![5.5 Geological logging and mapping](https://imgs.zsbeike.com/imgs/P/P06111/P06111_tm.txt.f7753b.jpg)
 5.5.1 Geological logging shall be performed for main subsurfacestructures and diversion tunnels after formation of final excavatedsections; geological data shall be collected for auxiliary tunnels likeaccess tunnels, construction adits, ventilation tunnel (共 4854 字) [閱讀本文] >>