基于GIS的地质图图切剖面计算机辅助编绘

Computer-aided production of the cutting section of a geological map based on GIS

图切剖面是区域地质图的重要组成部分,用于反映地下的地层和构造特征。传统的图切剖面是靠手工制作的,不但效率低下,而且不易保存和更新,作者研究开发了一种基于GIS的地质图图切剖面计算机辅助编绘系统。其编绘过程主要包括以下几个步骤:(1)矢量化地质图的准备;(2)图切剖面的自动绘制;(3)人机交互修编与输出。本文以武汉市喻家山地质图的图切剖面编绘为例,证明该系统具有高效率、高质量的特征,可以满足现有各种比例尺的地质图图切剖面的制作要求。

As an i mportant component part of a regional geological map,the cutting section can reflect the characteristics of subsurface strata and structure.but previousl y the cutting section of a geological map was produced by hand,so the producti on efficiency was low and the secfion not easy to kecp and update.The main ste ps of the production are as follows :(1)preparation of a vectorized geolog ical map,(2)auto-matic production of a cutting section by the computer,an d(3)interactive modifying and output of the cutting section.Take for exam ple the geological map of the Yujiashan area,Wuhan City,this paper proves tha t this system has high efficiency and good quality and so can meet the requireme nts for producing the cutting sections of geological maps of various scales .