MESH DEPENDENCY STUDY ON SLOPE MODELING

• Main Author: Muslim Amari, Hanif
• Format: Final Project
• Language: Indonesia
• Subjects: Pertambangan dan operasi berkaitan
• Online Access: https://digilib.itb.ac.id/gdl/view/37232
• Institution: Institut Teknologi Bandung

One way to analyze slope stability is by creating slope model using FLAC 8.0. Different mesh/grid size applied for slope with Mohr-Coulomb and strain-softening criterion and also different critical strain applied only for slope with strain-softening criterion. Then, the safety factor value show based on these two characteristic approaches. Based on modeling performed, the factor of safety obtained from Mohr-Coulomb criterion is 1.51-1.60 and from strain-softening criterion is 0.971-1.326. Changes in critical strain applied for strain-softening criterion and the value of safety factor obtained between 1.281-1.326, 1.064-1.1, and 0.971-1. So it can be concluded that mesh size influences safety factors in slope modeling. The smaller the mesh size the smaller safety factor obtained. Critical strains affect the value of safety factors. The higher the value of the critical strain, the higher the value of the safety factor obtained.