新建线路以及既有营业线路大修与维修保养施工，在铺轨铺碴作业完成、线路基本拨至正位、轨枕补齐方正后，即可进行下道工序整道作业。其中主要作业项目是起道、拨道、捣固。起道和拨道依靠传统的人力手工机具施工方法，显然已远远不能适应现代化铁路建设需要，从八十年代开始 New lines and existing business lines overhaul and maintenance of construction, ballasting operation in the laying of the track, the basic line is allocated to the right, complement sleeper Founder, you can do the next step of the whole process. One of the main operating items from the beginning, call, tamping. It is apparently far from being able to adapt to the needs of modernized railway construction because it is far from the traditional construction methods of manpower and hand tools for starting and setting up roads. Starting from the eighties