TY - EJOU
AU - Rusydy, Ibnu
AU - Al-Huda, Nafisah
AU - Fahmi, M.
AU - Effendi, Naufal
TI - Kinematic Analysis and Rock Mass Classifications for Rock Slope Failure at USAID Highways
T2 - Structural Durability \& Health Monitoring
PY - 2019
VL - 13
IS - 4
SN - 1930-2991
AB - Rock slope kinematic analysis and rock mass classifications has been
conducted at the 17th km to 26th km of USAID (United States Agency for International
Development) highway in Indonesia. This research aimed to examine the
type of rock slope failures and the quality of rock mass as well. The scan-line
method was performed in six slopes by using a geological compass to determine
rock mass structure on the rock slope, and the condition of joints such as persistence,
aperture, roughness, infilling material, weathering and groundwater conditions.
Slope kinematic analysis was performed employing a stereographic
projection. The rock slope quality and stability were investigated based on
RMR (rock mass rating) and SMR (slope mass rating) parameters. The rock slope
kinematic analysis revealed that planar failure was likely to occur in Slope 1, 3,
and 4, the wedge failure in Slope 1 and 6, and toppling failure in Slope 2, 5, and 6.
The RMR rating is ranging from 57 to 64 and can be categorized as Fair to Good
rock. The SMR rating revealed that the failure probability of Slope 3 was 90%,
while it was from 40% to 60% for others. Despite the uniform RMR for all slopes,
the SMR was significantly different. The detailed quantitative consideration of
orientation of joint sets and geometry of the slope contributed to such differences
in outcomes.
KW - Engineering geology; kinematic analysis; rock mass classifications; rock slope stability; Aceh; Indonesia
DO - 10.32604/sdhm.2019.08192