Special tunnel lining deformation monitoring method

A deformation monitoring and tunneling technology, applied in measurement devices, instruments, optical devices, etc., can solve problems such as large workload and low efficiency, and achieve the effects of fast acquisition speed, improved work efficiency, and high measurement accuracy

Pending Publication Date: 2017-08-25
SHANGHAI CONSTRUCTION GROUP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of large workload and low efficiency in monitoring the deformation of the special-shaped tunnel lining by the caliper method or the total station method in the prior art, the present invention provides a method for monitoring the deformation of the special-shaped tunnel lining. Measure the section to collect profile data, then establish the inner surface model of the tunnel lining and fit the inner surface model of the entire tunnel lining, and then obtain the position according to the difference of the profile data at the same position of the tunnel inner surface model in different periods The amount of deformation of the tunnel lining

Method used

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Effect test

Embodiment 1

[0036] see figure 1 and figure 2 , the special-shaped tunnel lining 200 deformation monitoring method provided by the present invention includes the following steps:

[0037] S1. Set a fixed point on the wall of the working shaft 300 of the special-shaped tunnel as the measurement reference point 310 . The three-dimensional coordinates of the reference point 310 serve as a reference point for the profile data of the section of the tunnel lining 200 . During tunnel construction, a vertical working shaft 300 will be set, and the deformation of the shaft wall of the working shaft 300 is generally small and negligible. Therefore, the reference point 310 can be set on the shaft wall of the working shaft 300 .

[0038] S2. Place the three-dimensional scanner measurement device 100 near the measurement section 210, use the support legs of the measurement device 100 to perform preliminary leveling, and rotate the lower support rod of the support legs, and use the horizontal bubble ...

Embodiment 2

[0045] refer to image 3 and Figure 4 , the present invention also provides a three-dimensional scanning measurement device 100 suitable for monitoring deformation of special-shaped tunnel lining, including a three-dimensional scanner 110 , a measurement chassis 120 and support legs 130 . Wherein, the three-dimensional scanner 110 is fixedly connected with the measurement chassis 120 by connecting bolts 111. As an example, the measurement chassis 120 is a steel plate with a length, width and thickness of 30cm×30cm×0.5cm respectively, and a hole is left in the center of the measurement chassis 120, and the diameter ratio of the hole is The outer diameter of the connecting bolt 111 of the three-dimensional scanner 110 is 1-2 cm larger. The measurement chassis 120 is provided with a horizontal bubble observation tube 121 for judging whether the measurement chassis 120 is level.

[0046] The supporting leg 130 is hinged to the measuring chassis 120 , here is a one-way hinge, an...

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Abstract

The invention relates to a special tunnel lining deformation monitoring method, which belongs to the technical field of tunnel construction safety monitoring. According to the monitoring method, a three-dimensional scanner is used to carry out contour data acquisition on a measurement section of the tunnel lining, an inner surface model of the tunnel lining is built, the inner surface model of the whole tunnel lining is fit, and according to the contour data difference at the same position of the tunnel inner surface model during different time periods, the deformation of the tunnel lining at the position is obtained. The special tunnel lining deformation monitoring method provided by the invention has the advantages that the measurement precision is higher; the measurement speed is quicker; and as the later data processing is completed by computer software, the working efficiency can be greatly improved.

Description

technical field [0001] The invention relates to a deformation monitoring method for a special-shaped tunnel lining, belonging to the technical field of tunnel construction safety monitoring. Background technique [0002] In tunnel engineering, in order to prevent deformation or collapse of the surrounding rock, it is necessary to build a lining in the tunnel body. The so-called lining is simply the support structure set on the inner side of the surrounding rock. During construction, it is necessary to monitor the deformation of the tunnel lining. [0003] Traditional tunnel lining monitoring methods mainly include caliper method and total station analysis method. The caliper method is suitable for circular tunnels, using the symmetry of the circle to measure at a specified section. On the selected measurement section, first measure the height difference between the top and bottom of the tunnel lining, and then select an even number of Measuring points, measure the horizon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 程子聪王新新张阿晋
Owner SHANGHAI CONSTRUCTION GROUP
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