(1) Refer to the geological report or conditions similar to the mine to select the upper disc moving angle, the lower disc moving angle, the end moving angle, and the topsoil moving angle;
(2) On each exploration line profile, draw the moving boundary from the selected upper and lower disk moving angles from the ore body boundary or the most prominent position of the ore body until the moving boundary intersects the surface line;
(3) On the longitudinal section of the ore body, draw the moving boundary from the selected end moving angle from the boundary or the protruding position of the lowest mining level until the moving boundary intersects the surface line;
(4) The intersection of the moving boundary line and the surface line of each section is transferred to the topographic geological map, and the closed curve is formed by the uniform sliding curve or the broken line. The range within the closed curve is the surface rock and soil moving belt.
Surface rock movement zone
V1, V2, V3 - vein number; 123... - exploration line number;
Γ-lower rock movement angle β-upper rock movement angle;
Δ—the movement angle of the rock along the side of the ore body; δ0—the movement angle of the topsoil;
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