Abstract：Research purposes: The ballastless track is the preferred track structure for high—speed railway．In order to make the double—slab ballastless track meeting the requirements of 3 D positioning，high track regularity and less maintenance，the quality control technology and measure in three construction phases for double—slab ballastless track are offered based on the researches on the chosen construction program for the purpose of meeting the accurate demand of the track．
Research conclusions: It is concluded from the research the key points of quality control for double—slab ballstless track can be seized through choice of the construction programs，and the construction procedure and technique can be improved by analyses of the data of the technique tests and the other tests done before the construction．Upon it the engineers can fully master the quality control technology and measure for double—slab ballastless track for improving the construction quality and track accuracy．
2009, Vol. 26 
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