Abstract: To make full use of limited resources of mine, split-recovery was done on waste rock of dump of Yunye Mazikeng.A few of stones rolling down caused by mechanical disturbances during split cut slope, which is the main disaster in resources recovery.Through analysis of influence factors to rolling stone by computational simulation of rockfall impact, corresponding prevention measures were proposed.It ensures the safe operation of this dump during resources recovery.

Key words: Dump, Analysis of the rolling stones, Prevention measures