Analisis Stabilitas Saddle Dam, Best Practice: Pembangunan Bendungan Jatibarang Semarang

Abstract

The slope of right bank of Jatibarang reservoir has saddle with elevation just 10 m on top of reservoir water level (155 m), therefore, it was worried that the water flow to surrounding area. The Saddle is 200 m in length with top elevation is 162 m to 165 m and 150 in width. The solution of the problem is necessary Saddle Dam construction by using embankment material. Based on geology map in the location is that Saddle Dam laid on kerek formation with soil classification of loam and susceptible for sliding. The existing soil must be changed by good soil properties to guarantee the stability. This study descripts about Saddle Dam stability analysis by using finite element method. The result shows that factor of safety of Saddle Dam is 2.96, therefore Saddle Dam is stable and safe.