Abstract: The influence of medium-deep hole blasting underground to the surface building vibrations of Huibaoling iron mine. So, through the theoretical analysis, the existing blasting network is optimized. The research result show that, the blasting vibration and the rate of ore blocks are reduced and the cost of secondary blasting is lowered by the optimized blasting networks, besides that,good economic and social benefits are obtained.

Key words: Medium-length blasting network, Blasting vibration, Rate of ore blocks