EVALUATION OF THE LOW WALL SLOPE STABILITY AT PT ARUTMIN INDONESIA COAL MINE ASAMASAM SITE

• Main Author: Paturohman, Arip
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/83903
• Institution: Institut Teknologi Bandung

PT Arutmin Indonesia Asamasam Site is an open-pit coal mining company located in Asamasam Village, Tanah Laut Regency, South Kalimantan. In Pit 14, Blocks 16 and 17 have a history of landslides and stability analyses have been conducted using the limit equilibrium method. In this study, the slope stability analysis method used is the finite element method with a shear strength reduction approach using Phase2 software. The failure criterion used in this analysis is Mohr-Coulomb. Stability parameters in this study include the Safety Factor, which is approached using the Strength Reduction Factor (SRF). Slope stability analysis was conducted on four blocks in Pit 14 with cross-section models A-A' (B16), B-B' (B17), C-C' (B18), and D-D' (B19). The slope stability analysis results indicate that all four slopes are stable as they meet the minimum requirements based on the Minister of Energy and Mineral Resources Decree No. 1827 K/30/MEM/2018 for overall slopes with moderate landslide severity, namely FK Dynamic ?1.05. The recommended slope management measures include monitoring the slopes using Electronic Distance Measurement (EDM) and monitoring surface water drainage to maintain slope stability.