针对客运专线运营中轨道监测和维护手段尚不成熟的现状,提出以三维精密观测网为测量基础,运用轨道检测小车技术,对轨道中线坐标及轨面高程、轨距、水平(含超高)、轨向、短波和长波不平顺等进行精确检测及数据处理,并与设计数据进行比对分析,进而得出轨道几何形位的变化量,作为轨道调整的依据,结果表明,完全符合客运专线技术标准。同时,分析了当前应用轨检小车技术进行轨道检测时尚存在的、必须注意的几个主要问题,从而得出在三维精密观测网下运用轨道检测技术进行客运专线轨道几何形位检测的可行性和实用性。 Aiming at the status quo of track monitoring and maintenance means in passenger dedicated line operation, a three-dimensional precision observation network is taken as the basis of measurement. By using the technology of orbit detection trolley, the center line coordinates and track elevation, gauge, level (including ultra- , Orbit, shortwave and longwave irregularities, etc., and compared with the design data to get the change of orbit geometric shape as the basis for orbital adjustment. The results show that, in line with the requirements of passenger dedicated line technical standard. At the same time, this paper analyzes several main problems which exist in the track inspection when applying the track inspection car technology, and then draws the conclusion that using the track inspection technology to detect the track geometry of the passenger dedicated railway line under the three-dimensional precision observation network, Practicality.