the target pressure is 1.0MPa, the actual fluctuation is ≤0.03MPa). The entire process is digitized, and all construction parameters and effect data are recorded, providing valuable data accumulation and optimization basis for subsequent construction, and enabling predictive maintenance.

[0166] 3) This application employs a combination of a laser rangefinder and an inclination sensor to ensure that the spatial deviation between the grouting rod axis and the grouting hole axis meets the correction amount. The butt joint adopts a dual structure of metal bellows and fluororubber sealing ring, withstanding pressure ≥35MPa, improving the leak-proof efficiency by 60% compared to traditional threaded connections. Through the coordination of the hydraulically driven chuck and the rotating butt module, the single rod connection time is ≤3 minutes, supporting uninterrupted pressurization during deep hole (>3m) grouting operations, reducing the frequency of manual intervention by more than 50%.

[0167] 4) The grouting system of this application integrates grouting equipment, a grout return system, a robotic arm, and monitoring sensors. Data is uploaded to a cloud platform in real time via an IoT module (such as 5G communication). The platform has a built-in three-level early warning mechanism (yellow, orange, and red), automatically triggering an early warning when monitored parameters (such as pressure gradient > 0.5 MPa / s) exceed limits. Construction parameters (pressure, flow rate, displacement) automatically generate PQt curves (pressure-flow-time relationship curves), supporting 5-minute data backtracking. Historical data is analyzed using a random forest algorithm to predict equipment failures (such as pipe blockage risk), pushing maintenance suggestions 30 seconds in advance, reducing unplanned downtime by 70%.

[0168] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A construction process for deformation correction in shield tunnels, characterized in that, include: When the target segment needs to be corrected, the current grouting parameters of the target segment are obtained. The current grouting parameters include grouting pressure, grouting volume, return grout volume, and effective grouting time. The first correction amount and the second correction amount of the target segment are calculated based on the current grouting parameters. The first correction amount is the total correction amount in the vertical direction of the segment, and the second correction amount is the lateral convergence correction amount of the segment itself during grouting. The current grouting parameters of the target segment are adjusted according to the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment is equal to the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment is equal to the target correction amount corresponding to the second correction amount of the target segment.

2. The construction process according to claim 1, characterized in that, In cases where the target segment requires correction, before obtaining the current grouting parameters of the target segment, the construction process for shield tunnel deformation correction further includes: Evaluation indicators are determined based on pre-construction monitoring data, including segment displacement, convergence value, and stress, and the evaluation indicators include crack width, misalignment, and convergence value. Input each of the evaluation indicators of the target pipe segment into the corresponding membership function to obtain the membership degree of each evaluation indicator; The weights of the evaluation indicators are determined using the analytic hierarchy process (AHP). The membership degree of the evaluation index is weighted and averaged using the weights of the evaluation index to obtain the final score; If the final score is less than the predetermined score, it is determined that the target segment needs to be corrected.

3. The construction process according to claim 1, characterized in that, The first and second correction amounts of the target segment are calculated based on the current grouting parameters, including: Using the first correction formula The first foundation correction amount of the target segment and the first foundation correction amounts of other segments are calculated, where δ is the first foundation correction amount, c is the constraint influence coefficient of other segments next to the target segment on the target segment, P is the grouting pressure, Q1 is the grouting volume, Q0 is the return grout volume, k is the return grouting pressure coefficient, t is the effective grouting time, A1 is the effective area per meter of the correction pressure acting on the reinforced body of the target segment, A2 is the effective area per meter of the soil on the side of the shield tunnel opposite to the pile, and K... v denoted as the soil reaction coefficient next to the segment, and e is the compaction coefficient between the segment and the soil. Using the second correction formula The second foundation correction amount for the target segment and the second foundation correction amounts for the other segments are calculated, where S is the second foundation correction amount, ν is the Poisson's ratio of the concrete of the segment, R = r + b / 2, r is the inner diameter of the segment, b is the horizontal thickness of the segment, and E... c Let f be the elastic modulus of the concrete of the segment, and f be the stiffness reduction factor of the segment. The first basic correction amount of the target segment is corrected by using the first basic correction amount of the other segments to obtain the first correction amount of the target segment. The second basic correction amount of the target segment is corrected by using the second basic correction amount of the other segments to obtain the second correction amount of the target segment.

4. The construction process according to claim 1, characterized in that, Adjusting the current grouting parameters of the target segment according to the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment equals the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment equals the target correction amount corresponding to the second correction amount of the target segment, including: The adjustment amount of each of the current grouting parameters is obtained by using the fuzzy PID algorithm to calculate the first correction amount, the target correction amount corresponding to the first correction amount, the second correction amount, and the target correction amount corresponding to the second correction amount; The current grouting parameters of the target segment are adjusted according to the adjustment amount of each current grouting parameter, and the first correction amount and the second correction amount are updated until the first correction amount is equal to the target correction amount corresponding to the first correction amount and the second correction amount is equal to the target correction amount corresponding to the second correction amount.

5. The construction process according to claim 1, characterized in that, The construction process also includes: Obtain the minimum and maximum values ​​of the return pressure; When the return grout pressure reaches its minimum value after grouting begins, the electric control valve is opened to allow for grout return. When the return pressure is less than the minimum return pressure or greater than the maximum return pressure, the opening of the electric control valve is adjusted so that the return pressure is greater than or equal to the minimum return pressure and less than or equal to the maximum return pressure. Grouting is stopped when the grouting pressure is greater than the maximum grouting pressure of the segment, and the maximum grouting pressure of the segment is less than the ultimate bearing pressure of the target segment.

6. The construction process according to claim 1, characterized in that, Before grouting begins, the construction process for shield tunnel deformation correction also includes: Obtain the coordinates of the end of the grouting rod, the center coordinates of the grouting hole, the deflection angle of the grouting rod, and the length of the grouting rod; The deviation between the coordinates of the end of the grouting rod and the center coordinates of the grouting hole is calculated to obtain the correction amount. The eccentricity is calculated based on the deflection angle and the length of the grouting rod. The robotic arm is controlled to adjust the position and orientation of the end of the grouting rod until the correction amount is less than or equal to the maximum allowable comprehensive deviation, and the eccentricity is less than or equal to the maximum eccentricity.

7. The construction process according to claim 2, characterized in that, Before determining the evaluation indicators based on pre-construction monitoring data, the shield tunnel deformation correction includes: Obtain the pre-construction monitoring data for each tunnel segment; If the pre-construction monitoring data exceeds the limit, an early warning will be issued for the segment corresponding to the pre-construction monitoring data that exceeds the limit; The segment that was warned of is identified as the target segment.

8. A shield tunnel deformation correction system, characterized in that, include: The first acquisition unit is used to acquire the current grouting parameters of the target segment when the target segment needs to be corrected. The current grouting parameters include grouting pressure, grouting volume, return grout volume, and effective grouting time. The first calculation unit is used to calculate the first correction amount and the second correction amount of the target segment based on the current grouting parameters. The first correction amount is the total correction amount in the vertical direction of the segment, and the second correction amount is the lateral convergence correction amount of the segment itself during grouting. The first adjustment unit is used to adjust the current grouting parameters of the target segment according to the first correction amount of the target segment, the target correction amount corresponding to the first correction amount of the target segment, the second correction amount of the target segment, and the target correction amount corresponding to the second correction amount of the target segment, until the first correction amount of the target segment is equal to the target correction amount corresponding to the first correction amount of the target segment and the second correction amount of the target segment is equal to the target correction amount corresponding to the second correction amount of the target segment.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the construction process according to any one of claims 1 to 7.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the construction process described in any one of claims 1 to 7.

Images