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将斜孔所见矿体(岩层)投影到剖面图上时,如果矿体走向线同它与剖面交点的法线间夹角?小于通过钻孔见矿点并与剖面正交的铅垂面上矿体的似倾角ω,用“走向投影法”绘制的剖图精度较高.反之,则以“倾向投影法”为好.“倾向投影法”如下.通过见矿点B作一与剖面CAE正交的铅垂面BFE.BFE面、矿体(岩层)界面BFD和剖面CAE的交点F,就是钻孔见矿点B在剖面图上的“倾向投影”点.
When the orebody (rock formation) seen from the slant hole is projected onto the cross section, if the angle between the ore body strike line and the normal to the intersection of the cross section and the ore body is smaller than the vertical plane perpendicular to the cross section through the borehole On the ore-like tilt angle ω, using the “projection method” to draw the higher accuracy of the profile. Conversely, the “projection projective method” is better. “Projection method” is as follows. Point B as a vertical plane with the cross-sectional CAE BFE.BFE face, ore body (rock) interface BFD and cross-section CAE intersection F, is the hole to see mine B in the profile of the “projection” point.