Tunnel pipeline convergence deformation monitoring method and system

Abstract

The application provides a tunnel pipeline convergence deformation monitoring method and system, an angle measuring device is arranged on a pipe piece, and inclination information of the pipe piece is dynamically monitored; reference position information of the pipe piece is determined according to an installation position of the pipe piece, and endpoint coordinates of each pipe piece are determined; a least square circle error evaluation method is used to determine a least square circle on a target section according to the endpoint coordinates of the pipe piece, the measured points are compared with the least square circle, and pipe ring roundness error is obtained; the endpoint coordinates of each pipe piece, a radius corresponding to the pipe piece and a central angle corresponding to the pipe piece are used to fit the coordinates between the endpoints by using a polar coordinate method, a circular arc curve corresponding to each pipe piece is fitted according to the coordinates between the endpoints corresponding to each pipe piece, and a curve diagram of the whole pipe ring is formed by splicing, the curve diagram is used to reflect the whole pipeline deformation, a tunnel radial shrinkage amount is determined according to the curve diagram, and a pipeline convergence deformation monitoring result is determined according to the pipe ring roundness error and the tunnel radial shrinkage amount.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel monitoring, in particular to a tunnel pipeline convergence deformation monitoring method and system. BACKGROUND

[0002] This section is intended to provide background or context to the embodiments of the application recited in the claims. The description herein does not constitute admission that the prior art is prior art nor does it constitute an admission of any description in this section as prior art to an application described herein and infringed thereby.

[0003] In shield construction, the tunnel support adopts the form of prefabricated concrete segment assembly lining. Due to the connection of multiple segments by bolts, improper assembly or disengagement from the tail shield after bearing external pressure will cause large or small deformation of the segment ring, thereby affecting the quality of the formed tunnel, and in severe cases, even causing safety accidents such as leakage and collapse.

[0004] Segment ring roundness measurement can be divided into two parts: current assembly ring measurement and periodic monitoring of formed segment rings. The current ring refers to the 10-20 rings just after disengaging from the tail shield. At this time, due to the non-visibility space formed by the rear supporting occupying the position and the difficulty of measurement and wiring caused by large diameter tunnels, tunnel deformation monitoring is difficult. In the prior art, a laser range finder is usually used to realize automatic monitoring at fixed points, but this method needs to be corrected regularly and the cable is time-consuming and laborious to pull and arrange; the Barrett convergence measurement system is difficult to apply widely due to its price and space limitations; the three-dimensional laser scanning measurement accuracy is affected by data acquisition and processing methods, and cannot work in non-visibility space; in actual assembly, multiple assembly points are selected to meet the requirements of shield tail gap, stroke and turning, and segment ring deformation is mostly concentrated in the upper half, but the convergence deformation modeling method mentioned in the prior art is only applicable to the case where k blocks are located at the top, and it is not universal for multi-point assembly mode.

[0005] In summary, there is an urgent need for a technical solution that can overcome the above-mentioned defects and improve the tunnel pipeline convergence deformation monitoring. SUMMARY

[0006] To solve the problems existing in the prior art, the present application provides a tunnel pipeline convergence deformation monitoring method and system.

[0007] In a first aspect of the embodiments of the present application, a tunnel pipeline convergence deformation monitoring method is provided, comprising:

[0008] An angle measuring device is arranged on the segment, and the angle measuring device is used to dynamically monitor the inclination information of the segment;

[0009] According to the installation position of the segment, the reference position information of the segment is determined, and according to the inclination information, the reference position information and the chord length information of the segment, the endpoint coordinates of each segment are determined;

[0010] Based on the endpoint coordinates of each segment, the least squares circle on the target section is determined using the least squares roundness error evaluation method. The measured points are then compared with the least squares circle to obtain the roundness error of the pipe ring.

[0011] Based on the endpoint coordinates, the corresponding radius, and the corresponding central angle of each segment, the coordinates between the endpoints are fitted using polar coordinates. Based on the coordinates between the endpoints of each segment, the corresponding arc curve of each segment is fitted and spliced ​​together to form the overall curve of the pipe ring. This curve is used to reflect the overall deformation of the pipeline and to determine the radial shrinkage of the tunnel based on this curve.

[0012] The pipeline convergence deformation monitoring results are determined based on the pipe ring roundness error and the tunnel radial shrinkage.

[0013] In a second aspect of the present invention, a tunnel pipeline convergence deformation monitoring system is provided, comprising:

[0014] An angle measuring device is installed on the tunnel lining segment to dynamically monitor the inclination angle information of the segment;

[0015] The host computer, used to display the pipeline convergence deformation, includes: an endpoint coordinate determination module, a pipe ring roundness error analysis module, a tunnel radial shrinkage calculation module, and a data processing module; among which,

[0016] The endpoint coordinate determination module is used to determine the reference position information of the tunnel segment based on the installation position of the tunnel segment, and to determine the endpoint coordinates of each tunnel segment based on the inclination angle information, reference position information and chord length information of the tunnel segment.

[0017] The pipe ring roundness error analysis module is used to determine the least squares circle on the target section based on the endpoint coordinates of each pipe segment using the least squares roundness error evaluation method, and compare the measured points with the least squares circle to obtain the pipe ring roundness error;

[0018] The tunnel radial shrinkage calculation module is used to fit the coordinates between the endpoints of each segment using polar coordinates, based on the endpoint coordinates, the radius of the segment, and the central angle of the segment. It then fits the arc curve of each segment based on the coordinates between the endpoints of each segment and splices them together to form a curve of the entire pipe ring. This curve is used to reflect the overall deformation of the pipeline and to determine the radial shrinkage of the tunnel.

[0019] The data processing module is used to determine the pipeline convergence deformation monitoring results based on the pipe ring roundness error and the tunnel radial shrinkage.

[0020] In a third aspect of the embodiments of the present application, a computer device is provided, which comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the tunnel pipeline convergence deformation monitoring method when executing the computer program.

[0021] In a fourth aspect of the embodiments of the present application, a computer readable storage medium is provided, which stores a computer program, and the computer program implements the tunnel pipeline convergence deformation monitoring method when executed by a processor.

[0022] In a fifth aspect of the embodiments of the present application, a computer program product is provided, which comprises a computer program, and the computer program implements the tunnel pipeline convergence deformation monitoring method when executed by a processor.

[0023] The tunnel pipeline convergence deformation monitoring method and system provided by the present application are universal for multi-point assembly mode, can monitor the roundness and convergence deformation of pipelines at different assembly points, have low requirements on measurement space, effectively reduce measurement cost, improve measurement efficiency, and can provide early warning for deformation overrun through monitoring tunnel pipeline convergence deformation, so that workers can repair the tunnel pipeline in time, ensure the stability and safety of the tunnel pipeline, and avoid the occurrence of construction risks. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 is a flowchart of a tunnel pipeline convergence deformation monitoring method of an embodiment of the present application.

[0026] Figure 2 is an exemplary scene diagram of the present application.

[0027] Figure 3 is a relationship diagram of a k block located at point 5 in a specific embodiment of the present application.

[0028] Figure 4 is a flowchart of error evaluation using least square circle in an embodiment of the present application.

[0029] Figure 5A is a diagram of a least square circle of an undeformed pipeline ring in a specific embodiment of the present application.

[0030] Figure 5B is a diagram of a least square circle of a deformed pipeline ring in a specific embodiment of the present application.

[0031] Figure 6 is a flowchart of calculating the tunnel radial shrinkage amount by using the polar coordinate method according to an embodiment of the present application.

[0032] Figure 7A is a schematic diagram of the complete pipe segment circular arc fitting splicing result according to a specific embodiment of the present application.

[0033] Figure 7B is a schematic diagram of the deformed pipe segment circular arc fitting splicing result according to a specific embodiment of the present application.

[0034] Figure 8 is a schematic diagram of the tunnel pipeline convergence deformation monitoring system architecture according to an embodiment of the present application.

[0035] Figure 9 is a schematic diagram of the computer device structure according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] The principles and spirits of the present application will be described below with reference to a number of exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, and in no way limit the scope of the present application. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0037] Those skilled in the art know that the embodiments of the present application can be implemented as a system, a device, an apparatus, a method or a computer program product. Therefore, the present disclosure can be embodied in the form of a complete hardware, a complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0038] According to the embodiments of the present application, a tunnel pipeline convergence deformation monitoring method and system are provided, which relate to the technical field of tunnel monitoring.

[0039] The principles and spirits of the present application will be described below with reference to a number of exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, and in no way limit the scope of the present application. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0040] Figure 1 is a schematic diagram of the tunnel pipeline convergence deformation monitoring method according to an embodiment of the present application. As shown in Figure 1 , the method comprises:

[0041] S1, an angle measuring device is arranged on the pipe segment, and the angle measuring device is used to dynamically monitor the inclination information of the pipe segment;

[0042] S2, determining reference position information of the segment according to the installation position of the segment, and determining end point coordinates of each segment according to the inclination information, the reference position information and the chord length information of the segment;

[0043] S3, determining a least square circle on the target section by using a least square circle error evaluation method according to the end point coordinates of each segment, and comparing the measured points with the least square circle to obtain a pipe ring roundness error;

[0044] S4, fitting the coordinates between the end points by using a polar coordinate method according to the end point coordinates of each segment, the radius corresponding to the segment and the central angle corresponding to the segment, fitting the circular arc curve corresponding to each segment according to the coordinates between the end points corresponding to each segment, and splicing to form a curve diagram of the whole pipe ring, the curve diagram is used for reflecting the whole pipeline deformation, and the tunnel radial shrinkage is determined according to the curve diagram;

[0045] S5, determining the pipeline convergence deformation monitoring result according to the pipe ring roundness error and the tunnel radial shrinkage.

[0046] The application has universality for multi-point assembly mode, can monitor the pipe ring roundness and convergence deformation of different assembly points on the basis of not affecting the construction progress and safety, the overall scheme has low requirement on the measurement space, can effectively reduce the measurement cost and improve the measurement efficiency, can prewarn the deformation overrun through monitoring the tunnel pipeline convergence deformation, the staff can timely repair the tunnel pipeline, ensures the stability and safety of the tunnel pipeline, and avoids the occurrence of construction risks.

[0047] In order to more clearly explain the above-mentioned tunnel pipeline convergence deformation monitoring method, the following will be described in detail in combination with each step.

[0048] In S1, an angle measuring device is arranged on the segment, and the inclination information of the segment is dynamically monitored by using the angle measuring device.

[0049] Reference Figure 2 is a schematic diagram of an exemplary scene of the application. Figure 2 As shown in the figure, six segments A1, A2, A3, B1, B2 and k are arranged on the same circumference of the pipeline.

[0050] Among them, the six segments include three standard blocks, two adjacent blocks and one top block; the standard blocks are A1, A2 and A3, the adjacent blocks are B1 and B2, and the top block is k.

[0051] The end points (i.e. monitoring points) of the segments are A, B, C, D, E and F.

[0052] Specifically, a support 120 is arranged on each segment, and an angle measuring device 110 is arranged on each support 120.

[0053] The angle measuring devices 110 arranged on the segments are located on the same circumference; the parallelism of the angle measuring devices and the segment chord is less than a preset parallelism threshold.

[0054] The data receiving device 130 collects the inclination angle information monitored by each angle measuring device 110 and sends the information to the upper computer 200 to calculate the convergence deformation of the tunnel pipeline.

[0055] Specifically, the assembly point position refers to the position of the middle part of the k block (capping block). The installation position of the k block is located at 16 assembly point positions of the circumference (360°), and each assembly point position is spaced by 22.5°. Starting from the top, the installation position of the k block corresponds to point 1 to point 16 in the clockwise rotation. For example, Figure 2 The installation position of the k block in corresponds to point 1, the installation position of the k block is rotated 22.5° clockwise from point 1 to correspond to point 2; the installation position of the k block is rotated 45° clockwise from point 1 to correspond to point 3, and so on, and point 4 to point 16 can be obtained in this way.

[0056] In S2, the reference position information of the segment is determined according to the installation position of the segment, and the end point coordinates of each segment are determined according to the inclination angle information, the reference position information and the chord length information of the segment.

[0057] Taking the first end point closest to the bottom as the reference point and taking the clockwise direction as the positive direction, the coordinates of the reference point are obtained by the sine and cosine theorem according to the included angle between the reference point and the vertical direction, the center position information and the segment radius, and taking the included angle between the segment chord and the horizontal positive direction as the segment inclination angle;

[0058] The coordinates of other end points are sequentially calculated according to the coordinates of the reference point;

[0059] According to the 16 installation positions of the k block (capping block), a mathematical calculation model corresponding to each installation position is established; wherein the mathematical calculation model is used to calculate the coordinates of the reference point and the coordinates of other end points.

[0060] Reference Figure 3 , the k block of a specific embodiment of the present application is located at point 5. As shown in Figure 3 , taking point 5 where the k block is rotated by 90 degrees as an example, taking the end point (C point) closest to the bottom as the reference point; the C point is the end point between the segment B2 and the segment A3.

[0061] Taking the clockwise direction as the positive direction, at this time, the included angle between the reference point (C point) and the vertical direction is s, taking O point as the center, the radius (line segment OC) of the segment is a known quantity, and taking the included angle between the segment chord and the horizontal positive direction as the segment inclination angle, the coordinates of the reference point (C point) can be calculated according to the sine and cosine theorem, and then the coordinates of each end point B, A, F, E and D are sequentially calculated;

[0062] According to the coordinates of each endpoint, the central angle of the circular arc, and the radius of curvature information, an evaluation index can be completed by using the least square circle and the radial shrinkage amount. In an embodiment, the specific method for calculating the endpoint coordinates is as follows:

[0063] Taking the center O of the circle as a reference point, a right triangle OPC is constructed according to the radius OC and the deflection angle s, and the coordinates of point C are calculated according to the sine theorem OC x sin(s). x1 y1 In the calculation, in order to ensure that the center of the fitting circle is at the origin of the coordinate axis, the angle on the right side of the vertical direction (y-axis) is negative, and the angle on the left side is positive.

[0064] Taking the coordinates of point C as a reference, a right triangle BQC is constructed according to the chord length (line segment BC) of the pipe segment A3 and the horizontal positive angle, and then the horizontal coordinate and the vertical coordinate of point B relative to point C are obtained according to the sine theorem BC x cos(c) and BC x sin(c) respectively, and then the coordinates of point B are calculated based on the coordinates of point C. x1 y1

[0065] Further, the coordinates of point A are calculated based on the chord length (line segment AB) of the pipe segment A2 and the horizontal positive angle.

[0066] In this way, the coordinates of points F, E and D can be obtained, and finally a closed loop can be formed to obtain the initial set coordinates of point C (C x1 y1 Because there is a certain error in actual measurement, the final obtained coordinates of point C are different from the initial set value, and according to the adjustment processing principle, the change value of the coordinates of point C is distributed to each endpoint according to the weight of each chord length, so that the coordinates of monitoring points A to F are obtained.

[0067] Because the k block has 16 installation positions, the starting points of the bottom corresponding to each assembly point are different, so the angles of the pipe segments with the horizontal positive direction are also different. Correspondingly, in the calculation of the endpoint coordinates, the calculation process is not completely consistent, but it generally follows a principle, that is, if the next calculated point is located above or in the horizontal direction of the current point, it is positive, and if it is located below, it is negative. For this purpose, the present application establishes 16 mathematical calculation models corresponding to the 16 points of the k block, and each mathematical calculation model corresponds to a calculation method (S1, S2, …, S 16 ) of a point. In actual application scenarios, the corresponding calculation method is selected according to the point. For example, if the point of the k block is 10, the mathematical calculation model of S 10 is selected for calculation.

[0068] ​​​​In S3, according to the end point coordinates of each pipe piece, the least square circle error evaluation method is used to determine the least square circle on the target section, and the measured points are compared with the least square circle to obtain the pipe ring roundness error.

[0069] Reference Figure 4 is a flowchart of the error evaluation using the least square circle according to an embodiment of the present application. As shown, the specific process is as follows: Figure 4

[0070] S301, according to the point position corresponding to the k block, select the corresponding mathematical calculation model from the 16 mathematical calculation models, determine the coordinates of each end point of the pipe piece by using the mathematical calculation model, and determine the centroid coordinates of the fitting circle according to the end point coordinates of each pipe piece.

[0071] S302, according to the centroid coordinates of the fitting circle, the least square method is used to fit the center and radius of the circle, and the fitting circle is drawn.

[0072] S303, calculate the distance between the end point coordinates of each pipe piece and the fitting circle, and determine the roundness error according to the difference between the farthest end point and the nearest end point.

[0073] Specifically, the least square roundness error evaluation method can be used to obtain the least square circle on the measured section. Further, by comparing the measured points with the least square circle, the pipe ring roundness error can be obtained, and the least square circle can be displayed in real time through the interface of the upper computer. Figure 5A and Figure 5B are respectively the least square circle of the undeformed pipe ring and the least square circle of the deformed pipe ring according to a specific embodiment of the present application, and the fitting circle (Fitting Circle) and each monitoring point (data) are shown in the figure. By comparison, it can be seen that the deformed pipe ring deviates from the end points of each pipe piece. The roundness error P can be obtained by subtracting the farthest monitoring point P1 from the nearest monitoring point P2, that is, P = P1-P2.

[0074] In S4, according to the end point coordinates of each pipe piece, the radius corresponding to the pipe piece and the central angle corresponding to the pipe piece, the coordinates between the end points are fitted by using the polar coordinate method, and the circular arc curve corresponding to each pipe piece is fitted according to the coordinates between the end points corresponding to each pipe piece, and the curve graph of the whole pipe ring is formed by splicing, which is used to reflect the overall deformation of the pipeline, and the tunnel radial shrinkage is determined according to the curve graph.

[0075] Reference Figure 6 is a flowchart of the process of calculating the tunnel radial shrinkage using the polar coordinate method according to an embodiment of the present application. As shown, Figure 6 the specific process is as follows:

[0076] ​S401. Based on the points corresponding to the k blocks, select the corresponding mathematical calculation model from 16 mathematical calculation models, use the mathematical calculation model to determine the coordinates of each end point of the segment, and determine the center of the arc corresponding to the segment based on the end point coordinates and the radius of the segment.

[0077] S402: Determine the quadrant based on the endpoint coordinates, convert the two rectangular coordinates into polar coordinates, fit the coordinates between the two endpoints (the point in the middle of the segment's arc), and then fit the corresponding arc curve of each segment based on the coordinates obtained on each segment, and splice them together to form the curve of the entire segment ring.

[0078] S403, after fitting the overall circumferential curve of the pipe ring, calculate the diameters in the transverse and longitudinal directions, and use the ratio of the diameters as the radial shrinkage of the tunnel.

[0079] Specifically, taking segment A2 as an example, based on the coordinates of both ends of the segment (A... x1 A y1 (B) x1 B y1 Given the radius r, the center of the arc corresponding to the segment can be determined.

[0080] Draw each arc using polar coordinates; determine the quadrant based on the endpoint coordinates, then convert the two rectangular coordinates to polar coordinates and fit the arc corresponding to the segment. (Reference) Figure 7A and Figure 7B The figures shown are schematic diagrams of the fitting and splicing results of the complete segment and the deformed segment, respectively. By comparison, it can be seen that there is a certain deviation in the fitting and splicing results of the deformed segment.

[0081] After obtaining the circumferential curve corresponding to the entire pipe ring, calculate the diameters in the transverse and longitudinal directions, and use the ratio K as the radial shrinkage of the tunnel, that is, K = diameter in the transverse direction / diameter in the longitudinal direction.

[0082] In S5, the specific procedure for determining the pipeline convergence deformation monitoring results based on the pipe ring roundness error and tunnel radial shrinkage is as follows:

[0083] Based on the different deformation requirements of tunnels, thresholds are set for the pipe ring roundness error and the radial shrinkage of the tunnel.

[0084] If the roundness error of the pipe ring and the radial shrinkage of the tunnel exceed the set threshold, an early warning will be issued for the location of the deformed pipe ring.

[0085] In practical applications, the host computer displays the status of the tunnel pipe ring in real time. When the pipe ring is significantly deformed, it provides timely warnings about the location of the pipe ring and reminds staff to repair the tunnel pipeline, ensuring construction safety and avoiding construction risks.

[0086] The application installs an angle measuring device on a segment to monitor the inclination angle change of the segment, and establishes a coordinate system to obtain the segment endpoint position coordinates by using the segment chord length and the measured angle. According to the monitoring point coordinates, the center angle of each segment and the curvature radius, a circular ring evaluation index is established, and the least square circle is used to evaluate the circularity error; the polar coordinate method is used to fit each segment arc to monitor and warn the deformation of the tunnel ring. The application can conveniently and accurately monitor the convergence deformation of the tunnel ring of the latest assembled 10-20 segments, and give a pre-warning when the deformation exceeds the limit, so that the tunnel pipeline can be repaired in time to ensure the stability and safety of the tunnel pipeline and avoid the occurrence of construction risks.

[0087] It should be noted that although the operations of the method of the application are described in a particular order in the above embodiments and drawings, this does not require or imply that the operations must be performed in this particular order, or that all of the shown operations must be performed to achieve the desired result. Additionally or alternatively, certain steps can be omitted, a plurality of steps can be combined into one step, and / or one step can be divided into a plurality of steps.

[0088] After introducing the method of the exemplary embodiments of the application, next, reference is made to Figure 8 The tunnel pipeline convergence deformation monitoring system of the exemplary embodiments of the application is introduced.

[0089] The implementation of the tunnel pipeline convergence deformation monitoring system can refer to the implementation of the above method, and the repeated parts will not be described again. The term "module" or "unit" used below can be a combination of software and / or hardware that achieves a predetermined function. Although the system described in the following embodiments is preferably implemented in software, hardware or a combination of software and hardware is also possible and contemplated.

[0090] Based on the same inventive concept, the application also proposes a tunnel pipeline convergence deformation monitoring system, as shown in the accompanying drawings, the system comprises: Figure 8 as shown, the system comprises:

[0091] The angle measuring device 110 is arranged on the segment to dynamically monitor the inclination angle information of the segment;

[0092] The host computer 200 is used to monitor the convergence deformation of the pipeline and comprises an endpoint coordinate determination module 210, a tunnel ring circularity error analysis module 220, a tunnel radial shrinkage amount calculation module 230 and a data processing module 240; wherein,

[0093] The endpoint coordinate determination module 210 is used to determine the reference position information of the segment according to the installation position of the segment, and determine the endpoint coordinates of each segment according to the inclination angle information, the reference position information and the chord length information of the segment;

[0094] The pipe ring roundness error analysis module 220 is used to determine the least squares circle on the target section based on the endpoint coordinates of each pipe segment using the least squares roundness error evaluation method, and compare the measured points with the least squares circle to obtain the pipe ring roundness error;

[0095] The tunnel radial shrinkage calculation module 230 is used to fit the coordinates between the endpoints using polar coordinates based on the endpoint coordinates, the radius of the corresponding segment, and the central angle of the corresponding segment. Based on the coordinates between the endpoints of each segment, it fits the arc curve corresponding to each segment and splices them together to form a curve of the entire pipe ring. This curve is used to reflect the overall deformation of the pipeline and determine the radial shrinkage of the tunnel.

[0096] The data processing module 240 is used to determine the pipeline convergence deformation monitoring results based on the pipe ring roundness error and the tunnel radial shrinkage.

[0097] In one embodiment, refer again Figure 8 The system also includes a data receiving device 130, which is used to collect tilt information monitored by various angle measuring devices 110 and send it to the host computer 200.

[0098] It should be noted that although several modules of the tunnel pipeline convergence deformation monitoring system have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more modules described above can be embodied in one module. Conversely, the features and functions of one module described above can be further divided and embodied by multiple modules.

[0099] Based on the aforementioned inventive concept, such as Figure 9 As shown, the present invention also proposes a computer device 900, including a memory 910, a processor 920, and a computer program 930 stored in the memory 910 and executable on the processor 920. When the processor 920 executes the computer program 930, it implements the aforementioned tunnel pipeline convergence deformation monitoring method.

[0100] Based on the aforementioned inventive concept, the present invention proposes a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the aforementioned tunnel pipeline convergence deformation monitoring method.

[0101] Based on the aforementioned inventive concept, this invention proposes a computer program product, which includes a computer program that, when executed by a processor, implements a method for monitoring convergence deformation of tunnel pipelines.

[0102] In actual assembly, the application is universal for multi-point assembly mode, can monitor the pipe ring roundness and convergence deformation of different assembly points, has low requirement on measurement space, effectively reduces measurement cost, improves measurement efficiency, prewarns deformation overrun through monitoring tunnel pipeline convergence deformation, enables workers to timely repair the tunnel pipeline, ensures the stability and safety of the tunnel pipeline, and avoids the occurrence of construction risks.

[0103] The acquisition, storage, use and processing of data in the technical solution of the application comply with relevant provisions of national laws and regulations.

[0104] Those skilled in the art will understand that embodiments of the application can be provided as methods, systems or computer program products. Therefore, the application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Moreover, the application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0105] The application is described with reference to flowcharts and / or block diagrams of methods and computer program products according to embodiments of the application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device that implements the flowcharts and / or block diagrams. Figure 1 a flow or multiple flows and / or blocks Figure 1 a system that implements the functions specified in one or more blocks or flows.

[0106] These computer program instructions can also be stored in a computer-readable memory that can direct the computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including instruction devices that implement the flowcharts and / or block diagrams. Figure 1 a flow or multiple flows and / or blocks Figure 1 a system that implements the functions specified in one or more blocks or flows.

[0107] These computer program instructions can also be loaded into a computer or other programmable data processing device, so that a series of operation steps are performed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide a device for implementing the flowcharts and / or block diagrams. Figure 1 a flow or multiple flows and / or blocks Figure 1steps of the functions specified in the one or more blocks.

[0108] Finally, it should be noted that the above-described embodiments are merely exemplary of the application and should not be used to limit its scope, and that the scope of the application is defined by the appended claims. Although the application has been described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, it is intended to embrace all such alternatives, modifications and variations as fall within the scope of the claims appended hereto.

Claims

1. A method for monitoring convergence deformation of tunnel pipelines, characterized in that, include: An angle measuring device is installed on the tunnel segment to dynamically monitor the inclination information of the tunnel segment; Based on the installation location of the tunnel segments, determine the reference position information of the tunnel segments. Based on the inclination angle information, reference position information and chord length information of the tunnel segments, determine the endpoint coordinates of each tunnel segment. Based on the endpoint coordinates of each segment, the least squares circle on the target section is determined using the least squares roundness error evaluation method. The measured points are then compared with the least squares circle to obtain the roundness error of the pipe ring. Based on the endpoint coordinates, the corresponding radius, and the corresponding central angle of each segment, the coordinates between the endpoints are fitted using polar coordinates. Based on the coordinates between the endpoints of each segment, the corresponding arc curve of each segment is fitted and spliced ​​together to form the overall curve of the pipe ring. This curve is used to reflect the overall deformation of the pipeline and to determine the radial shrinkage of the tunnel based on this curve. The pipeline convergence deformation monitoring results were determined based on the pipe ring roundness error and the tunnel radial shrinkage. Specifically, based on the endpoint coordinates of each tube segment, the least squares circle on the target cross-section is determined using the least squares roundness error evaluation method. The measured points are then compared with the least squares circle to obtain the tube ring roundness error, which includes: The centroid coordinates of the fitted circle are determined based on the endpoint coordinates of each segment. Based on the centroid coordinates of the fitted circle, the center and radius are fitted using the least squares method, and the fitted circle is plotted. Calculate the distance between the endpoint coordinates of each segment and the fitted circle, and determine the roundness error based on the difference between the farthest endpoint and the nearest endpoint.

2. The method according to claim 1, characterized in that, Six segments are installed on the same circumference of the pipeline, including three standard blocks, two adjacent blocks, and one capping block; The capping blocks are installed at 16 assembly points around the circumference, with each assembly point spaced 22.5° apart.

3. The method according to claim 2, characterized in that, Also includes: Install a bracket on each segment and set an angle measuring device on each bracket; The angle measuring devices installed on the tube segment are located on the same circumference; the parallelism between the angle measuring device and the chord length of the tube segment is less than a preset parallelism threshold.

4. The method according to claim 2, characterized in that, Based on the installation location of the tunnel segments, determine the reference position information of the segments. Based on the inclination angle information, reference position information, and chord length information of the segments, determine the endpoint coordinates of each segment, including: Using the first endpoint closest to the bottom as the reference point, and taking the clockwise direction as the positive direction, the coordinates of the reference point are obtained by using the law of sine and cosine based on the angle between the reference point and the vertical direction, the center position information, the radius of the segment, and the angle between the chord length of the segment and the positive horizontal direction as the segment inclination angle. The coordinates of the other endpoints are calculated sequentially based on the coordinates of the reference point; Based on the 16 installation positions of the capping block, a mathematical calculation model is established for each installation position; wherein, the mathematical calculation model is used to calculate the coordinates of the reference point and the coordinates of other endpoints.

5. The method according to claim 1, characterized in that, Based on the endpoint coordinates, corresponding radius, and central angle of each tunnel segment, the coordinates between the endpoints are fitted using polar coordinates. Then, based on the coordinates between the endpoints of each segment, a circular arc curve corresponding to each segment is fitted, and these curves are pieced together to form a complete tunnel ring curve. This curve reflects the overall deformation of the pipeline, and the radial shrinkage of the tunnel is determined based on this curve, including: Based on the endpoint coordinates of each segment and the corresponding radius of the segment, determine the center of the arc corresponding to the segment. Determine the quadrant based on the endpoint coordinates, convert the two rectangular coordinates into polar coordinates, and fit the arc corresponding to the segment. After fitting the overall circumferential curve of the pipe ring, the diameters in the transverse and longitudinal directions are calculated, and the ratio of the diameters is used as the radial shrinkage of the tunnel.

6. The method according to claim 1, characterized in that, The pipeline convergence deformation monitoring results are determined based on the pipe ring roundness error and the tunnel radial shrinkage, including: Based on the different deformation requirements of tunnels, thresholds are set for the pipe ring roundness error and the radial shrinkage of the tunnel. If the roundness error of the pipe ring and the radial shrinkage of the tunnel exceed the set threshold, an early warning will be issued for the location of the deformed pipe ring.

7. A tunnel pipeline convergence deformation monitoring system, characterized in that, include: An angle measuring device is installed on the tunnel lining segment to dynamically monitor the inclination angle information of the segment; The host computer, used to monitor pipeline convergence and deformation, includes: an endpoint coordinate determination module, a pipe ring roundness error analysis module, a tunnel radial shrinkage calculation module, and a data processing module; among which, The endpoint coordinate determination module is used to determine the reference position information of the tunnel segment based on the installation position of the tunnel segment, and to determine the endpoint coordinates of each tunnel segment based on the inclination angle information, reference position information and chord length information of the tunnel segment. The pipe ring roundness error analysis module is used to determine the least squares circle on the target section based on the endpoint coordinates of each pipe segment using the least squares roundness error evaluation method, and compare the measured points with the least squares circle to obtain the pipe ring roundness error; The tunnel radial shrinkage calculation module is used to fit the coordinates between the endpoints of each segment using polar coordinates, based on the endpoint coordinates, the radius of the segment, and the central angle of the segment. It then fits the arc curve of each segment based on the coordinates between the endpoints of each segment and splices them together to form a curve of the entire pipe ring. This curve is used to reflect the overall deformation of the pipeline and to determine the radial shrinkage of the tunnel. The data processing module is used to determine the pipeline convergence deformation monitoring results based on the pipe ring roundness error and the tunnel radial shrinkage. Specifically, the pipe ring roundness error analysis module is used for: The centroid coordinates of the fitted circle are determined based on the endpoint coordinates of each segment. Based on the centroid coordinates of the fitted circle, the center and radius are fitted using the least squares method, and the fitted circle is plotted. Calculate the distance between the endpoint coordinates of each segment and the fitted circle, and determine the roundness error based on the difference between the farthest endpoint and the nearest endpoint.

8. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method of any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method of any one of claims 1 to 6.

10. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the method of any one of claims 1 to 6.

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