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高速公路的通信管道系统由主干线管道和支线管道组成。主干线管道一般是沿高速公路主线布设,它的容量大,路由长,用于长途光(电)缆的主干线传输工程。支线管道沿高速公路横断面方向或沿匝道路线布设,它的容量相对较小,路由短,用于通信系统终端和网络节点的路由、高速公路的紧急电话。监控系统的CCTV、可变情报板、雾检测器等设备的信号传输线路和高速公路管理养护部门的内部通信网络的路由等。 1.通信管线规划设计的一般要求 (1)管道及位置的确定 一般来说,高速公路本身的路由较为稳定,中央设有2～3m宽的中央分隔带,通信管道埋设在中央分隔带时不会受道路扩建改造和其他部门工程建设的影响,线缆较为安全并且维护方便,因此高速公路的干线管道一般埋设在中央分隔带内。
The highway communication pipeline system consists of mainline pipeline and branch pipeline. Mainline pipeline is generally laid along the main highway, its large capacity, long routing, long-distance optical (electrical) cable trunk transmission project. Branch pipeline along the direction of the highway cross-section or along the ramp route layout, its capacity is relatively small, short routes, for communication system terminal and network node routing, highway emergency phone. Monitoring system CCTV, variable intelligence panels, fog detectors and other equipment, signal transmission lines and highway maintenance department internal communication network routing. 1. Communication pipeline planning and design of the general requirements (1) to determine the location of pipes and roads In general, the freeway itself is relatively stable route, the center has 2 ~ 3m wide central strip, the communication pipe buried in the central strip when not Will be affected by the expansion and reconstruction of roads and the construction of other departments. The cables are safer and easier to maintain. Therefore, trunk lines of expressways are generally buried in the central divider zone.