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CLC number: TU4
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2009-09-10
Cited: 2
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Effects of overburden, rock strength and pillar width on the safety of a three-parallel-hole tunnel
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Shong-loong CHEN, Guo-wei LI, Meen-wah GUI. Effects of overburden, rock strength and pillar width on the safety of a three-parallel-hole tunnel[J]. Journal of Zhejiang University Science A, 2009, 10(11): 1581-1588.
@article{title="Effects of overburden, rock strength and pillar width on the safety of a three-parallel-hole tunnel",
author="Shong-loong CHEN, Guo-wei LI, Meen-wah GUI",
journal="Journal of Zhejiang University Science A",
volume="10",
number="11",
pages="1581-1588",
year="2009",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A0920040"
}
%0 Journal Article
%T Effects of overburden, rock strength and pillar width on the safety of a three-parallel-hole tunnel
%A Shong-loong CHEN
%A Guo-wei LI
%A Meen-wah GUI
%J Journal of Zhejiang University SCIENCE A
%V 10
%N 11
%P 1581-1588
%@ 1673-565X
%D 2009
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0920040
TY - JOUR
T1 - Effects of overburden, rock strength and pillar width on the safety of a three-parallel-hole tunnel
A1 - Shong-loong CHEN
A1 - Guo-wei LI
A1 - Meen-wah GUI
J0 - Journal of Zhejiang University Science A
VL - 10
IS - 11
SP - 1581
EP - 1588
%@ 1673-565X
Y1 - 2009
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0920040
Abstract: 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.
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