TY - GEN
T1 - Tunnel stress analyses in 3-D using equivalent continuum and discontinuum procedures
AU - Kulatilake, P. H.S.W.
AU - Wu, Q.
PY - 2013
Y1 - 2013
N2 - Deformation and stability around a tunnel in a limestone rock mass is investigated using both (a) an equivalent continuum/discontinuum model and (b) a fully discontinuum model through three-dimensional stress analyses. In model (a), the Representative Elementary Volume (REV) mechanical properties estimated in a previous paper are used to represent the combined behavior of intact rock and 4 of the 5 fracture sets that had significantly smaller sizes compared to the fifth fracture set (bedding planes). To this system, the bedding plane fractures were added according to its statistical geometric properties. In model (b), all 5 fracture sets were generated according to the obtained fracture geometry statistical models. Using model (a), effect of several factors, such as REV property values, bedding plane modeling method, the average horizontal stress to the vertical stress and tunnel depth, on the geotechnical behavior around the tunnel was studied in detail. A comparison is made between the stress analyses results obtained through the aforementioned two models.
AB - Deformation and stability around a tunnel in a limestone rock mass is investigated using both (a) an equivalent continuum/discontinuum model and (b) a fully discontinuum model through three-dimensional stress analyses. In model (a), the Representative Elementary Volume (REV) mechanical properties estimated in a previous paper are used to represent the combined behavior of intact rock and 4 of the 5 fracture sets that had significantly smaller sizes compared to the fifth fracture set (bedding planes). To this system, the bedding plane fractures were added according to its statistical geometric properties. In model (b), all 5 fracture sets were generated according to the obtained fracture geometry statistical models. Using model (a), effect of several factors, such as REV property values, bedding plane modeling method, the average horizontal stress to the vertical stress and tunnel depth, on the geotechnical behavior around the tunnel was studied in detail. A comparison is made between the stress analyses results obtained through the aforementioned two models.
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M3 - Conference contribution
AN - SCOPUS:84892876883
SN - 9781629931180
T3 - 47th US Rock Mechanics / Geomechanics Symposium 2013
SP - 2774
EP - 2781
BT - 47th US Rock Mechanics / Geomechanics Symposium 2013
T2 - 47th US Rock Mechanics / Geomechanics Symposium 2013
Y2 - 23 June 2013 through 26 June 2013
ER -