铁道科学与工程学报2016，Vol.13Issue(12)：2360-2367,8.
基于精密三角高程的高寒地区高铁路基冻胀监测
The frost heaving monitoring of high-speed railway subgrade in cold regions based on precise trigono metric leveling
摘要
Abstract
In order to improve the efficiency of frost heaving monitoring on high-speed railway subgrade in cold regions,a method of frost heaving monitoring based on precise trigonometric leveling was proposed in this paper. By analyzing the principle and precision of trigonometric leveling,a monitoring program of short-distance and one-way observation was adopted.Monitoring network was optimized and the geometric model of trigonometric net-work was built by differential method of adjacent height.The weight matrix was determined according to the co-factor matrix considering the correlation of indirect height.A software system that can be used to analyse the frost heaving monitoring data was developed based on these factors.The experiment proves that the frost heaving moni-toring based on precise trigonometric leveling is feasible.It can meet the precision acquirement of the second lev-eling survey when the temperature is no lower than -15 ℃and the precise leveling survey when the temperature is no lower than -25 ℃ by using the total station TS30 whose angle measurement precision is 0.5″.关键词
冻胀监测/三角高程/精度分析/相关性/CPIII控制点Key words
frost heaving monitoring/trigonometric leveling/precision analysis/correlation/CPIII control points分类
天文与地球科学引用本文复制引用
高山,吴会军,刘丹妮,郭江涛..基于精密三角高程的高寒地区高铁路基冻胀监测[J].铁道科学与工程学报,2016,13(12):2360-2367,8.基金项目
中国铁路总公司科研试验项目（Z2013－038－5）；四川省交通科技项目 （）
