Method and device for measuring settlement of operating rail transit tunnel structure

Abstract

The invention belongs to the technical field of settlement monitoring, and provides an operation rail transit tunnel structure settlement measurement method and device. According to the invention, the settlement panoramic image is obtained through the mobile vehicle-mounted platform and the line-scan digital camera, and the conversion coefficient between the image space coordinate system and the object space coordinate system is determined through the conversion between the pixels in the settlement panoramic image and the actual length. The actual height difference between the deformation point identifier 1 and the deformation point identifier n in the settlement monitoring area is calculated through the conversion coefficient, and finally the settlement amount of the operation rail transit tunnel structure is determined through the difference value of the actual height difference between the deformation point identifier 1 and the deformation point identifier n in the settlement monitoring area in the two monitoring time periods. According to the invention, high-precision settlement monitoring of the rail tunnel structure is realized, the automation degree is high, the measurement precision is high, the deployment is convenient, and the method has great significance in improving the operation efficiency of the rail traffic underground structure and guaranteeing the life and property safety of people.

Description

Technical Field

[0001] The present invention relates to the technical field of settlement monitoring, and in particular to a method and device for measuring the settlement of an operating rail transit tunnel structure. Background Art

[0002] With the development and construction of cities, the operating mileage of urban rail transit is getting longer and longer. The operational safety of rail transit structures is a major issue. Tunnel structure settlement is a must-measure item stipulated by regulations. At present, the widely used methods include manual precision leveling and automated static leveling sensor measurement.

[0003] Manual precision leveling is a method of measuring point by point using an optical or electronic level. Advantages: high accuracy, maturity, reliable and stable results. Disadvantages: low production efficiency, long time to obtain monitoring data, requiring a lot of manpower, poor real-time performance, data lag, incomplete data, and using a single point to represent the settlement of the area.

[0004] Automated static level sensor monitoring is a method of using a static level to place sensors in some areas of the tunnel structure or roadbed, and indirectly obtain the settlement of the tunnel structure or roadbed through the liquid pressure difference point by point. Advantages: high monitoring frequency, high accuracy, maturity, and reliable results. Disadvantages: small monitoring range, greatly affected by the tunnel slope, and the data cannot reflect the overall settlement and deformation of the tunnel over a long distance.

[0005] Therefore, there is an urgent need to develop an efficient and high-precision monitoring technology and method for obtaining the settlement of operating rail transit tunnel structures and roadbeds. Summary of the invention

[0006] In view of the defects in the prior art, the present invention provides a method and device for measuring the settlement of an operating rail transit tunnel structure, so as to improve the settlement measurement accuracy and automation level of the rail tunnel structure.

[0007] A method for measuring structural settlement of an operating rail transit tunnel, comprising:

[0008] The station area and the settlement monitoring area are photographed on the move to form a settlement panoramic image, wherein the station area includes a reference point mark, the settlement monitoring area includes a deformation point mark, the reference point mark includes a reference point mark A and a reference point mark B, the deformation point mark includes a deformation point mark 1 to a deformation point mark n, and both the reference point mark and the deformation point mark are directional reflective marks;

[0009] Determine a conversion coefficient between an image space coordinate system and an object space coordinate system according to an image height difference between a reference point marker A and a reference point marker B in a subsidence panoramic image and a measured actual height difference between the reference point marker A and the reference point marker B;

[0010] The actual height difference between deformation point mark 1 to deformation point mark n in the settlement monitoring area is calculated based on the sum of the image height differences between the reference point mark A and the deformation point mark 1 to deformation point mark n in the settlement panoramic image and the conversion coefficient between the image coordinate system and the object coordinate system;

[0011] According to the actual height difference between deformation point marker 1 and deformation point marker n in the settlement monitoring area, the settlement of the operating rail transit tunnel structure is calculated.

[0012] Furthermore, the station area and the settlement monitoring area are photographed on the move to form a panoramic image of the settlement, including:

[0013] A mobile vehicle-mounted platform is used to drive a linear array camera to take mobile photos of the station area and subsidence monitoring area along the track line, forming a panoramic image of the subsidence.

[0014] Furthermore, the reference point identification includes an image positioning area and an image marking area.

[0015] Furthermore, the sum of the image height differences between the reference point mark A and the deformation point marks 1 to n in the settlement panoramic image is calculated using the method shown in the following formula:

[0016]

[0017] Among them, VH h represents the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image, i represents the deformation point mark i, n represents the deformation point mark n, h i It indicates the image height difference between deformation point marker i and deformation point marker i-1, or it indicates the image height difference between deformation point marker 1 and reference point marker A.

[0018] Furthermore, it also includes:

[0019] An indirect adjustment method is used to perform weighted correction on the image height difference between deformation point marker i and deformation point marker i-1, or the image height difference between deformation point marker 1 and benchmark point marker A, based on the actual height difference measured between benchmark point marker A and benchmark point marker B, to obtain the corrected image height difference between deformation point marker i and deformation point marker i-1, or the corrected image height difference between deformation point marker 1 and benchmark point marker A.

[0020] A device for measuring the settlement of a tunnel structure in an operating rail transit system comprises a camera module, a determination module, a first calculation module and a second calculation module, wherein:

[0021] A camera module is used for performing mobile shooting of the station area and the settlement monitoring area to form a settlement panoramic image, wherein the station area includes a reference point mark, the settlement monitoring area includes a deformation point mark, the reference point mark includes a reference point mark A and a reference point mark B, the deformation point mark includes a deformation point mark 1 to a deformation point mark n, and both the reference point mark and the deformation point mark are directional reflective marks;

[0022] A determination module, for determining a conversion coefficient between an image space coordinate system and an object space coordinate system according to an image height difference between a reference point marker A and a reference point marker B in a subsidence panoramic image and a measured actual height difference between the reference point marker A and the reference point marker B;

[0023] The first calculation module is used to calculate the actual height difference between the deformation point mark 1 to the deformation point mark n in the settlement monitoring area according to the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image and the conversion coefficient between the image space coordinate system and the object space coordinate system;

[0024] The second calculation module is used to calculate the settlement of the operating rail transit tunnel structure according to the actual height difference between the deformation point mark 1 to the deformation point mark n in the settlement monitoring area.

[0025] Furthermore, the camera module includes a linear array camera and a mobile vehicle-mounted platform, which is used to use the mobile vehicle-mounted platform to drive the linear array camera to perform mobile shooting of the station area and the settlement monitoring area along the track line to form a panoramic image of the settlement.

[0026] Furthermore, the reference point identification includes an image positioning area and an image ruler area, wherein:

[0027] An image positioning area, used to determine the position of the reference point markers in the subsidence panoramic image;

[0028] Image ruler area, used to convert pixel length in the sedimentation panoramic image into actual length.

[0029] Furthermore, the first calculation module includes a first calculation unit,

[0030] The first calculation subunit is used to calculate the sum of the image height differences between the reference point mark A and the deformation point marks 1 to the deformation point marks n in the settlement panoramic image by using the method shown in the following formula:

[0031]

[0032] Among them, VH h represents the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image, i represents the deformation point mark i, n represents the deformation point mark n, h iIt indicates the image height difference between deformation point marker i and deformation point marker i-1, or it indicates the image height difference between deformation point marker 1 and reference point marker A.

[0033] Furthermore, the first calculation unit includes a correction subunit,

[0034] The correction subunit is used to use an indirect adjustment method to perform weighted correction on the image height difference between the deformation point mark i and the deformation point mark i-1, or the image height difference between the deformation point mark 1 and the reference point mark A, based on the actual height difference measured between the reference point mark A and the reference point mark B, to obtain the corrected image height difference between the deformation point mark i and the deformation point mark i-1, or the corrected image height difference between the deformation point mark 1 and the reference point mark A. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention, the following will briefly introduce the drawings required for the specific embodiments or the prior art description. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0036] Figure 1 A flow chart of a method for measuring structural settlement of an operating rail transit tunnel provided by an embodiment of the present invention;

[0037] Figure 2 A method for measuring the structural settlement of an operating rail transit tunnel provided by an embodiment of the present invention

[0038] Figure 3 A schematic diagram of a photographic structure of a method for measuring structural settlement of an operating rail transit tunnel provided by an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of the layout of cross-section reference points in a station area of ​​a method for measuring structural settlement of an operating rail transit tunnel provided by an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of layout of deformation point markings in a settlement monitoring area of ​​a method for measuring settlement of a structure of an operating rail transit tunnel provided by an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of a directional reflective marking structure for a method for measuring structural settlement of an operating rail transit tunnel provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0043] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0044] In one embodiment, if Figure 1 As shown, a method for measuring the settlement of an operating rail transit tunnel structure comprises:

[0045] 1. Mobile shooting is performed on the station area and the settlement monitoring area to form a settlement panoramic image, wherein the station area includes a reference point mark, the settlement monitoring area includes a deformation point mark, the reference point mark includes a reference point mark A and a reference point mark B, the deformation point mark includes deformation point mark 1 to deformation point mark n, and both the reference point mark and the deformation point mark are directional reflective marks;

[0046] like Figure 2-5 As shown, the station area includes a reference point mark, the settlement monitoring area includes a deformation point mark, the reference point mark includes a reference point mark A and a reference point mark B, including deformation point marks 1 to deformation point marks n, and the reference point marks and the deformation point marks are both directional reflective marks;

[0047] In this embodiment, optionally, the station area and the settlement monitoring area are photographed by mobile shooting to form a settlement panoramic image, including:

[0048] A mobile vehicle-mounted platform is used to drive a linear array camera to take mobile photos of the station area and subsidence monitoring area along the track line, forming a panoramic image of the subsidence.

[0049] Linear array cameras are used to photograph the station area and the settlement monitoring area;

[0050] The mobile vehicle-mounted platform is used to drive the linear array camera to move and shoot the station area and the settlement monitoring area along the track line to form a panoramic image of the settlement.

[0051] Specifically, the mobile vehicle-mounted platform can be hand-pushed or self-powered.

[0052] Benchmark mark markers are arranged in the area structure of two adjacent stations to stabilize the position, and the benchmark mark markers include benchmark mark marker A and benchmark mark marker B. n deformation point markers are arranged in the settlement monitoring area of ​​the interval tunnel, including deformation point marker 1 to deformation point marker n.

[0053] In this embodiment, optionally, Figure 6As shown, the reference point mark is a 8cm*11cm black and white rectangular directional reflective mark. The 8cm*8cm square area is the image positioning area, and the 8cm*3cm image scale area is a scale scale with a scale of 1:1 to the actual scale. For example, the actual length is 10mm, which represents m pixels in the image space.

[0054] Specifically, the reference point identification includes an image positioning area and an image ruler area, wherein:

[0055] An image positioning area, used to determine the position of the reference point markers in the subsidence panoramic image;

[0056] Image ruler area, used to convert pixel length in the sedimentation panoramic image into actual length.

[0057] As the rail vehicle platform moves at a constant speed, the linear array camera will dynamically collect a panoramic image of the tunnel structure (including the station area and the settlement monitoring area). The image contains the reference point mark An and the deformation point mark - the reference point mark B, forming an undistorted panoramic orthophoto from the reference point mark A to the reference point mark B, that is, the settlement panoramic image.

[0058] Specifically, the layout spacing of the deformation point markers is determined according to relevant specifications and can be flexibly adjusted. The fixed speed of the mobile vehicle platform carrying the linear array camera can be determined according to the imaging requirements and monitoring accuracy requirements.

[0059] In this embodiment, optionally, the sedimentation panoramic image is a binary image or a true color image.

[0060] 2. Determine the conversion coefficient between the image space coordinate system and the object space coordinate system according to the image height difference between the reference point mark A and the reference point mark B in the subsidence panoramic image and the measured actual height difference between the reference point mark A and the reference point mark B;

[0061] Establish the image space coordinate system and the object space coordinate system, and use the reference point A as the coordinate origin of the image space coordinate system and the object space coordinate system, such as Figure 2 As shown, the scanning direction of the linear array camera is taken as the X-axis of the coordinate system, and the direction that is orthogonal to the X-axis and conforms to the right-hand rule is taken as the Y-axis to establish the image space coordinate system and the object space coordinate system.

[0062] The image height difference VH between the reference point marker A and the reference point marker B is obtained by directly measuring on the settlement panoramic image. t ,Specifically, the image height difference is determined based on the pixels of the ,sedimentation panoramic image.

[0063] For example, the actual length is 10 mm, which represents m pixels in the image space, that is, the height difference of 1 pixel is

[0064] Then, the actual height difference VH between the reference point mark A and the reference point mark B is obtained through at least 2 field measurements. s , determine the conversion coefficient k between the image space coordinate system and the object space coordinate system.

[0065] 3. According to the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image, and the conversion coefficient between the image coordinate system and the object coordinate system, the actual height difference between the deformation point mark 1 to the deformation point mark n in the settlement monitoring area is calculated;

[0066] Optionally, the sum of the image height differences between the reference point marker A and the deformation point markers 1 to n in the settlement panoramic image is calculated using the method shown in the following formula:

[0067]

[0068] Among them, VH h represents the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image, i represents the deformation point mark i, n represents the deformation point mark n, h i It indicates the image height difference between deformation point marker i and deformation point marker i-1, or it indicates the image height difference between deformation point marker 1 and reference point marker A.

[0069] Optionally, the actual height difference between deformation point mark 1 to deformation point mark n in the settlement monitoring area is calculated according to the sum of the image height differences between the reference point mark A and the deformation point mark 1 to deformation point mark n in the settlement panoramic image and the conversion coefficient between the image space coordinate system and the object space coordinate system using the method shown in the following formula:

[0070] VH j = k × VH h

[0071] Among them, VH j Indicates the actual height difference between deformation point mark 1 and deformation point mark n in the settlement monitoring area, VH h represents the sum of the image height differences between the reference point marker A and the deformation point markers 1 to n in the subsidence panoramic image, and k represents the conversion coefficient between the image coordinate system and the object coordinate system.

[0072] In this embodiment, optionally, it further includes:

[0073] An indirect adjustment method is used to perform weighted correction on the image height difference between deformation point marker i and deformation point marker i-1, or the image height difference between deformation point marker 1 and benchmark point marker A, based on the actual height difference measured between benchmark point marker A and benchmark point marker B, to obtain the corrected image height difference between deformation point marker i and deformation point marker i-1, or the corrected image height difference between deformation point marker 1 and benchmark point marker A.

[0074] Specifically, the method shown in the following formula (i.e., the indirect adjustment method) is used to perform weighted correction on the image height difference between the deformation point mark i and the deformation point mark i-1, or the image height difference between the deformation point mark 1 and the reference point mark A, to obtain the corrected image height difference between the deformation point mark i and the deformation point mark i-1, or the corrected image height difference between the deformation point mark 1 and the reference point mark A:

[0075]

[0076] h' i =h i +v i

[0077] Among them, h' i represents the image height difference between the corrected deformation point marker i and the deformation point marker i-1, or the image height difference between the corrected deformation point marker 1 and the reference point marker A, h i represents the image height difference between deformation point marker i and deformation point marker i-1, or represents the image height difference between deformation point marker 1 and reference point marker A, v i Indicates the image height difference correction amount, VH s Indicates the actual height difference VH between reference point marker A and reference point marker B s , VH h It represents the sum of the image height differences between the reference point marker A and the deformation point markers 1 to n in the settlement panoramic image.

[0078] 4. Based on the actual height difference between deformation point marker 1 and deformation point marker n in the settlement monitoring area, the settlement of the operating rail transit tunnel structure is calculated.

[0079] Specifically, the settlement of the operating rail transit tunnel structure is calculated based on the actual height difference between deformation point mark 1 and deformation point mark n in the settlement monitoring area using the method shown in the following formula:

[0080] VH=VH j -VH jj

[0081] Among them, VH represents the settlement of the operating rail transit tunnel structure during the two monitoring periods, VH jIndicates the actual height difference between deformation point mark 1 and deformation point mark n in the settlement monitoring area, VH jj It represents the actual height difference between deformation point marker 1 and deformation point marker n in the settlement monitoring area during the jth measurement.

[0082] In one embodiment, a device for measuring the settlement of a tunnel structure in operation is provided, comprising a camera module, a determination module, a first calculation module and a second calculation module, wherein:

[0083] A camera module is used for performing mobile shooting of the station area and the settlement monitoring area to form a settlement panoramic image, wherein the station area includes a reference point mark, the settlement monitoring area includes a deformation point mark, the reference point mark includes a reference point mark A and a reference point mark B, the deformation point mark includes a deformation point mark 1 to a deformation point mark n, and both the reference point mark and the deformation point mark are directional reflective marks;

[0084] The camera module includes a linear array camera and a mobile vehicle-mounted platform, which is used to use the mobile vehicle-mounted platform to drive the linear array camera to carry out mobile shooting of the station area and the settlement monitoring area along the track line to form a panoramic image of the settlement.

[0085] The reference point identification includes the image positioning area and the image marking area, where:

[0086] An image positioning area, used to determine the position of the reference point markers in the subsidence panoramic image;

[0087] Image ruler area, used to convert pixel length in the sedimentation panoramic image into actual length.

[0088] A determination module, for determining a conversion coefficient between an image space coordinate system and an object space coordinate system according to an image height difference between a reference point marker A and a reference point marker B in a subsidence panoramic image and a measured actual height difference between the reference point marker A and the reference point marker B;

[0089] The first calculation module is used to calculate the actual height difference between the deformation point mark 1 to the deformation point mark n in the settlement monitoring area according to the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image and the conversion coefficient between the image space coordinate system and the object space coordinate system;

[0090] The first calculation module includes a first calculation unit,

[0091] The first calculation subunit is used to calculate the sum of the image height differences between the reference point mark A and the deformation point marks 1 to the deformation point marks n in the settlement panoramic image by using the method shown in the following formula:

[0092]

[0093] Among them, VH h represents the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image, i represents the deformation point mark i, n represents the deformation point mark n, h i It indicates the image height difference between deformation point marker i and deformation point marker i-1, or it indicates the image height difference between deformation point marker 1 and reference point marker A.

[0094] The first calculation unit includes a correction subunit,

[0095] The correction subunit is used to use an indirect adjustment method to perform weighted correction on the image height difference between the deformation point mark i and the deformation point mark i-1, or the image height difference between the deformation point mark 1 and the reference point mark A, based on the actual height difference measured between the reference point mark A and the reference point mark B, to obtain the corrected image height difference between the deformation point mark i and the deformation point mark i-1, or the corrected image height difference between the deformation point mark 1 and the reference point mark A.

[0096] The second calculation module is used to calculate the settlement of the operating rail transit tunnel structure according to the actual height difference between the deformation point mark 1 to the deformation point mark n in the settlement monitoring area.

[0097] The improvement of the method and device for measuring the settlement of operating rail transit tunnel structure proposed by the present invention is that a linear array camera based on a mobile vehicle platform is used to obtain high-definition images without distortion in the Y-axis direction, and no splicing is required to avoid the influence of the splicing accuracy of the area array camera image. A further improvement is the use of a directional reflection mark, which is characterized by a black and white aluminum alloy material. The mark can effectively improve the recognition accuracy and reliability of the monitoring point mark of the data processing module.

[0098] The present invention uses a mobile vehicle-mounted platform equipped with a linear array camera to photograph the deformation point markings of the rail tunnel structure, and uses special directional reflective targets as marker points for layout, so as to capture high-contrast quasi-binary or true color images. Combined with image processing, the image coordinates of the marker points can be quickly and accurately obtained, and image stitching can be achieved based on the image coordinates. At the same time, the settlement of each settlement monitoring point is calculated in combination with a settlement calculation module.

[0099] The settlement measuring device for operating rail transit tunnel structures provided by the present invention can quickly implement large-scale settlement monitoring of rail tunnels and realize high-precision settlement monitoring of rail tunnel structures. It has a high degree of automation and high measurement accuracy, meets the accuracy requirements of urban rail transit monitoring specifications, is easy to deploy, and is conducive to the promotion of urban rail transit tunnel structure settlement monitoring projects. It is of great significance to improving the operational efficiency of rail transit underground structures and protecting people's lives and property.

[0100] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 invention. 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 in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0102] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A method for measuring the structural settlement of an operating rail transit tunnel, characterized in that: include: Perform mobile shooting of the station area and the settlement monitoring area to form a settlement panoramic image, wherein the station area includes a reference point mark, the settlement monitoring area includes a deformation point mark, the reference point mark includes a reference point mark A and a reference point mark B, the deformation point mark includes a deformation point mark 1 to a deformation point mark n, and the reference point mark and the deformation point mark are both directional reflective marks; Determine a conversion coefficient between an image space coordinate system and an object space coordinate system according to an image height difference between a reference point marker A and a reference point marker B in the subsidence panoramic image and a measured actual height difference between the reference point marker A and the reference point marker B; The actual height difference between the deformation point mark 1 to the deformation point mark n in the settlement monitoring area is calculated according to the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image and the conversion coefficient between the image space coordinate system and the object space coordinate system; The settlement amount of the operating rail transit tunnel structure is calculated based on the actual height difference between the deformation point mark 1 to the deformation point mark n in the settlement monitoring area.

2. A method for measuring structural settlement of an operating rail transit tunnel as claimed in claim 1, characterized in that: The mobile shooting of the station area and the settlement monitoring area to form a panoramic settlement image includes: A mobile vehicle-mounted platform is used to drive a linear array camera to take mobile photos of the station area and subsidence monitoring area along the track line, forming a panoramic image of the subsidence.

3. A method for measuring structural settlement of an operating rail transit tunnel as claimed in claim 1 or 2, characterized in that: The reference point identification includes an image positioning area and an image marking area.

4. A method for measuring structural settlement of an operating rail transit tunnel as claimed in claim 3, characterized in that: The sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image is calculated using the method shown in the following formula: Among them, VH h represents the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image, i represents the deformation point mark i, n represents the deformation point mark n, h i It indicates the image height difference between deformation point marker i and deformation point marker i-1, or it indicates the image height difference between deformation point marker 1 and reference point marker A.

5. A method for measuring structural settlement of an operating rail transit tunnel as claimed in claim 4, characterized in that: Also includes: An indirect adjustment method is adopted to perform weighted correction on the image height difference between the deformation point mark i and the deformation point mark i-1, or the image height difference between the deformation point mark 1 and the benchmark point mark A, according to the actual height difference measured between the benchmark point mark A and the benchmark point mark B, to obtain the corrected image height difference between the deformation point mark i and the deformation point mark i-1, or the corrected image height difference between the deformation point mark 1 and the benchmark point mark A.

6. A structural settlement measurement device for an operating rail transit tunnel, characterized in that: It includes a camera module, a determination module, a first calculation module and a second calculation module, wherein: The camera module is used to perform mobile shooting of the station area and the settlement monitoring area to form a settlement panoramic image, wherein the station area includes a reference point mark, the settlement monitoring area includes a deformation point mark, the reference point mark includes a reference point mark A and a reference point mark B, the deformation point mark includes a deformation point mark 1 to a deformation point mark n, and the reference point mark and the deformation point mark are both directional reflective marks; The determination module is used to determine the conversion coefficient between the image space coordinate system and the object space coordinate system according to the image height difference between the reference point mark A and the reference point mark B in the settlement panoramic image and the measured actual height difference between the reference point mark A and the reference point mark B; The first calculation module is used to calculate the actual height difference between the deformation point mark 1 to the deformation point mark n in the settlement monitoring area according to the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image and the conversion coefficient between the image space coordinate system and the object space coordinate system; The second calculation module is used to calculate the settlement of the operating rail transit tunnel structure according to the actual height difference between the deformation point mark 1 to the deformation point mark n in the settlement monitoring area.

7. The operating rail transit tunnel structure settlement measurement device according to claim 6, characterized in that: The camera module includes a linear array camera and a mobile vehicle-mounted platform, and is used to use the mobile vehicle-mounted platform to drive the linear array camera to perform mobile shooting of the station area and the settlement monitoring area along the track line to form a panoramic settlement image.

8. A structural settlement measurement device for operating rail transit tunnels according to any one of claims 6 or 7, characterized in that: The reference point identification includes an image positioning area and an image ruler area, wherein: The image positioning area is used to determine the position of the reference point mark in the settlement panoramic image; The image ruler area is used to convert the pixel length in the sedimentation panoramic image into an actual length.

9. The operating rail transit tunnel structure settlement measurement device according to claim 8, characterized in that: The first calculation module includes a first calculation unit, The first calculation subunit is used to calculate the sum of the image height differences between the reference point mark A and the deformation point marks 1 to the deformation point marks n in the settlement panoramic image using the method shown in the following formula: Among them, VH h represents the sum of the image height differences between the reference point mark A and the deformation point mark 1 to the deformation point mark n in the settlement panoramic image, i represents the deformation point mark i, n represents the deformation point mark n, h i It indicates the image height difference between deformation point marker i and deformation point marker i-1, or it indicates the image height difference between deformation point marker 1 and reference point marker A.

10. The operating rail transit tunnel structure settlement measurement device according to claim 9, characterized in that: The first calculation unit includes a correction subunit, The correction subunit is used to adopt an indirect adjustment method to perform weighted correction on the image height difference between the deformation point mark i and the deformation point mark i-1, or the image height difference between the deformation point mark 1 and the reference point mark A, according to the actual height difference measured between the reference point mark A and the reference point mark B, to obtain the corrected image height difference between the deformation point mark i and the deformation point mark i-1, or the corrected image height difference between the deformation point mark 1 and the reference point mark A.

Images