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365 results about "Tunnel safety" patented technology

Deformation dynamic prediction and early warning method for tunnel under construction based on multi-source data fusion

PCT designated stage expiredWO2025112473A1Data processing applicationsMacroscopic scaleAlgorithm
The present invention relates to a deformation dynamic prediction and early warning method for a tunnel under construction based on multi-source data fusion, and mainly solves the technical problem of large difficulty in evaluating tunnel safety states using macroscopic analysis. The present invention comprises: step 1, dividing dynamic prediction and early warning of an entire tunnel construction process into three stages; step 2, determining a safety level standard framework, and constructing an index system; step 3, constructing identification intervals of each index of an index layer in different safety states; step 4, specifying a relative weight distribution of each index; step 5, calculating distances from an interval to the identification intervals for different safety states on the basis of an interval distance formula, and generating interval distance vectors; step 6, converting the interval distance vectors into similarity vectors on the basis of a similarity formula, carrying out normalization processing, and constructing an analysis matrix; step 7, implementing same-level index data fusion by calculating a product of a relative weight vector of each index of the same layer and the analysis matrix layer by layer, and obtaining a safety level probability distribution of an entire section of a tunnel at a time point; and step 8, dynamically tracking a dominant state of a tunnel safety level, and performing dynamic prediction and early warning on the entire tunnel construction process.
Owner:SHANGHAI TONGYAN CIVIL ENGINEERING TECHNOLOGY CORP LTD

Rock stratum stress-deformation coupled tunnel safety real-time dynamic modeling method

The invention belongs to the technical field of tunnel safety monitoring, and particularly relates to a rock stratum stress-deformation coupled tunnel safety real-time dynamic modeling method, which comprises the following steps of: embedding a rock mass mechanical relationship into a neural network model as a hard constraint, and establishing explicit mapping of monitoring data and a physical field, a model parameter field is dynamically optimized by adopting ensemble Kalman filtering real-time general field detection data, and a data driving and physical mechanism collaborative deduction mechanism is designed, so that long-term prediction error accumulation is effectively inhibited; a stress field, a deformation field and other physical quantities deduced and output by the model are directly utilized to calculate disaster risk indexes with clear mechanical significance, and a physically interpretable early warning decision is realized by fusing fuzzy reasoning and multi-source risks; the technical problems of physical misalignment, weak long-term generalization and poor early warning interpretability of a data-driven model are solved.
Owner:THE FOURTH ENG CO LTD OF CHINA RAILWAYNO 20 BUREAU GRP +1

Intelligent fire safety early warning system for expressway tunnel

The invention relates to the technical field of highway tunnel safety monitoring, and discloses a highway tunnel intelligent fire safety early warning system, which comprises a data acquisition and preprocessing module used for acquiring video monitoring data, environment sensor data and vehicle positioning data in a tunnel in real time; the dynamic risk assessment module is used for constructing a risk field model based on vehicle trajectory and smoke diffusion space-time coupling; the emergency resource elastic adaptation module is used for automatically adjusting the induction screen and the fire fighting equipment according to the risk intensity; according to the method, the limitation of traditional threshold alarm is avoided, fire early warning nodes are greatly advanced through multi-source data dynamic fusion, long-term stability of a monitoring benchmark is guaranteed by utilizing an optical flow compensation and pollution self-repairing mechanism, and the self-adaptive migration of a calculation task is realized by utilizing the optical flow compensation and pollution self-repairing mechanism. And the initiative and reliability of tunnel safety prevention and control are obviously improved.
Owner:Jiangxi Jiaotong Maintenance Technology Group Co., Ltd.

Bridge and tunnel geological disaster monitoring method and system based on unmanned aerial vehicle

The invention provides a bridge and tunnel geological disaster monitoring method and system based on an unmanned aerial vehicle, and relates to the technical field of geological disaster monitoring, and the method comprises the steps: obtaining the data of a sensor carried by the unmanned aerial vehicle; performing space-time alignment and confidence coefficient weighting on the three-dimensional point cloud data, the image data and the flight attitude data through a space-time weighted covariance fusion model to obtain fusion deformation feature data; inputting the data into a wavelet-Volterra series coupling prediction algorithm, performing nonlinear deformation prediction on the key part, and outputting a future displacement prediction value; generating a geological disaster risk probability graph according to the predicted value and a preset risk threshold value; and based on the probability graph, dynamically optimizing the flight speed, height and flight path of the unmanned aerial vehicle through a Bayesian adaptive flight path planning module, and outputting a real-time monitoring path instruction. Through multi-modal fusion and dynamic path planning, the geological disaster monitoring precision and the cruising ability of the unmanned aerial vehicle are improved, and the method is suitable for safety protection of bridges and tunnels in complex terrains.
Owner:BEIJING BRIDGE RUITONG MAINTENANCE CENT

High-speed rail tunnel safety monitoring method and system

The invention provides a high-speed rail tunnel safety monitoring method and system. The method comprises the following steps: carrying out normalization processing on original time series data to construct a multi-dimensional time series data set; the multi-dimensional time sequence data set is input into a pre-trained LSTM model, the structural state of the tunnel key part in a future time window is predicted, and the structural state comprises the surrounding rock deformation trend, the lining stress peak value, the water seepage risk grade and the crack severity grade; and according to the prediction result of the structure state and a preset mapping relationship between the structure state and the early warning level, triggering hierarchical early warning, and generating a corresponding tunnel maintenance strategy instruction. According to the technical scheme provided by the invention, intelligent sensing, accurate prediction and active maintenance decision making of the tunnel structure state can be realized, and the timeliness and preventability of high-speed rail tunnel safety management are improved.
Owner:NANJING ZHITIE ELECTRIC CO LTD

Tunnel event and warning lamp acousto-optic linkage strategy generation system based on AI decision

The invention provides a tunnel event and warning lamp acousto-optic linkage strategy generation system based on AI decision, and relates to the technical field of intelligent traffic, and the method comprises the steps: collecting tunnel traffic event data, vehicle structured data, vehicle coordinates, vehicle flow, vehicle speed, and brightness data inside and outside a tunnel in real time, so as to obtain multi-source heterogeneous data; according to the multi-source heterogeneous data, taking the data matching degree, the space-time consistency and the event confidence as multi-objective optimization dimensions, constructing a weighted objective function, generating a Pareto optimal solution set through a multi-objective optimization algorithm, screening the solution set based on space-time constraint conditions, and removing conflict hypotheses; and determining the final event type and the structured event description of the three-dimensional geographic coordinates. The problems of large illumination energy consumption and poor system linkage in existing tunnel safety management are solved.
Owner:ZHEJIANG ZUOTONG INFORMATION TECH CO LTD

Tunnel base subsurface erosion disaster-caused risk assessment method and system

The invention relates to the technical field of geotechnical engineering and risk assessment, discloses a tunnel base subsurface erosion disaster-caused risk assessment method and system, and aims at solving the problems that in the prior art, due to the fact that static expert experience is relied on, the dynamic adaptability of a model is insufficient, and complex incidence relation cognition is limited. Comprising the steps that multi-source heterogeneous monitoring data are collected and preprocessed, a tunnel space relevance model based on a graph neural network is constructed, subsurface erosion process time sequence dynamics is learned in combination with a gating circulation unit network, and subsurface erosion disaster-causing risk indexes are generated; and when the risk exceeds a threshold value, deconstructing the risk factor by using an SHAP algorithm. Through adoption of the technical scheme, accurate, dynamic and interpretable evaluation of tunnel base subsurface erosion disaster-caused risks can be realized, the accuracy, timeliness, objectivity and practicability of evaluation are improved, and intelligent decision support is provided for tunnel safety operation and maintenance.
Owner:SOUTHWEST JIAOTONG UNIV

Tunnel defect identification method based on dielectric distribution diagram

The invention relates to the technical field of tunnel defect identification, in particular to a tunnel defect identification method based on a dielectric distribution diagram. According to the method, on the basis of AI rock-soil perspective radar field monitoring, gprMax simulation and laboratory electromagnetic data, a two-dimensional dielectric distribution diagram is generated through variational Bayesian inversion fusion. Through multi-scale spectral clustering and expert knowledge, a potential abnormal region is automatically identified, and then accurate classification and identification of a defect region are realized by adopting graph form constraint propagation and integrating a Transform-graph neural network model. And finally, projecting an identification result to an original image, and generating a visual defect labeling layer and a structured report. According to the invention, high-precision, automatic, visual and structured detection of tunnel structure defects is realized, the intelligent level and risk early warning capability of tunnel safety operation and maintenance are significantly improved, and the digitization and intelligent process of tunnel operation and maintenance management is promoted.
Owner:RES INST OF TSINGHUA PEARL RIVER DELTA +3

Weak surrounding rock tunnel deformation intelligent monitoring method and system

The invention discloses a weak surrounding rock tunnel deformation intelligent monitoring method and system. The monitoring method comprises the following steps: acquiring original time sequence data of tunnel deformation monitoring; decomposing the original time sequence data to obtain decomposed time sequence data; obtaining a feature vector set based on the decomposed time sequence data; the feature vector set is input into a tunnel deformation monitoring model, a tunnel deformation monitoring result is obtained, the tunnel deformation monitoring model is constructed through a support vector regression model and is obtained through training of a training set, and the training set is historical monitoring data. Through fusion application of various algorithms, the tunnel deformation monitoring precision and reliability are remarkably improved, and powerful support is provided for safe operation of the tunnel.
Owner:SHAOXING UNIVERSITY

Comprehensive intelligent monitoring decision-making system and method for overlapping shield tunnel system

The invention discloses a comprehensive intelligent monitoring decision-making system and method for an overlapping shield tunnel system. The system comprises an information acquisition system, an iterative optimization state real-time evaluation system and an intelligent maintenance decision-making system. Firstly, a preset model is trained through data such as numerical calculation; operating measured data to train a feedback model, and weighting output results of the two models to obtain a tunnel deformation predicted value; then establishing an experience overlapping tunnel safety evaluation system and an iterative optimization evaluation system, performing deep association on the tunnel state, damage and maintenance decision through association degree intelligent real-time analysis, realizing tunnel state real-time monitoring, tunnel damage real-time capturing and tunnel maintenance decision real-time updating, performing intelligent matching on maintenance measures, and performing real-time monitoring on the tunnel state, the tunnel damage and the maintenance decision. And the prediction model and the safety evaluation system are iteratively optimized according to operation effect feedback. According to the invention, real-time perception, intelligent diagnosis and maintenance of the whole life cycle overall service performance of the overlapping shield system are realized, and the long-term service quality of the overlapping shield tunnel structure is improved.
Owner:TONGJI UNIV

Point cloud data-based tunnel potential safety hazard detection method and system

The invention relates to the technical field of tunnel safety monitoring, in particular to a tunnel potential safety hazard detection method and system based on point cloud data, and the method comprises the steps: employing a three-dimensional laser scanning device, carrying out the movable scanning in a tunnel along the longitudinal direction, and obtaining the original three-dimensional point cloud data of a tunnel lining surface structure; denoising and registering the original three-dimensional point cloud data to generate an overall three-dimensional point cloud model representing the current lining structure state of the tunnel; inputting the overall three-dimensional point cloud model into a trained tunnel crack recognition neural network model, and recognizing and positioning cracks of the tunnel lining surface structure; and quantitative calculation of geometric parameters is carried out based on the identified crack, and a tunnel crack analysis report is generated. According to the method, automation, quantification and intelligentization of tunnel crack detection are realized, the three-dimensional geometric parameters of the crack can be accurately calculated, and the time sequence development of the crack can be tracked and the future trend can be predicted.
Owner:SICHUAN CHUANQIAO ENG TESTING CO LTD

Deep learning-based smart tunnel multi-modal data collaborative management method and device

The invention discloses an intelligent tunnel multi-modal data collaborative management method and device based on deep learning, and relates to the technical field of artificial intelligence, and the method comprises the steps: determining the spatial topological relation of a multi-source heterogeneous sensor in a tunnel, mapping the multi-modal data to a digital twin unified coordinate system, and carrying out the timestamp compensation, thereby obtaining a digital twin unified coordinate system; and multi-modal alignment data is formed. And extracting space-time and topological features of the data, calculating a feature correlation degree, embedding the data into a tunnel semantic space according to the feature correlation degree, evaluating environmental complexity and generating a modal weight coefficient. And carrying out safety evaluation on the joint feature vector obtained by weighting, and judging the safety state of the tunnel, thereby overcoming the limitation of single-mode monitoring in a complex environment.
Owner:SHENZHEN ESAC TECH CO LTD

Improved Transformer-based YOLO-V8 subway tunnel water leakage detection method and system

The invention relates to the technical field of subway tunnel safety detection, in particular to a YOLO-V8 subway tunnel water leakage detection method and system based on an improved Transform. The method comprises the following steps: step 02, acquiring point cloud data of a subway tunnel target section, expanding the point cloud data through projection, generating a two-dimensional water leakage image, and preprocessing the two-dimensional water leakage image; step 04, inputting the preprocessed two-dimensional water leakage image into a pre-trained water leakage detection model, and outputting a detection result based on the water leakage detection model; and 06, according to a detection result output by the water leakage detection model, determining the position and severity of the water leakage disease in the target section of the subway tunnel. According to the method, higher water leakage detection robustness identification precision can be kept in a dark and disordered subway tunnel environment, and the method has a high practical value.
Owner:POWERCHINA HUADONG ENG CORP LTD +2

Multi-sensor data fusion method based on adaptive Kalman filtering

The invention relates to the technical field of intelligent transportation, and particularly discloses a multi-sensor data fusion method based on adaptive Kalman filtering, which is suitable for vehicle trajectory tracking in a tunnel scene. The method comprises the steps of sensor deployment and data acquisition, data preprocessing and anomaly detection, multi-target data association, adaptive filtering fusion and state estimation. By introducing an anomaly detection mechanism and dynamically adjusting a filtering estimation error covariance, the influence of abnormal data such as a multipath effect and electromagnetic interference is effectively suppressed, and the tracking precision and stability of the position, speed and trajectory of the vehicle are improved. The method is remarkably superior to a traditional filtering algorithm in a complex tunnel environment, has the technical advantages of high-precision tracking, high robustness, high adaptability, high real-time performance, comprehensive functions and the like, and can remarkably improve the reliability and performance of a tunnel vehicle monitoring system; the method is suitable for multiple key fields of tunnel safety early warning, accident prevention, traffic flow optimization, emergency response and the like.
Owner:XIDIAN UNIV

Tunnel trolley supporting system and method intelligently adapting to geological conditions

The invention discloses a tunnel trolley supporting system and method intelligently adapting to geological conditions, and belongs to the technical field of tunnel safety supporting. The device comprises a supporting truss, a rigid supporting mechanism and a flexible supporting mechanism. Wherein the flexible supporting mechanism comprises an air bag which is used for preliminarily supporting the surrounding rock of the tunnel; the rigid supporting mechanism comprises a mounting frame, a plurality of air chambers are arranged in the mounting frame, and adjusting assemblies are arranged in the air chambers; the adjusting assembly comprises a piston plate and a piston rod located on the piston plate, and the free end of the piston rod penetrates through the mounting frame, then extends into the air bag and is connected with a supporting plate. The supporting plates are used for carrying out secondary supporting on the tunnel surrounding rock from the interior of the air bag, the supporting pressure of each supporting plate can be adjusted through the inflation pressure in the corresponding air chamber so as to adapt to different geological conditions, good self-adaptive capacity is achieved, and dynamic distribution of the surrounding rock pressure is achieved.
Owner:CHINA MCC17 GRP CO LTD

Traffic tunnel preventive monitoring and risk early warning system based on unmanned aerial vehicle group

The invention provides a traffic tunnel preventive monitoring and risk early warning system based on an unmanned aerial vehicle group, and relates to the technical field of traffic tunnel safety monitoring, and the method comprises the steps: laying reference mark points on the inner surface of a tunnel as monitoring nodes, collecting the crack width, surface temperature and deformation of each node through the unmanned aerial vehicle group, and calculating the crack width, surface temperature and deformation of each node; and constructing a multi-dimensional feature vector and calculating a space-time weighted distance in combination with the space coordinates and the timestamps. And adjusting a neighborhood search radius according to the tunnel curvature, identifying a risk region through a density clustering algorithm, and marking unclustered abnormal nodes as isolated risk points. And dividing risk levels based on comparison of the structure safety degree index and a dynamic threshold value, and registering a result with the BIM model to realize three-dimensional visualization. Trend early warning is triggered for an area with monotonically decreasing monitoring safety index for three continuous times, full-process automatic monitoring from data acquisition, intelligent analysis to risk early warning is realized, and the accuracy and timeliness of tunnel structure health monitoring are remarkably improved.
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY

Tunnel blasting vibration reduction method and system based on asymmetric slotting

The invention provides a tunnel blasting vibration reduction method and system based on asymmetric slotting, relates to the technical field of geotechnical engineering numerical simulation, and provides an integrated intelligent blasting vibration reduction system of asymmetric slotting structure optimization-quantum genetic algorithm collaborative optimization-model dynamic regulation. Triple fusion of a physical mechanism, a mathematical algorithm and an information technology of proximity tunnel blasting vibration control is creatively achieved, the bottleneck that a traditional method depends on experience trial and error, model static lag and vibration control and construction efficiency are difficult to consider at the same time is broken through, vibration speed control precision is improved, tunneling efficiency is improved, and meanwhile the construction efficiency is improved. The dynamic adaptability to complex geological conditions is remarkably enhanced, and a new generation of integrated solution is provided for safe, efficient and intelligent construction of the adjacent tunnel.
Owner:GUIZHOU HIGHWAY ENG GRP +1

Rock mass fracture early warning method for hydraulic tunnel

The invention discloses a rock mass fracture early warning method for a hydraulic tunnel, belongs to the technical field of tunnel safety monitoring, and can solve the problem that an existing method cannot specifically recognize isolated impact noise and rock mass real fracture signals in the construction period of the hydraulic tunnel under the background of strong noise. The method comprises the following steps: S1, acquiring an original micro-seismic signal synchronously acquired by a sensor array in a hydraulic tunnel; s2, detecting a micro-seismic event from the original micro-seismic signal to obtain an event signal set, and determining a reference channel signal according to the event signal set; s3, extracting cross correlation coefficient peak values of event signals of each channel in the event signal set and reference channel signals, and counting the number of channels of which the cross correlation coefficient peak values exceed a cross correlation coefficient threshold value as the number of coherent channels; and S4, calculating a frequency band energy ratio of the reference channel signal, and generating a rock mass fracture early warning signal when the number of coherent channels and the frequency band energy ratio meet preset conditions. The method is used for rock mass fracture early warning of the hydraulic tunnel.
Owner:NORTHWEST ENGINEERING CORPORATION LIMITED

Tunnel detection data informatization management platform based on Internet of Things

The invention discloses a tunnel detection data informatization management platform based on the Internet of Things. The tunnel detection data informatization management platform comprises a data acquisition module, a data processing module, an informatization management module, a real-time early warning module and a linkage feedback module. Through the synergistic effect of the five modules, various state data in a tunnel can be collected, the collected data are subjected to standardization processing and fusion association, the data standardization degree is improved, data islands are eliminated, and information can be efficiently integrated, so that the sharing level and the deep analysis and utilization level are improved; the method is advantaged in that effective decision support is provided for tunnel management operation, effective processing and analysis can be further carried out on integrated data, key information can be rapidly and accurately extracted from massive detection data, comprehensive evaluation and prediction of the tunnel structure safety state are facilitated, and increasing tunnel safety operation requirements are satisfied.
Owner:ANHUI SANLIAN UNIV +2

Tunnel safety assessment method and system based on deep learning technology

The invention discloses a tunnel safety assessment method based on a deep learning technology, and the method comprises the steps: collecting safety monitoring data in a tunnel, and carrying out the preprocessing of the collected safety monitoring data; outputting time sequence characteristics based on a long short-term memory (LSTM) network and / or a Transform model of a converter; local space feature extraction is carried out based on a convolutional neural network CNN; outputting global structure features based on a graph neural network GNN; performing joint feature extraction on the time sequence features, the local spatial features and the global structure features based on a multi-input deep neural network DNN and / or a gated loop unit GRU model, and outputting joint features; and classifying the joint features based on a support vector machine (SVM) and / or the DNN, and outputting a safety assessment level of the tunnel. Through effective fusion of multiple deep learning models, multi-dimensional data features can be comprehensively considered, and the accuracy and real-time performance of tunnel safety assessment are improved.
Owner:CHONGQING SHENGSHI TONGCHUANG CONSTR CO LTD

Shield tunnel segment relative displacement monitoring system and calculation method

The invention discloses a shield tunnel segment relative displacement monitoring system and a calculation method, and relates to the technical field of civil engineering. The system comprises an optical fiber fixing point, a zigzag optical fiber, an optical fiber demodulator and a computer, the optical fiber fixing point is used for fixing an optical fiber at a set position on the tunnel segment; the zigzag optical fibers are arranged in three optical fiber arrangement modes to form an optical fiber monitoring network of two parallel optical fibers at the upper part and the lower part of the segment and a V-shaped optical fiber in the middle; the optical fiber demodulator is respectively connected with the zigzag optical fibers in the three layout forms and the computer, and is used for acquiring the strain magnitude of the three zigzag optical fibers in the tunnel deformation process, obtaining the length variation of the optical fibers among the optical fiber fixing points, and calculating the opening amount, the slab staggering amount and the corner deformation among the segments. According to the invention, opening, slab staggering and corner deformation of tunnel segments can be comprehensively monitored in real time, so that tunnel risks and hidden dangers can be monitored more comprehensively, and the safety and stability of a tunnel are ensured.
Owner:ZHEJIANG UNIV CITY COLLEGE

Strong noise tunnel point cloud monitoring method based on improved RANSAC and dynamic residual

The invention relates to the technical field of tunnel safety monitoring, in particular to a strong noise tunnel point cloud monitoring method based on improved RANSAC and dynamic residual, which comprises the following steps: firstly, collecting two-dimensional point cloud data of a cross section of a tunnel, and performing attitude correction through ground baseline fitting to unify a coordinate system; afterwards, de-noising is carried out by adopting a vault-dominated improved RANSAC algorithm, and the algorithm effectively filters out strong noise and retains key lining points through constraint sampling, model geometric constraint and dynamically adjusted residual error threshold values; and performing nonlinear least square complete circle fitting on the denoised point cloud, and accurately extracting circle center and radius parameters. And finally, based on the absolute deviation, the relative deviation, the abrupt change increment and other multi-dimensional indexes of the radius, safety evaluation and early warning are carried out in combination with a standard threshold system. According to the invention, the robustness and precision of tunnel contour monitoring under complex working conditions of strong noise, equipment installation deviation and the like are obviously improved.
Owner:YUNNAN YUNLING EXPRESSWAY BRIDGE ENG CO LTD +1

Tunnel fire-fighting emergency linkage method and system based on digital twinning

The invention relates to the technical field of tunnel safety and emergency management, and discloses a tunnel fire-fighting emergency linkage method and system based on digital twinning, and the method comprises the steps: collecting the multi-modal data of a fire environment through a plurality of sensors, and constructing a global situation understanding model; processing the environment state and the crowd behavior characteristics by adopting a multi-head attention network; dynamically adjusting the attention weight of the crowd feature dimension by applying a situation-enhanced attention mechanism; constructing a psychological environment interaction model, and predicting crowd behavior evolution in different fire scenes; generating a situation-adaptive multi-level evacuation guidance strategy tree; real-time effect evaluation is carried out, and system overall optimization is realized through a digital twinborn model; according to the method, the environment state and the crowd behavior characteristics are processed at the same time through the multi-head attention network, the internal correlation between the environment factors and the crowd behaviors can be understood, and therefore comprehensive and accurate cognition is formed on the tunnel fire scene.
Owner:JIANGSU DESHANG TECH DEV CO LTD

Tunnel emergency telephone and broadcast integrated management method, system and product

The invention relates to the technical field of tunnel safety communication, in particular to a tunnel emergency call and broadcast integrated management method, system and product, and the method comprises the steps: obtaining emergency call information which comprises emergency call information and an emergency field image; identifying an emergency type corresponding to the emergency call information, and judging whether broadcast assistance is needed or not based on the emergency type; if yes, determining an emergency area based on the emergency call information, and generating broadcast prompt information and tunnel indicator light control information based on the emergency call information and the emergency area; and based on the tunnel indicator light control information and the broadcast prompt information, intervening an emergency occurring in the emergency area. According to the invention, the response efficiency to the emergency in the tunnel can be improved.
Owner:J&R TECHNOLOGY LTD

Tunnel inverted arch structure

The utility model provides a tunnel inverted arch structure which comprises a corrugated steel plate layer, a secondary lining layer, a frame column layer and a pavement layer which are sequentially arranged from bottom to top, and the corrugated steel plate layer is provided with a grouting hole and an anchor rod hole for a system anchor rod to penetrate through. Foam concrete is injected into an interlayer space between the corrugated steel plate layer and the surrounding rock through the grouting holes to form a foam concrete layer, the system anchor rod comprises an anchoring end and a locking end which are oppositely arranged in the extending direction of the system anchor rod, the anchoring end penetrates through the anchor rod hole to be anchored into the surrounding rock, and the locking end is connected with the corrugated steel plate layer. The secondary lining layer is arranged on the inner wall of the corrugated steel plate layer, the bottom of the frame column layer is pre-buried in the secondary lining layer, and the pavement layer is laid on the top of the frame column layer. According to the novel inverted arch structure, particularly, a traditional inverted arch backfilling layer is arranged to be of a frame layer structure, the use amount of concrete can be greatly reduced, the safety and stability of a tunnel are guaranteed, meanwhile, the material cost and the construction cost are reduced, and economic benefits are improved.
Owner:HUNAN PROVINCIAL COMM PLANNING SURVEY & DESIGN INST CO LTD

Tunnel safety detection method based on unmanned aerial vehicle communication and charging facility integration

The invention provides a tunnel safety detection method based on unmanned aerial vehicle communication and charging facility integration, and relates to the technical field of tunnel safety detection. According to the method, a signal relay module, a wireless charging module and a telescopic take-off and landing platform are integrated through integrated equipment and are embedded into the side wall of a tunnel for deployment, and the problems that a traditional split type device is unstable in signal, insufficient in endurance, large in occupied space and the like are solved. After receiving the inspection task issued by the central management platform, the unmanned aerial vehicle flies along a preset path and collects environment data in real time; when the electric quantity is insufficient, the platform dynamically dispatches the nearest integrated equipment, the unmanned aerial vehicle accurately lands to the telescopic take-off and landing platform through laser radar and visual identification, the wireless charging module starts charging, and meanwhile the signal relay module returns data. After charging is completed, the platform generates a new task instruction, and the unmanned aerial vehicle continues to execute remaining inspection.
Owner:CHINA RAILWAY DESIGN GRP CO LTD +2

Design method of anti-erosion tunnel parameters

The invention discloses a design method for anti-erosion tunnel parameters. The design method comprises the steps that tunnel environment information and a tunnel safety index range are acquired; determining a catastrophe risk of the tunnel based on the tunnel environment information; determining a tunnel structure parameter range based on the catastrophe risk of the tunnel; determining tunnel structure parameters based on the tunnel structure parameter range; determining tunnel safety indexes based on the tunnel structure parameters; and determining or adjusting tunnel structure parameters based on a comparison result of the tunnel safety index and the tunnel safety index range. According to the design method of the anti-erosion tunnel parameters, blindness and randomness of composite corrosion and erosion surrounding rock tunnel structure parameter values are avoided, the tunnel rigidity and durability are effectively guaranteed, and the later tunnel structure degradation risk is reduced.
Owner:THE NO 6 ENG CO LTD OF CHINA RAILWAY 20TH BUREAU GRP +2

Tunnel safety supporting device

The utility model discloses a tunnel safety supporting device which comprises a steel bar net face arranged on the inner wall of a tunnel, a plurality of first anchor rods supporting the steel bar net face, arch frames, second anchor rods forming hoops for the arch frames and clamping plates fixing the adjacent arch frames. The end, used for splicing, of the steel frame is provided with an installation face used for fixed connection, the second anchor rods are installed on the two sides of the steel frame in pairs and anchored on the inner wall of the tunnel in an inclined mode, the second anchor rods are provided with bent parts, and the bent parts are welded to the steel frame. According to the technical scheme, the inclined anchor rods are arranged at multiple positions of the lagging jack to lift and fix the whole, and the clamping plates between the lagging jacks can further improve the rigidity and stability of the lagging jack in the longitudinal direction of the tunnel.
Owner:广西柳梧铁路有限公司

Dynamic clustering evaluation system for highway tunnel lining diseases

The invention relates to the technical field of highway tunnel lining disease evaluation, and discloses a highway tunnel lining disease dynamic clustering evaluation system, which comprises a data acquisition module used for acquiring multi-dimensional disease data of a tunnel lining and preprocessing the data so as to construct a disease dynamic matrix. And the data analysis module is connected with the data acquisition module, establishes a fuzzy similar matrix among the disease space units based on the disease dynamic matrix, generates a closed similar matrix in combination with a transitive closure algorithm, and further analyzes the closed similar matrix through a dynamic clustering algorithm to obtain a disease clustering result. And the data output module is connected with the data analysis module, constructs a comprehensive evaluation model according to the clustering result and the historical maintenance data, and finally determines and outputs the risk score and the maintenance priority of the tunnel lining disease. According to the invention, tunnel disease identification precision and maintenance resource configuration efficiency are improved, and safe operation of the tunnel is guaranteed.
Owner:NANCHANG HANGKONG UNIVERSITY

Tunnel blasting vibration monitoring method and system based on image recognition

The invention provides a tunnel blasting vibration monitoring method and system based on image recognition, and relates to the technical field of tunnel safety monitoring, and the method comprises the steps: obtaining a geological parameter set of a tunnel target region and an image sequence of a blasting moment; carrying out fluctuation analysis on geological parameters to obtain vibration characteristic data reflecting rock mass non-uniform characteristics, synchronously carrying out optical flow analysis and region identification processing on an image sequence, respectively generating a displacement vector field and an identification deformation region, carrying out spatial association on the vector field and a micro-deformation region to form vibration field data with rock mass structure characteristics, and carrying out vibration field identification processing on the vibration field data; and coupling with the vibration characteristic data to reconstruct a three-dimensional propagation path, and finally identifying a damage risk area of the tunnel target area based on an energy distribution pattern on the path. According to the method, the damage risk identification precision of the tunnel rock mass under blasting vibration is improved.
Owner:CHINA RAILWAY 19 BUREAU GRP CO LTD +1