標題: | Effects of overburden, rock strength and pillar width on the safety of a three-parallel-hole tunnel |
作者: | Chen, Shong-loong Li, Guo-wei Gui, Meen-wah 土木工程學系 Department of Civil Engineering |
關鍵字: | Three-parallel-hole tunnel;Tunnels interaction;Rock pillar;Numerical analysis;Stress strength ratio (SSR) |
公開日期: | 1-Nov-2009 |
摘要: | During the excavation of three-parallel-hole tunnel, the tunnel might collapse due to over-stress as a result of inadequate rock pillar width. Treating the rock overburden depth, rock strength, and rock pillar width as variables, a series of 3D numerical analysis was carried out to examine the effect of each variable on the safety of the tunnel, in particular the rock pillar. A stress strength ratio (SSR) was used to define whether the safety of the rock pillar was exceeded. A simple design chart for the case of three-parallel-hole tunnel, which took into account the influence of overburden depth, rock pillar width, and rock strength, was also proposed for used in the preliminary design stage. |
URI: | http://dx.doi.org/10.1631/jzus.A0920040 http://hdl.handle.net/11536/6546 |
ISSN: | 1673-565X |
DOI: | 10.1631/jzus.A0920040 |
期刊: | JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A |
Volume: | 10 |
Issue: | 11 |
起始頁: | 1581 |
結束頁: | 1588 |
Appears in Collections: | Articles |
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