j9平台(官方)最新IOS/安卓版/手机版APP下载 承建的贵广铁路站前工程GGTJ-5标段线路全长62.649正线公里，包括路基、桥涵、隧道、无砟道床工程等，其中隧道34座总长48.658公里，占项目线路长度的77.7%。
　　The GGTJ-5 section of Guiyang-Guangzhou Railway undertaken by CCCC Second Highway Engineering Co., Ltd., has a total length of 62.649 km, including subgrade, bridge and culvert, tunnel and ballastless ballast bed project. Among them, 34 tunnels have a total length of 48.658 km, accounting for 77.7% of the length of the project line.