在地质钻探过程中,常会出现钻孔轴线偏离勘探线剖面和勘探线剖面不垂直于地质界面(地层、矿层、断层面等)走向的情况.因此,在编制勘探线地质剖面图的过程中,必须进行孔斜校正.目前常用的孔斜校正法有:1)垂直投影法;2)界面走向投影法;3)界面视倾角投影法;4)垂迹投影法;5)界面交线投影法等.这些方法均有各自的使用条件和要求.选用投影法的基本原则是:1)尽可能如实地反映地质界面在剖面上的形态、产状和位置;2)尽可能减少对钻孔轴线形态的歪曲.在这些方法的具体应用中,常采用作图法、计算法、表算法或图算法.过去除对垂直投影法的简化问题作过较多的研究外,对其余方法则研究较少.有的即使将作图法、计算法简化成了表算法或图算法,但仍欠简便,且有时容易弄 In geological drilling process, often occur bore axis offset from prospecting line profile and prospecting line profile is not perpendicular to the geological interface (ground, seam, slice, etc.) to Thus, in the preparation of geological cross exploration lines, Hole slant correction must be carried out.Currently used hole slant correction method are: 1) vertical projection method; 2) interface to the projection method; 3) interface astigmatism projection method; 4) vertical projection method; these methods have their own requirements and conditions of use of the selected projection basic principles: 1) as reflected on geological interfaces sectional shape faithfully, occurrence and location; 2) forms on the axis of the borehole to minimize In the concrete application of these methods, often used as a graph method, a table method, a table algorithm or a graph algorithm.In the past, besides simplifying the vertical projection method, more studies have been done on the rest of the methods Some even simplified the charting and calculation methods into tabular or graphing algorithms, but they are still not easy and sometimes easy to get