![]() FOS (factor of safety) for each analytical step in this model was then calculated through the strength reduction method. According to the calculation results of FLAC 3D, the distribution of stress, displacement and plastic zone in the dump is obtained. The process of dump accumulation is simulated numerically. FLAC 3D has good computational and analytical capabilities. MIDAS-GTS/NX has the advantage of pre-processing modeling. By using some engineering methods, the physical and mechanical parameters of waste rocks layer were then determined accordingly. Afterwards, these sample waste rocks, of which grain size is less than 5 cm, were selected for indoor large-scale shear test under natural and saturated conditions. Based on a real mine project in a certain open-pit mine waste dump in Tibet, the in situ test on waste rocks from waste dump, including measurements of density, water content, rock size, and natural repose angle, was conducted. The safety and stability of waste dump are vital influencing factors to the mine sustainability and mine employees. ![]()
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