Modeling, reinforcement, and assessment of the landslide in Ben Djerrah (Guelma, Algeria) using the finite element method

Abstract

Landslides are detected in many places in Algeria, posing a danger to people and property. This is a significant geotechnical problem. To address this issue, a set of solutions is available. However, it is crucial first to understand the causes of soil slippage. This can be achieved through laboratory experiments and on-site investigations in the threatened areas where slippage occurs. In this paper, we study the landslide of Ben Djerrah using the finite element method by the Plaxis software. This slope stability of Ben Djerrah is cited in Guelma (Algeria). The numerical analysis used by the strength reduction method (SRM) with the Mohr-Coulomb criteria gave us the most important results for this slide. The smaller factor of safety (0.974) and the critical slope surface location and shape (rotational) indicate that Ben Djerrah is unstable. To stabilize the slope, we reinforced it using a propped solution with piles. The numerical analysis used it to model the slope of Ben Djerrah by pile to stop the movement of soil from sliding. The results show that the slope of Ben Djerrah is stable after being reinforced by a pile, and the shape of the failure surface has become less than the previous area that resulted from soil sliding without a pile.