Dynamic Collapse Simulation of a Slope Model Simulating a Discontinuous Rock Mass by Extended RBSM

Key Points

• The study aims to investigate the applicability of a rigid body spring model for slope collapse problems in discontinuous rock masses.
• Conducted element testing with a slope model made of metallic hexagonal rods to simulate discontinuous rock masses.
• Performed vibration experiments to analyze the effects of different input wave characteristics on collapse behavior.
• Re-calibrated material parameters based on element test findings to enhance model accuracy.
• Analyzed maximum stress changes under varying confinement pressures through shear and triaxial tests.
• Successfully reproduced maximum stress variations from one-sheet shear and triaxial compression tests.
• Demonstrated that the model could replicate volumetric expansion behavior and strain softening/localization effects.
• Showed that varying input wave characteristics influenced initial collapse modes and collapse initiation timings in the slope model.