一种新的实测地层剖面绘制方法

A kind of new drawing method of measured stratigraphy section

当前常采用导线法绘制实测地层剖面，但该法常导致常规导线段在总导线方位上确定的地层边界点不是真实的边界，特别是平移导线段在实测地层剖面图上确定的地形线与岩性线之间产生了比较大的夹角。本文针对导线法绘图的这些缺陷，提出了绘制地层剖面的一个新方法——三维投影法：1）常规导线在总导线方位上确定的地层边界点为真实的地层边界位置，且三维投影法绘制的地层剖面图与总导线方位上的图切剖面一致；2）平移导线只在导线平面图中展现，而不出现于地层剖面图中，消除了地形线与岩性线之间存在夹角和平移导线处理的多解性问题。

Nowadays the measured stratigraphy section is usually drawn using the leading line method, but the leading line method usually makes that the boundary point determined by the regular leading line in the direction of the total leading line is not the real boundary point, especially the form line determined by the translational line in the measured stratigraphy section has a relatively big angle with the rock line. Aimed at the flaw problem of the leading line method in the drawing of measured stratigraphy section, a new profile drawing method with 3D projection is implemented. Firstly, it makes the boundary point determined by the regular leading line in the direction of the total leading line to be the real boundary point. At the same time it also enables the measured stratigraphy section drawn by the profile drawing method with 3D projection to be the same as the cutting profile in the direction of the total leading line. Secondly, it makes the translational line still exist in the plane figure and don＇t take on in the geological profile, and it eliminates the problem of the angle between the rock line and the form line and the problem of the various forms of the translational line.