高程导线代三等水准测量可行性探讨及施测中边长超限原因分析

The Feasibility Study on the Replacement of Grade 3 Leveling Survey with the Height Traverse and Analysis on the Reasons ofSide Length Exceeding the Limits during Surveying

在水利水电测量中 ,常常遇到地形复杂 ,高差变化大的情况。此时 ,几何水准施测很困难 ,随着激光测距及全站仪技术发展 ,测距及测角精度都有很大提高。是否能用三角高程导线替代高等级水准 ,一直是测绘行业关注的话题 。

The conditions of complicated topography and great difference of elevation are often met during water and hydroelectric surveys. So it is difficulty to carry out geometric elevation. With the development of technique of laser distance measurement and total station instrument, the accuracy of distance and angle measured have much been improved. Whether the high grade leveling can be replaced with trigonometric height traverse has been the subject of talk among the person of the same occupation. In the paper, the initial inquiries on such problem was made combining the actual example.