TY - GEN
T1 - Stability investigations in three-dimensions around a tunnel in a metal mine in China
AU - Kulatilake, P. H.S.W.
AU - Wang, X.
AU - Song, W.
PY - 2012
Y1 - 2012
N2 - To exploit an underground mine effectively and safely, it is important to have a good understanding of the geotechnical behavior around 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, insitu 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 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 continuum material and rock support system on the deformation, stress, failure zone 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 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, insitu 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 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 continuum material and rock support system on the deformation, stress, failure zone 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 - 3-D stress analysis, field monitoring
KW - Discontinuities
KW - Geotechnical behavior
KW - Mining
KW - Tunnel
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M3 - Conference contribution
AN - SCOPUS:84866013205
SN - 9781622760893
T3 - 2012 SME Annual Meeting and Exhibit 2012, SME 2012, Meeting Preprints
SP - 640
EP - 652
BT - 2012 SME Annual Meeting and Exhibit 2012, SME 2012, Meeting Preprints
T2 - 2012 SME Annual Meeting and Exhibit 2012, SME 2012
Y2 - 19 February 2012 through 22 February 2012
ER -