Tunnel back break numerical calculation method based on laser point cloud measurement
A technology of laser point cloud and numerical calculation, applied in calculation, image data processing, instruments, etc., can solve the problems of inability to batch calculation and poor universality, and achieve the effect of reasonable and feasible calculation method, reasonable establishment and wide application range
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[0026] The present invention is described in detail below in conjunction with specific embodiments.
[0027] Figure 2 Design excavation contour lines and point cloud plots for door-hole type tunnels
[0028] The present embodiment takes the door-hole tunnel as an example, the present invention is described in detail, comprising the following steps:
[0029] Step 1: Obtain the design drawing of the cross-sectional outline of the tunnel type of door hole, and establish the XOY plane coordinate system; the XOY plane coordinate system is specifically: the tunnel centerline is the coordinate origin at the design elevation, the X axis is the horizontal line of the origin, and the Y axis is the line that coincides with the tunnel centerline;
[0030] Step 2: Connect the tunnel section excavation profile of the design drawing into a curve C; the tunnel section of the design drawing is generally composed of a multi-segment arc or arc and a straight line, the arc and the straight line are ...
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