基于智能型全站仪的大跨度河流水准测量方法研究  

Research on leveling Method of Long Span River Based on Intelligent Total Station

作　　者：张宝占 ZHANG Baozhan(China Railway Engineering Design and Consulting Group Co.,Ltd.,Beijing 100055,China)

机构地区：[1]中铁工程设计咨询集团有限公司,北京100055

出　　处：《铁道勘察》2023年第4期70-74,共5页Railway Investigation and Surveying

摘　　要：为解决大跨度河流水准测量难度大、作业效率低等问题,提出一种采用智能型全站仪实现跨河水准测量的方法。使用2台智能型全站仪进行精密三角高程测量,实现了真正意义上的同时对向观测,每个时段参与构网的高差均为通过同时对向观测高差计算得到的间接高差,极大地削弱了地球曲率及大气折光的影响,并且无需人工量取仪器高及觇标高,避免了人工量高误差的引入。研究表明,多时段同名高差较差与闭合差绝对值最大值分别为17.80 mm与1.48 mm,可以达到二等水准测量的精度等级。In order to solve the problems of high difficulty and low efficiency of leveling for long-span river,an intelligent total station was put forward to realize cross-river leveling.The precise triangular height survey was conducted by using two intelligent total stations for the simultaneous direction observation in real sense.The height difference involved in the network at each time period was the indirect height difference calculated by the height difference observed at the same time,which greatly weakened the influence of earth curvature and atmospheric refraction.It was unnecessary to measure the instrument height and survey beacon height,so as to avoid the lead of high manual measurement error.The results show that,the maximum absolute values of the height difference and closure difference are 17.80 mm and 1.48 mm respectively,which can meet the accuracy level of second-class leveling.

关 键 词：市域铁路 智能型全站仪 跨河水准测量 三角高程 同时对向 间接高差 

分 类 号：U239.5[交通运输工程—道路与铁道工程] P224[天文地球—大地测量学与测量工程]