| dc.description.abstract | Pemalang – Batang Toll Road project is located in Central Java
Province. The soil conditions at the project site are highly diverse.
Previosly the existing soil was a rice fields area which has a high
potential for landslides and soil settlement due to the presence of
embankment slopes. Therefore, a slope stability analysis is required for
the embankment on the existing soil of the toll road.
The stability analysis of the embankment slope is calculated using the
limit equilibrium method using SLOPE/W Geostudio 2018 with varitions
in embankment height at 6 meters, 8 meters, and 10 meters. Additionally,
a manual calculation is conducted using the fellenius method for the 10
meter embankment. The embankment slope is considered safe if it meet
the minimum requirements of the factor of safety (FoS≥1,5) without the
seismic load, if affected with seismic load the minimum requirements of
the factor of safety (FoS≥1,1). Embankment that did not meet the
minimum requirements will be reinfornced using geotextile with an
ultimate tensile strength of 55 kN/m.
The analysis result for all of the variations without the seismic load have
met the required factor of safety (FoS≥1,5). However the 8 meters and 10
meters variations with the seismic load have not met the minimum
requirements of the factor of safety (FoS≥1,1), so it require reinforcement
using geotextile. After reinforcement with geotextile, the factor of safety
(FoS) values for the embankments with heights of 8 meters, and 10 meters
are 1,267, and 1,638 respectively. These values meet the required factor
os safety (FoS≥1,1). The total settlement that occurs directly on the 10
meter embankment slope is 2,201 cm, which is well within the allowable
settlement limit of 131,667 cm. | en_US |
