SLOPE STABILITY ANALYSIS OF AMERORO DAM

The Ameroro Dam was built by the Sulawesi IV River Basin Center (BWS),
Directorate General of Water Resources of the Ministry of PUPR with a
storage capacity of 44.44 million m3 in order to increase the Irrigation Area
(DI) in Konawe Regency. The Ameroro Dam is designed with the urugan
type which has a peak height of 82 meters, a dam length of 324 meters, and
a width of 12 meters. The spillway building has a threshold elevation of
122.50 meters with the Ogee type, a dodger channel in the form of double
concrete conduits, and a Submerged Intake Tower retrieval building type.
This study aims to analyze the slope stability of the Ameroro dam. This
research studies slope stability using several methods; (a) Spencer Method
(b) Finite Element Method. This research takes a research case study in
Ameroro Dam, Konawe Regency, Southeast Sulawesi Province, Indonesia.
The primary data from this study is in the form of documentation of
conditions in the field. The results of this study state that from the results of
the slope stability analysis, it was found that the safety factor on the slopes
contained in the Ameroro Dam was 1.79. Slope conditions are relatively
stable. And from the results of the comparison of slope stability analysis
with the spencer method and finite element method, the safety factor value
of the spencer method was 1.347, while the safety factor value of the finite
element method with PLAXIS 2D software analysis was 1.67. So the lower
bound SoF value = 1.347 from the spencer method calculation and the upper
bound SoF value = 1.67 from the PLAXIS 2D software analysis calculation