一、养护维修特点整体道床线路的养护维修工作和碎石道床线路比较有如下特点: 1.整体道床没有更换枕木,清筛道碴、捣固等作业,维修工作量减少60％以上。 2.整体道床主要是依靠扣件,把钢轨与道床混凝土联为整体,调整轨距、水平、超高,提供必要的线路弹性,缓冲列车的冲击震动作用,满足旅客舒适条件的要求,因此,扣件应经常处于良好工作状态。 3.整体道床线路受到破坏后,修复困难,影响行车安全,所以应加强线路的养护维修工作。二、养护维修工作 First, the maintenance and repair features Maintenance and repair of the overall track bed line Road and gravel track line has the following characteristics: 1. The overall bed rail without sleepers, cleaning ballast, tamping and other operations, maintenance workload reduced by more than 60%. 2. The overall track bed is mainly rely on fasteners, the rail and concrete ballast bed as a whole, adjust the gauge, level, high, to provide the necessary line flexibility to buffer the impact of the train shock to meet the requirements of passenger comfort conditions, therefore, Fasteners should always be in good working condition. 3. After the destruction of the entire track bed line, repair difficulties affecting traffic safety, it should be to strengthen the line maintenance work. Second, maintenance and repair work