The Design And Application Of Metro Control Survey Scheme

With the rapid progress of society,although the transportation industry has developed rapidly,urban traffic is also becoming increasingly congested.Therefore,it is more and more important to ease the problem of congestion of urban residents and ensure the construction of urban transportation infrastructure.In terms of urban transportation,subway rail transit construction has great advantages,such as large traffic volume,fast speed,accurate time,energy conservation and environmental protection,and safe and comfortable functions,which can relieve urban traffic pressure and provide protection for the development of urban transportation industry.Therefore,More and more cities have put subway projects on the agenda.Control measurement of metro is an important part of the construction of subway rail transit.To this end,we must properly set up the subway control network,strictly control the quality accuracy,ensure the smooth implementation of the test progress,reasonably solve the difficult problems encountered in the construction,and obtain high-precision track test data.It is especially important to do a good job in the metro control measurement and is the focus in the current rail transit measurement research.In this paper,the ground control measurement in metro project is described,and the satellite positioning control measurement,precision wire network control measurement and elevation control measurement are discussed.Firstly,the significance and research status of control measurement in metro project and the main work in metro control measurement are described,including ground control measurement,shaft connection measurement,underground control measurement and so on.Then the plane control measurement is elaborated in depth,and the satellite positioning control measurement is explained from the points of selection and burial of the control network,the placement of the control network,external observation and data processing.Precision wire measurement is explained in depth from the layout,selection and laying of wire network,external observation and final data section,and ground control measurement is described in detail.Then the method and flow of elevation control measurement are expounded.Finally,this paper analyzes the above theories and methods with the Jinan Rail Transit R1 line.Through the summary of actual measurement and analysis,the measurement results meet the requirements,and the valuable experience and working methods that need to be paid attention to and improved in the future are obtained.