在野外地质工作中,坑探编录,其中尤以探槽、浅井编录是经常要遇到的。这本来是简单的地质基础知识,但实践中却发现对此模糊不清或一知半解的事甚多。例如探槽展开图中,容易出现的错误常见于槽底部分。原因是,虽然一般都知道槽底应该用岩层走向(以下简称走向)表示,但却简单地将槽底与槽壁都看成同一平面,而没有展开前之立体概念。于是,在画出槽壁之岩层倾向(以下简称倾向)线后,便于槽底作垂直倾向线之垂线,即谓 In the field of geological work, pit exploration catalog, especially in the exploration tank, shallow well catalog is often encountered. This would have been a simple geological basics, but in practice it has been found that there is a great deal of ambiguity or ill-knowledge. For example, an exploded view of a trenches, prone to errors often found in the bottom of the trough. The reason is that although it is generally known that the bottom of the trough should be represented by the direction of the rock formation (hereinafter referred to as the strike), the trough bottom and the trough wall are simply regarded as the same plane without the stereoscopic concept before the unfolding. Thus, after the dip of the rock formation in the trench wall (hereinafter referred to as the “inclination”) line is drawn, it is convenient for the bottom of the groove to make a vertical line perpendicular to the line, that is,