Abstract: Blasting flying rock is a major disaster in mine blasting, the dimensional analysis method is used to obtain the parameters that influencing initial velocity of the stone.According to the statistical data of mining blasting, the flying stone velocity prediction formula is obtained by linear regression analyzing the parameters.Besides that,the flying rock's regular pattern and the maximum flight distance under certain circumstances are obtained based on the principle of physical mechanics. Combing with the example of medium-length hole basting in HML open-pit mine, the prediction formula of the blasting flying stone safety distance of medium-length hole is deduced.

Key words: Open-pit mine, Blasting flying rock, Safety distance, Physical mechanics, Dimensional analysis