精密三角高程在武咸城际铁路二等水准测量中的应用分析

The Application of Precision Triangle Elevation in Second-Order Leveling Survey of Wuhan-Xianning Intercity Railway

水准测量传递高程适合在地势平坦的地区,但在地形复杂的地区会受到制约。用全站仪精密三角高程测量方法来代替二等水准测量,通过同时对向观测方法,消除或减弱大气折光、仪器高量取误差等对测量精度的影响,满足二等水准测量精度要求,在武咸铁路勘测应用中证明是可行的。

The standard leveling method would be limited in the complex transmission elevation area.A new method of total station trigonometric leveling is proposed.This method can eliminate or reduce atmospheric refraction,instrumental errors and other effects on measurement accuracy,so as to meet the accuracy of second-class standard measurement.And it is verified o be feasible in the application of Wuhan-Xianning railway survey.