As an example of inverse plumb surveying point IP13BZA in the Three Gorges dam horizontal displacement monitoring net, this paper demonstrates how to calculate it with this method.
以三峡工程水平位移监测全网(基点检验网)倒垂测点IP13BZA为例，给出了相应的计算示例。
2
In this paper, the tracing and the calculation method of the point of intersection of isopleth and net line are developed.