TY - GEN
T1 - Investigation of rock mass stability around tunnels in an underground mine by three-dimensional numerical modeling
AU - Xing, Y.
AU - Kulatilake, P. H.S.W.
AU - Sandbak, L. A.
N1 - Publisher Copyright:
© 2017 ARMA, American Rock Mechanics Association.
PY - 2017
Y1 - 2017
N2 - In this paper, the stability of the tunnels in an underground mine was investigated by three-dimensional numerical modeling. Based on the available geological, geotechnical, and mine construction information, a three-dimensional model was built using the 3DEC code. The model contains the features of the inclined lithologies, a large-scale non-persistent fault, and a complex tunnel system. Stress analyses were performed on the rock mass having the elastic-perfectly plastic and strain-softening behaviors, respectively. The effects of the horizontal in situ stress and the support system were studied through the distributions of stress, displacement, and yielded zone around the tunnels. By comparing the numerical modeling results with the field deformation measurements, it was found that the strain-softening cases with the lateral stress ratios of 0.5 and 1.0 are accurate and applicable for this mine.
AB - In this paper, the stability of the tunnels in an underground mine was investigated by three-dimensional numerical modeling. Based on the available geological, geotechnical, and mine construction information, a three-dimensional model was built using the 3DEC code. The model contains the features of the inclined lithologies, a large-scale non-persistent fault, and a complex tunnel system. Stress analyses were performed on the rock mass having the elastic-perfectly plastic and strain-softening behaviors, respectively. The effects of the horizontal in situ stress and the support system were studied through the distributions of stress, displacement, and yielded zone around the tunnels. By comparing the numerical modeling results with the field deformation measurements, it was found that the strain-softening cases with the lateral stress ratios of 0.5 and 1.0 are accurate and applicable for this mine.
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M3 - Conference contribution
AN - SCOPUS:85047822017
T3 - 51st US Rock Mechanics / Geomechanics Symposium 2017
SP - 2083
EP - 2092
BT - 51st US Rock Mechanics / Geomechanics Symposium 2017
PB - American Rock Mechanics Association (ARMA)
T2 - 51st US Rock Mechanics / Geomechanics Symposium 2017
Y2 - 25 June 2017 through 28 June 2017
ER -