★This program has increased the case of horizontal and vertical positioning detection of the tunnel.
4.2.2 Horizontal and vertical positioning of the tunnel (a certain ring road in Zhengzhou, 2011.08)
1) Test summary
On August 3-4, 2018, the technicians of our company carried out the detection of the horizontal and vertical offset of the bellows on the assembled segment beam of a ring road project in Zhengzhou.
The test object is a flat anchor and the test position is the top plate.
2) Lateral offset
With this technique, the tunnel can be positioned horizontally very clearly. The test results show that the position of the tunnel is approximately 2 to 4 mm offset.
Figure 4-2-3 Typical test cloud image
3) Longitudinal offset
With the present technology, the longitudinal positioning of the tunnel can also be better.
Figure 4-2-4 Typical test cloud diagram