ABSTRACT

National salt production, which has not yet been able to meet domestic demand, has prompted the construction of Salt Plant 2 in Serang Regency by PT Ainul Hayat Sejahtera. This project involves cut-and-fill work that has the potential to disrupt slope stability and pose geotechnical risks in the form of landslides, which could affect project safety, schedule, and costs. Slope stability analysis is generally performed using the Limit Equilibrium Method (LEM) and the Finite Element Method (FEM); however, comparative studies that integrate both approaches into a single analytical framework and link them to project risk management remain limited. This study aims to evaluate the stability of the excavation slope and analyze the differences in results between the Simplified Bishop method, Geostudio (Slope/W) 2012, and Plaxis v8.6, as well as their implications for construction project risk management. The analysis was conducted using secondary data from soil investigations with parameters of cohesion, internal friction angle, and unit weight based on the Mohr-Coulomb model. The results show safety factor (SF) values of 1.900 (Bishop), 2.535 (Geostudio 2012), and 2.597 (Plaxis v8.6), all of which meet the safety criteria (SF ≥ 1.5). The differences in results indicate that the FEM method provides a more representative estimate of actual conditions. This study contributes a framework for comparative evaluation of analysis methods and their integration into project risk management, particularly in construction method planning, scheduling, and resource allocation.