TY - GEN
T1 - Rock slope stability study for Yujian River dam site based on kinematic analyses
AU - Wang, Liangqing
AU - Kulatilake, P. H.S.W.
AU - Tang, Huiming
AU - Liang, Ye
PY - 2012
Y1 - 2012
N2 - Lithological information, rock mass fracture data and discontinuity shear strength obtained through field investigations have been used in conducting kinematic analyses for the rock slopes that exist in the Yujian River dam site to evaluate the stability of the slopes. Results given in the paper can be considered as conservative because of several conservative assumptions used in the analyses. Dam site slopes seem quite stable up to 40° dip angle. Out of the three basic failure modes, possible wedge sliding seems to be the most likely one followed up with possible plane sliding as the second. Irrespective of the considered slope regions, slope dip direction ranges 270-315° and 200-210° seem to be the worst cases for possible instability of slopes in the dam site. Regional slopes in the dam site can be ranked with respect to safety from the lowest to highest in the following order: R-c-1, R-e-2, R-c-2, R-d-1, R-b, R-a, R-d-2 and R-e-1. Note that the dam site slopes are currently stable and the existing slope angles agree well with the results obtained from the rock slope stability analyses.
AB - Lithological information, rock mass fracture data and discontinuity shear strength obtained through field investigations have been used in conducting kinematic analyses for the rock slopes that exist in the Yujian River dam site to evaluate the stability of the slopes. Results given in the paper can be considered as conservative because of several conservative assumptions used in the analyses. Dam site slopes seem quite stable up to 40° dip angle. Out of the three basic failure modes, possible wedge sliding seems to be the most likely one followed up with possible plane sliding as the second. Irrespective of the considered slope regions, slope dip direction ranges 270-315° and 200-210° seem to be the worst cases for possible instability of slopes in the dam site. Regional slopes in the dam site can be ranked with respect to safety from the lowest to highest in the following order: R-c-1, R-e-2, R-c-2, R-d-1, R-b, R-a, R-d-2 and R-e-1. Note that the dam site slopes are currently stable and the existing slope angles agree well with the results obtained from the rock slope stability analyses.
KW - Dam site
KW - Discontinuity shear strength
KW - Kinematic analyses
KW - Rock discontinuities
KW - Rock slope stability
KW - Yujian River
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U2 - 10.4028/www.scientific.net/AMR.446-449.2048
DO - 10.4028/www.scientific.net/AMR.446-449.2048
M3 - Conference contribution
AN - SCOPUS:84863142833
SN - 9783037853474
T3 - Advanced Materials Research
SP - 2048
EP - 2055
BT - Trends in Civil Engineering
T2 - 2nd International Conference on Structures and Building Materials, ICSBM 2012
Y2 - 9 March 2012 through 11 March 2012
ER -