Approach of Measurement Technology for Control Network of Normal Speed Railway
In order to improve the problems of deformation and damage for normal speed ballasted railways,as well as the increasing difficulty and cost of maintenance caused by the changing line positions year by year,the feasible solutions for introducing coordinates control was explored.By analyzing cost,measurement accuracy,measurement efficiency,and technological prospects,directly introducing the high-speed railway CPⅢ control network measurement method will inevitably lead to applicability issues such as excess accuracy and insufficient efficiency.The three-dimensional adjustment technology based on total station without leveling measurement was used for overall measurement and adjustment of the control network,creating conditions for the integration of control network measurement and line measurement.The utilization rate of data resources was greatly improved,which was conducive to improving measurement efficiency.The calculation of elevation anomalies was avoided and a new path for improving the accuracy of elevation measurement was opened up.It provides a new approach and method for the unification of total station engineering measurement coordinate system and satellite measurement geocentric coordinate system.A new approach and method for the unification of total station engineering measurement coordinate system and satellite measurement geocentric coordinate system is provided.Therefore,it is not advisable to directly introduce the CPⅢ control network measurement method for high-speed railways.The three-dimensional adjustment technology and method based on total station without leveling measurement have good characteristics and application prospects in many aspects,and are worthy of research and promotion.
normal speed railwaycoordinate controltotal station without leveling3D adjustment
NETL
NSTL
万方数据
