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Assessment of Tunnel Displacement with Weak Zone Orientation using 3-D Numerical Analysis  

Yim, Sung-Bin (Department of Earth & Environmental Sciences, Chungbuk National University)
Jeong, Hae-Geun (Department of Earth & Environmental Sciences, Chungbuk National University)
Seo, Yong-Seok (Department of Earth & Environmental Sciences, Chungbuk National University)
Publication Information
The Journal of Engineering Geology / v.19, no.1, 2009 , pp. 43-50 More about this Journal
Abstract
A 3-D numerical analysis was carried out to observe potential effects of orientation of inherent weak zones to tunnel behaviors and stress distributions during tunnel excavation. Weak zones used for the analysis were placed at the upper 1D part from crown, on the crown and on the center of face, using orientations derived from the 6th RMR parameter for assessment of joint orientation effect on tunnel. Mechanical properties of rock mass were derived through a in-situ displacement measurement-based back analysis. Finally, a classification chart for crown settlement with five ranks based on orientation and location of weak zones is suggested.
Keywords
weak zone; 3-D numerical analysis; back analysis; RMR system;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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