DesignofemergencymanagementsystemforurbanrailyransportationYAOJian-qin518031Doi:0,1,1234511964-234521323.13.1.13.1.2GISGIS3.1.33.212GISGPS3456OTNSDHATMMSTP74GIS25mm2310%33.120096967.4%3.24212/0.19942-0.52-90.1=62.13.33041,23[1].[M].:,2002:10-40.[2].[M].:,1976:20-60.[3].[M].:,1994:10-50.[4].[M].:[M],2000:12-60.152