A method and integrated system for measuring tunnel perimeter deformation without reference

Abstract

The present invention provides a method and an integrated system for measuring deformation around a tunnel without a reference, and relates to the technical field of tunnel engineering monitoring. The method includes setting up a total station and burying a first and a second reflective sheet on both sides of the tunnel wall, recording the installation positions of the first and the second reflective sheet and the total station; rotating the total station to aim at the first reflective sheet, taking the position of the first reflective sheet as the starting position, and then rotating the total station to aim at the second reflective sheet; obtaining the slant distance between the total station position point and the two reflective sheets, the height difference between the two reflective sheets, and the horizontal angle, rotating the total station to aim at the second reflective sheet, and obtaining the vertical distance between the second reflective sheet and the total station position point; after the above measurement is completed, reading the data collected by the total station, converting the data, and calculating the convergence value of the displacement around the section hole by judging the direction of the reflective sheet offset. The present invention can eliminate the measurement error caused by the asymmetric pasting position of the reflective sheets on both sides of the hole caused by human factors in the early stage.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel engineering monitoring, and in particular to a reference-free measurement method and integrated system for tunnel perimeter deformation. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] Tunnel monitoring and measurement is an indispensable part of tunnel construction today. Convergence around the tunnel is a must-measure item for tunnel monitoring and measurement. Tunnel convergence monitoring methods are divided into contact measurement and non-contact measurement. Contact measurement mainly uses a convergence meter for measurement. This method has low monitoring efficiency and is usually affected by the on-site construction environment. Non-contact measurement usually uses a total station to monitor the section. The traditional total station monitoring method relies on the total station's built-in resection function and known point station setting function to orient the total station, establish a geodetic coordinate system, establish the relative coordinates of the monitoring points, and obtain the convergence value of the tunnel displacement around the section through coordinate conversion, thereby achieving the purpose of monitoring. The limitation of this method is that in order to meet the requirements of the total station orientation, it is necessary to bury the reference point at an appropriate location, and the placement of the total station is relatively high, and the work in the preparation stage is relatively cumbersome.

[0004] The inventors found that when using the total station's angle measurement function to monitor the tunnel, due to the long distance between the tunnel walls on both sides, it is easy to cause human errors in the early stage of burying the reflectors, resulting in asymmetric positions of the reflectors on both sides of the tunnel wall, causing large errors in the total station's horizontal angle measurement process, affecting the reliability of the tunnel deformation monitoring results. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a reference-free measurement method and integrated system for tunnel perimeter deformation, which adopts the total station side measurement method and distance measurement method, and converts the collected data through mathematical methods to obtain the tunnel perimeter displacement convergence value.

[0006] According to some embodiments, the present disclosure adopts the following technical solutions:

[0007] A method for measuring tunnel perimeter deformation without a reference, comprising:

[0008] Set up the total station and bury the first and second reflectors on both sides of the tunnel wall, and record the installation positions of the first and second reflectors and the total station;

[0009] Rotate the total station to aim at the first reflector, take the position of the first reflector as the starting position, and then rotate the total station to aim at the second reflector;

[0010] Obtain the slant distance between the total station position point and the two reflectors, the height difference between the two reflectors, and the horizontal angle, rotate the total station and aim at the second reflector again, and obtain the vertical distance between the second reflector and the total station position point;

[0011] After the above measurements are completed, the data collected by the total station is read, the data is converted, and the displacement convergence value around the section hole is calculated by judging the direction of the reflective sheet offset.

[0012] According to some embodiments, the present disclosure adopts the following technical solutions:

[0013] An integrated system for measuring tunnel perimeter deformation without a reference, comprising:

[0014] The data acquisition module is used to set up the total station and bury the first and second reflective sheets on both sides of the tunnel wall, record the installation positions of the first and second reflective sheets and the total station; rotate the total station to aim at the first reflective sheet, take the position of the first reflective sheet as the starting position, and then rotate the total station to aim at the second reflective sheet;

[0015] Obtain the slant distance between the total station position point and the two reflectors, the height difference between the two reflectors, and the horizontal angle, rotate the total station and aim at the second reflector again, and obtain the vertical distance between the second reflector and the total station position point;

[0016] The displacement calculation module is used to read the data collected by the total station, transform the data, and calculate the displacement convergence value around the section hole by judging the direction of the reflective sheet offset.

[0017] According to some embodiments, the present disclosure adopts the following technical solutions:

[0018] A terminal device, characterized in that it includes a processor and a computer-readable storage medium, the processor is used to implement various instructions; the computer-readable storage medium is used to store multiple instructions, and the instructions are suitable for being loaded and executed by the processor. A method for measuring tunnel circumference deformation without a reference.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present disclosure provides a method for measuring the deformation of a tunnel without a reference. Compared with traditional monitoring methods, the method proposed in the present disclosure is more efficient. In the process of tunnel monitoring, it is not necessary to find a reference point for the orientation of the total station. It is only necessary to place the total station in a position with good visibility and convenient measurement, thus eliminating the tedious preparation work in the early stage. The present disclosure solves the measurement error problem caused by the asymmetric position of the buried reflective sheet due to human factors in the process of total station corner measurement through early data collection and later data conversion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure.

[0022] Figure 1 A schematic diagram of a flow chart of a method for measuring tunnel perimeter deformation without a reference provided in an embodiment of the present disclosure;

[0023] Figure 2 A relative position diagram of measuring points of the tunnel perimeter deformation measurement method without a reference provided in an embodiment of the present disclosure;

[0024] in, Figure 2 (a) is the relative position diagram when the reflector is offset upward;

[0025] Figure 2 (b) is a relative position diagram when the reflective sheet is offset to the upper left;

[0026] Figure 2 (c) is the relative position diagram when the reflector is offset to the upper right;

[0027] Figure 2 (d) is the relative position diagram when the reflective sheet is offset to the downward direction;

[0028] Figure 2 (e) is a relative position diagram when the reflector is offset to the lower left;

[0029] Figure 2 (f) in the figure is the relative position diagram when the reflective sheet is offset to the lower right. DETAILED DESCRIPTION

[0030] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0031] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] Example 1

[0034] The present disclosure provides a method for measuring tunnel perimeter deformation without a reference, comprising:

[0035] Step 1: Set up the total station and bury the first and second reflectors on both sides of the tunnel wall, and record the installation positions of the first and second reflectors and the total station;

[0036] Step 2: Rotate the total station to aim at the first reflector, take the position of the first reflector as the starting position, and then rotate the total station to aim at the second reflector;

[0037] Step 3: Obtain the slant distance between the total station position and the two reflectors, the height difference between the two reflectors, and the horizontal angle, rotate the total station and aim at the second reflector again, and obtain the vertical distance between the second reflector and the total station position;

[0038] Step 4: After the above measurement is completed, read the data collected by the total station, transform the data, and calculate the displacement convergence value around the section hole by judging the direction of the reflective sheet offset.

[0039] As an embodiment, the present disclosure proposes a mathematical algorithm to obtain the displacement convergence value of the tunnel perimeter of the monitoring section. The advantage is that there is no need to find a reference point for the total station during the initial use. The total station has low requirements for the placement position and only needs to be placed in a position with good visibility. When using the corner measurement mode to calculate the displacement convergence value of the tunnel perimeter, this method can eliminate the measurement error caused by the asymmetric pasting position of the reflective sheets on both sides of the tunnel perimeter due to human factors in the early stage. Specifically, as follows:

[0040] First, two reflective sheet monitoring points were set up on the left and right walls of the monitoring section, namely Figure 2 Point A and point C are shown in the figure. Point A is a hypothetical point symmetrical to point A. Due to human factors, monitoring points A and C are not arranged symmetrically. The position of point C is offset to the upper left of the cave wall relative to point A. The position relationship between point A and point C is shown in Figure 2 .

[0041] Before the monitoring section, find a location with good visibility and convenient operation to set up the total station, and record the location of the total station as location D. First, use the side measurement function of the total station, take the location of monitoring point A as the starting position, aim the total station at monitoring point A, rotate the total station until the total station aims at monitoring point C, and record the data measured by the total station as the slant distance L between the total station location D and monitoring points A and C. DA , L DC ; The height difference h between point C and point A. Use the angle measurement function of the total station to aim at monitoring point A, adjust the horizontal dial reading to 0 at point A, rotate the total station to aim at monitoring point C, and measure the horizontal angle between point A and point C as ∠α. Finally, use the distance measurement function of the total station, aim the total station at monitoring point C, and measure the vertical distance H between monitoring point C and total station position point D.

[0042] After the total station measurement is completed, the data collected by the total station is read and the data is converted using mathematical methods to obtain the convergence value L of the hole displacement around the monitoring section. AC ; The specific implementation methods are as follows:

[0043] Step 1: bury the first and second reflective sheets on both sides of the tunnel wall, and record the positions of the first reflective sheet and the second reflective sheet as position A and position C respectively.

[0044] Step 2: Set up the total station at a location with good visibility and convenient measurement; record the installation location of the total station as position D.

[0045] Step 3: Rotate the total station to aim at point A, use point A as the starting position, and then rotate the total station to aim at the second reflector;

[0046] Step 4: Obtain the slope distance L between the total station position point and the reflector through the total station's side measurement function and angle measurement function DA , L DC ; The height difference h and horizontal angle ∠α between the two reflectors.

[0047] Step 5: Turn the total station to aim at point C, and use the distance measurement function of the total station to obtain the vertical distance H between point C and the total station's position point.

[0048] Step 6: When the total station measurement is completed, read the collected data and use the following method to obtain the convergence value L of the hole displacement corresponding to the monitoring section: AC .

[0049] As an embodiment, by determining the direction of the reflective sheet offset, the method for calculating the displacement convergence value around the cross-section hole includes two situations, namely, the offset point is offset upward relative to the symmetrical point of the first reflective sheet position point and the offset point is offset downward relative to the symmetrical point of the first reflective sheet position point.

[0050] Among them, the first case is: when the offset point is offset upward relative to the symmetrical point of the first reflective sheet position point, the upward offset includes an upward offset, an upper left offset and an upper right offset. At this time, the height difference between the two reflective sheets is greater than 0.

[0051] That is, the offset point C is symmetrical to point A and is offset upward (directly above, upper left, upper right), such as Figure 2 As shown in (a), (b), and (c), at this time h>0;

[0052] The second situation is: when the offset point is offset downward relative to the symmetrical point of the first reflective sheet position point, the downward offset includes a straight downward offset, a lower left offset and a lower right offset. At this time, the height difference between the two reflective sheets is less than 0.

[0053] That is, the offset point C is offset downward (directly below, to the lower left, or to the lower right) relative to the symmetrical point A of point A. Figure 2 In (d)(e)(f), h<0 at this time;

[0054] Then, the data collected by the total station is read and converted by mathematical methods, using the Pythagorean theorem and the trigonometric cosine theorem to calculate the convergence value of the displacement around the hole.

[0055] Among them, in the first case: the offset point C is symmetrical to point A, and is offset upward (directly above, upper left, upper right) and h>0, the calculation method is:

[0056] 1) According to the Pythagorean theorem of triangles, the following formula is used to obtain the distance L from the total station position point D to the hypothetical point E: ED :

[0057]

[0058] Among them, point E is the intersection of the perpendicular line at point C and the plane where the measuring instrument position point D is located.

[0059] 2) According to the Pythagorean theorem of triangles, the following formula is used to obtain the distance L from the total station position point D to the hypothetical point B: DB :

[0060] LBE=Hh

[0061]

[0062] Among them, point B is the intersection of the vertical line at point C and the horizontal plane where point A is located.

[0063] 3) According to the triangle cosine theorem, the distance LAB between the reflector position point A and the assumed point B is obtained using the following formula:

[0064]

[0065] Among them, ∠α is the horizontal angle between point A and point C, that is, the angle between straight lines DA and DB.

[0066] 4) According to the Pythagorean theorem of triangles, the following formula is used to obtain the convergence value L of the displacement around the monitoring section: AC :

[0067]

[0068] Among them, in the second case: the offset point C is offset downward (directly below, lower left, lower right) relative to the symmetrical point A of point A, and h is less than 0; the calculation method is:

[0069] According to the Pythagorean theorem of triangles, the following formula is used to obtain the distance L from the total station position point D to the hypothetical point E DE :

[0070]

[0071] Among them, point E is the intersection of the perpendicular line at point C and the plane where the measuring instrument position point D is located.

[0072] According to the Pythagorean theorem of triangles, the following formula is used to obtain the distance L from the total station position point D to the hypothetical point B DB :

[0073] L BE =H+|h|

[0074]

[0075] Among them, point B is the intersection of the vertical line at point C and the horizontal plane where point A is located.

[0076] According to the triangle cosine theorem, the distance L between the reflector position point A and the assumed point B is obtained using the following formula: AB :

[0077]

[0078] Among them, ∠α is the horizontal angle between point A and point C, that is, the angle between straight lines DA and DB.

[0079] According to the Pythagorean theorem of triangles, the following formula is used to obtain the displacement convergence value L corresponding to the monitoring section: AC :

[0080]

[0081] Example 2

[0082] An embodiment of the present disclosure provides a reference-free integrated measurement system for tunnel perimeter deformation, including:

[0083] The data acquisition module is used to record the installation positions of the first and second reflective sheets and the total station; the total station is rotated to aim at the first reflective sheet, the position of the first reflective sheet is used as the starting position, and then the total station is rotated to aim at the second reflective sheet;

[0084] Obtain the slant distance between the total station position point and the two reflectors, the height difference between the two reflectors, and the horizontal angle, rotate the total station and aim at the second reflector again, and obtain the vertical distance between the second reflector and the total station position point;

[0085] The displacement calculation module is used to read the data collected by the total station, transform the data, and calculate the displacement convergence value around the section hole by judging the direction of the reflective sheet offset.

[0086] Among them, first, two monitoring points are arranged on the left and right walls of the monitoring section, namely point A and point C as shown in Figure 4. Point A is a hypothetical point symmetrical to point A. Due to human reasons, monitoring point A and monitoring point C are not arranged symmetrically. The position of point C is offset to the upper left of the cave wall relative to point A. The position relationship between point A and point C is shown in Figure 4.

[0087] Before the monitoring section, find a location with good visibility and convenient operation to set up the total station, and record the location of the total station as location D. First, use the side measurement function of the total station, take the location of monitoring point A as the starting position, aim the total station at monitoring point A, rotate the total station until the total station aims at monitoring point C, and record the data measured by the total station, which are the slant distances LDA and LDC between the total station location D and monitoring points A and C; the height difference h between point C and point A. Use the angle measurement function of the total station to aim at monitoring point A, adjust the horizontal dial reading to 0 at point A, rotate the total station to aim at monitoring point C, and measure the horizontal angle between point A and point C, recorded as ∠α. Finally, use the distance measurement function of the total station, aim the total station at monitoring point C, and measure the vertical distance H between monitoring point C and the total station location point D.

[0088] After the total station measurement is completed, the data collected by the total station is read and the data is converted using mathematical methods to obtain the convergence value L of the hole displacement around the monitoring section. AC .

[0089] As an embodiment, the data collected by the total station is read and the data is converted using mathematical methods to obtain the displacement convergence value L of the monitoring section. AC ; The specific implementation methods are as follows:

[0090] Step 1: bury the first and second reflective sheets on both sides of the tunnel wall, and record the positions of the first reflective sheet and the second reflective sheet as position A and position C respectively.

[0091] Step 2: Set up the total station at a location with good visibility and convenient measurement; record the installation location of the total station as position D.

[0092] Step 3: Rotate the total station to aim at point A, use point A as the starting position, and then rotate the total station to aim at the second reflector;

[0093] Step 4: Obtain the slope distance L between the total station position point and the reflector through the total station's side measurement function and angle measurement function DA , L DC ; The height difference h and horizontal angle ∠α between the two reflectors.

[0094] Step 5: Turn the total station to aim at point C, and use the distance measurement function of the total station to obtain the vertical distance H between point C and the total station's position point.

[0095] Step 6: When the total station measurement is completed, read the collected data and use the following method to obtain the convergence value L of the hole displacement corresponding to the monitoring section: AC .

[0096] As an embodiment, by determining the direction of the reflective sheet offset, the method for calculating the displacement convergence value around the cross-section hole includes two situations, namely, the offset point is offset upward relative to the symmetrical point of the first reflective sheet position point and the offset point is offset downward relative to the symmetrical point of the first reflective sheet position point.

[0097] Among them, the first case is: when the offset point is offset upward relative to the symmetrical point of the first reflective sheet position point, the upward offset includes an upward offset, an upper left offset and an upper right offset. At this time, the height difference between the two reflective sheets is greater than 0.

[0098] That is, the offset point C is symmetrical to point A and is offset upward (directly above, upper left, upper right), such as Figure 2 As shown in (a), (b), and (c), at this time h>0;

[0099] The second situation is: when the offset point is offset downward relative to the symmetrical point of the first reflective sheet position point, the downward offset includes a straight downward offset, a lower left offset and a lower right offset. At this time, the height difference between the two reflective sheets is less than 0.

[0100] That is, the offset point C is offset downward (directly below, to the lower left, or to the lower right) relative to the symmetrical point A of point A. Figure 2 In (d)(e)(f), h<0 at this time.

[0101] Example 3

[0102] An embodiment of the present disclosure provides a terminal device, including a processor and a computer-readable storage medium, the processor is used to implement various instructions; the computer-readable storage medium is used to store multiple instructions, and the instructions are suitable for being loaded and executed by the processor. A method for measuring tunnel circumference deformation without a reference.

[0103] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, 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 generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1A device that provides the functions specified in a block or multiple blocks.

[0104] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0105] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A method for measuring tunnel perimeter deformation without a reference, characterized in that: include: Set up the total station and bury the first and second reflectors on both sides of the tunnel wall, and record the installation positions of the first and second reflectors and the total station; Rotate the total station to aim at the first reflector, take the position of the first reflector as the starting position, and then rotate the total station to aim at the second reflector; Obtain the slant distance between the total station position point and the two reflectors, the height difference between the two reflectors, and the horizontal angle, rotate the total station and aim at the second reflector again, and obtain the vertical distance between the second reflector and the total station position point; After the above measurement is completed, the data collected by the total station is read, the data is converted, and the displacement convergence value of the section hole is calculated by judging the direction of the reflective sheet offset; By determining the direction of the reflector offset, the method for calculating the convergence value of the displacement around the cross-section hole includes two methods, namely, the offset point is offset upward relative to the symmetrical point of the first reflector position point and the offset point is offset downward relative to the symmetrical point of the first reflector position point; The method of reading the data collected by the total station and converting the data is to use a mathematical method to calculate the convergence value of the hole circumference displacement using the Pythagorean theorem and the trigonometric cosine theorem; The edge angle measurement mode is used to calculate the displacement convergence value around the tunnel.

2. A method for measuring tunnel perimeter deformation without a reference as claimed in claim 1, characterized in that: When the offset point is offset upward relative to the symmetrical point of the first reflective sheet position point, the upward offset includes an upward offset, an upper left offset and an upper right offset. At this time, the height difference between the two reflective sheets is greater than 0.

3. The method for measuring tunnel perimeter deformation without reference according to claim 1, characterized in that: When the offset point is offset downward relative to the symmetrical point of the first reflective sheet position point, the downward offset includes a straight downward offset, a lower left offset and a lower right offset. At this time, the height difference between the two reflective sheets is less than 0.

4. A reference-free measurement integrated system for tunnel perimeter deformation, characterized in that: include: A data acquisition module is used to set up a total station and bury the first and second reflective sheets on both sides of the tunnel wall, and record the installation positions of the first and second reflective sheets and the total station; Rotate the total station to aim at the first reflector, take the position of the first reflector as the starting position, and then rotate the total station to aim at the second reflector; Obtain the slant distance between the total station position point and the two reflectors, the height difference between the two reflectors, and the horizontal angle, rotate the total station and aim at the second reflector again, and obtain the vertical distance between the second reflector and the total station position point; The displacement calculation module is used to read the data collected by the total station, transform the data, and calculate the displacement convergence value around the cross-section hole by judging the direction of the reflective sheet offset; By determining the direction of the reflector offset, the method for calculating the convergence value of the displacement around the cross-section hole includes two methods, namely, the offset point is offset upward relative to the symmetrical point of the first reflector position point and the offset point is offset downward relative to the symmetrical point of the first reflector position point; The method of reading the data collected by the total station and converting the data is to use a mathematical method to calculate the convergence value of the hole circumference displacement using the Pythagorean theorem and the trigonometric cosine theorem; The edge angle measurement mode is used to calculate the displacement convergence value around the tunnel.

5. The reference-free measurement integrated system for tunnel perimeter deformation according to claim 4, characterized in that: By determining the direction of the reflector offset, there are two methods for calculating the displacement convergence value around the cross-section hole, namely, an upward offset of the offset point relative to the symmetrical point of the first reflector position point and a downward offset of the offset point relative to the symmetrical point of the first reflector position point.

6. The reference-free measurement integrated system for tunnel perimeter deformation according to claim 5, characterized in that: When the offset point is offset downward relative to the symmetrical point of the first reflective sheet position point, the downward offset includes a straight downward offset, a lower left offset and a lower right offset. At this time, the height difference between the two reflective sheets is less than 0.

7. The reference-free measurement integrated system for tunnel perimeter deformation according to claim 5, characterized in that: When the offset point is offset upward relative to the symmetrical point of the first reflective sheet position point, the upward offset includes an upward offset, an upper left offset and an upper right offset. At this time, the height difference between the two reflective sheets is greater than 0.

8. A terminal device, characterized in that: It includes a processor and a computer-readable storage medium, the processor is used to implement various instructions; the computer-readable storage medium is used to store multiple instructions, and the instructions are suitable for being loaded and executed by the processor to provide a method for measuring tunnel circumference deformation without a reference as described in any one of claims 1 to 3.

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