Research purposes:Precise adjustment is an important process to guarantee smooth，high speed and reliable operations on high speed railway lines. This paper focuses on the research of key processes in static precise adjustment of CRTS I slab ballastless track in view of the engineering practices on several high speed lines to formulate engineering techniques for precise adjustment on line with elastic split fastenings.
Research conclusions:The study of track precise adjustment processes and engineering practices have demonstrated: (1)The self-developed data simulation and analysis software on the principle of track adjustment data simulation and analysis serves to support track precise adjustment and improve work efficiency:(2)Such proposed working procedures in precise adjustment as “first track irregularity，then track level，first track alignment，then track guage” has reduced workload:(3)The proposal to use the same rail as the reference to adjust irregularities and alignment has protected the track from disturbance generated during precise adjustment，reduced repeated adjustments and improved its efficiency and quality:(4)The research conclusions are applicable to static precise adjustment on high speed lines and dedicated passenger lines with CRTS I slab ballastless track and elastic split fastenings.
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