Measurement method for excavation of special-shaped tunnel
A measurement method and technology for tunnel excavation, which are applied to measurement devices, instruments, optical devices, etc., can solve the problems of large errors in tunnel attitude and axis measurement, inability to accurately calculate the excavation volume of each ring of shields, etc., and meet manual requirements. The effect of low and high monitoring accuracy
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[0042] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0043] Such as figure 1 As shown, the present invention provides a kind of special-shaped tunnel excavation measurement method, comprising:
[0044] Set three fixed points as reference points 2 on the shaft wall of the shield working shaft 1 connected to the special-shaped tunnel; here, three fixed points are selected as reference points, and the following can be accurately calculated based on the coordinates of the three reference points. The attitude data of the shield machine and the coordinate data of the central axis of the special-shaped tunnel;
[0045] Arrange a three-dimensional laser scanner 7 at the tail rear 4 of the shield machine 3 in the special-shaped tunnel and behind the cutterhead 6 5 of the shield machine 3 fo...
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