东北地区高速铁路精测网的维护

Maintenance of Precise Survey Network of High Speed Railway in Northeast China

东北地区冬季严寒且漫长,地层冻胀、冻融等因素影响高速铁路精测网控制点的稳定。本文总结了哈齐、哈佳、哈牡以及正在建设的牡佳等客运专线精测网控制点维护面临的问题,有针对性地给出应对措施,将受区域气候影响的控制点数量控制在20%左右。

Winter in northeast China is long and cold.Soil frost heave and freeze thaw affect the stability of controlpoints of precise survey network of high speed railway.This article summarized the maintenance problems of precisesurvey network occured on Harbin-Qiqihar,Harbin-Jiamusi,Harbin-Mudanjiang and the constructing MudanjiangJiamusi passenger dedicated railways.Some measures were provided,which can control the point amount of precisesurvey network that were affected by northeast climate to about 20%.