Abstract:Model QZ100K drill was developed by the machinery plant,Changsha Insti-tute of Mining Research,With a China National practical new-type patent.This drill wascharacterinzed by high drilling efficiency,simple structure,and portability etc.It is suit-able for the medium-sized blasting hole drilling(Dia,100mm).The working principle,structure,technical parameters and deployment of this drill are described in this paper.