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A Study on Problems and Improvements of Face Mapping during Tunnel Construction  

Kim Kwang-Yeom (Korea Institute of Construction Technology, Dept. Geotechnical Engineering Research)
Kim Chang-Yeng (Korea Institute of Construction Technology, Dept. Geotechnical Engineering Research)
Yim Sung-Bin (Dept. of Earth & Environmental Sci. & Institute for Basic Science Research, Chungbuk National University)
Yun Hyun-Seok (Dept. of Earth & Environmental Sci. & Institute for Basic Science Research, Chungbuk National University)
Seo Yong-Seok (Dept. of Earth & Environmental Sci. & Institute for Basic Science Research, Chungbuk National University)
Publication Information
The Journal of Engineering Geology / v.16, no.3, 2006 , pp. 265-273 More about this Journal
Abstract
Face mapping during tunnel construction is useful and critical to predict the characteristics and stability condition of following tunneling sections and to select optimum support pattern. Therefore, a detailed geological survey of the tunnel faces, as important as a routine underground survey and a RMR evaluation, should provide critical information of the tunnel face condition in terms of the engineering geological condition and the safety of working environment for the following tunneling section. But the results of the face investigation have not been applied satisfactorily during tunneling due to limitation of technique, experience and time. This study analyze problems of face mapping in tunnel construction site by using statistical results of face mapping sheets obtained from completed tunnels, and suggest several opinions to improve face mapping during tunnel construction.
Keywords
face mapping; face mapping sheet; geological information; prediction of ground condition of the following tunneling section;
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