Study On The Change Rule Of Line And Turnout Line Position Of EMU

The precise control network is the absolute position control network for the relative geodetic coordinate in the early stage of railway line construction,The precise control network is the absolute position control network for the relative geodetic coordinate in the early stage of railway line construction.But after construction is completed,The completion date of the construction unit is transferred to the equipment management unit,Only the precise control network of high-speed railway lines is transferred as required.A qualified unit shall be entrusted by the equipment management unit to maintain the measurement once every 5 years.Ensure the accuracy and accuracy of precise observation network.Instruct the equipment to restore maintenance.During the handover of the completed speed railway,The net is not used as a handover material,They have been lost after opening,Maintenance phase is only the equipment management unit to do round maintenance.In this paper,the absolute position change of the EMU line is measured and compared with the original design.Study on the change rule of absolute position in midline maintenance,The influence of the change of the relative position of the turnout on the traffic safety.For the first time,the absolute position measurement of universal speed line is carried out after years of maintenance,Making measurement plan in the early stage,Find out the precise network files during construction,After the construction of the precise survey net is lost,the precise observation network is re installed,Get the absolute coordinates of the curve and the position of the fork center,It is compared with the original design data,Get the amount of change,Summing up the law,The importance of absolute position measurement in general speed railway is verified.