广州地铁二号线通信系统设计的有关问题

研究目的:通过研究二号线通信系统设计的主要特点、主要技术创新以及开通后达到的效果,为我国城市现代大运量轨道交通线路通信系统的建设,提供工程设计经验和借鉴。研究方法:根据运营需求和通信技术的发展,从广州地铁二号线通信系统的组网技术、系统构成等方面进行多方案的比选研究。研究结果:提出了二号线通信系统的技术选择,组网构成,并使通信系统投资大为下降。研究结论:进行新线设计时,必须针对本线通信系统设计存在问题进行专题研究;构造并实施通信系统项目的全过程管理;在地铁通信系统UPS配备的蓄电池备电时间方面,建议对传输系统、无线系统、电话系统、中心一级母钟采用2~4 h备用,其它系统为1 h备用;在车辆段和地面区间,主干电(光)缆均敷设在电缆管道内,管道数量应按远期需要一次性设置;在多雨地区的人井处设置排水系统,并与车辆段主排水系统相通,可解决人孔积水问题。

Issues Related to the Communication System Design for the Guangzhou Metro Line 2

Research purposes: The studies are done on the main characteristics of communication system design, the main applied innovations and effects after the system being put into use for the Metro Line 2 for the purpose of providing experience and reference to construction of communication system for urban mass transit in China.Research methods:The comparison and research are done on the aspects of communication network technology,system constitution for Guangzhou Metro Line 2 accoding to the operational requirements and the development of communication technology.Research results:The technological choices and network constitution are put forward,which can largely reduce the investment in communications system.Research conclusions:The study should be done on the problems in designing the communication system when designing a new Metro line.The proposals are made that the skilled and experience integrator should be hired to control the whole construction process of communication system,the UPS of two hours should be equipped to the transmission system,wireless system,telephone system and main clock in control center and UPS of one hour to the other systems,the main optical cables from car depot to the ground should be laid down in cable pipe and the pipe quantity should meet the long-term requirement,and the rainage system should be installed in rainy area for the manhole,which should be connected with the main drainage system of car depot to solve the problem of ponding in manhole.