Based on the deformable discrete element method(DDEM)

the caving law of natural block caving mining method is simulated by numerical method. The results show that the numerical simulation based on DDEM is suitable to analyze the mechanism of natural caving law in block caving method

it not only has function of research on caving mechanism in rock mechanics

but also can easily demonstrate the rock state variation at different times. The comparison with actual state measured in–situ shows that this method has practical accuracy

and can be efficiently used to guide the mining process.