Abstract: The KEKETALE lead-zinc ore 7^# experienced disordered mining，and a large number of irregular ore pillar and complex shape mined goaf with different size and level are formed.About four million tons of residual ores are left in the goaf.Enterprises faces with a very complex issue of goaf hidden trouble and residual ore mining.For the security requirements，a wide range of goaf must be caved at one times in the goaf groups processing，therefore the caving method must be efficient and practical.The goaf groups are divided into several large mining units.By means of whole region caving blasting technology based on bundle-hole variable resistance line，a lot of residual ores are caved orderly and drawn in concentration.In the process of eliminating goaf ground pressure，the recovery of residual resources is maximized for enterprises.Practice shows that the whole region caving method of bundle-hole resistance line blasting technology，is an effective technique to realize the safe and efficient mining of residual ore from complex goaf group.

Key words: Goaf groups, Bundle holes, Block caving, Residual ores stoping, Mining unit