5.5 Geological logging and mapping

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5.5 Geological logging and mapping

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 ......(本文共 4854 字 , 1 张图)     [阅读本文] >>


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