Effect Evaluation of the Interaction Between the Atmosphere and the Soil on the Ngamakosso’S Embankment Stability, Talangaï, Brazzaville, Republic of Congo

The stability of an embankment is analyzed by determining its safety factor. The present work consists of analyzing the effect of atmosphere-soil interaction on the stability of the embankment located in the Ngamakosso district (Talangai, Brazzaville, Congo Republic). The aim of this work is to carry out an in-depth study of this embankment using the finite element method in order to evaluate its stability. The study of the stability of natural slope using finite element method gave a low safety factor showing that the slope is unstable. However, earthworks by softening the slope angle as well as the establishment of vetiver-type plant cover had appositive influence and constituted an effective means of stabilizing this slope. The results obtained after these analyzes indicate that the embankment is in a satisfactory state of stability.