基于AutoLISP的数字地形图塔基断面自动提取程序设计

随着电力事业的发展,架空送电线路电力勘测塔基断面显得十分重要,同时也是结构专业塔基基础设计的参考依据.文中分析目前电力勘测塔基断面获取的方法和DXF文件的编码格式,利用实测的大比例尺数字塔基地形图,基于AutoLISP编程实现数字塔基、地形图塔基断面自动提取存储的方法.提取的塔基断面数据与实测数据对比,证明方法具有可靠性、准确性、自动化程度高等特点,满足设计要求,弥补传统塔基断面数据获取的不足,提高数据处理效率.

Program design of the automatical extraction digital terrain map tower foundation section based on AutoLISP

With the development of power industry, the tower foundation section of overhead transmission line obtained through the electric power survey is not only important, but also is the structure of professional tower foundation design reference. The current electric power survey method of the tower foundation section acquisition is introduced with DX＇F encoding format by use of the measured large scale digital tower foundation terrain map, AutoLISP programming the digital tower foundation, and the section automatic extraction method of storage. By extracting the tower foundation section and the actual landform contrast, it shows that the method is reliable, accurate, of high degree of automation, which can meet the design requirements, to make up for the traditional methods of data acquisition of the tower foundation section, and to improve the efficiency of data processing.