阐述磁浮交通的基本原理及其与传统轮轨交通 的区别，通过故障救援及安全运营实践，得出以下结论:中 低速磁浮交通系统结构可保证列车在运行中不发生脱轨 和颠覆的事故;悬浮间隙控制系统采用冗余设计，使支撑 的可靠性得到成倍的提高;采用信息化技术实现在线监 控，提高支撑的可靠性;假设出现突然断电和列车备用电 源也同时出故障的最不利情况下，列车会自动降落10mm 到达轨道上面，与轨道间产生的摩擦阻力可使运行列车安 全停下。实践证明，采用信息化技术支撑中低速磁浮交 通，具有更高的安全性和可靠性。

Differences between medium- low speed maglev transit and traditional wheel-rail transit are illustrated． From the practice of accident rescue and safe operation，it has been concluded that: medium-low speed maglev transit systems's structure ensures that train derailment and overturn will not occur，since the train embraces the guide-way track while running that eliminates the risk of train derailment and overturn in operation; the reliability of supporting is increased exponentially; real- time information technology is used to supervise and control the reliability of supporting; under the most adverse condition，assuming a sudden power interruption together with a train's standby power supply fault，the train will sit on its own on the 10 mm high rails，and the friction force on the track will stop the train． Practice indicated the information technology supports higher safety and reliability of medium-low speed maglev transit．

U266.4