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Tunnel cross-section drawing method based on parameterized mining method
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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
Active Publication Date: 2017-06-13
GUANGZHOU METRO DESIGN & RES INST
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[0003] The current tunnel section drafting method is: using drawing tools to draft tunnel sections for different tunnel boundaries. When the size of the tunnel section is large, the section drafting should be carried out according to the same drawing steps each time, which has a lot of repetitive labor and frequent drafting work. Repeated situation
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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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Abstract
The invention discloses a tunnel cross-section drawing method based on a parameterized mining method. The tunnel cross-section drawing method comprises the steps that (A) a standard tunnel cross-section outline suitable for different tunnel cross sections is planned according to a preset tunnel cross-section planning rule, and the shape of the standard tunnel cross-section outline is controlled by tunnel outline parameters; (B) according to a given tunnel limit, values of the tunnel outline parameters are adjusted, a new tunnel cross-section outline is planned, wherein the new tunnel cross-section outline can cover the given tunnel limit. By adopting the method, the work of repeatedly planting the tunnel outline of a designer is effectively completed, the complicated work of calculating the number of tunnel cross-section projects is saved, and the working efficiency of the designer is improved.
Description
technical field [0001] The invention relates to a drawing method of a tunnel section, in particular to a tunnel section drawing method of a parameterized mine method tunnel. Background technique [0002] Mine tunnels are widely used in the engineering field, but the drafting of the tunnel outline is often cumbersome. In order to ensure that the arcs of the tunnel outline are tangent to each other, the designer needs to repeatedly adjust the radius and center position of each arc. In order to improve the working efficiency of designers, it is necessary to establish a method for quickly drawing up the tunnel section profile. [0003] The current tunnel section drafting method is: using drawing tools to draft tunnel sections for different tunnel boundaries. When the size of the tunnel section is large, the section drafting should be carried out according to the same drawing steps each time, which has a lot of repetitive labor and frequent drafting work. Repeated situation. C...
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