Tunnel cross-section drawing method based on parameterized mining method
A mining method and parametric technology, applied in the field of tunnel section drawing, can solve the problems of repeated planning work and a large amount of repetitive labor, and achieve the effect of improving work efficiency and saving complicated calculation work
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[0050] First draw the half-side contour, and draw the other half-side contour symmetrically, including the following steps:
[0051] S100): According to the boundary of the four-center circle tunnel, determine the radius of the main arc of the four-center circle, draw the first arc, the radius is R1, and the angle corresponding to the arc length is α 1 , taking its center as the origin coordinate (0,0).
[0052] S200): Determine the height of the entire tunnel by the tunnel boundary, determine the radius R2 of the second arc and its center position (0, y2), and simultaneously determine the radius R3 of the third arc and the radius R4 of the fourth arc .
[0053] Specifically include the following steps:
[0054] Using known parameters R1, R2, R3, R4, y2, α 1 ;
[0055] Find the center of the third arc: x3=(R3-R1)sinα1, y3=(R3-R1)cosα1)
[0056] Solve the simultaneous equations to find the center position (x4, y4) of the fourth arc:
[0057]
[0058] (X 4 -x 3 ) 2 +(y...
Embodiment 2
[0074] The following is a specific example of drawing the section profile of a straight-walled tunnel by the parametric mining method tunnel section drawing method of the embodiment of the present invention:
[0075] Firstly, for the tunnel boundary of the straight wall tunnel section, the arc radius, arc length, and center angle are determined, and the center of the circle is used as the origin to draw the arc segment of the tunnel section profile.
[0076] A straight line combined with the drawn arc is then drawn to form a straight wall tunnel section profile. Wherein, when drawing a straight line combined with the drawing arc, the straight line is treated as a special arc.
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