39 results about "Survey line" patented technology

The application discloses a marine seismic survey line leveling method, a processing system and a storage medium, and comprises the following steps: acquiring a seismic operation survey line; extracting a seabed first arrival wave time value according to the seismic operation survey line; grouping the seismic operation survey line to obtain a main survey line group and a liaison survey line group; obtaining an intersection difference according to the seabed first arrival wave time value, the main survey line group and the liaison survey line group; calculating a difference adjustment value of the seismic operation survey line according to the intersection difference; and completing seismic survey line leveling according to the difference adjustment value. The application can quickly level the seismic survey line, reduce the closure error of the seismic survey line and improve the processing efficiency of the closure error of the seismic survey line by grouping the seismic operation survey line first, then calculating the intersection difference (i.e. the difference value of the seabed first arrival wave time value) of two groups of seismic operation survey lines in different directions, and finally calculating the corresponding difference adjustment value and adjusting all the seismic operation survey lines.

This invention relates to the field of bedrock interface detection technology for dams, and particularly to an electrical resistivity tomography (OTM) method for detecting the depth of the bedrock interface in dams. The method involves fixing the north pole (N) at infinity outside the survey area; fixing the bottom pole (B) at a first predetermined position on the initial survey line; moving the top pole (A) and bottom pole (M) at measurement points on each survey line according to a preset sequence to perform a first round of data acquisition in a first mode, obtaining the first potential difference and first current at each measurement point; fixing the bottom pole (B) at a second predetermined position on the final survey line; moving the top pole (A) and bottom pole (M) at measurement points on each survey line according to a preset sequence to perform a second round of data acquisition in the first mode, obtaining the second potential difference and second current at each measurement point; fusing the acquired data from each round to generate a combined dataset; inverting the combined dataset to reconstruct a three-dimensional model of the bedrock interface beneath the dam, thereby determining the bedrock interface depth. This invention is beneficial for improving detection resolution and accurately detecting the depth of the bedrock interface in dams.

The application provides a ground penetrating radar image stratum horizon correction method, a computer device and a storage medium, and the method comprises the following steps: adopting a ground penetrating radar to perform circumferential detection on a tunnel to-be-detected region to obtain radar atlas data; using a tunnel scanner to scan and position a tunnel section survey line to obtain tunnel three-dimensional point cloud data; constructing a circumferential curved surface model matched with a ground penetrating radar detection path, extracting the center coordinates, the circumferential radius and the detection angle of each detection position of the ground penetrating radar; obtaining the direct wave time of a single-channel radar wave and the stratum interface reflection wave time in the radar atlas data, and calculating the stratum interface burial depth of each detection position; and based on the center coordinates, the circumferential radius and the detection angle corresponding to each detection position, performing geometric correction on the stratum interface burial depth to obtain the actual interface depth of each detection position relative to the tunnel reference surface. By using the application, the stratum horizon deformation during circumferential detection can be eliminated, and the burial depth and strike of the stratum are more intuitive.

The application discloses a kind of seismic data imaging method, device, equipment, medium and product, the method includes: for each main survey line included in the seismic data volume to be migrated, according to the information of work area and all shot-receiver information contained by main survey line, the shot-receiver coverage range corresponding to main survey line is determined and relationship reference table is established;Iterate the cyclic imaging target in imaging task, determine the input seismic line information according to its target main survey line number, migration parameter and relationship reference table;Iterate all input seismic line numbers in input seismic line number range, determine the imaging sub-result of input seismic line number according to travel time table file, input shot-receiver coverage range set and preset Kirchhoff prestack depth migration algorithm;Until the preset end condition is met, the final imaging result is determined.Travel time data is segmented by main survey line number, and travel time data is read into memory in line by line cycle, which greatly reduces the memory occupation of travel time, saves memory overhead.

This application discloses a deep learning-based method for identifying defects in channel concrete lining, comprising: acquiring ground-penetrating radar (GPR) data of a target channel section; the GPR data including B-scan radar images acquired by multiple antenna channels along the same survey line; extracting candidate defect regions from the B-scan radar images, comparing the candidate defect regions with a pre-established defect morphology feature database to obtain defect type determination results for the candidate defect regions; inputting the candidate defect regions into a defect identification model to obtain defect judgment results for the B-scan radar images acquired by each antenna channel; and performing multi-channel fusion of the defect judgment results of each antenna channel at the same spatial location to obtain the defect identification result corresponding to the target channel section. The method of this application improves the accuracy and reliability of channel lining concrete defect identification by performing multi-channel identification and determination of the same spatial location of the channel concrete lining through a defect identification model.

This invention discloses an adaptive particle swarm optimization PID method for ship heading control, belonging to the field of ship heading control technology. It solves the problems of existing technologies, such as the difficulty in calculating the coverage width of survey lines in complex seabed topography, the large variation in width of the same straight line, and measurement difficulties. This invention employs a positional PID method for survey line layout. By determining the appropriate step size, the curve is transformed into a set of straight lines, and the ship's survey line is corrected with a fixed step size, ensuring that the final survey line is laid out as close as possible to the isobath. Secondly, an adaptive particle swarm optimization algorithm is introduced to obtain optimal PID parameters, optimizing the positional PID, thereby achieving more stable PID control and obtaining more accurate ship survey lines. Compared with traditional wiring schemes and manually adjusted PID parameters, this invention effectively solves the problem of high overlap between adjacent strips, significantly improving the feasibility and flexibility of the solution, and providing a new and effective solution for marine vessel survey line layout.

This invention provides an aeromagnetic leveling method and system based on virtual control lines, relating to the field of aeromagnetic data processing technology. The method includes: acquiring raw aeromagnetic data of a survey area where control line adjustments have been completed; calculating the leveling value at the intersection of each survey line and control lines based on the raw aeromagnetic data, where the leveling value is the difference between the original magnetic field value and the leveled magnetic field value; determining, based on the survey lines that have completed control line adjustments, the closest co-directional survey line to the survey line to be leveled, using the survey line number as a reference survey line; extracting the leveling values ​​at the intersection of the reference survey line and each control line; and extending the control line outwards according to the actual spatial position of the control line on the reference survey line, so that the control line intersects with the survey line to be leveled to form a virtual intersection. This invention achieves accurate leveling of survey lines with missing control lines.

The application discloses a seismic exploration data collection method for a power system, comprising the following steps: acquiring data information of a target power system; determining a survey line direction and arranging a seismic source; arranging two same geophones in a set range on both sides of the seismic source along the survey line direction; connecting a geophone signal output end to a seismic instrument input end; performing a seismic exploration operation; and completing collection of seismic exploration data of a target power system. The application further discloses a system for implementing the seismic exploration data collection method for the power system. The application not only realizes collection of seismic exploration data for the power system, but also has higher reliability and better accuracy in the data collection process.

The application discloses a kind of optimal survey line planning method and device for seismic exploration based on ocean current prediction, method includes: obtaining the candidate survey line set in exploration area, obtain the ocean current prediction data in preset planning time window;Establish towed bird angle prediction model, according to ocean current prediction data, determine the expected feather angle and risk index of each candidate survey line in candidate survey line set at each time by using towed bird angle prediction model;According to the expected feather angle and risk index of each candidate survey line in candidate survey line set, screening is carried out according to the first preset constraint condition, determine the feasible time window set of each candidate survey line;According to the feasible time window set of each candidate survey line, the optimization result containing the execution order and time window of each candidate survey line is determined by using the second preset constraint condition and multi-objective cost function, and the survey line pushing instruction set of ship is generated according to the optimization result. The expected feather angle and risk index are actively predicted before operation using ocean current prediction data, and the operation safety is improved.

This invention discloses a three-dimensional electrical resistivity tomography (EDT) method for detecting cavities based on T-shaped electrode survey lines. A two-dimensional T-shaped electrode survey line advance detection observation system is constructed by deploying two mutually perpendicular survey lines (line 1 and line 2) behind the tunnel face. Electrode electrical resistivity data are collected for both vertical and parallel tunnels, and resistivity depth imaging maps are then established for each. The vertical imaging map determines whether the cavity is located to the left or right of the tunnel face, while the parallel imaging map determines whether it is located in front of or behind the tunnel face. This achieves preliminary two-dimensional planar positioning of the cavity. The detection space around the tunnel face is divided into target units, and through resistivity forward modeling and correlation calculation, correlation imaging results of each target unit are obtained. Ranges exceeding a threshold are delineated in the map, and combined with the preliminary positioning, the three-dimensional spatial location of the cavity is accurately determined, ensuring safe tunnel excavation.

Even when the survey area spans long distances, the system accurately aligns underground data acquired along multiple survey lines. [Solution] The underground data management device 10 acquires road surface images and underground data along multiple survey lines set so that the shooting range of the road surface images partially overlaps, matching the acquisition positions. It selects a reference survey line from the multiple survey lines, divides the road surface image into multiple blocks along the survey line, and associates the road surface image blocks of the reference survey line with the road surface image blocks of the other survey lines by matching the feature points in the images. This identifies the relative position of the other survey lines with respect to the reference survey line for each block, and manages the underground data for each block based on its relative position with respect to the reference survey line.

This invention discloses a multi-acquisition module three-dimensional array ground-penetrating radar, comprising several dual-channel acquisition modules, each corresponding to a dual-transmit, dual-receive antenna unit. The dual-channel acquisition modules are connected in series via a clock CLK interface and a network NET interface. Each preceding dual-channel acquisition module provides a common reference clock to the following dual-channel acquisition module. The control system controls the timing of each dual-channel acquisition module, ensuring it operates in a one-transmit, two-receive mode. The survey data acquired by each dual-channel acquisition module is transmitted to the control system in real time via the network. The automatic calibration method disclosed in this invention ensures consistent direct wave signal positions across all survey lines of the three-dimensional array ground-penetrating radar under multi-acquisition module configuration, avoiding mosaic effects such as banded or patchy interference in the three-dimensional imaging of the target.

The present application belongs to the field of electrical exploration, and relates to an electrical data mapping system, method and software based on cross section and plane linkage. The method comprises the following steps: receiving original measurement data, preliminary inversion data and target layer bottom elevation graphic data; extracting and generating the elevation file of the ground surface and the target layer bottom; converting the apparent resistivity-burial depth data into elevation domain apparent resistivity data based on an elevation reference surface through elevation domain conversion; then automatically generating the apparent resistivity cross section graph of each survey line in batches; extracting the in-seam apparent resistivity data corresponding to the target layer bottom elevation and generating the in-seam apparent resistivity plan in batches; linking the cross section graph and the plan; generating the single-point decay curve graph and the multi-channel graph; and finally automatically compiling all the graphs into a result atlas. The present application realizes the full-process automation from the data pre-processing to the generation of the result atlas, greatly improves the work efficiency and the graph accuracy, and solves the problems of complicated manual operation and easy errors.

This invention belongs to the field of multi-unmanned surface vessel (USV) path planning technology. It uses rectangular decomposition results as basic units to construct a topological intensity map representing spatial adjacency density, and utilizes Laplace eigenmaps to capture the topological similarity between rectangles. Subsequently, a weight discretization allocation strategy is proposed, which transforms the weighted graph partitioning problem into a linear sum allocation problem by splitting rectangles with heterogeneous areas into isomorphic virtual nodes. This ultimately yields a region allocation scheme that balances strict load balancing and spatial compactness. Finally, through connectivity repair and boundary fine-tuning, the final multi-USV coverage path is output. By maximizing the path compactness within sub-regions, this invention ensures that adjacent survey lines belong to the same operational unit, providing a high-quality trajectory foundation for sonar data fusion using overlapping areas and compensating for edge imaging defects. This helps improve the coverage detection path quality of multi-USV systems in underwater target search missions.

This invention relates to the field of data calibration technology and discloses a geophysical survey data feedback calibration method. An initial model is established through geological data integration, and low-resolution areas are identified using sensitivity matrix calculations. During the acquisition phase, a multi-azimuth survey line array is deployed, and the source position is dynamically adjusted by monitoring the offset distribution heatmap in real time. When a spectral gap is detected, low-frequency source supplementary excitation is automatically triggered. For areas with missing acquired data, a low-rank tensor completion algorithm is used to recover the complete data volume. During the inversion process, long-offset data is prioritized to construct a macroscopic velocity model, and then short-offset reflected wave data is gradually introduced to refine the local structure. The model uncertainty analysis module automatically identifies low-confidence areas, generates supplementary acquisition coordinates, and drives field equipment to implement directional encryption. The newly added data is rapidly processed and reinjected into the inversion process, forming a continuously optimized closed-loop system.

The application discloses a kind of roadbed ground penetrating radar image contrast monitoring methods, the method comprises the following steps: using ground penetrating radar to carry out road initial measurement;Synchronous recording of ground penetrating radar survey line position, establish block image filing index;Periodic rapid measurement is carried out using the same ground penetrating radar;According to survey line position retrieval corresponding filing image;Same position radar image is self-positioning calibration;Difference rate between periodic measurement image and initial measurement image is calculated;Depthwise offset between periodic measurement image and initial measurement image is calculated;Roadbed settlement risk assessment is carried out using difference rate and depthwise offset.The application realizes the accurate matching of road ground penetrating radar periodic measurement image and initial measurement image by positioning measurement initial calibration and radar image self-positioning calibration, and proposes image difference rate, depthwise offset, roadbed settlement risk value and other evaluation quantities, to provide an efficient method for large-scale road safety detection.

This invention belongs to the field of 3D modeling technology, specifically relating to a method for structural identification and visualization modeling of underground karst cave systems. The method includes the following steps: Step 1: Moving a data acquisition platform along a preset survey line within the underground karst cave, simultaneously acquiring laser scanning point cloud data and generating a point cloud coordinate system; Step 2: Generating cave structure evidence using an extended polarization reflection path weaving algorithm based on orthogonal dipole full polarization physical separation; Step 3: Generating the cave's implicit surface through variational implicit surface solving: establishing a voxel mesh and constructing an implicit distance field within a unified coordinate system; Step 4: Outputting 3D visualization modeling: performing iso-extraction on the cave's implicit surface to generate a 3D mesh model of the cave, and outputting a 3D geological profile and visualization model. This invention achieves stable identification and highly consistent modeling of complex spatial structures in underground karst caves, significantly improving the accuracy, repeatability, and engineering application value of cave structure interpretation.

The application provides a kind of multi-underwater robot seabed area cooperative search method, it is related to seabed target autonomous search technical field.The method comprises: according to communication distance constraint, task area is divided into multiple sub-regions and sets electronic fence;In each sub-region, parallel survey line is generated, and survey line task is allocated to subordinate AUV according to the principle of modulo, to realize equal load division of labor;Each subordinate AUV executes task and transmits target information to master control platform;Master control platform assesses the progress state of each sub-region based on target information, dynamically schedules subordinate AUV cooperative work;When target confidence reaches the standard, insert review evidence task;For communication anomaly, border crossing or low energy, etc.Abnormal, emergency strategy is executed and unified re-planning after anomaly recovery.The application realizes the balance of complete coverage, continuous operation and target accurate search in large range of sea area through the cooperative work framework under the communication constraint, improves the operation efficiency and reliability.

The utility model discloses an engineering surveying and mapping device, specifically related to engineering surveying and mapping technical field, including: the pay -off box, the pay -off box inside bottom fixed ink box is equipped with, the ink box inside rotation is connected with the rotating roller, and the rotating roller outer end fixedly installed is equipped with the ink -soaked cotton cover, the winding bar is rotated and is connected in the pay -off box inside, and the winding bar outer end is coiled with the surveying line, the connecting block, the pay -off box one side fixedly installed is equipped with laser emitter, the connecting block bottom inboard fixedly installed is equipped with the laser receiver corresponding with laser emitter, the pay -off box one side fixedly installed is equipped with the controller, and the controller top fixedly installed is equipped with the pilot lamp. The utility model discloses through the cooperation of laser emitter, laser receiver and pilot lamp, has realized the real -time straightness monitoring of pay -off process, has improved the accuracy and precision of pay -off greatly, has avoided the deviation that the artificial judgment has brought.

The present application relates to the field of petroleum exploration geophysical data processing and interpretation evaluation, in particular to a two-dimensional seismic data seesaw type closure difference correction method, device and equipment. Select a short time window at each intersection of the to-be-corrected survey line and the reference survey line in the two-dimensional seismic data; for each intersection, calculate the time difference at the intersection by cross-correlation in the short time window; according to the intersection position index of each intersection on the to-be-corrected survey line and the corresponding time difference, a set of discrete time drift control points is obtained; according to the set of discrete time drift control points, function fitting is performed to obtain the time drift vector of each trace of the to-be-corrected survey line; according to the time drift vector of each trace, time axis resampling correction is performed on each trace of the to-be-corrected survey line to obtain the corrected two-dimensional seismic data. The seesaw type time non-closure phenomenon caused by splicing of different batches of data is eliminated, and two-dimensional seismic data with consistent time reference is provided for subsequent structure interpretation and reservoir evaluation.

This invention discloses a method and equipment for synchronous acquisition of multi-source data on the surface of rockfill dams, belonging to the field of intelligent construction and quality control of water conservancy projects. The acquisition method uses a GNSS positioning system to obtain the velocity vector and real-time position coordinates of the acquisition equipment and converts these coordinates into rockfill dam engineering coordinates. Based on the velocity vector, the operating status of the acquisition equipment is determined. Image data of the rockfill material surface and data of the rockfill dam compacted layer are acquired, and dynamic survey line units are divided. Then, the image data of the rockfill material surface and the data of the rockfill dam compacted layer are processed for data time synchronization to generate a structured multimodal dataset. This invention is applicable to the quality inspection of rockfill dam construction, effectively overcoming the problem of heterogeneous data registration in rockfill dam quality inspection, and generating a structured multimodal dataset containing surface and internal quality features, providing reliable data support for the digital control and intelligent evaluation of rockfill dam construction quality.

This invention discloses a distributed aerial target navigation, tracking, and positioning method, belonging to the field of distributed aerial target navigation, tracking, and positioning technology, and is used to solve the problem of distributed positioning instability. This invention constructs an aerial target navigation, tracking, and positioning method that combines distributed wireless observation, reconnection chain determination, positioning subdomain screening, and fragment reconstruction correction. By converting the arrival direction, time delay, and frequency shift information acquired by multiple nodes into direction survey lines, distance constraints, and velocity constraints, an observation primitive sequence is generated, and a reconnection chain for a single aerial target is formed accordingly, achieving continuous target tracking in complex low-altitude scenarios. Continuous tracks are then generated through candidate intersection area screening and continuous positioning point verification. Combined with preset route constraints, path holding, yaw correction, and reconnection guidance states are output. Simultaneously, backup nodes are used to reconstruct fragmented sections and update node correction parameters, thereby improving the continuity, stability, and reliability of navigation, tracking, and positioning results.

The utility model provides a kind of civil engineering surveying and mapping device, including outer protective shell, the top of outer protective shell is fixedly installed with hanging ring, outer protective shell is installed with pay-off winding device, and the outer wall center of outer protective shell is fixedly installed with rotating positioning assembly, and one end of pay-off winding device is installed with the rotating handle of movable penetration rotating positioning assembly, and outer protective shell is integrally connected with the measuring line cleaning assembly that pay-off winding device intercommunication, measuring line cleaning assembly is equipped with threading hole, and the bottom of outer protective shell is integrally connected with lower connecting block, and the bottom of lower connecting block is installed with adjustable fixing assembly.The utility model has the beneficial effects as follows, the utility model simple structure, convenient to use, it is convenient to carry out height adjustment to the surveying equipment fixed on ground, while the soil attached on measuring line can be cleaned in the process of take-up, prevent the problem of soil attachment and weight increase after long time use.

The application provides a kind of full-automatic leveling method and device for airborne electromagnetic data, first, mirror image period extension is carried out on each survey line data to avoid endpoint effect of data, and Grubbs criterion is used to remove abnormal data;Secondly, based on the extended data of survey area, the data of each survey line in the survey area is connected head to tail, and the variational mode decomposition is carried out on the data of the whole survey area;Finally, the first variational mode component after mean removal is taken as the leveling error, and the leveling error is removed from the original data as the leveling result.This method considers the characteristics of the leveling error along the survey line low-frequency variation, not only does not need to cut the line data, but also does not need to set parameters in the leveling process, and the whole leveling process can be fully automatic.

This invention discloses a siltation early warning method based on the fusion of towed sonar and multi-source hydrological parameters, belonging to the field of underwater topographic monitoring and engineering safety early warning technology. The method first plans the survey lines for the target area and simultaneously collects multibeam sonar bathymetry data, CTD multi-parameter data, platform attitude data, tow cable status data, positioning and navigation data, and time synchronization information during towed platform operation. Then, it performs time alignment, outlier removal, missing value compensation, and noise suppression on the multi-source data. A sound velocity profile is constructed based on the CTD multi-parameter data, and the sound velocity of the multibeam sonar bathymetry data is corrected. Geometric compensation is also performed by combining platform attitude data, tow cable status data, and positioning and navigation data. Finally, the corrected bathymetry data is... The results are mapped to a preset coordinate system to construct an underwater cross-section model, a grid elevation model, or a bed sediment point cloud model for the current time period. Historical baseline models are retrieved for coordinate unification, overlapping area identification, and adaptive registration. Based on this, elevation difference analysis, slope change analysis, regional thickness statistics, and calculations of sediment thickness, changed area, and sediment volume are performed. Furthermore, short-term trend predictions are made by combining historical observations from multiple time periods with environmental driving factors such as flow velocity, tide level, temperature, salinity, turbidity, and sediment content. Finally, a warning level is generated based on a risk threshold, and warning information is output. This invention improves the comparability of multi-time period towed sonar measurement results and the accuracy of sediment identification, enabling continuous monitoring, quantitative analysis, and proactive warning of bed sedimentation status in target areas. It is applicable to port channels, inland waterways, estuaries, reservoir areas, and near-shore engineering areas.

The application discloses a kind of deep foundation pit construction process peripheral building inclination measurement method, it is related to engineering surveying technical field, including: in the corner of target building adjacent two facades respectively layout near angle survey line and far angle survey line, and along the height direction setting lower point, midpoint and upper point, acquisition each survey point coordinate and elevation, calculate the normal displacement amount of facade;Based on upper segment slope and lower segment slope extraction broken line sensitive quantity, generate near angle broken line leading coefficient, construct apparent displacement decomposition model, and adopt particle swarm algorithm to solve broken line pivot height position, local broken line rotation intensity and overall real inclination component, to obtain building overall real inclination, building overall real inclination direction, false inclination pollution coefficient and real correction ratio further.The application can improve the accuracy and reliability of peripheral building inclination measurement in deep foundation pit construction process.

A magnetic positioning method for underground magnetic pipelines based on adaptive Euler inversion and geometric constraints includes: initially determining the principal axis direction of the underground magnetic pipeline and, while maintaining a constant sampling height, collecting three-component magnetic field data and position coordinates of multiple sampling points along the main survey line; performing adaptive SI selection and cross-sectional joint inversion on the measurement window of the main survey line to obtain the optimal SI value; and inverting the pipeline burial depth based on the optimal SI value to generate the pipeline trajectory. This invention, without relying on any idealized model assumptions, can quantitatively evaluate the degree of aggregation of inversion solutions under different SI candidate values, adaptively selecting the optimal SI value for the current measurement window, thereby effectively overcoming the model mismatch problem caused by the finite length and complex magnetization characteristics of the pipeline. Under the constraint of a known pipeline axis, this invention simplifies the three-dimensional inversion problem into a two-dimensional cross-sectional positioning problem, achieving high-precision, ambiguity-free solution for pipeline location with only a single main survey line.

The application provides an ice cover thickness detection method and system based on borehole noise imaging, and relates to the technical field of ice cover geological detection. The method comprises the following steps: arranging a two-dimensional linear survey line composed of multiple geophones around a borehole in an ice cover, collecting continuous noise data composed of mechanical noise generated by borehole operation and auxiliary equipment and environmental background noise; pre-processing the continuous noise data, which comprises the following steps: sequentially performing the following processing on the record of each geophone: removing mean value, removing linear trend, removing strong amplitude events in the time domain, and removing strong amplitude components in the frequency domain, so as to eliminate instrument drift and local strong noise interference, and obtaining pre-processed noise data; selecting one geophone in the two-dimensional linear survey line as a virtual source position, performing mutual coherence calculation on the noise data, and recovering a pseudo-shot gather reflection response corresponding to the virtual source. The application realizes high-resolution imaging of the ice-rock interface.

This invention proposes an intelligent detection and positioning method for acoustic wave decoupling on cement pavement. The method includes the following steps: S1: A microphone array is configured on the detection vehicle, and a controllable impact excitation device is installed at the center of the array. A communication connection is established between each microphone and the data acquisition unit that synchronizes with the positioning unit; S2: The detection vehicle travels along a preset survey line. When it reaches the preset detection point, the controllable impact excitation device impacts the cement pavement to excite acoustic wave signals. The air-coupled microphones simultaneously collect acoustic wave signals containing pavement response acoustic waves and environmental noise, and the data acquisition unit records the original acoustic wave data with precise spatiotemporal tags corresponding to each microphone.

The utility model relates to the technical field of civil engineering discloses a kind of buried survey line protection and use device, including concrete, the inside of concrete is equipped with resilience mechanism, the inside of concrete is fixedly connected with cubic cylinder, the front end of cubic cylinder is equipped with sealing mechanism, the rear end of cubic cylinder is fixedly connected with two hinges;The resilience mechanism includes steel pipe, the outer wall of steel pipe is fixedly connected in the inside of concrete, the top inner wall of steel pipe is fixedly connected with formwork, the inner wall of formwork is slidably connected with survey line, the top end of survey line is fixedly connected with survey line plug, the outer wall of steel pipe is slidably connected with support leg.In the utility model, survey line is quickly restored to original correct position and form by the resilience force, avoid survey line long-term in stretching, distortion or bending state, reduce the fracture caused by continuous stress, signal transmission unstable and other problems.