Abstract:

Jiuqu gold mine encounter mid-thick orebody in the mining,there are some problems while using traditional shallow hole shrinkage method,the exposed ares of stope roof is too large,security can not be guaranteed,the recovery rate of ore is low.Though select shallow hole shrinkage method combined with mid-deep hole blasting,it can protect worker’s safety,improve the recovery of ore,and shorten mining cycle of ore block.it is a new try to mining mid-thick orebody.

Key words: Mid-thick orebody, Shallow hole shrinkage method, Mid-deep blasting, Recovery of ore, Linglong gold mine