Device and method applicable to linear tunnel axis positioning measurement
A positioning measurement, linear technology, applied in the direction of measuring devices, optical devices, height/horizontal measurement, etc., can solve the problems of large impact of blasting construction, difficult to find and correct, difficult to guarantee accuracy, etc., to achieve low cost of equipment and saving Effect of measurement time and measurement accuracy guarantee
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[0035] like Figure 1-3 As shown, a measuring device suitable for linear tunnel axis positioning includes laser level 1. The model of laser level 1 is EK-268GJ. When the working distance from the tunnel face is greater than 50m, its maximum eccentricity difference is less than ±10mm, and The relative accuracy meets the requirements of general civil construction lofting. In this way, it can avoid being affected by the impact of flying rocks or the convergence deformation of surrounding rock during blasting. The laser level 1 is centrally connected with the tripod 3 through the connecting mechanism 2 . The connecting mechanism 2 includes a hollow rod 4, which is a 50 mm long, hollow copper cylindrical rod. The hollow rod 4 includes an upper connection part 4-1 and a lower connection part 4-2. One end of the upper connection part 4-1 is connected to the centering screw hole at the bottom of the laser level. The outer diameter (diameter) of the rod end is 16mm, and the inner di...
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