294 results about "Shield tunneling" patented technology

The invention discloses a device judging whether or not an earth pressure balance shield earth chamber is full. The device comprises a pressure detector disposed on the upper portion of a front shield earth chamber of the earth pressure balance shield; the signal output end of a pressure sensor is connected with an upper computer; the upper computer judges whether or not the chamber is full; if not, a warning signal is sent to an alarm unit. The device has the advantages that whether or not the earth chamber is full can be judged anytime during earth pressure balance shield tunneling, full-chamber shield tunneling can be ensured and the application of full-chamber tunneling decreases the danger of collapse ahead.

The shield tunneling machine dual-slurry injection anti-reverse structure provided by this invention includes a diversion block fixed inside the rear shield shell plate. The diversion block has a flow channel connecting liquid hole A and liquid pipe B. By making the flow channel pass through both ends of the diversion block along its length, the flow channel includes coaxially arranged inlet and outlet sections, as well as multiple annular flow channels connected in series between the inlet and outlet sections. Each annular flow channel includes an inclined section and a semi-annular section bypassing both ends of the inclined section. The inclined sections of adjacent annular flow channels have opposite inclination directions, and the semi-annular sections of adjacent annular flow channels are located on both sides of the axis of the inlet section, making the semi-annular sections teardrop-shaped. This allows the flow channel to form a Tesla flow channel with anti-reverse function, thus taking into account both diversion and anti-reverse functions. The structure is simple, has low manufacturing cost, high structural strength, can resist the impact of propulsion cylinder support shoes, is easy to disassemble and assemble, and has stronger buffering effect of anti-reverse effect, which can reduce the probability of blockage. After blockage, multiple methods can be used to clear it, and the handling flexibility is better.

This application belongs to the field of tunnel structure safety evaluation, specifically disclosing a quantitative evaluation method for the safety of shield tunnel structures. The method includes: determining joint opening and bolt stress as safety evaluation indicators for segment joints; determining structural bending moment, diameter change rate, and maximum joint opening as safety evaluation indicators for the overall structure; classifying each safety evaluation indicator into four levels and determining the grading threshold for each indicator at each safety level; using the analytic hierarchy process (AHP) to determine the weights of joint opening, bolt stress, structural bending moment, diameter change rate, and maximum joint opening in the fuzzy comprehensive evaluation; using a normal distribution membership function to calculate the membership degree of each safety evaluation indicator to each safety level; combining the weights and obtaining a weighted summation to obtain a comprehensive safety evaluation indicator; and determining the safety level of the shield tunnel structure. This application can accurately and comprehensively reflect the health status and complex stress evolution laws of the overall tunnel structure.

A method for segmented fitting of shield tunnel circumferential joints based on gradient value feature map density clustering includes the following steps: unfolding the tunnel's three-dimensional laser point cloud data to generate a two-dimensional grayscale image; calculating the vertical gradient values ​​of all pixels in the grayscale image, and generating a positive gradient value feature map A, a negative gradient value feature map B, and a comprehensive gradient value feature map C based on the magnitude and sign of the gradient values; determining the initial upper and lower edge row coordinates of the circumferential joint based on Figures A and B, and taking the middle row as the initial circumferential joint position; extracting pixels from the circumferential joint region in Figure C based on the initial circumferential joint position, performing cluster analysis, and dividing the circumferential joint region into several regions along the horizontal direction; identifying the upper and lower edges of the circumferential joint in each region, and calculating the center point as the center point of the circumferential joint in that region; sequentially connecting each point and extending to the image edge to form a broken line segment, thereby achieving segmented fitting. This invention achieves high-precision, adaptive segmented fitting of non-linear circumferential joints in shield tunnels, improving the accuracy and robustness of circumferential joint detection.

This invention relates to a device for reducing water leakage at the tunnel portal during shield tunneling in water-rich strata, and pertains to the field of shield tunneling technology. The invention includes a pre-embedded steel ring and an extended steel ring fixed to the pre-embedded steel ring. A fixed ring is arranged circumferentially on the rear side of the extended steel ring, and a set of flaps is arranged circumferentially inside the fixed ring. Each flap is connected to the fixed ring via its own shaft. A rubber ring plate is fixed between the extended steel ring and the fixed ring. A set of tail brushes is fixed circumferentially on the inner circumferential surface of the extended steel ring between the pre-embedded steel ring and the rubber ring plate. One end of the tail brush near the rubber ring plate is fixed to the inner surface of the extended steel ring, and the other end is inclined towards the pre-embedded steel ring. This invention, by placing tail brushes between the pre-embedded steel ring and the rubber ring plate, and filling the tail brushes with tail grease, improves their sealing and water-stopping effect. Combined with the flaps and the rubber ring plate, it achieves two-stage waterproofing, reducing water and sand inflow at the shield tunnel portal.

This invention discloses a multi-chamber adaptive balancing device for slurry pressure in lakebed shield tunneling, comprising a housing and a balancing assembly. A first fixing plate and a second fixing plate are fixedly installed inside the housing. The balancing assembly is positioned between the first and second fixing plates, and includes a fixing frame and an adjusting plate. A connecting rod is installed on one side of the adjusting plate, and a baffle is fixedly connected to the outer wall of the connecting rod. A balancing hole is formed through the outer wall of the first fixing plate. By incorporating the balancing assembly, when the slurry pressure in the slurry chamber exceeds the balancing pressure, the balancing assembly inside the adjusting chamber rotates. Under the influence of the slurry pressure difference across the first fixing plate and the change in the balancing chamber space, slurry in the balancing chamber is injected into the slurry chamber, thereby increasing the slurry pressure in the slurry chamber to a balanced state. This invention also solves the problem of large surface fluctuations caused by using air pressure to drive the slurry for pressure regulation, improving the stability and efficiency of the pressure balancing process.

The utility model discloses a kind of shield machine hydraulic propulsion system and shield machine, wherein, the shield machine hydraulic propulsion system includes for being connected with the initiative control oil circuit of first oil cylinder and for being connected with the following control oil circuit of second oil cylinder;Initiative control oil circuit includes for being set between the first propulsion oil circuit of hydraulic pump and the rodless chamber of first oil cylinder, first propulsion oil circuit includes proportioning speed regulating valve, proportioning pressure reducing valve and first ball valve arranged in sequence;Following control oil circuit includes for being set between the second propulsion oil circuit of hydraulic pump and the rodless chamber of second oil cylinder, second propulsion oil circuit includes second ball valve and pilot pressure reducing valve arranged in sequence, the control end of pilot pressure reducing valve is connected with the output end of proportioning pressure reducing valve, to make the propulsion pressure and propulsion speed of second propulsion oil circuit all keep consistent relative to first propulsion oil route.The shield machine hydraulic propulsion system provided by the utility model can reduce the use quantity of proportioning speed regulating valve and proportioning pressure reducing valve, simple structure and low in cost.

The application provides a shield machine oil cylinder control method and device and a storage medium, and relates to the field of shield machines. The method comprises the following steps: acquiring first oil cylinder parameters of all oil cylinders of the shield machine in an initial state; determining a first total thrust and a first action point; acquiring second oil cylinder parameters in a region to be assembled after the oil cylinders enter a synchronous advancing state; determining a second thrust target value of a second type of oil cylinder in a non-assembled region; determining an oil cylinder mode switching step number; controlling the first type of oil cylinder and the second type of oil cylinder to perform multiple first thrust adjustments until the number of executions reaches the oil cylinder mode switching step number, then reducing the thrust of each first type of oil cylinder to 0, and controlling the first type of oil cylinder to retract, so as to realize segment installation. The application solves the problem that the prior art ignores the influence of sudden changes in the thrust of the oil cylinders in the assembled region on the resultant thrust and the target point, and only focuses on the steady-state error after the target thrust distribution is completed, thereby reducing the control efficiency of the oil cylinders.

This invention belongs to the field of shield tunnel reinforcement construction technology, and particularly relates to an improved construction method for non-standard high-strength composite steel rings used in subway tunnel reinforcement during the operation window. It includes the following steps: S1, Fabrication process: Surveying, mapping, and designing the tunnel segments, and prefabricating composite steel ring components; S2, Preparation process: Determining the installation position of the composite steel ring components; S3, Installation process: During the subway operation window, installing the composite steel ring components with added fiber reinforcement inside the pipe at the determined position according to the installation process, and injecting grout or concrete into the cavity of the assembled improved composite steel ring. This invention, by embedding fiber reinforcement inside the composite steel ring components, forms a four-layer composite force-bearing system of "fiber cloth and steel pipe bundle + grout / concrete + fiber reinforcement" working synergistically, significantly improving the overall elastic modulus, strength, and stiffness of the composite steel ring, and significantly broadening the range of selectable mechanical properties required for tunnel structure reinforcement.

This invention discloses a multi-layered internal structure for shield tunneling based on a steel-concrete composite structure, including a flue slab, an upper lane slab, and a lower lane slab. The flue frame structure of the flue slab is connected to the steel plates pre-embedded in the corresponding tunnel segments, and the edges of the corresponding steel-concrete composite slab are sealed to the corresponding tunnel segments by cast-in-place concrete. The upper lane frame structure of the upper lane slab is fixed to the steel plates pre-embedded in the corresponding tunnel segments by multiple upper lane steel brackets. The lower lane slab has precast components at the bottom of the tunnel, with steel-concrete composite slabs on both sides, and the outer sides of the steel-concrete composite slabs are supported on steel longitudinal beams. The steel longitudinal beams are fixed to the steel plates pre-embedded in the corresponding tunnel segments by multiple lower lane steel brackets. During construction, the lower lane slab, upper lane slab, and flue slab are constructed sequentially from bottom to top, and finally the asphalt pavement layer is laid. The application of this invention reduces the self-weight, eliminates the need for rebar installation in tunnel segments, improves structural reliability and construction efficiency, and also frees up internal space in the tunnel.

This utility model relates to the field of tunneling equipment technology, specifically providing a shell cutter system and tunnel boring machine (TBM) with online wear monitoring and compensation. The system includes a shell cutter guide rail, a shell cutter assembly, a sealing box, a wear monitoring device, a locking mechanism, and a drive mechanism. The shell cutter guide rail is fixedly connected to the spokes of the cutterhead. The sealing box is located inside the spokes of the cutterhead and fixedly connected to the shell cutter guide rail. The shell cutter assembly is embedded in the shell cutter guide rail and can move along it. The wear monitoring device is located on the shell cutter assembly. The drive mechanism is located inside the sealing box and connected to the shell cutter assembly. The locking mechanism is located between the shell cutter assembly and the shell cutter guide rail, and the locking mechanism cooperates with the drive mechanism to achieve wear compensation for the shell cutter assembly. The shell cutter system provided by this utility model can monitor the wear of the shell cutter assembly in real time and automatically compensate for its wear, ensuring cutting accuracy, extending service life, and reducing construction costs.

The application discloses a separating and grading device for slurry shield tunneling in clayey soil and gravel stratum and relates to the technical field of shield construction mechanical equipment. The supporting unit is arranged on the top of the support and used for supporting the roller. The roller is arranged in an upwardly inclined manner along a discharging direction. The feeding plate is spirally arranged on the inner side of the roller peripheral wall and used for driving the material in the roller to spirally ascend. The roller peripheral wall is further provided with sieve holes. The driving unit is arranged on one side of the support and used for driving the roller to rotate. The other side of the support is provided with an inclined chute plate. The chute plate is used for receiving the material falling from the sieve holes. The feeding plate spirally arranged in the roller separates the gravel and clay blocks from the slurry shield tunneling and brings the gravel and clay blocks to the barrel opening through the spiral ascending channel. The slurry is separated. In the ascending process of the gravel and clay blocks, the gravel and clay blocks are sieved through the sieve holes. The sieved gravel is moved to the corresponding position through the chute plate below, so that the sieve holes are prevented from being blocked.

This invention discloses a random field probability prediction method for long-term settlement of shield tunnels in heterogeneous strata, belonging to the field of underground engineering structural health monitoring and risk assessment. The method first inverts the micromechanical parameters of the strata through shield tunneling parameters, then constructs a three-dimensional anisotropic random field model, generates random field samples through K-L series expansion, and calculates the settlement field using a three-dimensional fluid-structure interaction finite element model and Monte Carlo simulation. Statistical analysis is used to predict the settlement probability, and finally, the probability of settlement exceeding limits is calculated based on reliability theory to complete the risk assessment. This invention breaks through the homogenization assumption, quantifies settlement risk, adapts to complex heterogeneous strata, provides a scientific decision-making basis for the whole life cycle management of tunnels, and has strong engineering applicability.

This invention discloses an intelligent geological identification method for shield tunnels, comprising: collecting acoustic emission signals and tunneling control parameters during shield tunneling, and performing noise reduction processing to extract acoustic emission time parameters related to rock mass fracture; synchronizing and aligning the noise-reduced acoustic emission events with the tunneling control parameters in time; extracting acoustic emission features from the aligned acoustic emission events and operational features from the tunneling control parameters within a preset analysis window; standardizing and fusing the acoustic emission features and operational features to construct a fused feature vector; and inputting the fused feature vector into a trained geological identification model to obtain the current geological identification result. This invention also discloses a system for the above method. This invention provides advanced and accurate geological perception capabilities for shield tunneling construction, which is of great significance for ensuring construction safety and improving tunneling efficiency.

The application discloses a shield tunnel excavation disturbance data intelligent identification method based on dynamic time sequence prediction, which comprises the following steps: in the case of excavation disturbance, collecting various time sequence data of shield tunnel monitoring in real time, carrying out denoising, interpolation and normalization processing on original data, and inputting time window samples into a DFCM algorithm; calculating a membership matrix based on the distance between samples and cluster centers, and updating the membership in real time, and constructing an LSTM model of the membership vector output by the DFCM clustering algorithm; predicting the membership of the next time step, outputting a predicted difference vector, and determining a difference dynamic threshold value by using an adaptive threshold method, and when the predicted difference exceeds the threshold value, it is judged that the data is disturbed. The method can realize real-time identification and uncertainty quantification of disturbed data in a tunnel structure monitoring environment with strong interference and high noise, improve the accuracy and stability of underground structure health monitoring, and is suitable for urban shield tunnel operation monitoring and maintenance.

This invention belongs to the technical field of multi-objective optimization of shield parameters and provides a method and system for multi-objective optimization of shield construction parameters. The method for multi-objective optimization of shield construction parameters includes the steps of: obtaining initial shield construction parameters; optimizing the shield construction parameters using a multi-objective optimization algorithm; predicting the excavation speed using a random forest based on the shield construction parameters in the optimization of the shield construction parameters; calculating the shield excavation energy consumption ratio based on the excavation speed and shield construction parameters; and making the maximization of the excavation speed and the minimization of the shield excavation energy consumption ratio the two fitness functions of the multi-objective optimization algorithm. This method takes into account construction efficiency and cost reduction while ensuring construction safety.

The application provides a shield soft-hard stratum interface identification method and system based on slag change characteristics, which comprises the following steps: processing images at a slag outlet to obtain slag shape and volume, and obtaining the properties of hard rock stratum based on the slag shape and volume; performing real-time scanning on shield slag, determining the scanning surface of the surrounding environment through distance measurement values and angle values, forming a shield slag reconstruction model based on laser point cloud scanning, and obtaining the volume of the shield slag based on the shield slag reconstruction model; calculating the hard rock area proportion in the soft-hard interface according to the slag volume and the shield slag volume; obtaining the vibration signal of a shield cutter when the shield cutter enters a hard rock stratum from a soft stratum during the tunneling process of a shield tunneling machine in a composite stratum, and obtaining the change interface position of the soft-hard stratum according to the vibration signal; and drawing a shield excavation surface soft-hard stratum interface sketch based on the hard rock area proportion in the soft-hard interface and the change interface position of the soft-hard stratum, and identifying the shield excavation surface soft-hard stratum interface.

The application provides a shield tunnel geotechnical parameter inversion and tunneling parameter optimization method based on an approximate model. First, the geotechnical parameters are inverted by using the ground surface displacement of the tunneling section, then the ground surface displacement of the subsequent excavation is predicted by using the inverted geotechnical parameter results, and the construction tunneling parameters are optimized in time. Specifically, the corresponding relationship between the geotechnical parameters theta and the ground surface displacement y is established based on the approximate model method: y=Appro(theta); the target optimization function minF(theta) is established according to the obtained ground surface displacement monitoring data, and the particle swarm optimization algorithm is used to solve the optimal geotechnical parameter solution theta best ; the corresponding relationship between the shield construction parameters alpha and the ground surface displacement y is established based on the approximate model method: y=Appro(alpha); the target optimization function minF(alpha) is established according to the maximum displacement value u lim allowed by the specification, the particle swarm optimization algorithm is used to solve the target function, and the recommended value alpha best of the shield construction parameters is obtained. The application can reduce the calculation cost caused by frequent calling of the numerical model during parameter optimization, and improve the calculation efficiency.

This application relates to a method, system, equipment, and medium for intelligent control of gas concentration in the tunnel boring machine (TBM) environment. The method includes: acquiring a three-dimensional reconstructed reduced-order model of the gas concentration field; acquiring multi-source monitoring data of the tunneling environment and standardizing it to obtain a standardized input dataset; correcting the gas concentration field state vector based on the standardized input dataset and the model to obtain a corrected gas concentration field state vector; performing multi-step prediction of the gas concentration change trend based on the corrected gas concentration field state vector to obtain a gas concentration risk evolution sequence for future periods; and optimizing the control parameters of the ventilation and exhaust equipment based on the future gas concentration risk evolution sequence and the operating constraints of the ventilation and exhaust equipment to obtain a control command sequence. This method enables three-dimensional global perception and proactive forward control of gas concentration, solving the problems of control lag and blind spots.

The utility model discloses a slurry shield device, which belongs to the technical field of tunnel construction and comprises a containing box, a slurry cabin, a first conveying pipeline, a processing mechanism, a second conveying pipeline and a cutter head. The containing box is provided with a feeding opening communicating with the inner space, and the feeding opening is used for feeding muddy water materials into the containing box. The slurry cabin is used for accommodating initial slurry; the first conveying pipeline is used for conveying initial slurry in the slurry cabin to the accommodating box; the processing mechanism is used for processing the muddy water material entering the charging hole and the initial slurry in the accommodating box into standard slurry; the second conveying pipeline is used for conveying the standard slurry in the accommodating box to the slurry cabin; the cutterhead is arranged in the muddy water cabin and used for laying the standard slurry in the muddy water cabin to a tunnel face to form a mud film.

This application provides a model test device and method for the stability of the tunnel face during the freezing method in shield tunnels, relating to the field of tunnel and underground engineering technology. The device includes: a model box; a water level control system comprising a first and second water tank with independent adjustment on both sides, used to establish static water level or dynamic water seepage conditions; a ground freezing and thawing system comprising a buried temperature control pipe and connected refrigerant and heat supply units, achieving freezing and thawing through the same pipeline; a shield tunnel system with a tunnel face opening at one end; a tunnel face pressure control system comprising an airbag and a pressure regulating unit, simulating support pressure and pressure relief during opening by inflation and deflation; and a monitoring and data acquisition system for collecting data on ground temperature, stress, pore water pressure, and deformation. This device can completely simulate the entire process of freezing, pressure relief during opening, and thawing, providing a test platform for studying the stability of the tunnel face under the coupling of multiple factors.

This invention discloses a wastewater treatment system for subway tunnel shield tunneling, relating to the field of wastewater treatment technology. It includes, sequentially from front to back, a secondary sedimentation tank on the equipment bridge, a secondary sedimentation tank on trolley number six, a secondary sedimentation tank on trolley number five, a tertiary sedimentation tank at the wellhead, and a tertiary sedimentation tank on the ground, all connected by pipes. A flushing device is also included within the secondary sedimentation tank on the equipment bridge. Wastewater collected at the shield tail passes through these five sedimentation tanks. This wastewater treatment system for subway tunnel shield tunneling achieves graded sedimentation of silt through a five-stage sedimentation system, significantly reducing silt load compared to traditional single-stage sedimentation methods and effectively avoiding the risk of clogging of sewage pipes. Furthermore, the combination of annular water film protection and self-rotating nozzle crushing not only prevents secondary pollution during dredging but also improves sludge crushing efficiency.

This invention discloses a method and device for controlling surface deformation during shield tunneling construction based on digital twins, comprising: step S1, constructing an initial digital model of shield tunneling construction based on on-site shield tunneling construction data; step S2, collecting on-site shield tunneling construction parameters and ground response data caused by on-site shield tunneling construction in real time, and updating the digital model of shield tunneling construction constructed in step S1, thereby obtaining the mapping relationship between the digital model of shield tunneling construction and the shield tunneling construction parameters; step S3, based on the mapping relationship between the digital model of shield tunneling construction and the shield tunneling construction parameters, using a reinforcement learning algorithm to take the digital model of shield tunneling construction as the interaction environment for reinforcement learning, the set of construction parameters as the action space, and the reward function as the surface deformation, so as to minimize the surface deformation and determine the optimal sequence of construction parameter actions.

This invention discloses a method for early warning and decision-making regarding earth pressure risk in subway shield tunneling construction, relating to the field of shield tunneling technology. The method includes the following steps: S1, acquiring data to construct a control benchmark system and generating a weight vector; S2, collecting datasets and conducting evaluations to obtain comprehensive state indicators, then benchmarking them against the control benchmark system to identify earth pressure anomaly types, determine risk control levels, and match alternative control measures; S3, constructing an optimized decision-making model and calculating the cost-risk balance coefficient; S4, prioritizing each alternative control measure, generating early warning signals and control decision schemes, and simultaneously collecting effect data; S5, dynamically iteratively updating the control benchmark system and the optimized decision-making model based on the effect data. This invention simplifies the emergency response process for earth pressure risk by constructing an early warning and decision-making method for earth pressure risk in subway shield tunneling construction, improving the accuracy and response speed of earth pressure risk control.

This application discloses an evaluation method and system for emergency response to mudslides and water inrushes in shield tunnels, relating to the field of tunnel engineering disaster prevention and control technology. The method includes: acquiring fracture characteristic data at the site of a mudslide and water inrush disaster in a shield tunnel; extracting fracture structural features from fracture pore size distribution data, fracture orientation distribution data, and fracture connectivity data; calculating the fracture filling resistance index based on fracture complexity evaluation rules constructed according to fracture seepage laws; extracting hydraulic competition features; evaluating the grouting seepage balance state based on the fracture filling resistance index and hydraulic competition features; when the grouting seepage balance state is unbalanced, identifying the fracture obstruction type and generating emergency response strategy parameters; and generating an emergency response method evaluation result based on the emergency response strategy parameters. This application achieves quantitative evaluation of the grouting seepage state, improving the accuracy of the evaluation.

The application provides a creep test device for a steel ring reinforced shield tunnel lining interface, characterized in that the device comprises a support fixing mechanism, a constant ratio loading mechanism, a variable ratio loading mechanism and a test piece; the constant ratio loading mechanism and the variable ratio loading mechanism are arranged on the support fixing mechanism, the constant ratio loading mechanism and the variable ratio loading mechanism form a folded series two-stage lever mechanism, and the purpose of applying a load to the test piece is achieved by adjusting the counterweight and the length of the power arm on the variable ratio loading mechanism. The application also provides a combination device of the above device, and the creep test of the test piece under a pull-shear coupling condition can be realized by the combination of the two devices. The creep test of the steel ring reinforced shield tunnel lining interface by using the device has good load holding performance, can flexibly simulate complex pull-shear coupling conditions, and improves the test efficiency and reduces the test cost.

This invention relates to a construction method for building an external connecting passage in a shield tunnel with overlapping sections. The specific steps are: 1) determining the main structure, retaining structure form, and related parameters of the shaft to ensure its safety and reliability; 2) drilling freezing holes and analyzing the hole formation after the lower shield tunnel is completed; 3) freezing construction of the lower connecting passage; 4) drilling freezing holes for the upper connecting passage during the freezing period and analyzing the freezing effect; 5) construction of the lower connecting passage and grouting based on monitoring data, while paying attention to deformation coordination and waterproofing; 6) freezing construction of the upper connecting passage; 7) excavation, construction, and grouting of the upper connecting passage. This invention enables the smooth completion of the construction of an external connecting passage in a shield tunnel with overlapping sections, reducing the potential risk of structural damage during construction and providing protection for subway maintenance and disaster prevention.

The application discloses a method for jointly regulating ground surface settlement and pile foundation deformation during shield tunneling under buildings, and relates to the field of settlement and deformation regulation. The application establishes a mapping model of ground surface settlement and pile foundation deformation based on historical multidimensional data, so that key deformation parameters in the construction process can be accurately predicted and evaluated. Through the mapping model driven by historical reinforcement data, combined with current tunnel and pile foundation parameters and preset grouting parameters, intelligent reinforcement width calculation and operation of soft strata are realized, and the scientificity and efficiency of reinforcement are improved. Then, through setting a standard interval to dynamically monitor key parameters, combined with the collaborative feedback mechanism of the mapping model and the prediction model, automatic adjustment and optimization of construction parameters are realized, ensuring that the construction process is always within a safe and controllable range. Thus, the adaptability and safety of shield construction are significantly enhanced, and the construction risk caused by complex geological conditions or improper parameter setting is effectively reduced.

This invention discloses a shield tunneling full-process intelligent control method and system based on multi-task model coupling, belonging to the interdisciplinary technical field of industrial intelligent control systems and tunnel engineering digital twins. The method includes the following steps: S1, standardized data acquisition and cross-stage storage; S2, construction of a multi-stage coupled prediction model and parameter output; S3, multi-objective collaborative optimization and adaptive control decision generation; S4, control command execution and real-time monitoring feedback closed loop. This invention employs the above-mentioned shield tunneling full-process intelligent control method based on multi-task model coupling to achieve automatic acquisition, cross-stage integration, and real-time sharing of multi-source heterogeneous data; improve prediction accuracy and generalization ability; solve problems such as poor process coordination and insufficient control precision; avoid settlement risks; and achieve precise and intelligent management and control.