Research On Lifting Capacity By The Reconstruction Incompatible With Quasi-moving Block And Moving Block

While the construction of new rail transit lines is in full swing in China,many early operation lines in Beijing,Shanghai,Tianjin,Shenzhen and other cities urgently need to upgrade and transform the signal control system due to the long use time of signal system equipment,high operation pressure,limited system capacity and other reasons.The traditional transformation is the overall equipment replacement upgrade of the signal system,although the technical difficulty is relatively low,but the existing line operation,construction cycle,line investment and project management and other aspects of the major problems,in the actual project operation level is very difficult.In this paper,based on the investigation of domestic rail transit transformation lines,and the actual characteristics of the lines to be transformed in each city and the needs of the construction party,a compatible non inductive transformation technical scheme of the signal system is proposed.This paper first analyzes the principle of improving the transportation capacity of traditional moving block transformation,and then explains the compatible non inductive transformation technology.The non inductive reconstruction technology compatible with the existing system and the subsequent moving block system can solve the problem of unstable operation of the old system under the condition of the minimum impact scope of the control reconstruction project,and can have the conditions of direct upgrading of the subsequent moving block and can improve the automation level,so as to ensure the stability of the line reconstruction project,guarantee and improve the transportation capacity of the line Purpose.In view of the key problems of existing transfer to moving block operation,this paper puts forward the innovative work idea of compatible transformation,which considers the downward compatibility of existing quasi moving block system technology and upward compatibility of moving block technology,forming the longitudinal interconnection of train operation control system.This paper puts forward the track code keeping technology in the fuzzy area of the track circuit,the no code keeping technology in the tuning area,and the vehicle frequency locking technology based on the electronic map.In view of the low automation level of the existing lines,the improvement scheme of automation level in the reconstruction project is proposed.In this paper,the application of compatible non inductive transformation technology is studied based on the case of a line transformation project in a big city with high failure rate,large traffic volume and complex line conditions.From the point of improving the transportation capacity of the line,the paper makes analysis of the specific transportation capacity before and after the transformation of a real line.