TY - JOUR
T1 - Stability investigations around a mine tunnel through three-dimensional discontinuum and continuum stress analyses
AU - Wang, Xin
AU - Kulatilake, P. H.S.W.
AU - Song, Wei Dong
N1 - Funding Information:
The first author of the paper is grateful to the Chinese Scholarship Foundation for providing a scholarship to conduct the research described in this paper as a Visiting Research Scholar at the University of Arizona. The study described in this paper was also partially supported by the Program for Changjiang Scholars and Innovative Research Team at the University of Science and Technology Beijing (IRT0950). This support is also greatly appreciated. Miss. Qiong Wu’s participation in this research working as a Visiting Research Scholar at the University of Arizona is also very much appreciated.
PY - 2012/11
Y1 - 2012/11
N2 - To exploit an underground mine effectively and safely, it is important to have a good understanding of the geotechnical behavior around the underground excavations made in the mine. The aim of this study was to investigate the geotechnical behavior around a tunnel excavated in a metal mine in China at the three-dimensional level. Using the information available on lithology, geological structures, in situ stress measurements, physical and mechanical properties of intact rock, discontinuities and interfaces between different rocks, a three-dimensional numerical model was built by using the 3DEC software package to simulate a tunnel excavation under a high in situ stress condition. Effect of the discontinuity network, possible intact rock and discontinuity parameter variability, representation of rock masses as discontinuum or equivalent continuum material and rock support system on the deformation, and stability around the tunnel was investigated. A very good agreement was obtained between the collected field deformation monitoring results and the results of the conducted numerical stress analyses.
AB - To exploit an underground mine effectively and safely, it is important to have a good understanding of the geotechnical behavior around the underground excavations made in the mine. The aim of this study was to investigate the geotechnical behavior around a tunnel excavated in a metal mine in China at the three-dimensional level. Using the information available on lithology, geological structures, in situ stress measurements, physical and mechanical properties of intact rock, discontinuities and interfaces between different rocks, a three-dimensional numerical model was built by using the 3DEC software package to simulate a tunnel excavation under a high in situ stress condition. Effect of the discontinuity network, possible intact rock and discontinuity parameter variability, representation of rock masses as discontinuum or equivalent continuum material and rock support system on the deformation, and stability around the tunnel was investigated. A very good agreement was obtained between the collected field deformation monitoring results and the results of the conducted numerical stress analyses.
KW - Discontinuities
KW - Discontinuum modeling
KW - Equivalent continuum modeling
KW - Geotechnical behavior
KW - Rock tunnel
KW - Three-dimensional stress analysis
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U2 - 10.1016/j.tust.2012.06.003
DO - 10.1016/j.tust.2012.06.003
M3 - Article
AN - SCOPUS:84865652255
SN - 0886-7798
VL - 32
SP - 98
EP - 112
JO - Tunnelling and Underground Space Technology
JF - Tunnelling and Underground Space Technology
ER -