Abstract：Research purposes: The”Code for the Engineering Survey for New Railway”issued in 1999 has not fit in the application of new surveying and mapping technology because some provisions in this code limit the application of new technology，SO it is urgent to revise the code．This paper gives the introduction to the main technical characteristics of revised code for application of new technoly in railway engineering survey．
Research conclusions: According to the survey principle of”integrating three control network into one net”for new railway engineering，this paper describes thecontrol network system newly added in the revised code for new railway engineering survey and gives the introductions to applications of GPS RTK center line survey，terrain survey and aerial surveying methods in surveying and mapping the cross—section of subgrade and application of optoelectronie ranging and trigonometric leveling method in tri—vertical control survey in mountainous area for railway construction．
2009, Vol. 26 
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