Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
33 results about "Tunnel under construction" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Near-field tunnel blasting vibration dynamic strain testing method for tunnel under construction
InactiveCN110006335AReduce the impact of huge blasting vibrationReduce distractionsElectrical/magnetic solid deformation measurementReal-time dataBlasting vibration
The invention provides a near-field tunnel blasting vibration dynamic strain testing method for a tunnel under construction. The method comprises the following steps: S1, arranging testing points on aprimary support of the tunnel, and polishing the surfaces of the testing points; S2, adhering strain gages to the surface of each testing point, leading out connecting wires, and coating the outsideof each strain gage with protection glue for fixation; S3, arranging one temperature compensation gage for each strain gage, adhering each temperature compensation gage onto a compensation block, leading out a connecting wire, and coating the outside of each temperature compensation gage with protection glue for fixation; S4, connecting the strain gages and the temperature compensation gages withcorresponding bridge boxes through data cables, connecting the strain gages and the temperature compensation gages in the corresponding bridge boxes in a half-bridge manner, and carrying out vibrationattenuation processing; S5, reinforcing joints with the data cables; S6, connecting the bridge boxes with a dynamic signal acquisition device, and transmitting real-time data acquired by the dynamicsignal acquisition device to a computer; and S7, grounding the dynamic signal acquisition device. The method provided by the invention has the advantage that near-field tunnel blasting vibration dynamic strains of the tunnel under construction can be accurately tested.
Owner:THE 4TH ENG OF CHINA RAILWAY 5TH ENG GROUP +2
Tunnel steel arch recognition method based on three-dimensional imaging
ActiveCN111027484ADetails involving processing stepsManufacturing computing systemsPoint cloudAlgorithm
The invention discloses a tunnel steel arch recognition method based on three-dimensional imaging. The method comprises the following steps: data preprocessing, point cloud coordinate system correction, radial filtering, steel arch feature point extraction, steel arch extraction and the like. Through processing of three-dimensional point cloud data, a steel arch in a tunnel under construction canbe accurately recognized, and the method has high practical engineering significance in detection of the steel arch installation position and improvement of tunnel engineering machinery automation.
Owner:CENT SOUTH UNIV
Conversion permeability coefficient-based method for controlling tunnel discharge by regions
ActiveCN105528492AThe method steps are simpleReasonable designDesign optimisation/simulationDrainageWater levelPermeability coefficient
The invention discloses a conversion permeability coefficient-based method for controlling tunnel discharge by regions. The method comprises the following steps: dividing a tunnel under construction into a plurality of tunnel segments along a longitudinal extension direction from back to front, and respectively performing tunnel discharge control on the tunnel segments, wherein methods for controlling the tunnel discharge of all the tunnel segments are identical; the step of performing the tunnel discharge control on any tunnel segment comprises the following steps: I: predicting the tunnel discharge; II: calculating a lining conversion permeability coefficient; III: determining tunnel control discharge; IV: determining a water plugging and discharge limiting water level control standard; V: judging a water plugging and discharge limiting region; VI: performing water plugging and discharge limiting: grouting the outer side of a lining of each tunnel segment by adopting a grouting system and forming a grouting circle so as to perform water plugging and discharge limiting on the tunnel segment. The method disclosed by the invention is simple in steps, reasonable in design, convenient to implement and has a good using effect; the tunnel discharge of an ecologically sensitive region is effectively controlled by regions and by combining with the reasonable water plugging and discharge limiting water level control standard.
Owner:CCCC FIRST HIGHWAY CONSULTANTS
Intelligent monitoring, measuring and early warning system and method for construction safety of tunnel under construction
PendingCN114485570AReduce lossesEnsure safetyAnalysing solids using sonic/ultrasonic/infrasonic wavesPhotogrammetry/videogrammetryInformatizationEarly warning system
The invention discloses an intelligent monitoring, measuring and early warning system and method for construction safety of a tunnel under construction. The system comprises an intelligent photographing and camera shooting module, an advanced geological forecasting module, a monitoring and measuring module, an environment monitoring module, a wireless transmission module, a data comprehensive analysis module and an intelligent early warning module. According to the system, the informatization and automation degree of safety early warning management of tunnel construction under construction is improved, and the management and control difficulty of tunnel construction safety risks is reduced; and the level of tunnel safety management is improved. Through integration of seven modules, mutual correlation and mutual combination of data of each module, comparative analysis and comprehensive evaluation of monitoring data of each module, the system can greatly improve the precision of the monitoring data, dynamically feed back the monitoring data in real time and guide construction, and reduce the monitoring cost to the greatest extent. Intelligent early warning of tunnel construction safety is achieved, potential safety hazards and the probability of occurrence of safety accidents are reduced, casualties are avoided, and potential safety hazards are eliminated.
Owner:中交路桥科技有限公司
Tunnel deformation real-time monitoring method and device
ActiveCN112556600AIntensive monitoring pointsUsing optical meansElasticity measurementMonitoring siteMonitoring methods
The invention discloses a tunnel deformation real-time monitoring method and a device, and the method comprises the steps: S1, erecting a plurality of structured light sources in an unstable region ofa tunnel structure which needs to be monitored, erecting a monitoring terminal in a relatively stable region of the tunnel structure, and enabling the monitoring terminal to communicate with the plurality of structured light sources; S2, adopting the monitoring terminal to observe all structured light in an unstable area of the tunnel structure and obtain a structured light curve in real time; and S3, adopting a data processing unit to analyze the structured light imaging change, detect the tunnel deformation degree and offset distance in real time, and monitor tunnel single-section settlement, convergence, multi-section overall settlement and other diseases. The method is suitable for tunnels under construction and operating tunnels, monitoring points are dense, and tunnel deformation can be monitored in real time.
Owner:NANJING PIONEER AWARENESS INFORMATION TECH CO LTD
Tunnel surrounding rock geological classification information prediction method based on Bayesian neural network
ActiveCN112529330AQuick access to statistical featuresImprove universalityMathematical modelsForecastingPattern recognitionPredictive methods
The invention relates to a tunnel surrounding rock geological classification information prediction method based on a Bayesian neural network, and the method comprises the steps: collecting surrounding rock geological classification information of an existing tunnel and a fine collection tunnel under construction, carrying out the normalization processing, and determining the probability distribution of the tunnel surrounding rock geological classification information through Monte Carlo random analysis; preliminarily determining the number of nodes of an input layer, a hidden layer and an output layer of the Bayesian neural network model so as to establish a Bayesian neural network prediction model by utilizing the existing tunnel engineering data with similar geological information; andupdating the prediction model in real time by utilizing tunnel surrounding rock geological classification information newly obtained in the excavation process along with continuous forward advancing of the working face, and further gradually improving the prediction precision of the model. The prediction method provided by the invention has good universality and high prediction precision, can makeeffective judgment on geological classification information of an unknown section in front of tunnel excavation in advance, and is suitable for prediction of geological classification information ofmost tunnel surrounding rocks.
Owner:SOUTHEAST UNIV
Ventilation equipment coordination control system for tunnel construction
InactiveCN103838197ASimple structureLow input costTunnel/mines ventillationTotal factory controlControl systemStop time
Owner:XIAN ZHONGZHI HUIZE PHOTOELECTRIC TECH
Cleaning device and system for video surveillance camera for tunnel under construction
InactiveCN111744920AEasy to cleanTelevision system detailsFouling preventionVideo monitoringSurveillance camera
The invention provides a cleaning device and system for a video surveillance camera for a tunnel under construction. The cleaning device comprises a film rolling unit and a film driving unit, whereinthe film rolling unit comprises a first reel, a second reel, and a transparent film, the first reel and the second reel can be rotatably mounted on the opposite sides of the video monitoring camera, one end of the transparent film is wound around the first reel and the other end of the transparent film covers a lens of the video monitoring camera and is wound around the second reel; the film driving unit is connected with the first reel and the second reel and is used for receiving a lens cleaning instruction and controlling a film rolling unit to move according to the lens cleaning instruction, so that the first reel rotates a clean transparent film to the front of the lens, and the second reel rolls a dirty transparent film away. A user can remotely control the cleaning device to roll the transparent film before the video monitoring camera for the tunnel under construction, so that the lens can be kept clean, thereby ensuring clear shooting of a security monitoring screen.
Owner:CHINA TRANSPORTATION HEAD NEW TECH CO LTD
A method for measuring the convergence deformation of a circular tunnel
The invention relates to a method for measuring circular tunnel convergence deformation. The method includes the steps of S1, by a three-dimensional laser scanner, acquiring the working base point coordinates and tunnel point cloud of each observation station; S2, using working base points as splicing datum points to merge the tunnel point cloud into a unified reference coordinate system, and segmenting into point cloud of a multi-ring pipe joint according to the pipe joint; S3, fitting the point cloud of a single-ring pipe joint into a cylindrical face according to an improved cylindrical face fitting algorithm, extracting pipe joint axis point coordinates, projecting the cylindrical face to a plane along the axis direction of the pipe joint to obtain a two-dimensional tunnel point cloud contour line, and fitting into an ellipse according to an ellipse fitting algorithm; S4, expanding the ellipse into a three-dimensional elliptic cylindrical surface along the axis so as to obtain the three-dimensional convergence deformation of a whole tunnel. Compared with the prior art, the method has the advantages that the longitudinal axis and convergence deformation of the tunnel under construction and the tunnel under operation can be acquired, monitoring point laying is not needed, high measuring efficiency is achieved, and comprehensive monitoring data is provided to tunnel construction and operation.
Owner:TONGJI UNIV
Grouting and water plugging reinforcement material for water-rich bedrock tunnel leakage water and application of grouting and water plugging reinforcement material
PendingCN113944484ARaise the level of treatmentGood injectabilityUnderground chambersTunnel liningSoil scienceEngineering
The invention discloses a water-rich bedrock tunnel leakage water grouting and water plugging reinforcing material and application thereof. The reinforcing material is formed by mixing 30-40 parts by mass of CFB fly ash, 0-5 parts by mass of Marithan, 5-15 parts by mass of cement and 50 parts by mass of water. The grouting and water plugging reinforcement material for the water-rich bedrock tunnel leakage water, prepared by the invention, has the advantages of good groutability and durability, high material strength, low water permeability coefficient and environmental protection. The application method has the advantages of high operability, high efficiency, economy and the like. According to the method, the treatment level of leakage water of the water-rich bedrock tunnel can be greatly improved, the treatment capacity of water diseases of the water-rich bedrock tunnel under construction and operation is fully improved, the service life of the water diseases of the water-rich bedrock tunnel under construction is fully prolonged, the lining of the water-rich bedrock tunnel can be safely and stably operated for a long time, and good economic, social and ecological benefits are generated.
Owner:山西交科岩土工程有限公司 +2
Tunnel deformation monitoring system and method based on machine vision self-adaption
PendingCN113776449AGuaranteed image qualityGuaranteed accuracyUsing optical meansMachine visionImaging quality
The invention provides a tunnel deformation monitoring system and method based on machine vision self-adaption. The system comprises a machine vision camera, an adjustable infrared light supplementing lamp, a passive light reflecting target, power distribution network equipment, an alternating current power supply line, a direct current power supply line, a first communication line and a second communication line. A lens of the machine vision camera faces the tunnel construction excavation direction, and is fixedly installed behind the tunnel section. The system and the method have the following advantages: (1) the pre-capturing function is performed through the machine vision camera, the brightness of the light supplementing lamp and the exposure parameters of the camera are adaptively adjusted, the quality of the image can be adaptively adjusted under different conditions in the tunnel under construction, the imaging quality of the image for displacement identification is ensured, and the identification accuracy of a target positioning algorithm is further ensured; and (2) the passive target is adopted as a carrier for monitoring and transmitting tunnel structure deformation, and power supply wiring or battery power supply of the target does not need to be considered, so that the construction difficulty and cost of tunnel field implementation can be greatly reduced.
Owner:YUNNAN AEROSPACE ENG GEOPHYSICAL SURVEY INSPECTION
Full-automatic tunnel wet spraying state detection method based on three-dimensional laser radar
ActiveCN112799088AGuarantee the construction qualitySolve problems such as lossImage enhancementImage analysisCluster algorithmPoint cloud
The invention discloses a full-automatic tunnel wet spraying state detection method based on a three-dimensional laser radar. The method comprises the following steps of firstly, acquiring surface point cloud information of a tunnel under construction by using a three-dimensional laser radar, and then carrying out three-stage preprocessing on point cloud data, completing tunnel point cloud pose correction by using three times of projection; combining a random sampling consistency algorithm with a Euclidean clustering algorithm to complete extraction of tunnel surface point cloud, and filtering obstacles and ground point cloud data; compensating the point cloud data in combination with an adaptive threshold method and a segmented cubic Hermite interpolation algorithm; and finally, establishing a tunnel rock surface wet spraying state detection model, and solving a solution of the model in combination with a Gaussian-Newton iteration method. According to the method, a tunnel surface wet spraying state of the oval tunnel can be automatically detected, the to-be-wet-sprayed depth of each point on the tunnel surface is calculated, manual intervention is not needed in the whole process, and the method can be applied to state detection of tunnel wet spraying concrete and solution of the to-be-wet-sprayed depth.
Owner:CENT SOUTH UNIV
A Construction Method for Excavation and Support of Existing Tunnels Underpassing Obliquely
ActiveCN111764924BImprove construction safetyDecrease productivityMining devicesUnderground chambersArchitectural engineeringTunnel under construction
The invention discloses a construction method for excavation and support of an existing tunnel that passes under an oblique intersection, which is applied to the oblique section generated between the tunnel under construction and the existing tunnel for excavation and support construction; Divide the oblique section generated by the tunnel under construction and the existing tunnel into excavation sections, and select one of the excavation sections as the test section, and gradually excavate the test section step by step. For excavation and support work, different construction methods can be adopted for each section in a more targeted manner to improve construction safety.
Owner:RANKEN RAILWAY CONSTR GROUP
Method for detecting and evaluating irregularity of temporary transportation track of overlong TBM (Tunnel Boring Machine) tunnel under construction
PendingCN114275003AEasy to detectRealize evaluationRailway inspection trolleysRailway auxillary equipmentDriver/operatorIn vehicle
The invention provides a method for detecting the irregularity of a temporary transportation track of an overlong TBM (Tunnel Boring Machine) tunnel under construction, which is applied to a track irregularity detection evaluation system and aims to solve the problem of low detection capability of track irregularity detection in the prior art, and comprises the following steps of: (1) running a rail train with a sensor on an initially paved temporary track according to different speeds; acquiring amplitudes of vehicles passing through track joints under different vehicle speed working conditions as initial values, and establishing a standard database; (2) acquiring data such as speed, amplitude, mileage and the like during operation of the rail train, comparing and analyzing the data with a standard database, and evaluating the irregularity of each contact, each section of rail and each kilometer of rail; and (3) reminding a driver of vehicle deceleration through a vehicle-mounted display device, and reminding a manager of temporary track maintenance through a background data report. The method has the advantages that real-time detection and evaluation can be achieved through double-track measurement, manual inspection is reduced, the detection frequency is improved, and the temporary railway vehicle driving risk is effectively reduced.
Owner:XINJIANG IRTYSH RIVER BASIN DEV ENG CONSTR ADMINISTRATION +1
A kind of upper soft lower hard stratum tunnel support structure and construction method thereof
ActiveCN106437781BReduce deformation effectsAdaptableUnderground chambersTunnel liningStructure of the EarthEngineering
The invention relates to the technical field of tunnel construction, in particular to an upper-soft lower-hard stratum tunnel supporting structure and a construction method thereof. The structure comprises a pipe roofing structure and a supporting structure; the pipe roofing structure comprises multiple steel pipes which form an arch structure arranged on the upper portion of a tunnel in a covering mode; two steel plates between every two adjacent steel plates are arranged in a parallel and spaced mode in the radial direction of the tunnel, a space between the every two steel plates is communicated with internal spaces of the corresponding steel pipes through mounting grooves formed in the side walls of the steel pipes, and the steel plates and the steel pipes together form arch communication cavities; concrete is poured into the communication cavities; the upper end of the supporting structure is supported on the two steel pipes at the bottommost end. By means of the arch pipe roofing structure, the strength of a soft soil layer is enhanced, the problem that a soft soil layer tunnel under construction is prone to collapse is solved, by means of the primary support and secondary lining structure, the flexibility of construction is enhanced, the influence on the earth surface is reduced, the construction safety is high, the construction efficiency is improved, and great popularization value is achieved.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
Environment-friendly cleaning vehicle for tunnel under construction and operation method
PendingCN114109433ALow costAchieve the purpose of cleaningMining devicesTunnelsHigh pressure waterVisual recognition
The invention discloses an environment-friendly cleaning vehicle for a tunnel under construction and an operation method, belongs to the technical field of shield tunnel construction equipment, and solves the problems of low cleaning efficiency and high labor cost due to the fact that muck falling from muck during manual tunnel construction is cleaned in the prior art. According to the technical scheme, a motor tractor is connected to the front end of the environment-friendly cleaning vehicle, the environment-friendly cleaning vehicle comprises a chassis assembly, and a visual recognition system, a high-pressure water system, a vacuum system, a slurry rotating system and an electric control system are arranged on the chassis assembly; and the electric control system is electrically connected with the visual identification system, the high-pressure water system, the vacuum system and the slurry transfer system respectively. The invention aims to reduce the workload and the labor intensity of field operators, save the labor cost for cleaning the muck in the tunnel under construction, shorten the operation period and create better economic benefits and social benefits for users.
Owner:CHINA RAILWEY ENG SERVICE CO LTD
Tunnel construction ventilation monitoring system
InactiveCN104514575AReasonable designSimple structureMining devicesTunnel/mines ventillationRemote controlMonitoring system
The invention discloses a tunnel construction ventilation monitoring system. The tunnel construction ventilation monitoring system comprises a smoke dust concentration meter arranged on the peripheral side of a face of a tunnel under construction, a harmful gas concentration detection unit arranged on the peripheral side of the face of the tunnel under the construction, an air speed monitor used to detect air speed at a pipe orifice of a flexible air pipe installed in the tunnel under the construction, an air pipe orifice size automatic regulating device which moves back and forth along the longitudinal extension direction in the tunnel under the construction, an upper monitor machine arranged on the outer side of the tunnel under the construction and a handheld remote control terminal carried by a tunnel ventilation constructor, wherein the smoke dust concentration meter, the harmful gas concentration detection unit and the air speed monitor are all connected with the upper monitor machine. The tunnel construction ventilation monitoring system is simple in structure, reasonable in design, simple and convenient to use, and good in use effect, can automatically monitor concentration of blasting fume and harmful gas around the face of the tunnel, and can correspondingly adjust the size of the pipe orifice of the flexible air pipe according to a monitor result so as to correspondingly adjust the air speed at the pipe orifice of the flexible air pipe.
Owner:XIAN KUOLI MACHANICAL & ELECTRICAL TECH
A zonal control method of tunnel drainage based on converted and converted permeability coefficient
ActiveCN105528492BThe method steps are simpleReasonable designDesign optimisation/simulationDrainageConversion coefficientsEngineering
Owner:CCCC FIRST HIGHWAY CONSULTANTS
Low-channel progressive construction tunnel entrance method of subway mined tunnel
InactiveCN104847366ALower vertical heightReduce disturbanceTunnelsTunnel under constructionTunneling direction
The invention relates to a low-channel progressive construction tunnel entrance method of a subway mined tunnel. The method comprises the following steps that: (1), a structural outline of a tunnel under construction is determined according to a using function requirement and progressive portals with the gradually changed heights are manufactured according to construction procedures; (2), expanding excavation is gradually carried out along an effective main track tunnel structural outline at the direction perpendicular to a main track tunnel at the tunnel under construction; and one progress portal is arranged timely when excavation is carried out once until the excavation and support of the part are completed; and (3), in the progress portals, a main track tunnel support portal is constructed along the main track tunnel outline, thereby supporting the progress portals perpendicular to the main track tunnel; and then redundant vertical support rods of the progress portals at the main track tunnel direction are cut and removed. The method has the following beneficial effects: the low-channel progressive tunnel entrance way is used and the tunnel under construction does not need to be elevated and excavated, thereby reducing the vertical height of the tunnel under construction, minimizing the disturbance on the undisturbed formation stratum, and obviously improving safety of the tunnel excavation construction work and the like.
Owner:BEIJING URBAN CONSTR DESIGN & DEV GRP CO
Wireless monitoring system in tunnel under construction
InactiveCN106525649AEnsure safetyReal-time monitoring dynamicsTransmission systemsClosed circuit television systemsControl systemMonitoring system
The invention relates to a wireless monitoring system in a tunnel under construction. The wireless monitoring system in the tunnel under construction comprises a monitoring head, a receiver, an alarm, a wireless transmitter, an air density sensor and a control system, wherein the monitoring head is arranged in the tunnel; the receiver and the alarm are arranged in a monitoring room out of the tunnel; the wireless transmitter is arranged on a helmet and is matched with the receiver; the air density sensor is arranged in the wireless transmitter; the control system is arranged in the monitoring room out of the tunnel and processes information received by the receiver; and if air density is greater than set temperature, the alarm can be controlled to give an alarm. In the wireless monitoring system, the wireless transmitter transmits the air density in the tunnel to the control system in time, when the air density in the tunnel is over large, the alarm will give an alarm to remind people in the tunnel of evacuating under emergency, and life safety is guaranteed.
Owner:陈飞
A device and method for automatically cutting the interior of surrounding rock for small-section expansion of tunnels under construction
ActiveCN112431598BImprove impact performanceImprove crushing effectBlastingTunnelsRotational axisMilling cutter
Owner:CCCC FOURTH HIGHWAY ENG
Method of transferring contact suspension for additionally building open-cut tunnel on electrified railway operating line
Owner:CHINA CIVIL ENG CONSTR CORP
A Construction Method for Removing Temporary Inverted Arches of Existing Tunnels Crossing Under Obliquely
ActiveCN111764923BImprove construction safetyDecrease productivityMining devicesUnderground chambersArchitectural engineeringTunnel under construction
The invention discloses a construction method for dismantling a temporary inverted arch of an existing tunnel that passes under an oblique intersection, which is applied to the oblique section generated between the tunnel under construction and the existing tunnel to carry out the dismantling construction of the temporary inverted arch; The force of the tunnel is different. The oblique section between the tunnel under construction and the existing tunnel is divided into various demolition sections, and one of the demolition sections is selected as the test section, and the demolition work is carried out step by step on the test section. , different construction methods can be adopted for each section in a more targeted manner to improve construction safety.
Owner:RANKEN RAILWAY CONSTR GROUP
A settlement control method for subway tunnels passing through existing operating lines
ActiveCN112031801BPrevent subsidenceImprove stabilityUnderground chambersMaterial fill-upPipeUltimate tensile strength
Owner:BEIJING CHINA COAL MINE ENG CO LTD
A method and device for real-time monitoring of tunnel deformation
ActiveCN112556600BIntensive monitoring pointsImage enhancementImage analysisMonitoring siteMonitoring methods
Owner:NANJING PIONEER AWARENESS INFORMATION TECH CO LTD
Construction method for removing temporary inverted arch of down-traversing obliquely crossed tunnels
ActiveCN111764923AImprove construction safetyDecrease productivityMining devicesUnderground chambersArchitectural engineeringTunnel under construction
Owner:RANKEN RAILWAY CONSTR GROUP
A construction method of water-rich loess tunnel passing through loess rush valley
ActiveCN110792440BThe method steps are simpleReasonable designUnderground chambersTunnel liningTunnel under constructionTunnel construction
The invention discloses a construction method for a water-rich loess tunnel passing through a loess flushing valley. The constructed loess tunnel includes a tunnel entrance section, a flushing valley shallow-buried tunnel section and a front tunnel section. The flushing valley shallow-buried tunnel section is connected to the tunnel entrance Between the entrance section and the front tunnel section; during the construction of the loess tunnel to be constructed, the steps include: 1. construction of the entrance section of the tunnel; 2. construction of the tunnel section buried shallowly in the valley; The method of the invention has the advantages of simple steps, reasonable design, convenient construction, and good application effect. According to the different formations of the tunnel entrance section, the shallow-buried tunnel section and the front tunnel section, a reasonable advanced reinforcement method and a tunnel base reinforcement method are selected for the tunnel. The soil reinforcement can effectively ensure the safety and reliability of the excavation process of the rich water large-section loess tunnel, and can effectively improve the stability of the excavated and formed tunnel hole.
Owner:CHINA RAILWAY 20 BUREAU GRP CORP LTD +3
Tunnel three-dimensional reconstruction imaging method and system and application thereof
PendingCN112763516AIntuitively visibleLow identification difficultyMaterial analysis using wave/particle radiationUsing wave/particle radiation meansEngineeringArtificial intelligence
The invention discloses a tunnel three-dimensional reconstruction imaging method and system and application thereof. The method comprises the steps of: carrying out high-precision and multi-section scanning on each detection unit region divided on a tunnel main body structure through precise high-frequency electromagnetic waves; converting acquired electromagnetic wave signals into digital signals; generating a digital matrix based on the digital signals through a computer; and a three-dimensional image can be formed. The quality of the tunnel structure can be judged more visually and accurately. The method and system have the characteristics of short scanning time, convenience, rapidness, high-density resolution, clear images, three-dimensional directness, capability of generating high-precision sectioning planes in various directions and the like; the method and system can be used for construction quality evaluation of a tunnel under construction, three-dimensional nondestructive detection of an operated tunnel and building information model acquisition of the tunnel, can greatly improve the accuracy and efficiency of detection work, lower the risk of the detection work; and a three-dimensional image reconstructed after detection has the advantages of being visual and low in identification difficulty; and an important guarantee is provided for engineering quality and operation safety of traffic infrastructure.
Owner:铁科润诚成都工程技术咨询有限公司
Construction method for underneath passing of three-hole highway tunnel through existing railway
InactiveCN113723934ASolve the technical defect that the construction progress of the tunnel under construction cannot be adjusted in real time based on information such as the settlement displacement of the existing railwayGeometric CADDesign optimisation/simulationModeling softwareArchitectural engineering
The invention relates to the technical field of tunnel engineering construction, in particular to a construction method for underneath passing of a three-hole highway tunnel through an existing railway. Through the above scheme, the geological data of the three highway tunnels crossing the existing railway area and the geographic coordinate information of the existing railway are collected, the sensors are arranged on the existing railway, the collected information is imported into the modeling software to establish the geological model, and then the information collected by the sensors is transmitted to the model in real time. And the next circulating footage is adjusted in real time according to the settlement amount, monitored by the sensor, of each circulating footage, so that the technical defect that in the prior art, the construction progress of the tunnel under construction cannot be adjusted in real time according to information such as settlement displacement of an existing railway during tunnel excavation is overcome.
Owner:赵红刚
Personnel positioning method and positioning system applied to tunnel under construction
The invention provides a personnel positioning method and positioning system applied to a tunnel under construction. The method comprises the following steps: pre-storing installation position information, installation height information and fixed spacing information of a first base station and a second base station, wherein the tunnel personnel wear positioning tags; respectively arranging the first base station and the second base station on a second lining trolley of a tunnel under construction for detecting relative distances between the base stations and tunnel personnel respectively; and obtaining the relative distance detected by the first base station and the second base station, and calculating the position information of the tunnel personnel in combination with the pre-stored parameters. According to the method, real and accurate positioning and implementation of tunnel safety construction deployment in a real sense are realized, the most objective real rescue data are provided for rescue work after disasters, and the method plays an important role in tunnel safety construction.
Owner:CHINA TRANSPORTATION HEAD NEW TECH CO LTD
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com