Analisis Stabilitas Lereng Dengan Variasi Lapisan Tanah Berbeda Yang Di Pengaruhi Nilai Kohesi Tanah

Abstract

Natural disasters often occur in hilly areas in Lampung Province, namely landslides. Slides that
occur due to increased soil pore water pressure. The GeoStudio SLOPE / W 2012 program can
analyze slope stability which can be modeled according to the original conditions in the field and
can determine the value of the slope safety factor. In this study, there are four cross sections of
slopes with four different layers with an angle of 30 ° each, and following a maximum height of 18
meters.
The results of the analysis of the GeoStudio Slope / W 2012 program using 4 methods of analysis,
namely Ordinary, Bishop, Janbu and Morgenstern Price, obtained different safe factor values, the
Morgenstern Price method and the Bishop method have a safe factor value that tends to be the
same and greater than the Ordinary method and the method. Janbu tends to have a smaller safety
factor.
The shape of the cross section of the slope in the 5 soil layers is the most safe factor, different soil
layers, it can be seen that each layer of soil has different safety factors but does not differ much
from the others.