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http://dx.doi.org/10.7474/TUS.2011.21.5.333

A Study of RMR in Tunnel with Risk Factor of Collapse  

Jang, Hyong-Doo (전남대학교 에너지자원공학과)
Yang, Hyung-Sik (전남대학교 에너지자원공학과)
Publication Information
Tunnel and Underground Space / v.21, no.5, 2011 , pp. 333-340 More about this Journal
Abstract
RMR is most strongly adopted rock classification method to scheme support system in domestic tunnel. However the RMR, which is based on geological survey during design stage of tunnel, can't present the real ground accurately. In this study, authors suggested Weighted-RMR (W-RMR) which is considered weighted value of risk factors of collapse due to prevent collapse and roof falls during tunneling. According to the application of W-RMR to Bye-Gye tunnel, we could change support type flexibly by the risk factors on a face of tunnel.
Keywords
Tunnel; RMR; Risk factor of collapse; W-RMR;
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