A pipeline integrated management and monitoring method and visualization system

Abstract

The present application relates to the technical field of intelligent pipelines, and in particular to a pipeline integrated management and monitoring method and visualization system, which includes: collecting soil at the monitoring position and performing mechanism testing to generate soil stress assessment results; collecting target pipe selection and selecting the corresponding test pipe, performing displacement deformation testing on the test pipe and generating strain assessment results; performing damage determination testing according to several strain monitoring positions and strain assessment results on the test pipe to generate damage location assessment results; training and generating a pipeline management and monitoring model based on soil stress assessment results, strain assessment results and damage location assessment results; collecting real-time pipeline parameters, and inputting the real-time pipeline parameters into the pipeline management and monitoring model to output pipeline status information; performing graphical processing for visualization, and the displayed content includes real-time pipeline parameters, pipeline status information, and early warning information. The present application has the effect of improving the real-time monitoring and analysis of pipeline status information.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent pipelines, and in particular to a pipeline integrated management and monitoring method and a visualization system. Background Art

[0002] At present, the construction of urban pipeline systems and smart platforms is being gradually carried out, and information-based and intelligent platform management models are being implemented for both old and newly built pipelines.

[0003] However, the current pipeline system generally has low perception capabilities and integration. There is a lack of supporting sensing and operation and maintenance methods for pipelines. Instead, it only integrates and manages pipeline routes. It cannot obtain the position changes and deformation of the pipelines themselves in a timely manner. Problems with the pipelines are intelligently handled through carpet-style detection and passive repairs, and the management and labor costs are extremely high. As a result, the pipeline network information resources lack coordinated interconnection and reasonable visual and clear monitoring, becoming an information island. Summary of the invention

[0004] In order to improve the real-time monitoring and analysis of pipeline status information, the present application provides a pipeline integrated management and monitoring method and a visualization system.

[0005] In a first aspect, the present application provides a pipeline integrated management and monitoring method, which adopts the following technical solution:

[0006] A pipeline integrated management and monitoring method comprises the following steps:

[0007] Collect soil at monitoring locations and conduct mechanism tests to generate soil stress assessment results;

[0008] Collecting the target pipe selection and selecting a corresponding test pipe based on the target pipe selection, selecting a number of strain monitoring positions on the test pipe and performing displacement deformation tests, and generating strain evaluation results based on the test results;

[0009] Performing a damage determination test according to a plurality of strain monitoring positions on the test tube and the strain assessment result, and generating a damage location assessment result based on the test result;

[0010] Training and generating a pipeline management monitoring model based on the soil stress assessment result, the strain assessment result and the damage location assessment result;

[0011] Collecting real-time pipeline parameters and inputting the real-time pipeline parameters into the pipeline management and monitoring model to output pipeline status information;

[0012] Graphic processing is performed for visual display, and the displayed content includes real-time pipeline parameters, pipeline status information, and early warning information.

[0013] In some embodiments, collecting soil at a monitoring location and performing a mechanism test to generate a soil stress assessment result includes the following steps:

[0014] Collect samples on site;

[0015] Selecting a test sample of corresponding weight from the field sample based on the test item;

[0016] Conducting a liquid-plastic limit test, a soil particle gradation density test, and a consolidation test based on the test samples, respectively, and generating a test score based on a number of test results;

[0017] A mechanism influence coefficient is generated based on a number of the test scores, and the mechanism influence coefficient is defined as the soil stress evaluation result.

[0018] In some embodiments, collecting the target pipe type and selecting a corresponding test pipe based on the target pipe type, selecting a number of strain monitoring positions on the test pipe and performing a displacement deformation test, and generating a strain assessment result based on the test result include the following steps:

[0019] Based on the outer diameter of the target pipe material, a PVC pipe with the same outer diameter is selected as the test pipe, a theoretical maximum pressure acceptance point is selected as the first point on the cross section of the test pipe, and a line is connected between the first point and the center of the test pipe to obtain a reference line, and points on the cross section of the test pipe that are located on both sides of the reference line and connected to the center and are 90 degrees from the reference line are selected as the second point and the third point respectively;

[0020] Placing an optical fiber sensor and a displacement sensor passing through the first point, the second point and the third point on the test tube respectively;

[0021] Applying pressure in a fixed vertical downward direction and changing the deflection angle of the test tube to simulate different strain environments;

[0022] Acquiring wavelength change data detected by the optical fiber sensor and displacement change data detected by the displacement sensor in different strain environments;

[0023] Based on the wavelength change data and the displacement change data, respectively, the strain data is converted to obtain a first strain result and a second strain result;

[0024] The first strain result and the second strain result are compared and analyzed to generate the strain assessment result.

[0025] In some embodiments, placing an optical fiber sensor and a displacement sensor passing through the first point, the second point, and the third point on the test tube respectively comprises the following steps:

[0026] Obtaining the length x of the test tube;

[0027] Obtaining the resolution y of the optical fiber sensor;

[0028] The number of the displacement sensors is x / y+2, wherein two of the displacement sensors are disposed at two ends of the test tube, and x / y of the displacement sensors are evenly arranged on the test tube.

[0029] In some embodiments, applying pressure in a fixed vertical downward direction and changing the deflection angle of the test tube to simulate different strain environments include the following steps:

[0030] Detecting the positional relationship between each of the strain monitoring positions and the pressure in the vertical direction;

[0031] When the target position of the pressure coincides with the first point, the strain environment is vertical settlement;

[0032] When the target position of the pressure is between the first point and the second point, or between the first point and the third point, the strain environment is vertical settlement+horizontal displacement;

[0033] When the target position of the pressure coincides with the second point or the third point, the strain environment is vertical settlement+horizontal offset;

[0034] When the target position of the pressure is between the second point and the third point, and the first point does not exist in the direction of the pressure, the strain environment is a horizontal offset;

[0035] When the target position of the pressure is between the second point and the third point, and the first point exists in the direction of the pressure, the strain environment is a vertical bulge offset.

[0036] In some of the embodiments, before performing the displacement deformation test, the following steps are also included:

[0037] Performing a pre-test optimization task, selecting a square steel tube as a test tube, and setting the displacement sensor on the test tube;

[0038] Applying pressure on the square steel tube and calculating the absolute displacement according to the detection result of the displacement sensor;

[0039] Comparing the absolute displacement with the preset ideal displacement under different stiffness-pressure conditions to generate adjustment requirements, and generating a test optimization plan based on the adjustment requirements;

[0040] The test parameters of the displacement deformation test are modified based on the test optimization scheme, and the test parameters include pressure magnitude, pressure direction, pressure application position, and pressure application speed.

[0041] In some embodiments, performing a damage determination test according to a plurality of strain monitoring positions on the test tube and the strain assessment result, and generating a damage location assessment result based on the test result, comprises the following steps:

[0042] adding a damaged site on the test tube;

[0043] Generate a plurality of test tasks, and adjust the position of each strain monitoring position in each test task to ensure that the first point remains coincident with the target position of the pressure and the damaged positions are respectively at different positions;

[0044] The pressure is applied in a fixed vertical downward direction;

[0045] Generate strain assessment results of several strain monitoring positions to generate an ideal comparison list for damage location, wherein the ideal comparison list for damage location includes several ideal comparison items, and the ideal comparison items are corresponding conversion coefficients under ideal conditions between the strain data of each strain monitoring position and the distance between the damage position and each strain monitoring position.

[0046] In some embodiments, performing a damage determination test according to a plurality of strain monitoring positions on the test tube and the strain assessment result, and generating a damage location assessment result based on the test result, comprises the following steps:

[0047] adding a damaged site on the test tube;

[0048] Generate multiple test tasks, and adjust the position of each strain monitoring position in each test task to ensure that the damaged position is at different positions under different strain environments;

[0049] Maintaining the application of pressure in a vertical downward direction under different said strain environments;

[0050] Generate strain assessment results of several strain monitoring positions to generate a non-ideal comparison list for damage location, wherein the non-ideal comparison list for damage location includes non-ideal comparison items under several different strain environments, and the non-ideal comparison items are corresponding conversion coefficients between the strain data of each strain monitoring position and the distance between the damage position and each strain monitoring position under different strain environments.

[0051] In some embodiments, collecting real-time pipeline parameters and inputting the real-time pipeline parameters into the pipeline management and monitoring model to output pipeline status information includes the following steps:

[0052] The real-time pipeline parameters include pipeline strain parameters and pipeline environmental parameters;

[0053] Predicting pipeline receiving pressure based on the pipeline environmental parameters combined with the mechanism influence coefficient;

[0054] Predicting the current strain environment of the pipeline according to the pressure received by the pipeline combined with the pipeline strain parameters at each strain monitoring position on the pipeline, and generating a first state based on the current strain environment;

[0055] Inferring whether the current pipeline strain parameter of the pipeline exceeds a preset ideal strain value to generate a second state;

[0056] Comparing the pipeline strain parameter with the damage location assessment result corresponding to the current strain environment to generate a third state;

[0057] The first state, the second state and the third state are integrated into the pipeline state information.

[0058] In a second aspect, the present application provides a pipeline integrated management and monitoring system, which adopts the following technical solution:

[0059] A pipeline integrated management and monitoring system is used to implement the above method.

[0060] The technical solution provided by the embodiments of the present application has the following technical effects:

[0061] By conducting soil mechanism and pipeline equivalent displacement deformation tests and damage determination tests, an assessment model for the pipeline is integrated and established before the pipeline is buried and used. By inputting the data monitored on the pipeline in subsequent use into the model to obtain the output analysis results, and by performing intelligent operation and maintenance and information display on the status of the pipeline environment and the status of the pipeline structure, a perception management platform integrating detection, assessment, analysis and visualization is generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a flow chart of a pipeline integrated management and monitoring method provided in this embodiment.

[0063] Figure 2 It is a schematic diagram of various strain monitoring positions and pressure directions of the test tube in the embodiment of the present application. DETAILED DESCRIPTION

[0064] To more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. However, it should be understood by those of ordinary skill in the art that the present application can be implemented without these details. In some cases, in order to avoid unnecessary descriptions that make various aspects of the present application obscure, well-known methods, processes, systems, components and / or circuits that have been described at a higher level will not be described in detail. For those of ordinary skill in the art, it is obvious that various changes can be made to the embodiments disclosed in the present application, and without departing from the principles and scope of the present application, the general principles defined in the present application can be applied to other embodiments and application scenarios. Therefore, the present application is not limited to the embodiments shown, but conforms to the broadest scope consistent with the scope claimed for protection of the present application.

[0065] It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as there is no conflict between them.

[0066] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0067] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples.

[0068] like Figure 1 As shown, the embodiment of the present application discloses a pipeline integrated management and monitoring method, comprising the following steps:

[0069] S100, collecting soil at the monitoring location and performing mechanism testing to generate soil stress assessment results.

[0070] The soil at the location where the pipeline is to be installed is collected and the soil mechanism test is carried out. The influence of soft soil consolidation settlement on pipeline deformation is taken as the direction to study the stress transfer mechanism of the interaction between pipeline and soil, and the influence of parameters when the pipeline is acted upon by the surrounding soil. Different test treatments are carried out on the collected on-site samples, and the soil stress is evaluated based on the test results. Different soil stresses will have different effects on the pressure of the pipeline, the settlement of the pipeline, etc.

[0071] S200, collecting target pipe selection and selecting a corresponding test pipe based on the target pipe selection, selecting a number of strain monitoring positions on the test pipe and performing a displacement deformation test, and generating a strain evaluation result based on the test result.

[0072] Obtain the type of pipelines that need to be buried on site, and based on the required type, perform equivalent testing on the pipelines of this type before burying them.

[0073] A test tube with the same specifications as the target tube is obtained, and the test tube is pressurized by a reaction frame to perform a compression bending test. The characteristic positions on the test tube are monitored by corresponding parameters that can be detected on the test tube, and strain assessment results are generated based on the monitoring results.

[0074] Displacement deformation testing is used to simulate the possible displacement of pipelines during actual use and to evaluate the accuracy and reliability of different monitoring methods.

[0075] S300, performing a damage determination test according to a plurality of strain monitoring positions on the test tube and strain assessment results, and generating a damage location assessment result based on the test results.

[0076] At the same time, damage is randomly added to the test pipe, and the strain assessment results of the damaged test pipe are monitored according to the above-mentioned pressure application and detection methods. The correlation test is performed between the degree of change of strain data at different positions on the pipeline and the ratio of the change amplitude of strain data of multiple characteristic strain monitoring positions and the specific damage position, so as to obtain the damage location assessment result.

[0077] Based on the damage location assessment results, a specific positioning relationship table for pipeline damage can be established. Through this table, in the subsequent actual use of the pipeline, it is possible to predict whether the pipeline is damaged and the location of the damage when it occurs based on the strain data relationship between several feature points.

[0078] Through the above test, the damage of the pipeline after it is put into use can be predicted and located by establishing a control relationship in advance, wherein the damage of the pipeline includes damage, leakage, etc.

[0079] S400, training and generating a pipeline management monitoring model based on soil stress assessment results, strain assessment results and damage location assessment results.

[0080] By integrating and coordinating the above-mentioned multi-dimensional test results, geophysical exploration technology and various test data are integrated to train a model for managing and monitoring pipeline health.

[0081] S500, collecting real-time pipeline parameters, and inputting the real-time pipeline parameters into a pipeline management monitoring model to output pipeline status information.

[0082] The real-time pipeline parameters are acquired by collecting data from the pipelines in use, including the pipeline parameters themselves and the parameters of the environment in which the pipeline is located. The collected data are input into the integrated model, and the model outputs the pipeline status information, including the pressure the pipeline can withstand, its own posture, damage status, etc.

[0083] S600, performs graphical processing for visual display, and the displayed content includes real-time pipeline parameters, pipeline status information, and early warning information.

[0084] The above-mentioned data are processed by digital twin or graphical interface to convert some data into visual data, and then displayed in parks, enterprises, mobile terminals and other locations.

[0085] At the same time, the parameters monitored by various sensors can also be calculated and analyzed through the engineering construction and maintenance CAE simulation platform to determine the safety level and display it in the form of corresponding language, graphics, color, etc.

[0086] According to the above technical solution, an assessment model for the pipeline is integrated and established before the pipeline is buried and used through the displacement deformation test and damage judgment test on the soil mechanism and pipeline equivalent. The data monitored on the pipeline in subsequent use is input into the model to obtain the output analysis results. The state of the pipeline environment and the state of the pipeline structure are intelligently operated and maintained and information-based displayed to generate a perception management platform integrating detection, evaluation, analysis and visualization.

[0087] In some other embodiments, collecting soil at a monitoring location and performing a mechanism test to generate a soil stress assessment result includes the following steps:

[0088] S110, collect on-site samples.

[0089] Soil samples are collected on site, and corresponding tests are carried out based on supporting equipment to achieve special working conditions such as programmed rainfall, intelligent assisted excavation, and intelligent vehicle loads.

[0090] The supporting equipment includes special soil pressure sensors and supporting data acquisition instruments with a measuring range of 0-10kPa and a resolution of 0.005kPa; piezometers and supporting data acquisition instruments with a measuring range of -100kPa-0-10kPa and a resolution of 0.001kPa, array-type soil deformation sensors and supporting data acquisition instruments with an error accuracy of ±0.02mm.

[0091] S120, selecting a test sample of corresponding weight from the field samples based on the test item.

[0092] S130, performing a liquid-plastic limit test, a soil particle gradation density test, and a consolidation test based on the test sample, and generating a test score based on the test results.

[0093] Various soil stress tests are carried out to obtain liquid and plastic limit data, soil particle gradation density data, and consolidation data, and test scores are generated based on several results.

[0094] The test score is characterized by the test accuracy during the test and the impact of soil stress on the normal state of the pipeline.

[0095] S140, generating a mechanism influence coefficient based on the plurality of test scores, and defining the mechanism influence coefficient as a soil stress assessment result.

[0096] The corresponding mechanism influence coefficient is generated according to the test score. The higher the mechanism influence coefficient is, the more accurate the test result is and the less negative impact of the soil on the pipeline is.

[0097] like Figure 2 As shown, in other embodiments, the target pipe selection is collected and a corresponding test pipe is selected based on the target pipe selection, several strain monitoring positions are selected on the test pipe and a displacement deformation test is performed, and a strain evaluation result is generated based on the test result, including the following steps:

[0098] S210, based on the outer diameter of the target pipe selection, a PVC pipe with the same outer diameter is selected as a test pipe, a theoretical maximum pressure acceptance point is selected as the first point on the cross section of the test pipe, and a line is connected between the first point and the center of the test pipe to obtain a reference line, and points on the cross section of the test pipe that are connected to the center on both sides of the reference line and are 90 degrees to the reference line are selected as the second point and the third point respectively.

[0099] First, measure the outer diameter of the required pipe and select a PVC pipe with the same outer diameter as the target pipe as the test pipe.

[0100] Three positions are selected in the test tube for marking to obtain the first point, the second point and the third point respectively. The first point corresponds to a point on the cross section of the test tube that bears the maximum pressure under theoretically good use conditions, and in the embodiment of the present application, it is the highest point on the cross section in the vertical direction.

[0101] The second point and the third point are located on both sides of the first point respectively, and the angle between the lines connecting the second point and the third point and the center point of the test tube and the first point is 90 degrees.

[0102] S220, placing optical fiber sensors and displacement sensors passing through the first point, the second point, and the third point on the test tube, respectively.

[0103] Optical fiber sensors and displacement sensors are arranged on the test tube, wherein a total of three optical fiber sensors are arranged corresponding to the test tube, and each optical fiber sensor is arranged along the length direction of the inner wall of the test tube and passes through all the first points, the second points and the third points respectively.

[0104] Each optical fiber sensor corresponds to a plurality of displacement sensors, and the displacement sensors are all arranged below the optical fiber sensor.

[0105] Fiber optic sensors can be used to detect the strain of pipelines. When strain occurs, the central wavelength of its reflection spectrum will change accordingly. This wavelength change is measured using a spectrum analyzer, and the wavelength change is converted into a strain value based on the linear relationship obtained by calibration.

[0106] The displacement sensor is used to detect the deformation displacement of the test tube when it is subjected to pressure. When the structure is subjected to strain, its displacement will change. The displacement sensor is used to measure this displacement change and record it.

[0107] S230, applying pressure in a fixed vertical downward direction, and changing the deflection angle of the test tube to simulate different strain environments.

[0108] A reaction frame is used to apply pressure to the test tube, and the direction of pressure is fixed vertically downward. Different strain environments, such as vertical pressure and horizontal displacement, are simulated through the offset angle of the test tube.

[0109] S240, acquiring wavelength change data detected by the optical fiber sensor and displacement change data detected by the displacement sensor in different strain environments.

[0110] The displacement deformation test is comprehensively monitored and analyzed by using the changes in the values ​​collected by the optical fiber sensor and the displacement sensor when the test tube is deformed under pressure and the changes in the values ​​of the two different sensors.

[0111] S250, transforming the strain data based on the wavelength change data and the displacement change data to obtain a first strain result and a second strain result.

[0112] S260: Compare and analyze the first strain result and the second strain result to generate a strain assessment result.

[0113] The detection data of the two sensors are recorded respectively and defined as the first strain result and the second strain result respectively. The two strain results are compared to determine the relationship between the strain force exerted on the test pipe and the deformation displacement of the pipe body when the test pipe is subjected to simulated soil compression and displacement in the soil, and to confirm and calibrate the consistency and correlation between the two values.

[0114] In some other embodiments, placing an optical fiber sensor and a displacement sensor passing through a first point, a second point, and a third point on the test tube respectively comprises the following steps:

[0115] S221, obtaining the length x of the test tube.

[0116] S222, obtaining the resolution y of the optical fiber sensor.

[0117] S223, the number of displacement sensors is x / y+2, wherein 2 displacement sensors are disposed at both ends of the test tube, and the x / y displacement sensors are evenly arranged on the test tube.

[0118] In order to improve the calculation precision and accuracy, the fiber optic sensor and displacement sensor are set as follows: first, the length of the test tube and the resolution of the fiber optic sensor are obtained. Three fiber optic sensors are set, and their effective installation detection range covers the entire length of the test tube. Based on the detection resolution of the fiber optic sensor, one fiber optic sensor is divided into x / y detection blocks. Each detection block corresponds to a displacement sensor. At the same time, one displacement sensor is arranged at both ends of the support where the test tube is placed to monitor the displacement at the support.

[0119] In other embodiments, the pressure is applied in a fixed vertical downward direction, and the deflection angle of the test tube is changed to simulate different strain environments, including the following steps:

[0120] S231, detecting the positional relationship between each strain monitoring position and the pressure in the vertical direction.

[0121] Since the direction of the applied pressure remains unchanged and the positions of the three strain monitoring points on the test tube are determined, the strain environment that the pipeline may actually encounter can be simulated by deflecting the test tube.

[0122] S232, when the target position of the pressure coincides with the first point, the strain environment is vertical settlement.

[0123] First, when the contact point (target position) with the test tube in the direction of pressure coincides with the first point, it is considered that the test tube has no horizontal deflection and is only subjected to pressure from the soil vertically downward. At this time, the corresponding strain environment is vertical settlement.

[0124] S233, when the target position of the pressure is between the first point and the second point, or between the first point and the third point, the strain environment is vertical settlement + horizontal displacement.

[0125] When the target position of the pressure is between the first point and the second point, or between the first point and the third point, the position of the first point is taken as the ideal position where the soil pressure is maximum. After decomposing the current vertical downward pressure, it is considered that the test tube is subjected to the vertical soil pressure and the horizontal displacement force respectively, so its corresponding strain environment is vertical settlement plus horizontal displacement.

[0126] S234, when the target position of the pressure coincides with the second or third point, the strain environment is vertical settlement + horizontal offset.

[0127] When the target position of the pressure coincides with the second or third point, the pipeline in the actual scenario is considered to be subjected to a large horizontal offset force. At the same time, the pipeline is also subjected to the pressure given by the soil by default. Therefore, it is considered that the strain environment corresponding to the test pipe is vertical settlement plus horizontal offset.

[0128] S235, when the target position of the pressure is between the second point and the third point, and the first point does not exist in the direction of the pressure, the strain environment is a horizontal offset.

[0129] When the pressure position is between the second point and the third point, and the extension line of the pressure direction does not pass through the first point, it is considered that the actual pipeline is subjected to an offset force from obliquely downward to obliquely upward. Therefore, it is determined to be subjected to a horizontal offset force. The pressure of soil settlement it is subjected to will offset the vertical component of the pressure on the test pipe. Therefore, the strain environment is considered to be horizontal offset.

[0130] S236, when the target position of the pressure is between the second point and the third point, and the first point exists in the direction of the pressure, the strain environment is a vertical uplift offset.

[0131] When the target position of the pressure is between the second point and the third point, and the extension line of the pressure passes through the first point, it is considered that the force applied to the pipeline corresponding to the test pipe in the actual scenario is a vertical upward force, and the strain environment is considered to be a vertical uplift offset, and the force applied is the force of soil uplift.

[0132] In some other embodiments, before performing the displacement deformation test, the following steps are also included:

[0133] S150, performs the pre-test optimization task, selects a square steel tube as the test tube, and sets a displacement sensor on the test tube.

[0134] S151, applying pressure to the square steel pipe and calculating the absolute displacement according to the detection result of the displacement sensor.

[0135] S152, comparing the absolute displacement with the preset ideal displacement under different stiffness-pressure conditions to generate adjustment requirements, and generating a test optimization plan based on the adjustment requirements.

[0136] S153, based on the test optimization scheme, modify the test parameters of the displacement deformation test, the test parameters including pressure magnitude, pressure direction, pressure application position, and pressure application speed.

[0137] Before using flexible PVC pipes for testing, first use a square steel pipe with greater rigidity to perform absolute displacement deformation measurement. This can ensure the stability of the test system and reduce the impact of environmental factors on the test results.

[0138] Select a square steel pipe with greater rigidity, determine the test position, install the displacement sensor, set the reference point, and calibrate the sensor to ensure its reading is accurate.

[0139] Apply load: Use the control device to apply a predetermined load to the steel pipe to simulate the working conditions that may occur in actual use, and record the data of the displacement sensor and fiber optic sensor at the same time.

[0140] By collecting the numerical changes of the displacement sensor during the test and correlating them with the applied pressure, the absolute displacement is calculated. The absolute displacement refers to the actual displacement of the structure or component relative to its original position after being subjected to external forces (such as pressure, tension, bending moment, etc.). The absolute displacement is compared with the preset ideal displacement under different stiffness-pressure conditions. When the actual displacement and the ideal displacement in the test are the same or the difference is small under the same stiffness and the same pressure, it is considered that the test parameters in the test process do not need to be optimized. When the difference is large, the corresponding adjustment requirements are generated according to the corresponding difference, and the test parameters in the test are adjusted according to the adjustment requirements.

[0141] By adjusting the optimized parameters such as pressure size, pressure direction, pressure application position, and pressure application speed, the parameters can be used in subsequent displacement deformation tests of PVC test pipes.

[0142] In other embodiments, a damage determination test is performed according to a plurality of strain monitoring positions and strain assessment results on a test tube, and a damage location assessment result is generated based on the test results, including the following steps:

[0143] S311, adding a damage site on the test tube.

[0144] First, a predetermined size of damage is created on the test tube by tooling or pressurization.

[0145] S312, generating a plurality of test tasks, and adjusting the position of each strain monitoring position in each test task to ensure that the first point remains coincident with the target position of the pressure and the damaged positions are at different positions.

[0146] First, the position of the test pipe is determined and fixed. In the embodiment of the present application, several damage location scenarios that are desired to be measured are when the test pipe does not undergo horizontal deflection but is only subjected to vertical soil-based settlement, and the changes in strain on the pipe when damage occurs at different positions.

[0147] Therefore, in the embodiment of the present application, the positions of the first point, the second point and the third point need to be changed to ensure that each time the first point and the target position of the pressure are overlapped, the damaged position can be at a different position on the pipeline.

[0148] S313, applying pressure in a fixed vertical downward direction.

[0149] S314, generating strain assessment results of a plurality of strain monitoring positions to generate an ideal comparison list for damage location, wherein the ideal comparison list for damage location includes a plurality of ideal comparison items, and the ideal comparison items are corresponding conversion coefficients under ideal conditions between the strain data of each strain monitoring position and the distance between the damage position and each strain monitoring position.

[0150] The reaction frame applies pressure to the test tube, and the value changes of the optical fiber sensor and displacement sensor on the test tube are recorded at the same time, so as to calculate and generate an ideal comparison list for damage location.

[0151] This list can represent the strain data size monitored at each strain monitoring position when there is only vertical settlement, when damage occurs at a certain position on the pipeline, and when it is subjected to the magnitude of the x force, and the damage position, the magnitude of the force and the strain data of each strain monitoring position are associated to obtain a conversion coefficient to generate the corresponding ideal comparison item. Multiple ideal comparison items together constitute the ideal comparison list for damage location.

[0152] When the subsequent pipeline is put into use, it is only necessary to calculate the strain data at each strain monitoring position in the pipeline with the conversion coefficient of the corresponding soil settlement pressure to determine whether damage has occurred at a certain position of the pipeline. If the situation matches, the predicted position of the pipeline damage can be directly obtained based on the ideal comparison item for positioning.

[0153] In other embodiments, a damage determination test is performed according to a plurality of strain monitoring positions and strain assessment results on a test tube, and a damage location assessment result is generated based on the test results, including the following steps:

[0154] S320, adding a damage site on the test tube.

[0155] S321, generating multiple test tasks, and adjusting the position of each strain monitoring position in each test task to ensure that the damage position is at different positions under different strain environments.

[0156] S322, maintaining pressure in a vertical downward direction under different strain environments.

[0157] S323, generating strain assessment results of a plurality of strain monitoring positions to generate a non-ideal comparison list for damage location, wherein the non-ideal comparison list for damage location includes a plurality of non-ideal comparison items under different strain environments, wherein the non-ideal comparison items are corresponding conversion coefficients between the strain data of each strain monitoring position-the distance between the damage position and each strain monitoring position under different strain environments.

[0158] The difference between the embodiment of the present application and the previous embodiment is that in the embodiment of the present application, it is not necessary to ensure that the first point remains overlapped with the target position of the pressure. Instead, on the basis of changing the positions of the first point, the second point and the third point to equivalently replace the position of the damaged position, it is also necessary to change the position of the first point each time the pressure test is performed, so as to simulate the changes in strain data at each position when damage occurs under different strain environments.

[0159] The other steps are the same as the previous embodiment, so that a comparison list can be obtained, which contains the strain data of each point of the pipeline when damage occurs at different locations in different strain environments. In this way, in actual pipeline operation, as long as the posture of the pipeline is determined and combined with the strain data of the three detected positions and the ratio relationship between the strain data, it can be determined whether damage occurs and the location of the damage.

[0160] In other embodiments, collecting real-time pipeline parameters and inputting the real-time pipeline parameters into a pipeline management and monitoring model to output pipeline status information includes the following steps:

[0161] Real-time pipeline parameters include pipeline strain parameters and pipeline environmental parameters.

[0162] S510, predicting the pipeline receiving pressure based on the pipeline environmental parameters and the mechanism influence coefficient.

[0163] The pipeline environmental parameters are characterized by the soil in which the pipeline is buried and the vehicle load information. By combining the detected pipeline environmental parameters with the corresponding mechanism influence coefficient of the soil, the soil pressure that the pipeline needs to withstand and other factors such as vehicle load pressure, building pressure, etc. can be predicted and calculated.

[0164] S520, predicting the current strain environment of the pipeline according to the pipeline receiving pressure combined with the pipeline strain parameters at each strain monitoring position on the pipeline, and generating a first state based on the current strain environment.

[0165] The strain environment of the current pipeline is predicted by combining the strain data collected at each strain monitoring position on the current pipeline with the current pipeline receiving pressure, and the strain environment corresponds to the first state.

[0166] S530, estimating whether the current pipeline strain parameter of the pipeline exceeds a preset ideal strain value to generate a second state.

[0167] Whether the strain data of each point of the pipeline is greater than the preset ideal strain value is determined to determine whether the pipeline may be deformed due to excessive pressure, and the second state is generated accordingly.

[0168] S540, comparing the pipeline strain parameter with the damage location assessment result corresponding to the current strain environment to generate a third state.

[0169] The pipeline strain parameters of each strain monitoring position on the pipeline are compared and matched with the comparison list in the damage location assessment result corresponding to the strain environment corresponding to the current first state to determine whether pipeline damage has occurred and locate the position of the damage, and generate the third state accordingly.

[0170] S550, integrating the first state, the second state, and the third state into pipeline state information.

[0171] The overall status information of the pipeline is determined by comprehensively evaluating several sub-states, including whether the current posture of the pipeline is normal, whether there is a hidden danger of deformation, whether it may be damaged, and the location of the damage.

[0172] The embodiment of the present application also discloses a pipeline integrated management and monitoring system for implementing the above method.

[0173] The implementation principle is:

[0174] By conducting soil mechanism and pipeline equivalent displacement deformation tests and damage determination tests, an assessment model for the pipeline is integrated and established before the pipeline is buried and used. By inputting the data monitored on the pipeline in subsequent use into the model to obtain the output analysis results, and by performing intelligent operation and maintenance and information display on the status of the pipeline environment and the status of the pipeline structure, a perception management platform integrating detection, assessment, analysis and visualization is generated.

[0175] It should be understood that although the steps in the flowchart of the accompanying drawings are shown in sequence according to the instructions of the arrows, these steps are not necessarily performed in the order indicated by the arrows. Unless otherwise clearly stated in this document, the execution of these steps is not strictly limited in order and can be performed in other orders.

[0176] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pipeline integrated management and monitoring method, characterized in that: The following steps are involved: Collect soil at monitoring locations and conduct mechanism tests to generate soil stress assessment results; Collect the target pipe selection and select the corresponding test pipe based on the target pipe selection, select several strain monitoring positions on the test pipe and perform displacement deformation test, and generate strain evaluation results based on the test results. Specifically, Based on the outer diameter of the target pipe material, a PVC pipe with the same outer diameter is selected as the test pipe, a theoretical maximum pressure acceptance point is selected as the first point on the cross section of the test pipe, and a line is connected between the first point and the center of the test pipe to obtain a reference line, and points on the cross section of the test pipe that are located on both sides of the reference line and connected to the center and are 90 degrees from the reference line are selected as the second point and the third point respectively; Placing an optical fiber sensor and a displacement sensor passing through the first point, the second point and the third point on the test tube respectively; Applying pressure in a fixed vertical downward direction and changing the deflection angle of the test tube to simulate different strain environments; Acquiring wavelength change data detected by the optical fiber sensor and displacement change data detected by the displacement sensor in different strain environments; Based on the wavelength change data and the displacement change data, respectively, the strain data is converted to obtain a first strain result and a second strain result; Comparing and analyzing the first strain result and the second strain result to generate the strain assessment result; Performing a damage determination test according to a plurality of strain monitoring positions on the test tube and the strain assessment result, and generating a damage location assessment result based on the test result; Training and generating a pipeline management monitoring model based on the soil stress assessment result, the strain assessment result and the damage location assessment result; Collecting real-time pipeline parameters and inputting the real-time pipeline parameters into the pipeline management and monitoring model to output pipeline status information; Graphic processing is performed for visual display, and the displayed content includes real-time pipeline parameters, pipeline status information, and early warning information.

2. The pipeline integrated management and monitoring method according to claim 1, characterized in that: The soil at the monitoring location is collected and the mechanism test is performed to generate the soil stress assessment results, including the following steps: Collect samples on site; Selecting a test sample of corresponding weight from the field sample based on the test item; Conducting a liquid-plastic limit test, a soil particle gradation density test, and a consolidation test based on the test samples, respectively, and generating a test score based on a number of test results; A mechanism influence coefficient is generated based on a number of the test scores, and the mechanism influence coefficient is defined as the soil stress evaluation result.

3. The pipeline integrated management and monitoring method according to claim 1, characterized in that: Placing an optical fiber sensor and a displacement sensor passing through the first point, the second point and the third point on the test tube respectively comprises the following steps: Obtaining the length x of the test tube; Obtaining the resolution y of the optical fiber sensor; The number of the displacement sensors is x / y+2, wherein two of the displacement sensors are disposed at two ends of the test tube, and x / y of the displacement sensors are evenly arranged on the test tube.

4. The pipeline integrated management and monitoring method according to claim 1, characterized in that: The pressure is applied in a fixed vertical downward direction, and the deflection angle of the test tube is changed to simulate different strain environments, including the following steps: Detecting the positional relationship between each of the strain monitoring positions and the pressure in the vertical direction; When the target position of the pressure coincides with the first point, the strain environment is vertical settlement; When the target position of the pressure is between the first point and the second point, or between the first point and the third point, the strain environment is vertical settlement+horizontal displacement; When the target position of the pressure coincides with the second point or the third point, the strain environment is vertical settlement+horizontal offset; When the target position of the pressure is between the second point and the third point, and the first point does not exist in the direction of the pressure, the strain environment is a horizontal offset; When the target position of the pressure is between the second point and the third point, and the first point exists in the direction of the pressure, the strain environment is a vertical bulge offset.

5. The pipeline integrated management and monitoring method according to claim 3 is characterized in that: Before the displacement deformation test, the following steps are also included: Performing a pre-test optimization task, selecting a square steel tube as a test tube, and setting the displacement sensor on the test tube; Applying pressure on the square steel tube and calculating the absolute displacement according to the detection result of the displacement sensor; Comparing the absolute displacement with the preset ideal displacement under different stiffness-pressure conditions to generate adjustment requirements, and generating a test optimization plan based on the adjustment requirements; The test parameters of the displacement deformation test are modified based on the test optimization scheme, and the test parameters include pressure magnitude, pressure direction, pressure application position, and pressure application speed.

6. The pipeline integrated management and monitoring method according to claim 1, characterized in that: Performing a damage determination test according to a plurality of strain monitoring positions on the test tube and the strain assessment result, and generating a damage location assessment result based on the test result, comprises the following steps: adding a damaged site on the test tube; Generate a plurality of test tasks, and adjust the position of each strain monitoring position in each test task to ensure that the first point remains coincident with the target position of the pressure and the damaged positions are respectively at different positions; The pressure is applied in a fixed vertical downward direction; Generate strain assessment results of several strain monitoring positions to generate an ideal comparison list for damage location, wherein the ideal comparison list for damage location includes several ideal comparison items, and the ideal comparison items are corresponding conversion coefficients under ideal conditions between the strain data of each strain monitoring position and the distance between the damage position and each strain monitoring position.

7. The pipeline integrated management and monitoring method according to claim 1, characterized in that: Performing a damage determination test according to a plurality of strain monitoring positions on the test tube and the strain assessment result, and generating a damage location assessment result based on the test result, comprises the following steps: adding a damaged site on the test tube; Generate multiple test tasks, and adjust the position of each strain monitoring position in each test task to ensure that the damage position is at different positions under different strain environments; Maintaining the application of pressure in a vertical downward direction under different said strain environments; Generate strain assessment results of several strain monitoring positions to generate a non-ideal comparison list for damage location, wherein the non-ideal comparison list for damage location includes non-ideal comparison items under several different strain environments, and the non-ideal comparison items are corresponding conversion coefficients between the strain data of each strain monitoring position and the distance between the damage position and each strain monitoring position under different strain environments.

8. The pipeline integrated management and monitoring method according to claim 2, characterized in that: Collecting real-time pipeline parameters and inputting the real-time pipeline parameters into the pipeline management and monitoring model to output pipeline status information includes the following steps: The real-time pipeline parameters include pipeline strain parameters and pipeline environmental parameters; Predicting pipeline receiving pressure based on the pipeline environmental parameters combined with the mechanism influence coefficient; Predicting the current strain environment of the pipeline according to the pressure received by the pipeline combined with the pipeline strain parameters at each strain monitoring position on the pipeline, and generating a first state based on the current strain environment; Inferring whether the current pipeline strain parameter of the pipeline exceeds a preset ideal strain value to generate a second state; Comparing the pipeline strain parameter with the damage location assessment result corresponding to the current strain environment to generate a third state; The first state, the second state and the third state are integrated into the pipeline state information.

9. A pipeline integrated management and monitoring system, characterized in that: Used to implement the method according to any one of claims 1 to 8.

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