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Fine adjustment measurement method, system and equipment for box culvert in tunnel and storage medium

A measurement method and technology in the tunnel, which is applied in image analysis, image enhancement, instruments, etc., can solve the problem that the box culvert installation accuracy cannot be considered as a whole and the overall planning of the box culvert installation position and posture, so as to improve accuracy, improve accuracy and efficiency Effect

Pending Publication Date: 2022-04-22
力信测量(上海)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem in the prior art that only the installation accuracy of a single box culvert can be checked and whether the installation positions and postures of all box culverts in the tunnel conform to the overall plan cannot be considered as a whole, the present invention provides a fine-tuning measurement method for box culverts in a tunnel , system, equipment and storage media, the specific technical solutions are as follows:

Method used

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  • Fine adjustment measurement method, system and equipment for box culvert in tunnel and storage medium
  • Fine adjustment measurement method, system and equipment for box culvert in tunnel and storage medium
  • Fine adjustment measurement method, system and equipment for box culvert in tunnel and storage medium

Examples

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Effect test

Embodiment 1

[0071] An embodiment of the present invention, such as figure 1 As shown, the present invention provides a fine-tuning measurement method for box culverts in tunnels, including several box culverts to be checked installed in the tunnel, including steps:

[0072] S100 obtains the preset centerline of the tunnel extension direction and the design radius of the tunnel.

[0073] Specifically, the design centerline at the time of tunnel design and the historical centerline measured before are acquired.

[0074] S200 acquires several measurement points on each preset cross-section in the tunnel.

[0075] Specifically, the preset cross-section refers to taking a tunnel cross-section at every preset distance in the tunnel as the preset cross-section, and the preset distance can be 5 cm, 10 cm, 20 cm and so on. Several measuring points can be acquired on the circular edge of each preset cross-section by means of a scanning mechanism.

[0076] S300 Calculate a first distance between ...

Embodiment 2

[0091] Based on Example 1, such as figure 2 As shown, the present invention also provides a fine-tuning measurement method for box culverts in tunnels. Step S500 calculates the center of each preset cross-section according to the remaining several measurement points, which is based on the remaining several measurement points through the weighted least squares method. Calculates the center of each preset cross section.

[0092] Specifically include steps: S510 introduce a weight function.

[0093] Specifically, the weight function is used to define the weight of several measurement points.

[0094] Exemplarily, the Tukey weight function is introduced, and the specific function is as follows:

[0095]

[0096] Where γ is a clipping function, which defines which measurement points are outlier measurement points.

[0097] S520 , according to the weights of the remaining measurement points, perform a predetermined number of iterative calculations by the least square method t...

Embodiment 3

[0107] Based on any one of embodiments 1 to 2, such as image 3 As shown, the present invention also provides a fine-tuning measurement method for box culverts in tunnels. Step S600 generates actual centerlines according to the centers of several preset cross-sections, specifically including:

[0108] S610 Calculate a second distance between the centers of the several preset cross-sections and the preset centerline.

[0109]S620 Calculate standard deviations of a plurality of second distances, excluding circle centers of preset cross sections whose second distance is greater than a preset multiple standard deviation.

[0110] Exemplarily, the preset multiple may be double, triple or quadruple, and so on. Usually, the center of the circle when the distance is judged to be greater than three times the standard deviation is the error amount, and the error amount should be eliminated when the center line is obtained according to the center of the circle before calculation.

[01...

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Abstract

The invention discloses a fine adjustment measurement method, system and device for box culverts in a tunnel and a storage medium, and the method comprises a plurality of to-be-verified box culverts installed in the tunnel, and also comprises the steps: obtaining a preset center line in the extension direction of the tunnel and the design radius of the tunnel; acquiring a plurality of measurement points on each preset cross section in the tunnel; calculating a first distance between the plurality of measuring points and a preset center line; eliminating the measurement points of which the difference between the first distance and the design radius is greater than a preset threshold value; calculating the circle center of each preset cross section according to the plurality of remaining measurement points; generating an actual center line according to the circle centers of the plurality of preset cross sections; generating position coordinates and postures of the to-be-verified box culverts according to the actual center lines; and verifying the installation information of each box culvert to be verified according to the position coordinate of each box culvert to be verified and the corresponding attitude. The actual center line of the tunnel can be generated, and the accuracy and efficiency of position information verification of the box culvert in the tunnel are improved.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a fine-tuning measurement method, system, equipment and storage medium for box culverts in tunnels. Background technique [0002] With the development of science and technology, Tunnel Boring Machine (TBM, also known as shield machine) has been greatly developed, and is widely used in urban subway construction, coal mine roadway excavation and other construction fields. The use of large-scale tunnel boring machines for single-hole double-track large-diameter tunnel construction is a new engineering construction technology. Compared with other traditional mechanical equipment, it has the advantages of high degree of automation, labor saving, high construction quality and fast construction speed. Generally, when the tunnel axis is long and the diameter is large, it is more economical and reasonable to use tunnel boring machines for excavation. Especially when facing und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/70G06T5/00
CPCG06T7/0004G06T7/70G06T2207/30164G06T2207/30172G06T5/70
Inventor 张晓日
Owner 力信测量(上海)有限公司
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