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Shield segment attitude measurement method based on three-dimensional laser scanning technology

A technology of three-dimensional laser and scanning technology, which is applied in the field of attitude measurement of shield tunnel segments based on three-dimensional laser scanning technology, can solve the problems of low efficiency, great influence of manual operation, affecting the accuracy of attitude measurement of shield tunnel segments, etc. Operation efficiency, reducing the effect of data operation

Inactive Publication Date: 2021-01-01
CHINA STATE CONSTR HARBOR CONSTR
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Problems solved by technology

[0004] Using the level ruler method to measure the shield segment needs to use the total station to set up the station and the fulcrum, and then place the level ruler on the segment ring by ring to measure, the operation time is long and the efficiency is low; Fine, greatly affected by manual operation, affecting the accuracy of attitude measurement of shield segments

Method used

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  • Shield segment attitude measurement method based on three-dimensional laser scanning technology
  • Shield segment attitude measurement method based on three-dimensional laser scanning technology
  • Shield segment attitude measurement method based on three-dimensional laser scanning technology

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Embodiment

[0047] A method for measuring the attitude of shield segment 1 based on three-dimensional laser scanning technology, referring to figure 2 , including the following steps: step S1, measuring point setting; step S2, reflecting sheet 4 setting; step S3, data collection; step S4, point cloud splicing; step S5, coordinate transformation; step S6, attitude deviation value calculation.

[0048] Step S1, measuring point setting. refer to image 3 with Figure 4 , set measuring points along the length of the tunnel, and determine the coordinates of the measuring points. The measuring points are set on the vertical plane where the axis of the shield segment 1 is located. In the figure, A is the axial direction of the shield segment 1, and B is the radial direction of the shield segment 1. The number of measuring points M=L / N, where L is the length of the area to be measured, and N is the interval of measuring points. When setting the measuring points of the three-dimensional laser...

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Abstract

The invention discloses a shield segment attitude measurement method based on a three-dimensional laser scanning technology, and belongs to the technical field of shield segment attitude measurement methods. The method comprises the following steps: S1, setting measurement points; S2, arranging a reflector plate; S3, collecting data; S4, carrying out coordinate transformation; S5, carrying out point cloud splicing; and S6, calculating an attitude deviation value; Aiming at the characteristics of a shield segment, the three-dimensional laser scanning technology is adopted, and the attitude of the shield segment can be efficiently and accurately measured.

Description

technical field [0001] The invention relates to the technical field of attitude measurement methods for shield tunneling segments, in particular to a method for measuring the attitude of shield tunneling segments based on three-dimensional laser scanning technology. Background technique [0002] With the increasing shortage of land resources, the 21st century will usher in the climax of the development and utilization of underground space. The shield method has been widely used in the construction of urban tunnels. Through shield excavation, tunnel segments are installed, and then fixed by grouting to complete the tunnel construction work. During the construction of a shield tunnel, a key issue is whether the tunnel meets the design limit requirements. Therefore, it is very important to measure the posture of the formed segment. It directly reflects the deviation between the centerline of the tunnel and the design after the tunnel is formed, and is also a guideline System c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00G06T7/60
CPCG01C15/00G06T7/60G06T2207/10028
Inventor 李哲梁帅卢磊
Owner CHINA STATE CONSTR HARBOR CONSTR
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