
 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) [阅读本文] >>


说明: 本文档由创作者上传发布,版权归属创作者。若内容存在侵权,请点击